[Tolsti]

Over 20,000 hours.

12 years of 8 hours per day. Basically lifetime of the set.

[Kozak]

So why is my TI stock still a dog?

[Prophet in the wilderness]

Yeah, that's better than paying $ 250/300 for a bulb for a HDTV DLP projection TV or projector... the LED/DLP will almost virtually last 15 years or more, and is robust.
Current lights/bulbs for HDTV DLP / Projectors last only about 1000/2000 hours or less.
Once this technology comes to the market, you can see HDTV DLP TVs and projectors that don't have the LED illumination prices come down drastically.