制作室外屏也要考虑的几个问题

室外屏的主要问题如下：
　　显示屏安装在室外，经常日晒雨淋，风吹尘盖，工作环境恶劣。电子设备被淋湿或严重受潮会引起 短路甚至起火，引发故障甚至火灾，造成损失。 显示屏可能会受到雷电引起的强电强磁袭击。
　　环境温度变化极大。显示屏工作时本身就要产生一定的热量，如果环境温度过高而散热又不良，集 成电路可能工作不正常，甚至被烧毁，从而使显示系统无法正常工作。
　　受众面宽，视距要求远、视野要求广；环境光变化大，特别是可能受到阳光直射。
　　针对以上特殊要求，室外显示屏必须做到：
　　屏体及屏体与建筑的结合部必须严格防水防漏；屏体要有良好的排水措施，一旦发生积水能顺利排 放。
　　在显示屏及建筑物上安装避雷装置。显示屏主体和外壳保持良好接地，接地电阻小于3欧姆，使雷电 引起的大电流及时泄放。
　　安装通风设备降温，使屏体内部温度在-10℃～40℃之间。屏体背后上方安装轴流风机，排出热量。
　　选用工作温度在-40℃～80℃之间的工业级集成电路芯片，防止冬季温度过低使显示屏不能启动。
　　为了保证在环境光强烈的情况下远距离可视，必须选用超高亮度led

很好的建议，支持下{:1_149:}

支持  支持...............

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