I’ve been testing a new LED bulb called the HydraLux. These unique bulbs are filled with a clear liquid coolant (a non-toxic paraffin oil). Other LED bulbs use large metal fins or fans for cooling purposes. The advantage of using a liquid coolant is that the LED bulb can produce 360° light like a regular incandescent bulb.The HydraLux also has a slim line, so it can fit in desk lamps and other light sockets with limited space. It uses only one 4W Cree LED to produce the equivalent of a 25 Watt incandescent bulb. In my desk lamp, this bulb produced a slightly bluish white light, similar to a 25 Watt bulb, as the manufacturer claims. I’d use this bulb for a task light, but the light was too blue to use in my bedside lamp. Th LED bulbs that produce a truly warm light are the EarthLED and the EnLux.
The HydraLux sells for about $35. It comes in two colors: 150 Lumens (Warm White), 200 Lumens (Daylight White). It has all the certifications you’d want for a light bulb: it’s UL Listed, CE Approved, and it has a ROHS certification (it has non-toxic components).
Here’s a video of the bulb in action:
This article by Lloyd Alter goes into the technical details behind the bulb.