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1. 发明申请

US20110050435A1 PROJECTION DISPLAY DEVICE 有权
标题翻译：投影显示设备
公开(公告)号：US20110050435A1
公开(公告)日：2011-03-03
申请号：US12796739
申请日：2010-06-09
申请人： Takeshi KATAYAMA , Miyuki Ikeda , Hirotoshi Kemi , Hideharu Saito
发明人： Takeshi KATAYAMA , Miyuki Ikeda , Hirotoshi Kemi , Hideharu Saito
IPC分类号： G08B21/00 , G03B21/16
CPC分类号： G03B21/16
摘要： A projection display device includes: a dustproof filter that removes dust and a foreign material from drawn air; an air guide path that guides, to a liquid crystal panel, the cooling air blown by a suction fan; an air velocity detector that is arranged in the air guide path and detects the velocity of the cooling air that flows in the air guide path; and a CPU that determines, on the basis of the value detected by the air velocity detector, whether or not the dustproof filter is clogged. The air velocity detector detects the velocity of the cooling air by measuring the temperature of the air in the vicinity of the heat generating element that will be increased due to heat transfer generated by the heat generating element. This configuration improves accuracy in determining whether or not the dustproof filter is clogged.
摘要翻译：投影显示装置包括：防尘过滤器，其从吸入的空气中除去灰尘和异物; 引导路径，其将由吸风扇吹送的冷却空气引导到液晶面板; 空气速度检测器，其布置在所述引导路径中并且检测在所述引导路径中流动的冷却空气的速度; 以及CPU，其基于由空气速度检测器检测的值来确定防尘过滤器是否堵塞。空气速度检测器通过测量由发热元件产生的热量传递而将增加的发热元件附近的空气的温度来检测冷却空气的速度。该配置提高了确定防尘过滤器是否堵塞的准确性。

2. 发明授权

US08334783B2 Projection display device 有权
标题翻译：投影显示设备
公开(公告)号：US08334783B2
公开(公告)日：2012-12-18
申请号：US12796739
申请日：2010-06-09
申请人： Takeshi Katayama , Miyuki Ikeda , Hirotoshi Kemi , Hideharu Saito
发明人： Takeshi Katayama , Miyuki Ikeda , Hirotoshi Kemi , Hideharu Saito
IPC分类号： G08B21/00
CPC分类号： G03B21/16
摘要： A projection display device includes: a dustproof filter that removes dust and a foreign material from drawn air; an air guide path that guides, to a liquid crystal panel, the cooling air blown by a suction fan; an air velocity detector that is arranged in the air guide path and detects the velocity of the cooling air that flows in the air guide path; and a CPU that determines, on the basis of the value detected by the air velocity detector, whether or not the dustproof filter is clogged. The air velocity detector detects the velocity of the cooling air by measuring the temperature of the air in the vicinity of the heat generating element that will be increased due to heat transfer generated by the heat generating element. This configuration improves accuracy in determining whether or not the dustproof filter is clogged.
摘要翻译：投影显示装置包括：防尘过滤器，其从吸入的空气中除去灰尘和异物; 引导路径，其将由吸风扇吹送的冷却空气引导到液晶面板; 空气速度检测器，其布置在所述引导路径中并且检测在所述引导路径中流动的冷却空气的速度; 以及CPU，其基于由空气速度检测器检测的值来确定防尘过滤器是否堵塞。空气速度检测器通过测量由发热元件产生的热量传递而将增加的发热元件附近的空气的温度来检测冷却空气的速度。该配置提高了确定防尘过滤器是否堵塞的准确性。

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