Multi-tubular LED light bulb

摘要

The multi-tubular LED light bulb has a seat having a power plug, multiple glass tubes mounted on the seat, multiple multi-directional lighting LED strips respectively mounted inside the glass tubes and an AC to DC converting circuit board mounted inside the seat and connected to the power plug to obtain AC power and converting the AC power to DC power. The multi-directional lighting LED strips are electronically connected to the DC power source from the AC to DC converting circuit in parallel. Since the LED light bulb has multiple multi-directional lighting LED strips, different directional sightings and even brightness are provided. Further, heat from the LED strip is easily and quickly transmitted to the sidewall of the glass tube to extend the lifetime of the LED light bulb, since the multi-directional lighting LED strips are close to a sidewall of the corresponding glass tube.

主权项

1. A multi-tubular LED light bulb comprising:
a seat having a top defined with multiple through holes, a bottom and a power plug mounted on the bottom of the seat; multiple glass tubes each having a bottom and a top opposite to the bottom of the corresponding glass tube, with the bottoms of the multiple glass tubes respectively inserted into the multiple through holes on the top of the seat and mounted on the seat; multiple multi-directional lighting LED strips respectively mounted inside the glass tubes, wherein each multi-directional light LED strip has:
multiple lengthwise LED circuit boards each having two opposite lighting faces;a lateral LED circuit board mounted on tops of the multiple lengthwise LED circuit boards located adjacent to the top of the corresponding glass tube; andtwo power pins mounted on the multiple lengthwise LED circuit boards and passing through the bottom of the corresponding glass tube; an AC to DC converting circuit board mounted inside the seat and having:
AC power inputs connected to the power plug to receive AC power; andDC power outputs where the power pins of the multi-directional lighting LED strips are connected, with the DC power outputs supplying DC power; wherein the multiple multi-directional lighting LED strips are electronically connected to a DC power source in parallel; and at least one support mounted between exteriors of the corresponding two adjacent glass tubes, with the at least one support being spaced from the seat and the multiple through holes to define a fixed gap between the corresponding two adjacent glass tubes and between the at least one support and the seat, wherein each of the at least one support has a length matching a distance between the two through holes, where the corresponding two adjacent glass tubes are inserted.