| 摘要 |
An LED bulb has an external power supply connector, a bulb cup mounted to the external power supply connector, a fan; an internal power supply receiving power from the external power supply connector, and providing an output power. The bulb also includes a heatsink, an LED light source mounted to the heatsink and receiving power from the internal power supply, and a bulb cover covering the LED light source. The heat sink is mounted at a connection part of the bulb cup and bulb cover and the bulb cup is separated from the LED light source in the bulb cover. The bulb cup has a plurality of air vents formed as apertures in the surface of the bulb cup which can comprise a pair of rows of air vents such as a lower row and an upper row. |
