"finally".... the video was uploaded more than three years ago. Those 5mm LEDs are not very efficient... 2-3 lumens apiece I believe. A single modern high power LED could beat it in terms of light output.
Thats an old video, but while on the subject, those LEDs are ancient indeed, I really don't see why they are still used for lighting applications today; other then bieng cheap as hell, can get 1000 of them for a few dollars.. not that it matters, brand name LED bulbs such as philips are still overpriced, where those use either those 5mm ones, or the SMD equivilant (albiet a bit more efficeint, it is no better.), they are really only good for indicator lights on equipment or appliances IMO.
A single SST-90 will blow away this 500 led light.
I think they've been phased out for most lighting applications. U used to see a lot of 'lightbulbs' that consisted of a number of 5mm leds (50-100 or so), but now most led bulbs have a sinlge emitter, or at most a few.
Perhaps the only benefit of the 5mm ones is that the power density is so low you can often use them without any heatsinking. Heatsinking is also easier when putting a lot of smaller smd leds on a plate, but most of those are pretty inefficient (50-70 lm/W) too.
I suppose efficiency doesnt matter that much with mains powered lamps, and they are still a lot better than incandescents, yet hardly require replacement.
the "Lights of America" brand is the brand that uses a ton of 5mm strawhat LEDs. Way to give LEDs a bad name, LoA. (Oh, and thanks for giving America a bad name too, although we had that to begin with. Also, I think LoA is made in China)