Patent ID: 8350452
Filing Date: 2013-01-08
Classification: H01J,H05B

Abstract:
1. A light bulb comprising: a base having an enclosure with a socket connector at a lower end thereof and a base connector at an upper end thereof, the enclosure including conductors for conveying electric power from the socket connector to the base connector through a circuit; a selectively detachable bulb assembly having at a bottom side a bulb connector mechanically and electrically cooperative with the base connector to secure the bulb assembly to the base and conduct electrical power therethrough, the bulb assembly further including at a top side an inner bulb and an outer bulb, the inner bulb comprising a transparent quartz inner layer with a transparent silicon outer layer, the inner bulb containing therein a high intensity discharge lamp electrically connected to the bulb connector, the outer bulb containing the inner bulb and comprising a transparent quartz inner layer with a transparent silicon outer layer, the bulb assembly further including an instant-on lamp and a photo resistor situated to receive light from the high intensity discharge lamp, the instant-on lamp and photo resistor electrically connected with the bulb connector; the circuit including a high intensity discharge ballast circuit for powering the high intensity discharge lamp, and an instant-on circuit that is electronically coupled to the instant-on lamp and photo resistor of the bulb assembly through the base and bulb connectors, the instant-on circuit further including an electronic switch for powering the instant-on lamp only when the photo resistor detects that the high intensity discharge lamp is not at full brightness; whereby with the bulb assembly coupled with the base and power applied to the socket connector, line power may be applied to the socket connector and converted into high voltage power through the high intensity discharge ballast circuit for the high intensity discharge lamp, the instant-on circuit powering the instant-on lamp immediately until the high intensity discharge lamp reaches substantially its full brightness.