Portable radio set with a carrying holder

• US 4,325,142 A
• Filed: 07/25/1980
• Issued: 04/13/1982
• Est. Priority Date: 07/25/1980
• Status: Expired due to Term

• Current Assignee: Nippon Electric Company Limited (NEC Corporation)
• Original Assignee: Nippon Electric Company Limited (NEC Corporation)
• Inventors: Nakazawa, Kunihiro
• Primary Examiner(s): Ng, Jin F.
• Assistant Examiner(s): Chin, Tommy P.
• Application Number:
  US06/172,377
• Time in Patent Office: 627 Days
• Field of Search: 455/89, 455/90, 455/95, 455/99, 455/100, 455/128, 455/344, 455/345, 455/346, 455/347, 455/348, 455/349, 455/350, 455/351, 455/354, 179/2 E, 179/1 E
• US Class Current: 455/90.3
• CPC Class Codes: H04B 1/385 Transceivers carried on the body, e.g. in helmets
• CPC Class Codes: H04B 1/44 Transmit/receive switching
• CPC Class Codes: H04B 2001/3894 Waterproofing of transmission device

Abstract

A switch and an actuator therefore are arranged, respectively, on the portable radio unit and the carrying holder therefore in a manner such that, when the radio unit is inserted in the carrying holder, the switch is actuated to disconnect the microphone-speaker built in the radio unit or left intact, depending upon whether the radio unit is inserted with its grilled face directed backward or forward. With such arrangement, any unwanted increase in power consumption of the speaker circuit of the receiver or noise intrusion to the microphone circuit of the transmitter can be avoided even when an external microphone-speaker is connected to the radio unit. The built-in microphone-speaker can be used even in cases where the radio is carried on a person as at his waist.

Claims

1. A combination of a portable radio unit and a carrying holder for said portable radio unit, said portable radio unit having a grilled front face, first speaker means mounted so that audible sound from said first speaker means is radiated through said grilled front face, speaker circuit means for supplying said first speaker means with an audible sound signal, and first switch means for connecting and disconnecting said first speaker means to and from said speaker circuit means, said carrying holder having a switch member mounted thereon for activating said first switch means, wherein said first switch means and said switch member are respectively arranged, on said portable radio unit and said carrying holder in positions which are such that said first switch means is operated only when said portable radio unit is inserted into said carrying holder with said grilled front face oriented to be covered by said carrying holder, said first switch means being unoperated when said portable radio unit is inserted into said carrying holder with said grilled front face directed to be visible from outside.

3. A combination of claim 1, wherein said portable radio unit further comprises first microphone means combined with said first speaker means;

microphone circuit means for receiving an audible sound signal from said first microphone means; and

second switch means for selectively actuating said speaker and microphone circuit means.

5. A combination of claim 1, wherein said portable radio unit further comprises hand set means including second speaker means connected to said speaker circuit means.

7. A combination of claim 3, wherein said portable radio unit further comprises a third switch means and hand set means including second speaker and microphone means alternatively connected to said speaker and microphone circuit means by said third switch means, said third switch means being coupled to said second switch means.

9. A combination of any one of the claims 1-8, wherein said first switch means includes a reed switch and said switch member includes a magnet.

10. A combination of any one of the claims 1-8, wherein said first means includes a pushbutton type switch and said switch member includes a switch-button to be engaged with said pushbutton type switch.

2. A combination of a portable radio unit and a carrying holder for said portable radio unit, said portable radio unit having a grilled front face, first microphone means mounted therein to receive audible sound through said grilled front face, microphone circuit means for receiving from said microphone means a signal responsive to an audible sound, and first switch means for connecting and disconnecting said first microphone means to and from said microphone circuit means, said carrying holder having a switch member mounted thereon for activating said first switch means, wherein said first switch means and said switch member are respectively arranged, on said portable radio unit and said carrying holder in positions such that said first switch means is operated only when said portable radio unit is inserted into said carrying holder with said grilled front face directed to be covered by said carrying holder, said first switch means being unoperated when said portable radio unit is inserted into said carrying holder with said grilled front face directed so as to be visible from outside.

4. A combination of claim 2, wherein said portable radio unit further comprises first speaker means combined with said first microphone means;

speaker circuit means for supplying said first speaker means with an audible sound signal; and

second switch means for selectively actuating said microphone and speaker circuit means.

6. A combination of claim 2, wherein said portable radio unit further comprises hand set means including second microphone means connected to said microphone circuit means.

8. A combination of claim 4, wherein said portable radio unit further comprises a third switch means and hand set means including second speaker and microphone means alternatively connected to said speaker and microphone circuit means by said third switch means, said third switch means being coupled to said second switch means.