JP3221346B2 - External antenna device for mobile phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an external antenna device for a portable telephone used, for example, in a vehicle.

[0002]

In recent years, portable telephones have become widespread, and are used, for example, in the interior and interior of automobiles. By the way, when a mobile phone is used in a vehicle or indoors, the radio wave environment generally tends to be worse than in the outdoors. A method of connecting to an external telephone antenna has been adopted. Hereinafter, a case where the mobile phone is connected to an external antenna for a mobile phone mounted on a vehicle will be described.

There are two types of external antennas for in-vehicle portable telephones: a type mounted outside the vehicle and a type mounted inside the vehicle. However, the type that is installed outside the vehicle is not widely used because of problems such as appearance, wind noise during running, theft and installation, etc. Widely used.

A typical example of such an external antenna for a portable telephone set in a vehicle compartment is a rear tray-mounted type as shown in FIG. The rear tray-mounted external antenna 1 is mounted on the rear tray 3 behind the rear seat 2, and can be installed in a place where a radio wave environment is relatively good because there are few obstacles (metal bodies such as a body) around the antenna. There is an advantage.

[0005] Incidentally, such a rear tray-mounted external antenna 1 has a trunk structure in view of ensuring safe driving of the driver (securing the rear view) and safety of the occupant (prevention of blind spots due to protrusions). It is necessary to have a flat shape with a low height instead of a rod shape to be installed on the lid.
On the other hand, it is necessary to ensure electrical performance,
Since the height is low, the width and the depth must be increased. As a result, the rear tray-mounted external antenna 1 requires a large installation area. For this reason, the rear tray-mounted external antenna 1 can be installed only on the rear tray 3 having a large area, that is, the installation location is limited to the rear tray 3.

On the other hand, the above-mentioned rear tray-mounted external antenna 1 cannot be applied to an automobile having no rear tray 3, such as a leisure vehicle or a commercial vehicle. In order to solve this problem, a window-attached external antenna 4 as shown in FIG. 17 is provided. This window-mounted external antenna 4
In general, rear seats are generally used in the passenger compartment, because they have the best radio wave environment next to the rear tray 3, there is a space for installation, and it is necessary to ensure the driver's safe driving (ensure the rear view). Attached by suction cups 7 and 8 to a window 6 on the side of 5. In this case, the window 6 to which the window-attached external antenna 4 is attached is preferably a fixed window (a window that does not open and close).

The window-attached external antenna 4
Has a rod-like shape from the viewpoint of securing a view of the rear side of the driver. In this case, the height needs to be increased in order to secure electrical performance. For this reason, the above-mentioned window-attached external antenna 4 has a space in the height direction, and can be mounted only on a window that can ensure safety (prevention of blind spots). The fact is that it is limited to windows.

As described above, these rear tray-mounted external antennas 1 and window-attached external antennas 4 are limited in their installation sites, and therefore, for example, a user who has used the rear tray-mounted external antenna 1 can be used by a leisure vehicle or the like. When the vehicle is replaced with a car having no rear tray, the rear tray-mounted external antenna 1 cannot be used, and the window-mounted external antenna 4 must be newly purchased. Of course, even in the opposite case, there was a similar problem. Further, manufacturers and dealers that manufacture and sell external antennas for mobile phones manufacture and stock two types of external antennas for mobile phones, the rear tray-mounted external antenna 1 and the window-mounted external antenna 4, for the reasons described above. And there is a problem that manufacturing and inventory management are troublesome.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an external device for a portable telephone that can be installed regardless of the state of an installation site, thereby improving usability. An object of the present invention is to provide an antenna device.

[0010]

According to the first aspect of the present invention, an external antenna for a mobile phone is mounted on a table, and the mounting portion of the table is mounted on a horizontal surface, thereby providing a portable telephone. An external antenna can be installed even without a vertical plane. In addition, the mobile phone external antenna is detached from the stand, and the mounting portion of the mobile phone external antenna is mounted on the vertical surface, so that the mobile phone external antenna is installed even when there is no horizontal surface. Can be. Therefore, the external antenna device for a mobile phone can be installed irrespective of the state of the installation site, and the usability can be improved.

[0011] Further, since the external antenna for a portable telephone can be attached to and detached from the table by a mounting portion, it is possible to use the table when necessary (when installing the external antenna for a cellular telephone on a horizontal surface). Such as good, the usability can be further improved.

According to the second aspect of the present invention, by mounting the mounting portion of the base portion on the horizontal surface portion, the external antenna device for a portable telephone can be installed even if there is no vertical surface portion. it can. Further, by attaching the mounting portion of the base portion to the vertical surface portion, the external antenna device for a mobile phone can be installed even when there is no horizontal surface portion. Therefore, the external antenna device for a mobile phone can be installed irrespective of the state of the installation site, and the usability can be improved.

In this case, since the base portion is provided integrally with the case, it is possible to reduce the number of parts and the material as compared with the first embodiment in which a stand separate from the case is provided. And cost reduction can be achieved.

According to the third aspect of the present invention, it is possible to perform good impedance matching and, for example, when installing the apparatus on a rear tray in a vehicle compartment, the apparatus can be installed in accordance with the inclination of the rear window.

According to the fourth aspect of the present invention, since the radio signal transmitted from the base station is diversity-received, the reception sensitivity can be improved.

According to the fifth aspect of the present invention, the mounting portion is mounted on a window, a seat side, a pillar, or the like in the interior of the vehicle, and the mounting portion is mounted on the rear tray in the interior of the vehicle, so that the external device for the mobile phone is provided. The antenna device can be installed in the vehicle interior according to the situation. Thus, the user only needs to have one mobile phone external antenna device, and the maker or the retailer manufactures one kind of mobile phone external antenna device, and if the user has one in stock. In addition, superiority in manufacturing and inventory management can be achieved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the external antenna device for a portable telephone according to the present invention is used in a vehicle cabin will be described below with reference to FIGS. First, FIG. 3 shows an external view of the mobile phone external antenna 11. The case 12 of the mobile phone external antenna 11 is formed by combining case members 13 and 14 made of a resin having elasticity, respectively, and is formed in a substantially “C” shape. Further, the case members 13 and 1
Case 1 as an attachment part constituted by the outer surface part 4
Each of the side surfaces 12a and 12b of the second 2 is formed in a substantially flat shape (see FIG. 2).

Inside the case 12, rod-shaped conductive antenna wires 15 and 16 as conductive members are provided with a predetermined angle α (α = for example, 13) for impedance matching.
5 °). These antenna wires 1
5 and 16 are connected to an inner conductor 17a and an outer conductor 17b of a coaxial cable 17 fixed to the case 12, respectively, and the distal end of the coaxial cable 17 is connected to a connector 18 (a coaxial connector or a 16-core connector, 1 (see FIG. 1) and a mobile phone via an in-vehicle adapter (not shown).

FIG. 4 shows an external view of the table 19. The main body 20 of the table 19 is made of a resin having elasticity similar to the case 12 of the external antenna 11 for a mobile phone, and the rising wall 20 extending along the longitudinal direction at the lower portion on both sides.
a and 20b are formed. Also,
A groove 21 is formed in the main body 20 along the longitudinal direction as a mounting portion that is located between the rising walls 20a and 20b and is wider than the thickness of the case 12 of the external antenna 11 for a mobile phone.

Protrusions 22 and 23 are formed at predetermined positions on both inner surfaces of the groove 21 so as to face each other.
Is slightly smaller than the thickness of the case 12 of the mobile phone external antenna 11.
Further, a bottom surface portion 20c as a mounting portion of the main body 20 is formed in a flat shape (see FIGS. 1 and 2).

Thus, as shown in FIGS. 1 and 2,
A part of the mobile phone external antenna 11 is inserted into the groove 21 of the table 19, and each of the distal ends 22a and 23a is inserted.
Are in contact with both side surfaces 12a and 12b of the case 12, respectively.
Is supported from both sides, the mobile phone external antenna 11 can be detachably mounted on the table 19, and the mobile phone external antenna device 24 can be configured (in FIG. 1, the mobile phone external antenna 11 shows the case member 13, the rising wall 20 a of the placing stand 19, and the projection 22 side).

Next, the case where the external antenna device 24 for a cellular phone thus configured is mounted on a vehicle having a rear tray and the case where the external antenna device 24 is mounted on a vehicle such as a leisure vehicle or a commercial vehicle which does not have a rear tray will be described. Think. First, a case where the mobile phone external antenna device 24 is mounted on an automobile having a rear tray will be described with reference to FIGS.

First, the user adjusts the above-mentioned external antenna 11 for a portable telephone to the inclination angle of the rear window 25 as shown in FIG. Stand 1
9 to form a mobile phone external antenna device 24. Then, the user places the bottom surface portion 20c of the main body 20 of the table 19 with a double-sided tape 26, for example, a rear tray 28 behind the rear seat 27 in the vehicle cabin (horizontal plane portion in the present invention).
The external antenna device 24 for the mobile phone is attached to the upper surface portion 28a of the rear tray 28 by adhesive bonding.
8a (see FIG. 5). Coaxial cable 1
7 is buried under the rear seat 27.

At this time, the user connects the mobile phone external antenna device 29 having the same configuration as the mobile phone external antenna device 24 to the mobile phone external antenna device 2.
4 and is fixed on the upper surface 28a of the rear tray 28 with a predetermined distance. Then, the user operates the external antenna device for mobile phone 24 and 29 by operating the external antenna device for mobile phone 24 as a transmitting / receiving antenna and the external antenna device for mobile phone 29 as a reception-only antenna. The mobile phone electrically connected via the in-vehicle adapter is configured to be able to diversity receive the radio signal transmitted from the base station.

Next, the portable telephone external antenna device 24
Is mounted on an automobile without a rear tray, with reference to FIGS. 7 and 8. FIG. The user detaches the mobile phone external antenna 11 from the cradle 19 if the mobile phone external antenna 11 is mounted on the cradle 19. Then, the user attaches one side surface of the external antenna 11 for a mobile phone, for example, the side surface 12b to FIG.
As shown in FIG. 2, the external antenna 1 for a mobile phone is fixed by bonding to a window 31 (a vertical surface portion in the present invention) on the side of the rear seat 27 of the vehicle interior with a double-sided tape 30, for example.
1 is fixed to the window 31 (see FIG. 7).

At this time, although not shown, the user does
The mobile phone external antenna 11 of another mobile phone external antenna device 24 is attached and fixed to, for example, a window (not shown) opposite to the window 31, and the mobile phone external antenna 1
By operating the antenna 1 as a transmission / reception antenna and the other mobile phone external antenna 11 as a reception-only antenna, the radio signal transmitted from the base station can be diversity-received.

As described above, in the first embodiment, the mobile phone external antenna device 24 is provided with the mobile phone external antenna 11 having the side surfaces 12a and 12b attachable to the vertical surface such as the window 31, and the like. An external antenna 11 for a mobile phone is detachable, and the table 19 is provided with a bottom surface portion 20c that can be attached to a horizontal surface such as the rear tray 28.

Therefore, when the mobile phone external antenna device 24 is installed in the interior of the automobile where the rear tray 28 is located, the mobile phone external antenna 11 is mounted on the pedestal 19, and the bottom portion 20c of the pedestal 19 is mounted on the pedestal 19. It can be installed by placing it on the upper surface 28a of the rear tray 28. When the antenna is installed in the interior of an automobile without the rear tray 28, the mobile phone external antenna 11 can be attached to and detached from the pedestal 19, and the side surface 12a or 12b can be attached to the window 31 for installation. Thus, the mobile phone external antenna 24
Can be installed irrespective of the state of the installation site, and usability can be improved.

At this time, since the mobile phone external antenna 11 can be attached to and detached from the table 19 by the groove 21 and the projections 22 and 23, the external antenna 11 for the mobile phone can be connected to the rear tray 28 when necessary. (E.g., when it is installed in the interior of a certain automobile), it is only necessary to use the table 19, so that the usability can be further improved.

Further, an external antenna device 2 for a mobile phone
Since the mobile phone external antenna device 29 having the same configuration as that of FIG. 4 is installed and the radio signal transmitted from the base station is diversity-received by the mobile phone external antenna devices 24 and 29, the mobile phone external antenna device 29 is provided. The reception sensitivity of the mobile phone connected to the antenna devices 24 and 29 can be improved. In addition, the manufacturer or the shop only needs to manufacture and stock one type of the external antenna device 24 for the mobile phone, and it is possible to achieve superiority in manufacturing and inventory management.

In FIG. 9, the external antenna 11 for a portable telephone is shown.
Is mounted and fixed to the side portion 32a (vertical surface portion in the present invention) of the driver's seat 32 instead of the window 31. In this case, even in this case, another external antenna device 2 for a mobile phone is required.
The mobile phone external antenna 4 is mounted and fixed at a predetermined position in the vehicle compartment, and is configured to be able to receive diversity with them.

In FIG. 10, an external antenna 1 for a portable telephone is shown.
1 is attached and fixed to a pillar 33 (a vertical surface portion in the present invention) instead of the window 31. Even in this case, the mobile phone external antenna 11 of another mobile phone external antenna device 24 is attached and fixed to a predetermined portion in the vehicle interior, so that diversity reception can be performed.

Therefore, according to the first embodiment, even if the external antenna devices 24 and 29 for a mobile phone cannot be placed on the rear tray 28 as shown in FIG. External antenna devices 24 and 2
9, FIG. 9 and FIG.
0 can be installed in combination, and the usability can be further improved.

Next, a second embodiment of the present invention will be described with reference to FIG.
This will be described with reference to FIGS. The same portions as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. Hereinafter, different portions will be described. Thick portions 41 and 42 are formed at one end sides of the case members 13 and 14 of the external antenna 11 for a mobile phone, respectively. The thick base portions 43 and 42 are formed integrally with the case 12 by the thick portions 41 and 42. Are formed.

In the base portion 43, the thick portions 41 and 42
Side portions 4 as mounting portions constituted by outer surface portions of
3a and 43b are formed substantially flat (FIG. 1)
2). Also, a bottom portion 4 as a mounting portion of the base portion 43
3c is formed in a substantially flat shape (FIGS. 11 and 12).
reference). Thus, the mobile phone external antenna device 44 is configured.

Now, also in the second embodiment, a case where the external antenna device 44 for a portable telephone is mounted on a vehicle having a rear tray and a case where the external antenna device 44 is mounted on a vehicle having no rear tray will be considered. First, a case where the external antenna device 44 for a mobile phone is mounted on an automobile having a rear tray will be described with reference to FIG.

The user attaches and fixes the bottom surface 43c of the base 43 to the upper surface 28a of the rear tray 28 with, for example, a double-sided tape in the external antenna device 44 for a mobile phone. On the upper surface 28a of the rear tray 28 (see FIG. 13).
reference).

At this time, as in the first embodiment, the user operates the external antenna device 44 for the portable telephone.
The mobile phone external antenna device 45 having the same configuration as that described above is placed and fixed on the upper surface 28a of the rear tray 28 at a predetermined distance from the mobile phone external antenna device 44. , And the mobile phone external antenna device 45 functions as a reception-only antenna, thereby enabling diversity reception of radio signals transmitted from the base station.

Next, a case where the external antenna 11 for a portable telephone is mounted on an automobile having no rear tray is shown in FIG.
This will be described with reference to FIG. As shown in FIG. 15, the user attaches, for example, a side surface 43 b, which is one side surface of the base unit 43, to the rear seat 27 of the vehicle interior with a double-sided tape 46 in the external antenna device 44 for a mobile phone.
The external antenna device 44 for a mobile phone is attached and fixed to the window 31 by adhesively fixing it to the side window 31 (see FIG. 14).

At this time, the user attaches and fixes another mobile phone external antenna device 44 to, for example, a window (not shown) on the opposite side of the window 31 (not shown). The device 44 functions as a transmitting / receiving antenna device, and the other mobile phone external antenna device 4
By operating the antenna 4 as a reception-only antenna device, a radio signal can be diversity-received.

As described above, in the second embodiment, the side surface portion 43a which can be attached to the vertical surface portion such as the window 31 is provided on the base 43 provided integrally with the case 12 in the external antenna device 44 for a portable telephone. And 43b, and a bottom surface 43c attachable to a horizontal surface such as the rear tray 28.
Was provided.

Therefore, when the external antenna device 44 for a portable telephone is installed in the interior of an automobile where the rear tray 28 is located, the bottom portion 43c of the base 43 is mounted on the upper surface 28a of the rear tray 28. be able to. In addition, when the vehicle is installed in the interior of an automobile without the rear tray 28, the vehicle can be installed by attaching the side surface 43 a or 43 b of the base 43 to the window 31. Thus, the mobile phone external antenna device 44 can be installed irrespective of the state of the installation site, and the same effect as in the first embodiment can be obtained.

In the second embodiment, since the base 43 corresponding to the table 19 of the first embodiment is formed integrally with the case 12, the number of parts and the material can be reduced accordingly. And cost can be reduced.
In addition, when the table 19 is not used, the table 19 is used.
There is no need to worry about the storage location.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. The mobile phone external antenna devices 24, 29, 44 and 45 can be used not only in the vehicle compartment but also outside the vehicle. That is, for example, when indoors, the table 19 may be placed on a desk or the like, or the external antenna 11 for a mobile phone may be mounted on a wall or the like, and the external antenna devices 44 and 45 for the mobile phone may be mounted on a desk or the like. It may be mounted or mounted on a wall or the like.

In place of the antenna wires 15 and 16, a conductive pipe may be used. The case 12 may be made of an elastic material such as rubber instead of resin,
You may comprise by molding. The protrusions 22 and 23 provided on the table 19 may be provided on the case 12. The connector 18 may be directly connected to the mobile phone.

When it is not necessary to receive diversity, one external antenna device for mobile phone 24, 29,
44 or 45 may be used. The horizontal plane part and the vertical plane part in the present invention are in the category even if they have a slight inclination or curvature.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

FIG. 2 is a front view

FIG. 3 is a perspective view of an external antenna for a mobile phone.

FIG. 4 is a perspective view of a table.

FIG. 5 is a diagram showing a state in which an external antenna device for a mobile phone is placed and fixed on a rear tray.

FIG. 6 is a side view of a portion where the external antenna device for a mobile phone is placed and fixed on a rear tray.

FIG. 7 is a diagram showing a state in which an external antenna for a mobile phone is attached and fixed to a window.

FIG. 8 is a front view of a portion where an external antenna for a mobile phone is attached and fixed to a window.

FIG. 9 is a diagram showing a state in which an external antenna for a mobile phone is attached and fixed to a side portion of a driver's seat.

FIG. 10 is a diagram showing a state in which an external antenna for a mobile phone is attached and fixed to a pillar.

FIG. 11 is a view corresponding to FIG. 1, showing a second embodiment of the present invention.

FIG. 12 is a diagram corresponding to FIG. 2;

FIG. 13 is a diagram corresponding to FIG. 5;

FIG. 14 is a diagram corresponding to FIG. 7;

FIG. 15 is a diagram corresponding to FIG. 8;

FIG. 16 is a diagram corresponding to FIG. 5 showing a conventional example.

FIG. 17 is a diagram corresponding to FIG. 7;

[Explanation of symbols]

In the drawing, 11 is an external antenna for a mobile phone, 12 is a case, 12a and 12b are side portions (mounting portions), 15 and 16 are antenna wires (conductive members), 19 is a mounting table, and 20c is a bottom portion (mounting portion). , 21 is a groove (mounting portion), 24 is an external antenna device for a mobile phone, 28 is a rear tray (horizontal surface portion), 29 is an external antenna device for a mobile phone, 31 is a window (vertical surface portion), 32 is a driver's seat (seat). ), 32a are side portions (vertical surface portions), 33 is pillars (vertical surface portions), 43 is a base, 43a and 43b are side portions (mounting portions) 43c are bottom portions (mounting portions), and 44 and 45 are mobile phones. External antenna device.

Continuation of the front page (56) References JP-A-7-273520 (JP, A) JP-A-8-37411 (JP, A) JP-A-10-56412 (JP, A) JP-A-10-136430 (JP, A) JP-A-2000-40907 (JP, A) JP-A-10-247805 (JP, A) JP-A-5-243830 (JP, A) JP-A-9-51217 (JP, A) −46106 (JP, U) Actually open 58-101510 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01Q 1/12-1/22 H04B 1/00 H04M 1/02

Claims (5)

(57) [Claims] 1. A conductive member which is electrically connected to a mobile phone, and a mounting part which includes the conductive member and which is formed along the conductive member and which is mounted on a vertical surface. An external antenna for a mobile phone, comprising: a case provided with: a mounting portion to which the external antenna for the mobile phone is detachably mounted, and a mounting portion to be mounted on a horizontal surface portion; An external antenna device for a mobile phone, comprising a base. 2. A case that includes two conductive members each electrically connected to a mobile phone, a case that incorporates these conductive members, and that is configured along the conductive member. And a base portion provided with a mounting portion for mounting on a vertical surface portion on a side portion and a mounting portion for mounting on a horizontal surface portion on a bottom portion. An external antenna device for a mobile phone. 3. The external antenna device for a mobile phone according to claim 1, wherein the two conductive members are arranged at a predetermined angle. 4. An external antenna device for a mobile phone according to claim 1, wherein at least two external antenna devices are provided for diversity reception of a radio signal transmitted from a base station. 5. The vehicle, wherein the mounting portion is mounted on a window, a seat side, a pillar, or the like in the vehicle interior, and the mounting portion is mounted on a rear tray in the vehicle interior, thereby being installed in the vehicle interior. The external antenna device for a mobile phone according to any one of claims 1 to 4, wherein: