Protective helmet containing an integral transceiver

作者: John W. Reed

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摘要: A protective helmet, such as a football motorcycle construction or the like comprises shell made of impact-resistant material. Inside helmet is complete transceiver system which allows two-way wireless communication between persons in same location to remote base unit. No components protrude from either interior exterior antenna follows configuration centerline while one more microphones are contained within elements face guard. switch device, also guard and including an illuminated element, disposed field view wearer.

参考文章(5)
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Shinoda Katsuro, Tanaka Naoki, Kawaguchi Toshiyuki, Katsukawa Hiroyuki, COMMUNICATION HELMET FOR CONSTRUCTION WORK ,(1988)