Just found out the following:
Now LED bulbs that are meant to be replacements for standard 120v incandescent bulbs are very similar to CCFL bulbs. They have AC rectifying section, most are half wave. Then they step it down, then use a current control section to provide the final step for the lighting. If it is a Fading led bulb, there would be more circuitry inside for that.
Bottom Line. LED bulbs for 120v use require a rectifier (LED's use direct current) usually a half/wave will do. They also require a step down transformer .
Soooo they are complicated. Those parts produce heat, the cheaper the parts, the more the heat, and the more likely to have a failure which occasionally may result in a fire risk. Bottom second line: Buy good quality. I suspect you can find quality reviews on the web.