the invention is a replacement for a conventional incandescent or halogen light bulb . besides providing regular illumination , it has advantages over a conventional bulb while maintaining the bulb &# 39 ; s decorative function , such as visual effects associated with the bulb &# 39 ; s envelope or shade . the invention comprises a connector equivalent to a standard light bulb base , at least one light emitting diode , and a driving circuit hosted on a module such as a printed circuit board and adapting the supply voltage to the requirements of the led . compensation for the effects of temperature may be included . the invention may also include other circuitry to support various enhanced features such as novel decorative features or control over the brightness , color , or other characteristics — all potentially varying over time or being controlled remotely .