JPH08274525A - Extension antenna for portable radio equipment - Google Patents

Abstract

PURPOSE: To provide the optimum reception state for vertically polarized waves by using the antenna in almost vertical state by providing a freely rotatable joint at the part outside a casing when the extension antenna is pulled out. CONSTITUTION: A freely rotatable joint J is provided near outside the casing when an antenna 11 is pulled out. In the state of putting the microphone and speaker of a casing 1 close to the mouth and ear, the antenna 11 is turned around the joint J so that the antenna 11 in a vertical direction V. Thus, when using, the antenna can be turned in the polarizing direction and communication can be performed with high accuracy. In this case, the antenna can be easily used by providing a spring mechanism at the joint J so as to make the antenna turned by a prescribed angle when the antenna 11 is pulled out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic antenna for improving the sensitivity of a portable wireless device.

[0002]

2. Description of the Related Art In mobile communication using a portable wireless device, vertical polarization is used to realize omnidirectionality in which a person using the wireless device can use the wireless device regardless of the direction of north, south, east, west or west. Is used. A dipole antenna is widely used as a telescopic antenna of a portable wireless device in order to efficiently transmit and receive the vertically polarized wave and to easily expand and contract. The antenna is housed in the longitudinal direction of the radio housing when not in use, and is used by pulling out in the longitudinal direction of the housing when making or receiving a call.

[0003]

FIG. 2 shows a use state of a portable wireless device having a conventional telescopic antenna.
Since the microphone and the speaker for transmission are used so as to approach the human mouth and ear, respectively, the housing 1 of the wireless device is inclined, and therefore the antenna 40 is also used in a state of being inclined along the direction G. . The dipole antenna is in an optimum transmission / reception state for vertically polarized waves when it is oriented in the vertical direction V, but if it is tilted as described above, the sensitivity decreases.

[0004]

SUMMARY OF THE INVENTION The present invention relates to a telescopic antenna of a portable wireless device which is housed in the housing of the portable wireless device and which is pulled out of the housing at the time of use, in a portion located at the housing outlet when pulled out. Disclosed is a telescopic antenna for a portable wireless device, which is provided with a rotatable joint.

Further, according to the present invention, there is provided a telescopic antenna for a portable wireless device, which is housed in the housing of the portable wireless device and is pulled out to the outside of the housing at the time of use. Disclosed is a telescopic antenna for a portable wireless device, which is provided with a mechanism for tilting in a direction.

[0006]

When the antenna is pulled out, the direction of the antenna can be changed by providing a rotatable joint so that the antenna can be used vertically. Also, when the microphone and speaker on the front of the housing are applied to the mouth and ears, respectively, the top of the housing falls rearward from the bottom when viewed from the front of the housing, and it is held to the right (when held with the left hand) or left (when held with the right hand). When the antenna is tilted in the opposite direction to the housing, it can be used almost vertically.

[0007]

The present invention will be described below with reference to examples. FIG.
Shows an embodiment of the telescopic antenna of the present invention, in a state where the microphone and the speaker of the housing 1 are respectively applied to the mouth and the ear and the antenna 11 is pulled out so that the antenna 11 is in the vertical direction V. Be prepared to change the angle. For this reason, a rotatable joint J is provided near the housing outlet when the antenna is pulled out. Normally, the housing, and hence the antenna, is not tilted vertically as viewed from the front or the side as shown by the dotted line in FIG. 1, but the antenna 11 is oriented in the vertical direction V from either direction. , Joint the antenna 11 J
Rotate around.

The direction of rotation differs depending on whether the portable wireless device housing 1 is held by the left hand or the right hand. That is, when holding it in the left hand, it is rotated so as to incline to the right and front when viewed from the front of the housing. To hold it in the right hand, rotate it so that it tilts to the left and to the front when viewed from the front of the housing.

The rotation angle of this rotation varies depending on the user and the posture of the user. However, even if the antenna is slightly deviated from the vertical direction, the call can be normally made.
It is easier to use if a spring mechanism is provided in and the state is such that the spring mechanism is rotated by a predetermined angle when the spring mechanism is pulled out. Further, by providing a mechanism in which the antenna is pulled out by the force of a spring or the like when the button is pushed, a more convenient portable wireless device can be realized.

[0010]

According to the present invention, the antenna can be oriented in the direction of polarization when the portable radio is used, and communication can be performed with high sensitivity.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a telescopic antenna of the present invention.

FIG. 2 is an operation explanatory view of a conventional telescopic antenna.

[Explanation of symbols]

 1 housing 11 antenna J joint

Claims (3)

[Claims] 1. An expandable antenna for a portable wireless device, which is housed inside a portable wireless device housing and is pulled out of the housing when in use, wherein a rotatable joint is provided at a portion located at the housing outlet when pulled out. Telescopic antenna for portable radios. 2. An expandable antenna for a portable wireless device, which is housed inside a portable wireless device housing and is pulled out of the housing when in use, is tilted toward the front side of the housing and the side surface of the housing rather than the housing direction when pulled out. Telescopic antenna for portable radios, which is equipped with a mechanism. 3. The telescopic antenna for a portable wireless device according to claim 1, wherein the withdrawal from the housing is performed by a spring mechanism that is operated by operating a button.