Patent ID: 7982376

Claim:
A light bulb cooling device comprising: an outer tube comprising a first end, a second end, and a transparent lower portion; an inner tube comprising a first end, and a second end; a hollow first end cap comprising a coolant fluid supply inlet port, and an air duct sleeve, such that the first end cap provides a seal between the first end of the inner tube and the first end of the outer tube; a hollow second end cap comprising a coolant fluid supply exit port, and an air duct sleeve, such that the second end cap provides a seal between the second end of the inner tube and the second end of the outer tube, so that an annular volume of coolant may be maintained between the inner tube, the outer tube, the first end cap, and the second end cap; and at least one light bulb assembly positioned within the inner tube, such that at least a portion of the inner tube in proximity to the bulb is transparent.