JP2002261646A - Radio transmitting and receiving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable microwave band radio having a neat appearance, not requiring extra space to be equipped with an antenna element. SOLUTION: A handle 11 for carriage has a built-in antenna element 12 capable of transmitting or receiving desired microwave band radio signals inside. The antenna element 12 makes an electrically coupling state with a radio transmitting and receiving circuit 14 via a fixing metal screw on the bottom of the antenna element 12 and a micro strip line 15. This radio may make up a diversity antenna by incorporating two antenna elements inside the two individual regions of the handle 11 that are parallel to each other. Also, the antenna element 12 may be made of a metal monopole antenna or a dipole antenna, or may be formed with a micro strip line printed on a flexible board that can be deformed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio transmission / reception device using a microwave band, a radio transmission device alone, and a radio reception device alone. In particular, liquid crystal televisions and CRTs
The present invention relates to a portable small and medium wireless transmission / reception device that is applied to a television device or the like. In addition, IEEE
The present invention is applied to a portable wireless transmission / reception device for transmitting / receiving a video signal using an SS (Spectrum Spread) wireless system conforming to 802.11 or IEEE 802.11B. Furthermore, a PHS (Personal Handy-Ph), a next-generation mobile phone device with a higher data transfer speed,
One System) or large and medium videophones using Blue Tooth technology.

[0002]

2. Description of the Related Art As to a portable portable radio transmitting and receiving apparatus such as a small liquid crystal television apparatus and a CRT television apparatus, for example, in a portable liquid crystal television apparatus 1, as shown in FIG. In many cases, the indoor antenna element 12a is provided.

On the other hand, in a television apparatus 1a not provided with such an indoor antenna element, as shown in FIG. 13, radio waves of terrestrial broadcasting and satellite broadcasting are installed outdoors (ie, in a garden, on a roof, on a veranda, etc.). In general, a product is connected to a dedicated outdoor antenna element 12b through a coaxial cable 17a to an F-type connector provided in a tuner unit.

[0004] As shown in FIG. 14, in a portable small-sized portable liquid crystal television device and a portable monitor device, a so-called hand-held device for carrying by hand in consideration of simplicity in carrying. In many cases, a handle portion 11a is provided. In particular, in the case of a fragile and thin precision instrument, such as the liquid crystal television device 1, since there are few projections other than the indoor antenna element 12a, there are few portions to be carried by hand when carrying the device. Also, a handle 11a is provided.

[0005]

The "AV wireless transmission transmitter" (product name of Sharp Corporation "AN-AV300T") and the "AV wireless transmission receiver" (product of Sharp Corporation) which have recently been commercialized. Name "AN-AV
301R, 302R ") and the like, in a wireless transmission / reception device that transmits / receives a video signal by a wireless signal, a product that transmits / receives a video signal using infrared rays as a wireless carrier signal has appeared. In the case of such a wireless transmission / reception apparatus for video signals using infrared light, short-range wireless communication is used, and it is not necessary to equip an antenna element as shown in FIG.

However, even in such an infrared wireless transmission / reception device that does not require an antenna element, the SS (Spectrum Sp
read) wireless system, PHS (Personal
Handy-Phone System) In the case of a wireless data transmission system, as shown in FIG. 16, the optimum antenna element 12c for transmitting and receiving such a carrier frequency is used.
Must be attached to the wireless transmission / reception device.

Further, when a microwave band radio system such as the SS radio system is used, as shown in FIGS. 12 and 13, the indoor antenna element 12a is provided, or the external antenna element (the outdoor antenna element) is used. Even when an F-type connector for wired connection by a coaxial cable 17a from the element 12b is installed, another antenna system is required in addition to such equipment.

However, especially in a portable radio transmission / reception device, a new installation place (space) for an additional antenna element is required, so that space efficiency is deteriorated, portability is deteriorated, and the antenna needs to be installed. Since a book is also provided, an unfavorable situation arises, such as an increase in design constraints and an increase in cost.

[0009] The present invention has been made in view of such circumstances, and in particular, in a portable wireless transmission / reception device composed of thin precision equipment, such as a liquid crystal television device, a “handle portion” always provided. , Inside the antenna element, when adding an antenna element, no extra space is required, and further, it is possible to configure an antenna element having even a diversity antenna function. . Furthermore, by making it possible to freely adjust the length and the mounting angle of the antenna element to any position, it is not possible to exhibit optimum antenna characteristics at any place where such a wireless transmitting / receiving device is installed. It is assumed that.

[0010] Further, with respect to the storage location when the antenna element is not used, the projection of the antenna element does not protrude to the outside when the antenna element is stored, so that the antenna element is inadvertently applied to the antenna element. An antenna element is constructed by a microstrip line on a flexible substrate that can be flexibly deformed, as well as an aesthetically pleasing radio transceiver without element damage. Is to be performed smoothly. In addition, the wireless transmission / reception circuit unit is also incorporated in the “handle” together with the antenna element, thereby shortening the distance from the antenna element to the wireless transmission / reception circuit unit and reducing the propagation loss of a high-frequency signal.

[0011]

A radio transmitting / receiving apparatus according to the present invention comprises the following technical means. First, a first technical means is to provide a portable wireless transmission / reception device having a built-in antenna element capable of transmitting / receiving a desired microwave band radio signal inside a handle provided for carrying. Via a microstrip line electrically connected to the antenna element,
A wireless transmission / reception device for feeding power to the antenna element.

According to a second technical means, in the wireless transmitting / receiving apparatus according to the first technical means, the antenna elements are respectively incorporated in two portions of the handle portion in a parallel positional relationship, and the diversity is provided. A wireless transmitting and receiving device constituting an antenna is characterized.

[0013] A third technical means is the antenna transmitting / receiving device according to the first or second technical means, wherein the antenna element incorporated in the handle is slidable in the vertical direction. By providing a slidable fastener on the attachment portion of the handle portion, a wireless transmission / reception device capable of freely adjusting the length of the handle portion with the built-in antenna element in a vertical direction. It is a feature.

According to a fourth technical means, in the wireless transmission / reception device according to the first or second technical means, the shape of the bottom of the antenna element incorporated in the handle is spherical, and the shape of the bottom is spherical. By providing a stopper member that can be fitted with an antenna element supporting portion made of and that can stop the antenna element at an arbitrary angular position, the handle with the built-in antenna element can be used as a main body of a wireless transmitting and receiving apparatus. The wireless transmission / reception device is capable of rotating and adjusting the angle to be made to an arbitrary position and stopping the rotation.

According to a fifth technical means, in the wireless transmitting / receiving apparatus according to any one of the first to fourth technical means, a concave portion for accommodating the handle portion is provided on a back surface of a cabinet of the wireless transmitting / receiving apparatus. A wireless transmission / reception device is provided.

A sixth technical means is the wireless transmitting / receiving apparatus according to any one of the first to fifth technical means, wherein the antenna element comprises a metal monopole antenna or a dipole antenna. It is characterized by being a device.

According to a seventh technical means, in the wireless transmitting / receiving apparatus according to any one of the first to fifth technical means, the antenna element is printed on a hard substrate or on a deformable flexible substrate. And a wireless transmission and reception device comprising a microstrip line.

According to an eighth technical means, in the wireless transmission / reception device according to any one of the first to seventh technical means, both the antenna element and a wireless transmission / reception circuit unit for supplying power to the antenna element include the wireless transmission / reception circuit unit. The wireless transmission / reception device is built in the inside of the handle.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an embodiment relating to a radio transmitting / receiving apparatus according to the present invention will be described below with reference to the drawings. First, the configuration of the wireless transmitting and receiving apparatus according to the first technical means will be described with reference to FIG. FIG. 1 illustrates a case where a pole-type antenna according to a wireless transmission / reception apparatus serving as a sixth technical means is used as an antenna element. Here, FIG.
FIG. 1 is a structural diagram showing an embodiment of a wireless transmission / reception device according to the present invention. When a portable liquid crystal television device 1 is used as a wireless transmission / reception device, a cabinet 10 of the liquid crystal television device 1 is used. The structure on the back side is schematically shown.

As shown in FIG. 1, an antenna element 12 for transmitting and receiving a carrier frequency by a radio system (for example, an SS radio system) based on a microwave band radio signal is built in one part of a handle portion 11 used for carrying. Have been.
Two screws 13 screwed together to attach the handle portion 11 to the cabinet 10 of the liquid crystal television device 1;
One of the screws 13 ′ is electrically connected to the bottom of the antenna element 12 buried in the handle 11, and the screw 13 is connected to a microstrip line 15. , Antenna element 12 and microstrip line 15 are electrically connected to each other.

The microstrip line 15 is
It is electrically connectable to the wireless transmission / reception circuit unit 14 built in the cabinet 10 of the liquid crystal television set 1, and the screw 13 is also a feeding point for feeding power to the antenna element 12. .

The material of the handle 11 may be made of leather,
Even if it is made of resin plastic, any material can be used as long as it has a portable strength, but it has an electric shielding effect on the antenna element 12 for transmitting and receiving a microwave signal such as a built-in SS radio signal. A different metal material cannot be used.

Further, as shown in FIG. 2, the handle portion 11 is attached to the cabinet 10 of the liquid crystal television set 1 so as to be rotatable 180 degrees from a downward direction to an upward direction via a horizontal direction. In addition, the handleability of the handle 11 is improved. Here, FIG.
FIG. 2 is a schematic diagram showing an example in which the liquid crystal display device 1 is attached to the back surface of a cabinet 10 of the liquid crystal television device 1 so as to be rotatable 180 degrees from upward to downward. That is, FIG.
FIG. 2B is a schematic view showing a state in which the handle portion 11 is housed downward on the back surface of the cabinet 10 of the liquid crystal television device 1, and FIG. 2B is a diagram in which the handle portion 11 is turned 180 degrees upward and is portable. FIG. 4 is a schematic diagram showing a state where the position is set to a proper position. FIG. 2C shows that the handle 11 is connected to the cabinet 10 of the liquid crystal television device 1 by 18.
FIG. 4 is a structural view showing an example of a rotating member 16 forming a fulcrum for being rotatably mounted at 0 degrees.

That is, the rotating member 1 for attaching the handle 11
As shown in FIG. 2 (C), a rotating member having a shape similar to the shape of the rotating member for attaching the handle, which is often used for the handle of the business bag, can be used as the member 6.

Next, a signal transmission / reception state between the antenna element 12 built in the handle 11 and the radio transmission / reception circuit section 14 built in the cabinet 10 of the liquid crystal television set 1 will be described with reference to FIG. explain. Here, FIG. 3 illustrates the antenna element 12 and the wireless transmission / reception circuit unit 14.
FIG. 3 is a connection configuration diagram showing an example of connection with the STA. As shown in FIG. 3, the antenna element 12 is connected to a connection terminal 14e of a wireless transmission / reception circuit unit 14 via a microstrip line 15 via a screw 13 also serving as a feeding point.

On the other hand, the radio transmitting / receiving circuit section 14 has a transmitting circuit section (TX) 14a for transmitting a radio signal and a receiving circuit section (RX) 14b for receiving a radio signal. A band pass filter (BPF) 14 d for transmitting and receiving only the frequency band of the radio signal includes a connection terminal 14 e to the antenna element 12 and a transmission circuit unit 14.
a and the receiving circuit section 14b.

The radio signal to be transmitted and received is SS radio,
TD using a high frequency signal in the microwave band like PHS radio or BlueTooth radio
In preparation for performing time division multiplex communication by an MA (Time Division Multiplex Access) communication method, the transmission circuit unit 14a and the reception circuit unit 14
b, a time-division changeover switch 14c for switching the connection with time is connected to the output terminal of the transmitting circuit unit 14a, the input terminal of the receiving circuit unit 14b, and the band-pass filter (BP).
F) It is interposed between 14d.

With this connection configuration, a radio signal input / output to / from the radio transmission / reception circuit unit 14 is transmitted to the antenna element 12 via the microstrip line 15 and the metal screw 13, and the antenna element 12 As described above, it is necessary to short-circuit the metal strip 13 so that it can be electrically connected to the microstrip line 15 by the conductive metal screw 13.

Therefore, for example, as shown in FIG. 4, the screw head 13a and the screw hole 13b, which are the contact portions of the screw 13 with the microstrip line 15, are previously made of a conductive material such as copper plating or silver plating. It is to be covered with a material having high properties. FIG. 4 is a cross-sectional view showing the structure of the mounting portion of the antenna element 12. That is, in FIG. 4, the screw head 13 a is pattern-landed by copper plating or silver plating, and is in a state of being electrically connected to the bottom of the antenna element 12. Screw hole 1 formed in a printed circuit board 20 on which the wireless transmission / reception circuit unit 14 is mounted.
The surface of 3b is also plated with copper or silver to form through-holes, so that the microstrip line 15 and the screw 13 are electrically tightly connected. Therefore, the electrical coupling state between the antenna element 12 and the wireless transmission / reception circuit unit 14 can be maintained in a closer state.

In general, the SS radio system and the Blue
The antenna length of the antenna element 12 for the frequency band of 2.4 GHz used in the Tooth wireless system or the like is as follows:
It is about 3 cm, which corresponds to 1/4 of the wireless wavelength. Therefore,
Compared with the antenna length of the antenna element for the VHF or UHF frequency band, the antenna length is greatly shortened, and a long antenna such as a rod-type antenna is unnecessary. In such portable wireless transmission / reception devices, the antenna element may be a projection that cannot be ignored.

If the antenna structure having the structure according to the present invention is adopted, as shown in FIG. 1, the handle attached to the cabinet 10 of the liquid crystal television set 1 to carry the liquid crystal television set 1. The antenna element 11 having a length of about 3 cm is built in the part 11. Therefore, even in the case of a portable liquid crystal television device that uses infrared wireless and originally did not require an antenna element, the handle portion 11 is always provided so as to be portable. SS wireless system and Blue used together with infrared wireless system
By incorporating an antenna element 12 for transmitting and receiving a microwave band wireless signal such as a Tooth wireless system, no extra space is added to the liquid crystal television set 1 and no extra projection is generated. , And a neat structure. That is, by using such a liquid crystal television device, a portable liquid crystal television device having a clean structure capable of sharing an infrared radio signal without an antenna element and an SS radio signal with an antenna element is realized. Can be.

In general, when the handle 11 is made of resin, the inside of the handle 11 is often hollow, and the space for incorporating the antenna element 12 is increased. It is not necessary to perform a special resin molding process for newly securing inside the resin 11, and the existing resin molding process can be used as it is, and an increase in manufacturing cost can be suppressed.

Next, a radio transmitting / receiving apparatus according to the second technical means of the present invention will be described with reference to FIG. FIG. 5 is a structural diagram showing an example of another embodiment of the wireless transmitting / receiving apparatus according to the present invention.
The liquid crystal television set 1 has a handle 11 attached to a cabinet 10 of the liquid crystal television set 1 and another antenna element built therein. That is, it is in a positional relationship parallel to the built-in antenna element 12 connected to one screw 13 of the handle portion 11 and
By providing the other antenna element 12 'built therein so as to be connected to the other screw 13', it is possible to form a diversity antenna configuration using two antenna elements.

Here, for example, the antenna element 12
As described above, to function as the main antenna element,
It is electrically connectable to the radio transmission / reception circuit unit 14 via the microstrip line 15, while the other antenna element 12 ′ is connected to the radio transmission / reception circuit unit 14 to function as a diversity sub-antenna element. Are electrically connected by a coaxial cable 17 or the like.

The coaxial cable 17 and the like are constructed so as to be built in the cabinet 10 of the liquid crystal television set 1, but the other antenna element 12 'is used.
Is a sub-antenna element for diversity.
Since it is far from the wireless transmission / reception circuit unit 14, power cannot be supplied by the microstrip line, and a wireless signal must be transmitted through the coaxial cable 17 or the like, transmission loss occurs. This is because when transmitting and receiving signals in the above, the signal level will be reduced.

Incidentally, the positional relationship between the main antenna element 12 and the sub-antenna element 12 ′ is 、 wavelength of a radio signal (for example, in the 2.4 GHz frequency band used in the SS radio system or the Blue Tooth radio system). ,
Distance that is not an integral multiple of about 3 cm), and
It is desirable to be at a position separated by a wavelength or more. Here, for example, even in a small liquid crystal television device of about 5 inches (about 13 cm), a half wavelength or more, that is,
It is not difficult to provide a handle having a length of not less than cm.

Next, in the radio transmission / reception apparatus according to the second technical means of the present invention, the antenna elements 12, 12 'built in the handle 11 and the radio transmission / reception built in the cabinet 10 of the liquid crystal television set 1 will be described. Circuit part 1
4 will be described with reference to FIG. FIG. 6 is a connection configuration diagram showing another example of the connection between the antenna elements 12 and 12 'and the radio transmission / reception circuit unit 14, and the second configuration of the diversity antenna.
FIG. 3 is a connection configuration diagram relating to the invention according to the technical means.

In FIG. 6, a diversity switch 14f is further added to the connection between the antenna element 12 and the radio transmission / reception circuit unit 14 in the first technical means shown in FIG. The antenna elements 12 and 12 'are electrically connected to the radio transmission / reception circuit unit 14 so that power is supplied to the antenna elements 12 and 12' in a time-division manner as in the case of FIG.

That is, as in the case shown in FIG. 3, the main antenna element 12 is
The microstrip line 15 is electrically connected to the connection terminal 14e of the wireless transmission / reception circuit unit 14 in a time division manner by the diversity switch 14f.

On the other hand, the sub-antenna element 12 'is connected to the connection terminal of the radio transmission / reception circuit unit 14 in a time-division manner by a diversity switch 14f via a screw 13' also serving as a feeding point, and further via a coaxial cable 17. 14e 'is electrically connected.

The radio transmission / reception circuit section 14 has a transmission circuit section (TX) 14a for transmitting a radio signal and a reception circuit section (RX) 14b for receiving a radio signal. 'A band pass filter (BPF) 14 for transmitting and receiving only the frequency band of the radio signal to
d is a diversity switch 14f for the antenna elements 12, 12 ', a transmission circuit section 14a, and a reception circuit section 14b.
And between them. Here, the antenna element 12,
As described above, the diversity switch 14f to 12 'switches the main antenna element 12 and the sub-antenna element 12' constituting the diversity antenna temporally through the connection terminals 14e and 14e ', respectively. , A time-division switch for connecting the wireless transmission / reception circuit unit 14.

The radio signal to be transmitted and received is SS radio,
As in the case of PHS radio or BlueTooth radio, using a high frequency signal in a microwave band (that is, several GHz band) to perform time division multiplexing communication by the TDMA communication method, the transmission circuit unit 14a and The reception circuit unit 14b is temporally switched so that the antenna element 1
Changeover switch 14c for connecting to
It is interposed between the output terminal of the transmission circuit unit 14a, the input terminal of the reception circuit unit 14b, and the band pass filter (BPF) 14d.

With this connection configuration, a radio signal input / output to / from the radio transmission / reception circuit unit 14 is transmitted to the main antenna element 12 or the sub antenna element 12 'via the microstrip line 15 or the coaxial cable 17. However, as described above, the antenna elements 12 and 12 'are short-circuited by the metal screws 13 and 13' so that they can be electrically connected to the microstrip line 15 and the coaxial cable 17, respectively.

As described above, the sub-antenna element 12 '
1 from the main antenna element 12 or the wireless transmission / reception circuit unit 14
Since it is set at a position separated by more than / 2 wavelengths, an example is shown in which power is supplied via the coaxial cable 17 or the like, but the power supply means is not limited to this.
The power can be supplied by forming a microstrip line on the main printed circuit board on which the wireless transmission / reception circuit unit 14 is mounted. Of course, a good or flexible substrate that can be deformed is used. A simple power supply line may be used. In addition, a feed line other than the coaxial cable 17 and the main printed board, for example, the flexible board or the like may be wired inside the cabinet 10 of the liquid crystal television set 1 in terms of durability and aesthetic appearance. desirable.

Next, an example of a mounting structure in which the length of a handle portion having a built-in antenna element can be adjusted will be described with reference to FIG. 7 for a wireless transmission / reception device relating to a third technical means according to the present invention. Here, FIG. 7 is a structural diagram showing an example of a state of the handle portion when the handle portion containing the antenna element is stored and pulled out. That is, FIG.
FIG. 7A shows a case where the handle portion with the built-in antenna element is at a default position, that is, an intermediate position in the vertical direction.
(B) shows a case where the handle portion with the built-in antenna element is pulled out to the upper side as much as possible, and FIG. 7 (C) shows a case where the handle portion with the built-in antenna element is housed at the lower side as much as possible.

As described above, the handle 11 with the built-in antenna element is connected to the cabinet 1 such as a liquid crystal television.
The structure which is further pulled out from 0 is a structure in which the cylindrical antenna element built-in handle 11 is slidably attached to an annular slidable fastener 18 fixed to the cabinet 10 and slidable in the vertical direction. And a drawer-type antenna structure employed in a mobile phone device or the like may be used as it is. For example, FIG. 8 is a view showing an example of the structure of a slidable fastener for mounting an antenna element incorporated in a handle so as to be slidable in a vertical direction. 2 shows a state in which the antenna element 12 built in the handle part 11 is slidable while maintaining an electrical connection state with the conductive ring 18a constituting the slidable fastener 18.

As shown in FIG. 8, the antenna having a slidable structure is a pole-shaped (ie, cylindrical) antenna element 12.
And an annular slidable fastener 18 slidable in the vertical direction.
And a conductive ring 18a which forms an antenna element supporting portion, and maintains an electrically connected state with the antenna element 12 at all times. The microstrip line 15 provided on the substrate 20 is soldered to the microstrip line 15 by solder 19 so as to be electrically connected and to be slidably fastened.
Is mechanically fixed to the cabinet 10. The other end of the microstrip line 15 is connected to the wireless transmission / reception circuit unit 14, as shown in FIG. 3 or FIG.

With this mounting structure, the length of the handle portion 11 where the antenna element 12 is built can be adjusted to an arbitrary length, so that it can be adjusted according to the installation location of a wireless transmission / reception device such as a liquid crystal television device. , The length of the antenna element 12 is freely adjusted,
When the reception sensitivity is the highest, the transmission power is the maximum, and the dynamic range of the reach of the radio wave is maximized, it is possible to set the optimum radio wave transmission / reception state.

That is, since there is generally no universal antenna element, the transmission / reception state of a radio wave is affected by surrounding metal shields or human beings due to the characteristic of the antenna element. Unless the installation location is determined, the optimum radio wave transmission / reception state cannot be set. In the wireless transmission / reception device equipped with the antenna element according to the present invention, as shown in FIG.
The length of the handle part 11 can be adjusted to an appropriate position so that the antenna element 12 built in the handle part 11 can obtain the optimum antenna element characteristics. Even when the wireless transmission / reception device is installed, it is possible to set the wireless transmission / reception state optimal for the location.

Next, with reference to FIG. 9, another example of a mounting structure of a handle portion having a built-in antenna element will be described for a radio transmitting / receiving apparatus according to a fourth technical means of the present invention. Here, FIG. 9 is a structural view of another example showing a state of the handle portion when the handle portion containing the antenna element is stored and pulled out, and the handle portion 11 is turned around a cabinet 10 such as a liquid crystal television device. The case where it has a structure movably attached is shown. That is, a fastener for fixing the handle portion 11 on the cabinet 10 of the liquid crystal television device is a rotatable fastener 21 having a structure capable of rotating the handle portion 11 freely and stopping at an arbitrary position. The handle portion 11 is rotatably attached by 180 degrees from an upward state parallel to the rear surface of the cabinet 10 to a parallel state closely adhered to the downward surface through a vertical state separated from the rear surface. Have been.

That is, FIG. 9A shows that the handle portion 11 is positioned above the cabinet 10 of the liquid crystal television set.
And in a positional relationship parallel to the cabinet 10;
FIG. 9B shows the case where the handle 11 is in the default position (that is, the position in the vertical upward direction).
From the state of (A), in the clockwise direction of the hand on the paper,
FIG.
FIG. 9C shows a case where the camera is at a position where it has been rotated and stopped by 90 degrees in the clockwise direction on the paper from the state of FIG. 9A (that is, a position in the horizontal direction).

Here, the rotatable fastener 21 is fixed to the mounting portion of the handle portion 11 to the cabinet 10 of the liquid crystal television set, is built in the handle portion 11, and has a spherical tip. In order to rotatably fit the antenna element, for example, the antenna element is formed of an antenna element support having a spherical shape, and further, a stopper member capable of stopping the antenna element at an arbitrary rotation position is provided. It has a structure having. As an example, the structure of the rotatable fastener 21 is shown in FIG.

FIG. 10 is a view showing an example of the structure of a rotatable fastener for rotatably mounting the antenna element 12 incorporated in the handle part 11, and the rotatable fastener 21 is shown.
A metal antenna element supporting portion 21a having a spherical ring shape for rotatably fitting the antenna element 12 having a spherical tip to support the rotation operation of the antenna element 12; A cylindrical metal antenna element support base 22 for supporting the antenna element support portion 21a is provided. Further, the antenna element supporting portion 21a is provided with a stopper lever 23. After the antenna element 12 is turned to an arbitrary position, the stopper lever 23 is turned at the turning position.
, The antenna element 12 can be stopped and fixed.

The antenna element support 22 is provided on the microstrip line 1 provided on the printed circuit board 20.
The rotatable fastener 21 is electrically connected to the cabinet 5 by soldering or the like, and is mechanically fixed to the cabinet 10. The other end of the microstrip line 15 is connected to the wireless transmission / reception circuit unit 14, as shown in FIG. 3 or FIG.

With this mounting structure, the angle formed by the handle portion 11 having the antenna element 12 and the cabinet 10 of the liquid crystal television set can be arbitrarily adjusted, so that the wireless transmitting and receiving apparatus such as a liquid crystal television set can be installed. When the reception sensitivity of the antenna element 12 is the highest, the transmission power is the maximum, and the dynamic range of the reach of the radio wave is maximized depending on the location, the optimal radio wave transmission / reception state is set. It becomes possible.

That is, in general, there is no universal antenna, and the transmission / reception state of a radio wave is affected by a surrounding metal shield or a person due to the characteristic of the antenna element. Unless the installation location is determined, the optimum radio wave transmission / reception state cannot be set. In the wireless transmission / reception device equipped with an antenna element according to the present invention, as shown in FIG. 9, the angle of the antenna element 12 built in the handle 11 is adjusted so that optimal antenna element characteristics can be obtained.
Can be adjusted to the appropriate position,
Even when the wireless transmitting / receiving device is installed at any place, it is possible to set the wireless wave transmitting / receiving state optimal for the place.

Next, an example of a structure for accommodating a handle portion with a built-in antenna element will be described with reference to FIG. 11 for a wireless transmission / reception device according to a fifth technical means of the present invention. FIG. 11 is a structural diagram showing a state of the handle when the handle containing the antenna element is stored. FIG. 11A shows the antenna element 12, that is, the handle 1.
1 shows a state in which the antenna element 1 is pulled out to the upper rear part of the cabinet 10 of the liquid crystal television apparatus, that is, a state of a default position, and FIG. The state where it was stored in the back of cabinet 10 is shown.

That is, FIG. 11 shows an example of a method for storing the antenna element 12, that is, the handle portion 11. When the radio wave signal is not used at all, for example,
Even at the time of PHS wireless telephone communication or SS wireless communication, the transmission / reception distance of the radio wave is sufficiently short, at most about 1 to 2 m,
Even in a state where the wireless transmitting and receiving apparatus does not make full use of the antenna gain, in a case where the wireless wave transmitting and receiving sensitivity can be sufficiently ensured, as shown in FIG.
It has a structure in which the antenna element 12 can be stored on the back of the cabinet 10 of the liquid crystal television device.

That is, a recess 24 for storing a handle portion capable of storing the handle portion 11 is provided directly below the mounting portion of the handle portion 11 having the antenna element 12 therein, on the rear surface of the cabinet 10 of the liquid crystal television apparatus. I have. Thus, in a situation where the use of the antenna element 12 is unnecessary, the handle section 11 with the built-in antenna element 12 is housed in the handle housing recess 24 provided on the back surface of the cabinet 10 of the liquid crystal television. The liquid crystal television device cabinet 1 is brought into close contact with the rear surface of the liquid crystal television device cabinet 10 so that
It is possible to set a state in which no protrusions protrude from zero.

When the use of the antenna element 12 is unnecessary by providing the handle housing recess 24 on the back surface of the cabinet 10 of the liquid crystal television device, the projection of the antenna element 12 can be used. Can be prevented from protruding from the cabinet 10 body of the liquid crystal television device, so that careless application of external force to the antenna element 12 can prevent accidental damage to the antenna element, and can prevent the antenna element 12 from being damaged. The whole structure can maintain a neat shape aesthetically.

Next, a radio transmitting / receiving apparatus according to a seventh technical means of the present invention will be described. The wireless transmission / reception device according to the present technical means shows still another example regarding the material of the antenna element used in each of the embodiments described above. That is, in each of the embodiments described above,
Although the case where a metal pole-type antenna is used as the material of the antenna element has been described, the antenna element is not limited to this, and the micro-element printed on a flexible substrate that can be flexibly deformed is used. A strip line may be used.

When a microstrip line printed on such a flexible substrate is used, the shape of the antenna element can be flexibly deformed. For example, when the antenna element, ie, the handle, is stored in the back of the cabinet 10 of the liquid crystal television set when the antenna is not used, the antenna element, ie, the handle, is compared with the case of the metal pole type antenna. Can be freely deformed, and the antenna element, that is, the handle portion, can be stored more smoothly.

In addition, a microstrip line for an antenna is printed on a hard substrate forming the main printed circuit board 20 on which the radio transmission / reception circuit unit 14 is mounted, and the microstrip line is used as an antenna element. If this is the case, the additional cost associated with separately manufacturing the antenna element can be reduced.

Further, as the radio transmitting / receiving apparatus according to the eighth technical means, in the above-described embodiment, the handle 11 is
Although the structure in which only the antenna element 12 is incorporated has been described, not only the antenna element 12 but also the wireless transmission / reception circuit unit 14 may be incorporated in the handle unit 12 at the same time. In such a case, the shape of the printed circuit board on which the wireless transmission / reception circuit unit 14 is mounted needs to be of an elongated shape so that it can be built into the handle unit 11 as a matter of course.

As described above, if the antenna element 12 and the radio transmission / reception circuit section 14 are both built in the handle section 11, the microstrip is required to connect the antenna element 12 and the radio transmission / reception circuit section 14. Line 15
It is possible to feed power directly from the wireless transmission / reception circuit unit 14 to the antenna element 12 without passing through the coaxial cable 17 and reduce the propagation loss of the high-frequency signal.

In each of the above-described embodiments, a liquid crystal television device has been described as an example of a wireless transmission / reception device equipped with an antenna element. However, the present invention is not limited to this, and may be a CRT television device or a videophone, and may be IEEE 802.11 or IEEE 8
Applicable to SS wireless system compliant with 02.11B, next-generation mobile phone, wireless transmitter / receiver using PHS wireless system or wireless system compliant with Bluetooth technology, wireless transmitter alone, or wireless receiver alone Is possible.

[0067]

By using the wireless transmission / reception device according to the present invention as described above, the following effects can be obtained.

(Effects on First and Sixth Technical Means) Since the antenna element is built in the handle, which is indispensable especially for the thin portable radio transmission / reception apparatus, the radio transmission / reception apparatus can be used even when the antenna element is provided. There is no need to add a special space to the device, and no extra protrusions are produced, so that a clean structure can be achieved. Also, in general, when a resin part is adopted as the handle part, since the inside of the handle part is often hollow,
There is no need to apply special resin molding to secure the space for incorporating the antenna element again, and it is possible to use the existing resin molding process as it is,
An increase in manufacturing cost can be suppressed.

(Effects on the Second and Sixth Technical Means) In the handle of the portable wireless transmission / reception device, two antenna elements are built in each of two parts having a parallel positional relationship with each other. In addition, it is possible to cope with the antenna diversity effect, and it is not necessary to add a special space to the wireless transmitting and receiving apparatus to achieve the effect.

(Effects on Third and Fourth Technical Means) It is possible to adjust the length and angle of the handle portion having the built-in antenna element to an arbitrary length and an arbitrary angle. Accordingly, optimal antenna characteristics can be obtained when the reception sensitivity of the antenna element is the highest, the transmission power is the maximum, and the dynamic range of the reach of the radio wave is the maximum. In other words, in order to ensure the performance of the antenna element, the installation location of the wireless transmission / reception device such as a liquid crystal television device is not restricted, and the antenna can be installed anywhere as desired. Location selectability can be provided to the user.

(Effects on Fifth Technical Means) When the use of an antenna element is unnecessary, the handle portion containing the antenna element can be housed in a recess provided on the back of the radio transceiver cabinet. Thus, the projection of the antenna element does not protrude from the wireless transmission / reception device, there is no possibility of being damaged by inadvertent external force applied to the antenna element, and the antenna element can have a neat shape.

(Effects of the Seventh Technical Means) Since a flexible antenna whose shape can be flexibly deformed is used instead of the metal pole type antenna element, the handle containing the antenna element is housed. At this time, the shape of the antenna element, that is, the handle portion is freely deformed, so that the handle portion can be more smoothly stored in the concave portion on the back surface of the wireless transmission / reception device cabinet. Also, by printing a microstrip line on a hard substrate forming a main printed circuit board on which a wireless transmission / reception circuit unit is mounted and using the microstrip line as an antenna element, it is necessary to separately manufacture an antenna element. Additional costs can be reduced.

(Effects on the Eighth Technical Means) By housing the antenna element and the radio transmission / reception circuit together in the handle, it is possible to transmit / receive radio signals to / from the antenna element without using a microstrip line or a coaxial cable. Power can be directly supplied from the circuit unit to the antenna element, and the propagation loss of a high-frequency signal can be reduced.

[Brief description of the drawings]

FIG. 1 is a structural diagram illustrating an embodiment of a wireless transmission / reception device according to the present invention.

FIG. 2 is a schematic diagram showing an example in which the handle portion 11 is attached to the back of the cabinet 10 of the liquid crystal television device so as to be rotatable 180 degrees from upward to downward.

FIG. 3 is a connection configuration diagram illustrating an example of connection between an antenna element and a wireless transmission / reception circuit unit.

FIG. 4 is a cross-sectional view showing a structure of a mounting portion of the antenna element.

FIG. 5 is a structural diagram showing an example of another embodiment of the wireless transmission / reception device according to the present invention.

FIG. 6 is a connection configuration diagram showing another example of the connection between the antenna element and the wireless transmission / reception circuit unit.

FIG. 7 is a structural diagram showing an example of a state of the handle when the handle incorporating the antenna element is stored and pulled out.

FIG. 8 is a view showing an example of a structure of a slidable fastener for mounting an antenna element incorporated in a handle so as to be slidable in a vertical direction.

FIG. 9 is a structural view of another example showing a state of the handle portion when the handle portion containing the antenna element is stored and pulled out.

FIG. 10 is a view showing an example of a structure of a rotatable fastener for rotatably mounting an antenna element incorporated in a handle.

FIG. 11 is a structural diagram showing a state of the handle when the handle containing the antenna element is stored.

FIG. 12 is a perspective view showing an example of a portable television device provided with a conventional indoor antenna.

FIG. 13 is a schematic diagram illustrating a state in which a conventional indoor device is not equipped with an indoor antenna and is wired from an outdoor antenna via a coaxial cable.

FIG. 14 is a perspective view for explaining a “handle” provided in a conventional small and portable portable television device or monitor device.

FIG. 15 is a schematic view showing an example in which an antenna is not required in a conventional video signal transceiver using infrared light.

FIG. 16 is a schematic diagram for explaining an example of additional installation of an antenna to a transceiver for transmitting a video signal using infrared light in the related art when the SS wireless system and the PHS wireless system are used together.

[Explanation of symbols]

1. Liquid crystal television device, 1a: Television device,
10. Cabinet of liquid crystal television set, 11, 1
1a: Handle, 12, 12 ': Antenna element, 12a
... indoor antenna element, 12b ... outdoor antenna element, 12
c: antenna element, 13, 13 'screw, 14: radio transmitting / receiving circuit section, 14a: transmitting circuit section (TX), 14b: receiving circuit section (RX), 14c: changeover switch, 14d: band-pass filter (BPF) .., 14e, 14e ′ connection terminal, 14f diversity switch, 15 microstrip line, 16 rotating member, 17 coaxial cable, 17a coaxial cable, 18 slidable fastener,
18a: conductive ring (antenna element support), 19: solder, 20: printed circuit board, 21: rotatable fastener, 21
a: antenna element support, 22: antenna element support,
23: Stopper lever, 24: Handle recess.

Claims (8)

[Claims] 1. A portable portable radio transmitting / receiving apparatus, wherein an antenna element capable of transmitting / receiving a desired microwave band radio signal is built in a handle portion provided for carrying, and said antenna element is provided. A power supply to the antenna element via a microstrip line electrically connected to the wireless transmission / reception device. 2. The wireless transmission / reception device according to claim 1, wherein the antenna elements are respectively incorporated in two portions of the handle portion having a parallel positional relationship to constitute a diversity antenna. A wireless transmission / reception device. 3. The slidable fastener according to claim 1, further comprising an antenna element supporting portion that allows the antenna element built in the handle to be slidable in a vertical direction. Is provided in a mounting portion of the handle, whereby the length of the handle with the built-in antenna element can be freely adjusted in a vertical direction. 4. The wireless transmission / reception device according to claim 1, wherein the bottom of the antenna element incorporated in the handle has a spherical shape, and is fitted to an antenna element support having a spherical shape. By aligning, and by providing a stopper member that allows the antenna element to be stopped at an arbitrary angle position, the angle formed by the handle unit with the built-in antenna element and the wireless transmission / reception device body to an arbitrary position. A wireless transmission / reception device capable of rotating and stopping rotation. 5. The wireless transmission / reception device according to claim 1, wherein a recess is provided on a rear surface of the cabinet of the wireless transmission / reception device so that the handle portion can be stored. Transceiver. 6. The radio transmission / reception device according to claim 1, wherein said antenna element comprises a metal monopole antenna or a dipole antenna. 7. The wireless transmission / reception device according to claim 1, wherein the antenna element comprises a microstrip line printed on a hard substrate or a deformable flexible substrate. Wireless transmitting and receiving apparatus. 8. The wireless transmission / reception device according to claim 1, wherein both the antenna element and a wireless transmission / reception circuit unit that supplies power to the antenna element are built in the handle. A wireless transmitting / receiving device characterized by the above-mentioned.