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照明灯上为什么要装灯罩_灯具_设计456问答
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照明灯上为什么要装灯罩

浏览:59次 | 提问时间: 08-03 08:32
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3个答案
所谓回忆很假 08-03 08:33

灯罩一般都是抛物线的,灯泡在抛物线的焦点上,而且大部分都是白色或者金属色的,从物理学上说,这些都可以帮助灯泡的光反射,会起到增强亮度的作用。希望我的回答能帮到您!

深信你 08-03 08:41

安装反光的灯罩可以增加照度,安装半透明的装饰灯罩可以改善照明效果,不刺眼。

想问你为何头也不回 08-03 08:49

1   灯罩一般都是抛物线的,灯泡在抛物线的焦点上,而且大部分都是白色或者金属色的,从物理学上说,这些都可以帮助灯泡的光反射,会起到增强亮度的作用。2   在家居的情况,聚光,阻止飞蛾也是一个用处。通过灯罩后,在灯罩处的温度就比较低了,飞蛾扑火也不会被烫*,落得到处都是。防止风*雨淋损坏     防止温度过低     防止外力破坏     防止被盗。3   灯泡直接接触空气雨水   骤冷骤热会爆的   。   希望我的回答能帮助到你

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