Reception device, antenna, and junction cable

An antenna operatively connected to a main-body device configured to receive a broadcast wave falling within a predetermined frequency band, the antenna comprising:

• a transmission part including a plurality of stranded wire transmission cables configured to transmit a signal and/or power generated in the main-body device;
• and
• an antenna part including a plurality of stranded wire antenna cables that are provided alongside the transmission cables of the transmission part from ends of the transmission cables of the transmission part, provided on the main-body-device side, to a predetermined point between the main-body-device-side ends and the other ends of the transmission cables of the transmission part so that the antenna part and the transmission part form a path used to transmit the broadcast wave,
• wherein,
• one ends of the antenna cables opposite to main-body-device side ends are unconnected,
• the main-body-device-side ends of the transmission cables are operatively connected to a high-frequency-elimination circuit provided in the main-body device and that eliminates entry of a high-frequency signal to the main-body device,
• the main-body-device-side ends of the antenna cables are operatively connected to an antenna-input terminal of a tuner unit configured to receive a broadcast wave falling within a first frequency band, where the first frequency band corresponds to a length of the antenna part,
• the transmission and antenna parts stand in parallel and at a predetermined distance from each other,
• a first stranded-wire part is configured as the transmission part and includes one ground line and two audio lines configured to transmit an audio signal generated in the main-body device to at least one speaker,
• a second stranded-wire part is configured as the antenna part and is connected to the ground line,
• the antenna part works as a first antenna used for a high reception frequency, and
• the transmission part and a cable of the at least one speaker work as a second antenna used for a low reception frequency.

A junction cable configured to relay a signal and/or power generated in a main-body device including a tuner to an external cable, where one of ends of the junction cable is operatively connected to the main-body device via a connecter, and the other end of the junction cable is operatively connected to the external cable, the junction cable comprising:

• a transmission part including a plurality of stranded wire transmission cables configured to transmit the signal and/or the power;
• and
• an antenna part including a plurality of stranded wire antenna cables that are provided alongside the transmission cables of the transmission part so that the antenna part and the transmission part form a path used to transmit a broadcast wave,
• wherein,
• one ends of the antenna cables provided on the external-cable side are unconnected,
• main-body-device side ends of the transmission cables are operatively connected to a high-frequency-elimination circuit via the connecter, where the high-frequency-elimination circuit is provided in the main-body device and is configured to eliminate entry of a high-frequency signal to the main-body device,
• main-body-device side ends of the antenna cables are operatively connected to an antenna-input terminal of the tuner configured to receive a broadcast wave falling within a first frequency band via the connector, where the first frequency band corresponds to a length of the antenna part,
• the transmission and antenna parts stand in parallel and at a predetermined distance from each other,
• a first stranded-wire part is configured as the transmission part and includes one ground line and two audio lines configured to transmit an audio signal generated in the main-body device to at least one speaker,
• a second stranded-wire part is configured as the antenna part and is connected to the ground line,
• the antenna part works as a first antenna used for a high reception frequency, and
• the transmission part and a cable of the at least one speaker work as a second antenna used for a low reception frequency.