The terms food-grade, non-toxic, electrically non-conductive, and non-staining are not words one generally expects to be essential descriptions for a state of the art LED light bulb; but they do apply specifically to the patented Switch Lighting company's "LQD Cooling System".

Up until now LED bulbs have not been able to provide a warm, fireside glow similar to traditional incandescent bulbs, while still offering long life-cycles and good energy efficiency. The reason for that is fairly simple. When phosphors are used that provide the reddish-yellow hues, more electrical power is needed to produce a given amount of light, and temperatures in the bulb rise accordingly. That increase in heat production causes expensive LED bulbs to fail prematurely.

Switch's LQD system utilizes two proprietary components to get the job done: a highly reliable and efficient driver, and a unique coolant made of food-grade, non-toxic, non-staining, liquid silicone. The word driver in this context, does not refer to software, but rather a hardware component in the base of the bulb that powers the LED array by converting the electricity into a form the LEDs can use.

The liquid silicone is of necessity, electrically non-conductive, and surrounds the LED's and crucial driver components in the Switch bulb. As the liquid heats up it circulates because of natural convection much like a lava lamp, thereby dissipating heat to the outside surfaces of the bulb.

Because of the extra power needed to excite red hues from the phosphors, this type of LED bulb is somewhat less efficient than typical LEDs. The upside is the traditional "warm" color spectrum it produces, so that it can comfortably replace incandescent bulbs.

A piston-like volume compensation device prevents liquid expansion from breaking the bulb, but if it does break it is far safer than compact florescent bulbs (CFLs).