Unverified85% confidenceSolutionTime unknown
投影灯泡开机后不可立即断电，需等待风扇散热停机再拔电（约1-2分钟），频繁热断电会显著缩短灯泡寿命，与灯泡品质无关
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85%
Confidence
Long-term
Relevance
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Unverified无自动断电和定时功能的纯灯泡款不建议购买用于长时间点亮，忘关易导致空烧灯泡烧毁或过热风险80% similarUnverified灯泡机的灯泡属于易耗件（寿命约2000-5000小时），画面变暗大概率是灯泡老化而非硬件故障，可自行更换原装灯泡，不必上门维修80% similarUnverified高流明大功率灯泡虽亮但发热量大，封闭式或朝下的灯罩内散热受限会缩短寿命，功率过高的灯泡不适合装在小型密闭灯具中80% similarUnverified卤素灯泡寿命约500-1000小时，LED标称3万小时以上但实际受散热和光衰影响；成对更换灯泡（一只坏两只换）避免两侧亮度色温不一致79% similarUnverifiedLED灯串标称寿命普遍20000-50000小时，且发热极低可长时间点亮不烫手，白炽/小灯泡款发热高且耗电，现基本不推荐77% similar
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