Does anyone know why LED Christmas "bulbs" (the plastic lens shaped like the traditional

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(allanGEE) #1

Does anyone know why LED Christmas “bulbs” (the plastic lens shaped like the traditional incandescents) have a small hole or two in them – usually near the tip? It seems to negate the attempt to make them weatherproof.

My best guess is that it allows moisture to evaporate? Or maybe prevents temperature changes from creating a slight vacuum that might suck in moisture?

Not concerned, but very curious.

(Stuart Taylor) #2

Correct. They are drain holes. Without them early “bulbs” got water inside over time.