LIGHT EMITTING DIODE BULB WITH CENTRAL AXIS BIDIRECTIONAL CONVECTION HEAT DISSIPATION STRUCTURE

摘要

An LED bulb includes a lower cover having ventilation holes formed at outer periphery thereof, and a first coupling opening formed at top side thereof; a separating unit provided within the lower cover at a position between lower edges of the ventilation holes and bottom side of the lower cover, and having a convection pathway formed at top side thereof; a heat sink having bottom end positioned on top side of the separating unit; and an upper cover having top side formed with convection hole corresponding to top end of the heat sink, and a second coupling opening formed at bottom side thereof. When the second and first coupling openings are coupled with each other, the upper and lower covers are assembled together to form a central axis bidirectional convection heat dissipation pathway sequentially through the ventilation hole, the convection pathway, the heat sink and the ventilation hole accordingly.

主权项

1. A light emitting diode (LED) bulb with a bidirectional convection heat dissipation structure, the LED bulb comprising:
a bulb socket having two electrodes; a cover made of a light permeable material, and having a receiving space therein and a bottom side provided on a top side of the bulb socket, wherein the outer periphery of the cover adjacent to the bottom side thereof is provided with at least one ventilation hole, and a top side of the cover is formed with at least one convection hole, so as to allow air inside and outside of the cover to communicate with each other through the ventilation hole and convection hole; a separating unit provided at a position between the lower edge of the ventilation hole and the bulb socket; a driving circuit board provided at a position between the separating unit and the bulb socket, wherein the driving circuit board is electrically connected to the electrodes, respectively; and at least one LED circuit board provided within the receiving space and electrically connected to the driving circuit board, wherein the bottom end of the LED circuit board is positioned on the top side of the separating unit such that the LED circuit board can communicate with the cold ambient air outside the bulb through a bidirectional convection heat dissipation pathway formed by the ventilation hole, the receiving space between the LED circuit board and the cover, and the convection hole.