JPH10327017A - Portable telephone set with finding function of radio wave arrival direction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a portable telephone set with more excellent carrying performance that is surely able to detect an arrival direction of a radio wave. SOLUTION: The portable telephone set receiving a radio wave from a transmission source is provided with a portable telephone set main body 1, a front reflection plate 8 that is fitted in front of the portable telephone set main body 1 and reflects the radio wave, a side wave reflection plate 9 that surrounds a side face of the portable telephone set main body 1 to reflect the radio wave, a rotary mechanism 7 that is fitted to both ends of the front reflecting plate 8 so as to allow the side face reflection plate 9 to be turned freely, and a holder 3 attached to/detached from the portable telephone set main body 1 freely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone including a cordless telephone for transmitting and receiving.

[0002]

2. Description of the Related Art FIG. 13 is an external front view of a portable telephone. 1 is a mobile phone main body, 2 is an antenna, 14 is a liquid crystal display, and 15 is a speaker. FIG. 9 is an external top view of a conventional mobile phone with a radio wave arrival direction detecting function, and FIG. 10 is an external side view of a conventional mobile phone with a radio wave arrival direction detecting function. 2 is an antenna, 3 is a holder, and 4 is a reflector.

In a conventional mobile phone with a function of detecting the direction of arrival of a radio wave, the combined characteristics of the antenna 2 and the reflector 4 are directional, particularly in a horizontal plane, by mounting the reflector 4 on the body 1 of the mobile phone via the holder 3. Strong directivity.

In the portable telephone 1, the received power level is displayed on the liquid crystal display 14. The display method is a level display using a relative numerical value, and is a display using a bar-shaped level meter. Further, the received power level can be expressed by the intensity of the sound emitted from the speaker 15 or the pitch of the sound.

[0005] Therefore, while checking the received power level displayed on the liquid crystal display 14, the user holds, for example, the mobile phone main body 1 and rotates the mobile phone so that the direction having the higher directivity gain makes one round of the horizontal plane. The direction in which the displayed value shows the largest value can be determined as the arrival direction of the radio wave. When noise is generated during use of the mobile phone, the noise can be reduced by directing the mobile phone toward the base station or the base unit.

FIG. 11 is a top view of an external appearance of a mobile phone with a radio wave arrival direction detecting function in the case where a reflector having both ends of the reflector bent in the same direction is used as the reflector, and FIG. 12 is an exterior side view. . Reference numeral 5 denotes a bent reflecting plate. By using the bent reflector 5, the directivity can be further enhanced.

[0007]

A conventional portable telephone with a radio wave arrival direction detecting function is constructed as described above, and uses a metal plate or a metal plate bent at a predetermined angle as a reflection plate. Therefore, there is a problem that the dimensions are large and the portability is poor.

Further, when a metal flat plate is used as the reflection plate, there is a problem that the metal flat plate is generally heavy and has low portability.

The prior art as a publication includes Japanese Utility Model Application
There are JP-A-48207, JP-A-6-188617 and JP-A-6-188618, but these prior arts could not solve such a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a portable telephone capable of detecting the direction of arrival of radio waves with superior portability.

[0011]

According to a first aspect of the present invention, there is provided a portable telephone with a radio wave arrival direction detecting function, a portable telephone main body, a front reflector attached to a front of the portable telephone main body and reflecting a radio wave; A side reflector that surrounds the side surface of the telephone body and reflects radio waves, a rotation mechanism attached to both ends of the front reflector so as to freely rotate the side reflector, and a reflector that is detachable from the mobile phone body And a holder, wherein the side reflector can be freely rotated.

In the portable telephone with a radio wave arrival direction detecting function according to a second aspect of the present invention, the front reflector and the side reflectors are made of a metal mesh that reflects radio waves.

According to a third aspect of the present invention, there is provided a mobile phone with a radio wave arrival direction detecting function, comprising: a mobile phone main body; a front radio wave absorbing plate attached to the front of the mobile phone main body for absorbing radio waves;
A side radio wave absorbing plate surrounding the side surface of the mobile phone main body and absorbing radio waves, a rotating mechanism attached to both ends of the front radio wave absorbing plate to freely rotate the side radio wave absorbing plate, and a mobile phone main body. A detachable radio wave absorbing plate holder is provided so that the side surface radio wave absorbing plate can freely rotate.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an external top view of a mobile phone showing one embodiment of the present invention, and FIG. 2 is an external side view of a mobile phone showing one embodiment of the present invention. 1 is a mobile phone body, 3 is a holder as a reflection plate holder, 8 is a metal flat front reflection plate,
Reference numerals 9 and 9a denote metal plate side reflectors, 6 a helical antenna, and 7 and 7a a rotating mechanism. The mobile phone with the radio wave arrival direction detecting function configured as described above receives a radio wave transmitted from a transmission source such as a base station or a base unit and performs a telephone call. FIG. 3 is a diagram showing a use state of the mobile phone with a radio wave arrival direction detecting function, and 16 is a human head.

The portable telephone body 1 is provided with an antenna such as a helical antenna 6 having omnidirectional characteristics in a horizontal plane. The metal flat front reflector 8 is fixed to the holder 3, and the holder 3 is fixed to the mobile phone body 1.

Rotating mechanisms 7 and 7a are provided at both ends of the flat metal front reflector 8, one end of the flat metal side reflector 9 is attached to the rotating mechanism 7, and one end of the flat metal side reflector 9a is connected to the rotating mechanism 7a. Attached to. The metal flat side reflectors 9 and 9a can be rotated by the rotating mechanisms 7 and 7a so as to surround the mobile phone main body 1. The metal flat side reflection plates 9 and 9a can be freely rotated and stopped. When noise is generated during a call by the mobile phone main body 1 and it is desired to know the direction of transmitting radio waves from a base station, a base unit, or the like in order to stabilize the call, the reflectors 8, 9, 9a are connected to the mobile phone. By attaching to the main body 1, directivity can be provided.

When viewed from the helical antenna 6 with respect to the horizontal plane, the direction of the flat metal front reflector 8 has a low reception level, and the opposite direction has a directivity that the reception level is high. In addition, a metal flat plate side reflection plate 9, 9
When the mobile phone 1 is moved to surround the mobile phone main body 1, when viewed from the helical antenna 6, the metal flat plate side reflector 9,
The radio wave in the direction surrounded by 9a is a metal flat plate side reflector 9,9.
a, it is difficult for radio waves to reach. Therefore, the directivity can be further enhanced. Thus, the directivity of the opening portion of the mobile phone main body 1 that is not surrounded by the metal flat front reflector 8 and the metal flat side reflectors 9, 9a is formed by the metal flat front reflector 8 and the metal flat side reflectors 9, 9a. Can be strengthened.

In the portable telephone 1, the received power level can be expressed by the intensity of the sound emitted from the speaker 15 or the pitch of the sound.

Then, while checking the received power level, the user holds, for example, the portable telephone body 1 and
The opening a is rotated so as to make one round of the horizontal plane. The direction in which the received power level shows the highest is determined as the arrival direction of the radio wave, and the arrival direction of the radio wave can be known by directing the openings of the reflectors 9 and 9a in that direction.

FIG. 3 shows the positional relationship between the portable telephone body 1 to which the reflectors 9 and 9a are attached and the human head 16.

FIG. 4 is an external front view of a portable telephone showing one embodiment of the present invention. When the reflectors 9 and 9a are attached to the mobile phone main body 1, corresponding portions of the metal flat front reflector 8 are set so that the metal flat front reflector 8 does not block the speaker 15 and the display 14 so that a telephone conversation can be performed without inconvenience. Make a hole in the hole.

Embodiment 2 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 5 is an external top view of the mobile phone main body 1 showing one embodiment of the present invention, and FIG. 6 is an external side view of the mobile phone main body 1 showing one embodiment of the present invention. Reference numeral 10 denotes a metal mesh front reflector, and 11 and 11a denote metal mesh side reflectors.

In the first embodiment, the metal flat front reflector 8 and the metal flat side reflectors 9 and 9a are metal flat plates.
0 and metal mesh side reflectors 11 and 11a. In the case of a metal mesh, if the interval between the meshes is sufficiently narrower than the wavelength, the radio wave is blocked, and the function is equivalent to that of a metal flat plate.

Embodiment 3 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 7 shows a mobile phone body 1 showing an embodiment of the present invention.
FIG. 8 is an external side view of the mobile phone body 1 showing an embodiment of the present invention. Numeral 12 is a front radio wave absorbing plate, and 13 and 13a are side radio wave absorbing plates. 1
Reference numeral 7 denotes a front mounting plate on which the front radio wave absorbing plate 12 is mounted, and reference numerals 18 and 18a denote side mounting plates on which the side radio wave absorbing plates 13 and 13a are mounted.

The portable telephone body 1 is provided with a non-directional antenna such as a helical antenna 6, for example.
Rotation mechanisms 7 and 7a are provided at both ends of the front mounting plate 17, one end of the side mounting plate 18 is mounted on the rotating mechanism 7, and one end of the side mounting plate 18a is mounted on the rotating mechanism 7a. The front mounting plate 17 is fixed to the holder 3,
The holder 3 is fixed to the mobile phone main body 1. The front radio wave absorbing plate 12 is mounted outside the front mounting plate 17, and the side radio wave absorbing plates 13 and 13a are mounted outside the side mounting plates 18 and 18a, respectively. In this case, the front radio wave absorbing plate 1
The second and side radio wave absorbing plates 13 and 13a are usually made of a soft material and cannot stand on their own. If the front radio wave absorbing plate 12 and the side radio wave absorbing plates 13 and 13a are made of a sufficiently strong material, the front mounting plate 1
7 and the side mounting plates 18 and 18a become unnecessary. The outer surfaces of the front radio wave absorbing plate 12 and the side radio wave absorbing plates 13 and 13a are processed to prevent damage due to handling, or a protective film or the like is attached. The radio wave absorbing plates 12, 13, 13a are not limited to the outside of the mounting plates 17, 18, 18a, and may be inside, or the mounting plates 17, 18, 18a may be mounted in a sandwich form from both the outside and the inside. .

The side radio wave absorbing plates 13 and 13a can be rotated by the rotating mechanisms 7 and 7a so as to surround the portable telephone body 1. The side radio wave absorbing plates 13 and 13a can be freely rotated and stopped. For example, when noise is generated during a call by the mobile phone body 1 and it is desired to know the direction of transmission of radio waves from a base station or a base unit in order to stabilize the call,
By attaching the radio wave absorbing plates 12, 13, 13a to the mobile phone main body 1, directivity can be provided. When viewed from the helical antenna 6 in the horizontal plane, the direction of the front radio wave absorbing plate 12 has a directivity in which the reception level is low and the opposite direction has a high reception level.

When the side radio wave absorbing plates 13 and 13a are moved to surround the portable telephone body 1, when viewed from the helical antenna 6, the radio waves in the direction surrounded by the side radio wave absorbing plates 13 and 13a become side radio waves. Radio waves are difficult to reach because they are blocked by the absorption plate. Therefore, the directivity can be further enhanced.

As described above, by the front radio wave absorbing plate 12 and the side radio wave absorbing plates 13 and 13a, the portable telephone body 1 can control the directivity of the opening not surrounded by the front radio wave absorbing plate 12 and the side radio wave absorbing plates 13 and 13a. Can be stronger.

The portable telephone 1 displays the received power level on the liquid crystal display 14. The display method is
It is a level display by a relative numerical value, and is a display by a bar-shaped level meter. Further, the received power level may be expressed by the intensity of the sound emitted from the speaker 15 or the pitch of the sound.

Then, while checking the received power level displayed on the liquid crystal display 14, the user holds, for example, the portable telephone body 1 so that the openings of the radio wave absorbing plates 12, 13, 13a make one round of the horizontal plane. Rotate to. The direction in which the displayed value shows the largest is determined as the arrival direction of the radio wave, and the arrival direction of the radio wave can be known by directing the openings of the radio wave absorption plates 12, 13, and 13a in that direction. When the radio wave absorbing plates 12, 13, 13a are attached to the mobile phone main body 1, the front radio wave absorbing plates 12, 13 and 13a are connected so as to be able to communicate without inconvenience.
A hole or the like is formed in a corresponding portion of the radio wave absorbing plate so that the speaker 15 and the display 14 are not blocked.

[0031]

As described above, according to the present invention, since the reflector is attached to the main body of the portable telephone, the antenna has a directivity in a horizontal plane as a combined surface of the reflector and the antenna.
The direction of arrival of the radio wave can be detected, and when noise occurs during use of the mobile phone, the direction in which the mobile phone has high directivity can be known as the direction of arrival of the radio wave. Further, even if a radio wave absorbing plate is used instead of the reflecting plate, the arrival direction of the radio wave can be similarly known. By knowing the arrival direction of the radio wave, if the radio wave is advanced in the arrival direction, the reception level is increased, so that noise can be reduced and stable communication can be performed.

According to the first aspect of the invention, when it is not necessary to detect the direction of arrival of the radio wave, the reflector and the reflector holder are detached from the main body of the mobile phone, and the side reflector is rotated to be folded toward the front reflector. As a result, the size is reduced and portability is improved. In addition, since the directivity can be changed according to the use conditions, the detection of the arrival direction of the radio wave becomes easier.

According to the second aspect of the present invention, the use of a metal mesh for the front reflector and the side reflectors allows the portability to be improved because the mass is generally lighter than that of the metal flat plate. In addition, the display portion of the mobile phone body is easy to see because of the mesh shape, and the sound is easy to hear because the speaker is not hidden.

According to the third aspect of the present invention, the front and side reflectors using a radio wave absorber are used instead of the front and side reflectors, so that the weight is generally smaller than that of a metal flat plate. Is light, so portability is improved.

[Brief description of the drawings]

FIG. 1 is an external top view of Embodiment 1 of the present invention.

FIG. 2 is an external side view of the first embodiment of the present invention.

FIG. 3 is a use state diagram of the first embodiment of the present invention.

FIG. 4 is an external front view of the first embodiment of the present invention.

FIG. 5 is an external top view of Embodiment 2 of the present invention.

FIG. 6 is an external side view of a second embodiment of the present invention.

FIG. 7 is an external top view of Embodiment 3 of the present invention.

FIG. 8 is an external side view of a third embodiment of the present invention.

FIG. 9 is an external top view of a conventional mobile phone with a radio wave arrival direction detecting function.

FIG. 10 is an external side view of a conventional mobile phone with a radio wave arrival direction detecting function.

FIG. 11 is an external top view of a conventional mobile phone with a radio wave arrival direction detecting function using a reflector bent in the antenna direction.

FIG. 12 is an external side view of a conventional mobile phone with a radio wave arrival direction detecting function using a reflector bent toward an antenna.

FIG. 13 is an external front view showing a mobile phone main body.

[Explanation of symbols]

1. Mobile phone body, 3 holder, 7 rotation mechanism, 8
Metal flat front reflector, 9 Metal flat side reflector, 10
Metal mesh front reflector, 11 metal mesh side reflector, 12 front radio wave absorber, 13 side radio wave absorber, 17 front mounting plate, 18 side mounting plate.

Claims (3)

[Claims] 1. A mobile phone for receiving radio waves transmitted from a transmission source, comprising: a main body of a mobile phone; a front reflector attached to a front of the main body of the mobile phone for reflecting radio waves; A side reflector that reflects radio waves, a rotation mechanism attached to both ends of the front reflector so as to freely rotate the side reflector, and a reflector holder that is detachable from the mobile phone body. A mobile phone with a radio wave direction-of-arrival detection function. 2. The mobile phone with a radio wave arrival direction detecting function according to claim 1, wherein the front reflector and the side reflectors are made of a metal mesh that reflects radio waves. 3. A mobile phone for receiving radio waves transmitted from a transmission source, comprising: a mobile phone main body; a front radio wave absorbing plate attached to a front of the mobile phone main body for absorbing radio waves;
A side radio wave absorbing plate surrounding the side surface of the mobile phone main body and absorbing radio waves, a rotating mechanism attached to both ends of the front radio wave absorbing plate to freely rotate the side radio wave absorbing plate, and a mobile phone main body. A mobile phone with a radio wave arrival direction detecting function, comprising a detachable radio wave absorbing plate holder.