| 摘要 |
This device is essentially formed by a network of pipes, tubes or hollow bodies. It also comprises a helmet (A) intended to receive, permanently or removably, one or two ear-phones (1) and is provided, to this effect, with a device allowing the retraction of each of said ear-phones within the thickness of the padding, and with one or a plurality of internal networks of conduits (2) allowing the reduction to a minimum of the length and number of connection pipes (3 and 4), external to the helmet, and also comprises a type of ear-phone (1) which gives optimum confort, both auditive and tactile, a sound collector (5) external to the helmet and facing the loud-speaker (HP) of an apparatus such as a radio, taperecorder or transmitter-receiver, and a sound collector (6) which may be associated with a microphone. |
