A hollow PE or PVC hose with a suitable length is used as the sound conductor from the receiver to the human ear in a mobile phone. The air in the tube is used as the sound wave propagation medium, and the smooth inner wall in the tube minimizes its absorption of sound waves. One end of the conduit is connected with the highly elastic sealed latex earplug, and the other end is connected with the sealing ring on the universal fixture or the interface reserved by the handset manufacturer, so that the air from the eardrum of the human ear to the handset is isolated from the outside air, and the energy of sound waves is concentrated in the closed loop formed by the earplug/transmission tube/handset interface, so that the human ear is far away from the handset and the harm of electromagnetic waves to the human brain is minimized.
The invention relates to a cellphone radiation-free earphone which can avoid cellphone radiation. Two air ducts transmit the sound waves from the receiver to the ear in the forward direction and the sound waves from the mouth to the microphone in the reverse direction. The transmitter and receiver housings of the device are provided with metal mesh and metal sheet, and the housings are non-metallic, metal and metallized electrostatic shielding structures. The electro-acoustic components, wires, radiation sources and secondary radiation sources of the mobile phone body and supporting headphones are far away from the human body and are protected as a whole. The sound quality is pure and natural, which not only prevents radiation but also protects hearing. Strong applicability, beautiful and fashionable, in line with international fashion and natural design. Use in noisy and dynamic environment, with clear sound quality, safe behavior and easy answering. The use quality of the mobile phone can be improved. Optimizing the combination and configuration of mobile phones is one of the ways of technological innovation.