[KongchangAI]
Unverified80% confidenceTradeoffTime unknown

亮度与省电权衡:LED霓虹灯牌每米功率约6-8W,1米以内的小型灯牌总功率<10W,长期通电电费可忽略;但追求高亮度做背景墙的大型灯牌可能到30-50W,需考虑散热和持续通电成本

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