As bright as those lights are, they're still no comparison to the summer sun really. I went into a rabbit hole a while back of investigating whether it would b

As bright as those lights are, they're still no comparison to the summer sun really. I went into a rabbit hole a while back of investigating whether it would be possible to light a room in my house equivalent to the summer sun, so I could avoid SAD during the long nights of the British winter. Taking that 35,000 lumen light above, even assuming it's lumen rating is accurate, in a 3 by 3 metre room, that's less than 4,000 lux, and that's if it was entirely focused on the floor area. Direct sunlight is 32,000 to 100,0000 lux. The sun is just really bright. Normal indoor home lighting is about 100 lux. The most efficient LEDs on the market are 200 lm/watt, so a reasonable lower bound for the amount of lighting you'd need for a 3x3 room is 1440 watts to get to the minimum 32k lux, but you'd have to factor in electrical inefficiencies and the directionality too. All that being said, those corn cob bulbs are fantastic and do make you feel a lot better. Just not quite the same as relaxing on a hammock in the garden, sadly.