An experience story that boosted productivity by brightening a dark room as bright as outdoors with LED lights that emit intense light appeared

by Daoudi Aissa

An engineer who came from Senegal in Africa to Boston in the northern part of the United States talked about his experience of realizing the brightness of indoors but outdoors in order to counter the winter of Boston, which gets dark as soon as the evening approaches. It's spelled out.

Your room can be as bright as the outdoors | benkuhn.net
https://www.benkuhn.net/lux

Ben Kuhn, an engineer at Wave , a startup that develops international money transfer systems, came to Boston from Senegal and faced the first winter, 'The day is 16:15. It sinks and becomes pitch black. ' Kuhn, who noticed that the darkness had lost his concentration, decided to get up at 6:30 in the early morning and work, but this time he could not get up at the night event. That thing.

So Kuhn bought a huge corn-shaped LED light . With a brightness of 35,000 lumens , it is also used to illuminate huge warehouses.

UL Listed 250W LED Corn Light Bulb, E39 Mogul Base 5000K Daylight 35000LM Lamp, Replacement 1000Watt CFL HPS Metal Halide, Large Area Lamp for Street, Garage, Warehouse High Bay Lighting… ---- Amazon.com

The same LED light that Mr. Kuhn bought is not handled by Amazon.co.jp in Japan, but you can purchase it if it is a parallel import product with the same standard and power consumption. However, the price is as high as 43,777 yen at the time of writing the article.

When you install an LED light of 35,000 lumens in a room, it looks like this. The left is before lighting and the right is after lighting, and you can see that the room is bright so that it can be mistaken.

PPS: If you're curious, photos of my desk with and without the bulb on (with the same camera settings).

Obviously my phone camera (iPhone XR) does not have the dynamic range needed to capture the real difference, but it's still pretty stark. Pic.twitter.com/ofTh18agHC

— Ben Kuhn (@benskuhn) November 16, 2019

When Mr. Kuhn measured the brightness in the room with a smartphone application, it was 50 lux in a dark place and 400 lux in a bright place. 400 lux is as bright as sunrise on a sunny day. Thanks to the fact that the inside of the room is as bright as the outdoors, Mr. Kuhn's productivity has improved dramatically, and he is now able to work on the same time schedule as in the summer.

According to Mr. Kuhn's calculation, the power consumption is about 2kWh in 8 hours a day. When converted to charges, it will cost only about 54 yen depending on the plan. On the other hand, it seems that the drawbacks are that it does not illuminate the entire room evenly and that the light flickers when the power of other home appliances is turned on. So, Mr. Kuhn said that he is trying to build an environment where the entire room can be brightened by DIY.

In addition, the LED light of this size is equipped with a fan for heat dissipation, and it is said that a considerably loud sound is emitted. Therefore, Mr. Kuhn recommends the method of preparing two 120W LED lights. If it is a 120W LED light, you can purchase it for 6400 yen at the time of writing the article.