» Flashlights and flashlights »300W LED floodlight with bowl reflector

300W LED floodlight with bowl reflector

Hello dear readers and the inhabitants of our site!
In this article, the author of the YouTube channel Igor Negoda will tell you how he made a powerful LED spotlight.

Materials
-

-, diameter 300 mm focal length 120 mm
- Aluminum heatsink from a computer processor
- Batteries
- Polished stainless steel bowl
- Double-sided tape.

Instruments, used by the author.
-
- .

Manufacturing process.
So, Igor is not the first time making powerful lights. But now he managed to find a crystal with a power of 300 watts, and having a very small radiating surface. Here, for example, is a comparison of a 100 Watt crystal with it. Such a light flux density should make it possible to obtain a beam with minimal divergence.


As it becomes clear from the data indicated on the package, it needs to be supplied with voltage from 15 to 17 Volts.

The crystal itself comes with a 3 mm thick brass cooling platform. Igor screwed it to an old radiator from a computer processor.

Unfortunately, the laboratory power supply is not suitable for this LED, it has a maximum current of only 5 A.

To do this, he will use a powerful lithium polymer battery. Fully charged, she gives out 17 Volts, but Igor specifically did not fully charge her. This is necessary so as not to burn the LED, and measure the power and voltage drop under load.


So, turning on the LED through the wattmeter, a power of 268 watts was achieved at a voltage of 13.9 V. It shines very brightly!



As a reflector, he will use just such a bowl, acquired in Auchan. The concentrator will be the Fresnel lens.


In the center of the bottom, a rectangular hole was cut for the LED assembly.


Then, using double-sided tape, I glued the module to the bottom.


And tried on a Fresnel lens to the reflector.


Without a Fresnel lens, several rings are visible, and a bright central spot.



But when I installed it, I got a very well-focused spot.



The beam of light has a very slight discrepancy, and this is what you need!


He glued the lens to the side of the bowl, again applying double-sided tape.


And surprisingly, this millimeter of tape thickness only improved focus.

Then he installed a fan, a toggle switch, and secured the battery. With such a large fan power is not enough, but for short-term operation is enough.



Well, it's time to experience! At ranges of about 500 m the lights are just fine. Even with strong background lighting, the spot from the lantern can be seen even at 1,500 m.






And now it turned out to even see the beam reflected from the water on the building.


Thanks to Igor for the idea of ​​a simple but very powerful spotlight!


All good mood, good luck, and interesting ideas!
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6 comments
Author
Here are tests of a 10 KW flashlight
Lantern of Igor and Oleg
Author
In general, first and last names are capitalized. punish
Author
At the very beginning of the article whose channel is written!
At the end - link to the video.
Sergio
This idea is Igor negatives. He has his own channel on YouTube. He does a lot of things there and jet propulsion.
Author
It was he who already took the second battery about 3 Kilorubly. The first - 3 times more capacity.
He made another 10 kilowatt lantern. There is generally tin.
LED assembly:
Discount price: 3 372,34 rub
Fresnel lens:
Discount price: RUB 1,438.16
Unfortunately, the author did not provide links to the battery, but, I think, is also not cheap! Honestly, I don’t understand - for what? Perhaps the author needs something for some reason, but with a battery capacity of 4.2Ah and a consumption of 19A ... I wanted to notice that the lens made of plastic melts, but I realized that it won’t be in time! scratch

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