Those points are low-voltage DC. If you were to stick needles into your heart, then short them directly across to those connectors, I could see that you might have a bad day, but your body's resistance is so high, and the power on these bulbs is so low, that it is safe. Think touching both contacts on a 9V battery. Or even a 12V car battery...
A static shock from shuffling on carpet is thousands of volts and is just an "Ouch"...
According to the video the OP is referring to, the way the power supply is configured, neutral goes straight through to the emitter board, and is not isolated by a transformer. Therefore if the polarity in the bulb is reversed, 120vAC will go straight through.
All of the LED bulbs I have taken apart have a transformer in the power supply so this would not be an issue.
need help. i want to buy a best quality bulb for bathrooms of all my home. I have searched for best quality in terms of lumens per watt, cri, power factor, warranty as well as led life.
what is your expert advice on this product: 5W: Buy 5W at Best Price in India on Snapdeal
please suggest…
This will be helpful to general customer to find out best quality led light.
no dude you are not right… technology is gearing up nowaday. LED manufacturers are giving brightest led chip day by day. just you have to keep in touch with latest specification. I found charlston and philips brands in india with the best quality product. Charlston is however small company but very competitive price with quality too.
I bought a few of the “ebay specials” led 120 volt bulbs several years ago with varying degrees of success. 6 out of 8 or so are still working well. At that time a philips 10 watt (or so) yellow bulb (looked like a bugs eye) was about $30 Cad. I recently bought some of the newer philips flat white bulbs and they are below $10 Cad. The price on the ebay bulbs went up after I bought them and I’d no longer consider them since the philips are almost in the affordable range.
I still have a bunch of cfl’s working - they refuse to die - so with these and spares I won’t need more led’s for some time.
John.
Thank you for sharing 
Two years later and Ikea is getting close, 6W and 400 lumen. Useful spot, I hope. Will buy and try.
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On today’s work site I used a couple of the Utilitech 60W equivalent LED bulbs and they seemed to be just about right up there with incandescent on color, diffusion, and lumens. And much cooler when I took one out this evening; I would have had to let an Incan cool down but you could handle this one easily, even on the heat-sinked area. I didn’t touch the metal but I probably could have. These have definitely come of age now and are still improving as can be seen in this thread.
LED home lighting is no longer the wave of the future, it is NOW!
Phil
That’s more accurate for 2016:
