Hands free apparatus for land mobile radio telephone

A land mobile radio telephone apparatus, comprising a microphone unit for inputting speeches to be transmitted, said microphone unit being incorporated in a plug for insertion into a cigar lighter socket provided near a driver's seat in a vehicle, a radio telephone apparatus body to which the plug with said microphone unit built therein is connected via cables for supplying power from a power source and a cable for inputting the speeches, and a speaker unit for outputting received voices being built in said radio telephone body.

A land mobile radio telephone apparatus to which power is supplied from a vehicle-mounted battery through a cigar lighter plug for insertion into a cigar lighter socket, wherein said cigar lighter socket has an end portion of a casing thereof, said end portion being shaped in a tubular form, wherein a microphone having a directivity is incorporated in said tubular end portion in such manner that it can be semi-fixed, and wherein the directivity of the microphone is directed toward a driver.

A land mobile radio telephone apparatus comprising a radio telephone apparatus body disposed in a vehicle, power being supplied to said apparatus body via cables from a cigar lighter plug for insertion into a cigar lighter socket provided in front of a driver's seat in the vehicle, a microphone unit incorporated in said cigar lighter plug for inputting speeches to be transmitted, and a speaker unit for outputting received speeches and a circuit unit for suppressing sound coupling of said microphone unit and said speaker unit, said speaker unit and said suppressing circuit being provided in said radio telephone apparatus body, wherein the microphone unit for inputting speeches to be transmitted, said microphone unit having an adjustable directivity, is provided in said cigar lighter plug by means of a directivity adjusting mechanism.