Patent ID: 9228700
Filing Date: 2016-01-05
CPC Classification: F21K,F21V,F21Y,Y10T

Claim Text:
1. An LED light tube for replacing a fluorescent light tube mounted in a fluorescent light tube fixture, said fluorescent light tube fixture having first and second socket end mounts, each end mount mechanically accepting a common fixture connector for said fluorescent light tube, said fluorescent light tube fixture being supplied with main line power, said main line power being 110 volts to 277 volts, comprising: a power and a neutral wire connection from said main line power to the first socket end mount in the light fixture and an open circuit between said main line power and the second socket end mount; an elongated tubular structure substantially the size and length of said fluorescent light tube and extending between said first and second end mounts; within an end region of said tubular structure and adjacent said first socket end mount, an internal power supply for converting said main line power to LED bank power, said internal power supply electrically coupled to said main line power via said first socket end mount; said internal power supply being a form fitting, Class 2 power supply with a transformer no larger than 25×22×22 mm in size, the Class 2 power supply converts 120-277 v AC (50-60 Hz; 0.061-0.14 A) to 15 w, 31 v DC which is the LED drive voltage for no more than 280 LEDs; said tubular structure including: an elongated hemispherical substantially transparent tube cover mounted atop a printed circuit board substrate, said substrate supporting a plurality of no more than 280 LEDs, said tube cover and LED supporting substrate extending the length of said tubular structure other than said at said end region; an elongated hemispherical metal cover mounted below the printed circuit board substrate and beneath said plurality of LEDs as a heat sink; and an electrical system within said tubular structure suppling said LED bank power to said plurality of LEDs on said substrate.