โ†‘LED ์ถฉ์ „์‹ ์ „๊ตฌ ์›๊ฒฉ ์ œ์–ด ๋ฐฐํ„ฐ๋ฆฌ ์ž‘๋™ ์ „๊ตฌ(ํƒ€์ด๋จธ ํฌํ•จ), ๋ฐ๊ธฐ ์กฐ์ ˆ ๊ฐ€๋Šฅ, 3๊ฐ€์ง€ ์ƒ‰์˜จ๋„