JPH09247006A - Wrist portable receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a wrist portable receiver with a valid antenna shape within a limited size by arranging integrally an antenna made of a conductor material to a case and incorporating a reception circuit in the case. SOLUTION: An antenna input section pattern 33 of a board 27 has a feeding port 15 from which an antenna current is supplied and a side face opening 13 to which a pushbutton 35 for operating the receiver is inserted, the receiver has an antenna 11 made of a conductor material looped horizontally to an arm, a case 17 having a pushbutton hole 23 to which the pushbutton 35 is inserted, and using the antenna 11 as a core material on which a resin being a nonconductive material is coated, a reception circuit 29 and a liquid crystal display device 25 or the like are mounted. Through such a constitution, a radio wave received by the antenna 11 is given to the antenna input section pattern 33 of the board 27 via the feeding hole 15 and demodulated by a reception circuit 29 mounted on the board 27, sent to the liquid crystal display device 25 via a transmission line 31, on which a reception message and accurate corrected time are displayed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a portable arm type receiver, and more particularly to a portable arm type receiver characterized by an antenna configuration.

[0002]

2. Description of the Related Art Conventionally, there have been techniques for transmitting and receiving radio waves to perform various functions. However, the conventional transmitter / receiver is only a large-sized device, and although there is a portable type, it is only a relatively large-sized device in terms of electric power. However, in recent years, due to the development of technology, it has become possible to reduce the size of transmitters / receivers and reduce the power consumption, and it has become possible to carry the transmitter / receiver on the wrist. The presence of an antenna is indispensable for such a transmission / reception device, but in the case of a wrist-worn device, the problem of the space is greatly highlighted.

Various arrangements of the above-mentioned antenna have been proposed in the past. As a typical example thereof, the structure is such that the antenna is provided inside the housing or the band of the electronic device. There is. Japanese Patent Laid-Open No. 5-
Japanese Patent No. 3446 is a conventional example disclosing a structure in which an antenna is provided in a band of an electronic device.

According to Japanese Patent Laid-Open No. 5-3446, a typical wristwatch as an electronic device is illustrated. However, an antenna plate having an insulating layer made of synthetic resin on its surface is built in a metal band, and the antenna plate is A loop antenna is configured through the clasp of the band, and the antenna plate further has a terminal at its end for conducting with the antenna terminal on the wristwatch type radio device side.

[0005]

However, in the case of the structure in which the antenna is provided inside the housing, the antenna must be smaller than the housing, and for an antenna in which the superiority or inferiority of performance is determined by the opening area. In the limited size of the wristwatch, we could not satisfy the request to improve the reception performance as much as possible, and in addition, we cannot use it because the general metal case of the wristwatch causes the deterioration of the internal antenna performance. There are challenges.

On the other hand, in a structure in which an antenna is provided in a band of an electronic device as disclosed in Japanese Patent Laid-Open No. 5-3446, since the inside of the band is made of the metal of the antenna,
Poor plasticity of the band makes it uncomfortable to wear, especially since the antenna and case require electrical conduction, the case and band are fixed, and the antenna is blocked when not worn on the arm, resulting in poor reception performance. There are issues such as doing.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above problems and to provide a portable arm type receiver having an effective antenna shape within a limited size.

[0008]

In order to achieve the above object, an arm portable receiver of the present invention has a case having a built-in receiving mechanism and a band for carrying the case, and the case is provided in the case. An antenna made of a conductive material is integrally provided, and a receiving circuit is built in the case.

Further, the portable arm type receiver of the present invention is characterized in that the whole case forms an antenna made of a conductive material, and a hook for locking a band is formed on the case or the antenna.

Further, the arm-portable receiver of the present invention is characterized in that the antenna is covered with a non-conductive material (eg, glass material, plastic material, ceramics, etc.).

Further, in the portable arm type receiver of the present invention, when the antenna is worn on the arm, the antenna is a loop antenna that loops vertically or horizontally with the arm, and the feed port of the loop antenna and the receiving circuit are connected. It is characterized by

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below. A wristwatch, which is a very common wrist-worn electronic device, will be described. FIG. 1 is a perspective view of a wrist watch explaining an embodiment of the invention, and FIG. 2 is a sectional view thereof.

The configuration of the portable arm type receiver according to the embodiment of the present invention is such that the feeding port 15 for supplying the antenna current to the antenna input portion pattern 33 of the substrate 27 and the push button 35 for operating the receiver are inserted. Antenna 11 made of a conductive material that has a side opening 13 and loops horizontally with respect to the arm, an opening 19 in the center, and a protrusion as a hook for holding the spring rod 45 and locking the band 41. A case 17 having a portion 21, a push button hole 23 through which a push button 35 is inserted, and having the antenna 11 as a core material and coated with a resin which is a non-conductive material, a receiving circuit 29, a liquid crystal display plate 25, and a substrate. A board 27 having an antenna input pattern 33 for mounting a transmission line 31 for carrying out data transmission with a push button 35 and for solder connection to the power supply port 15
And a back cover 37 made of a non-conductive material, a cover glass 39 that covers the opening surface 19, and a band 41 having a buckle 43.

Since the cover glass 39 and the case 17 have a waterproof structure, they are fixed by a strong fitting or a fixing means such as an adhesive, and the back cover 37 and the case 17 can be attached and detached for use such as battery replacement. But
It has a screw-in structure that ensures a sufficient waterproof structure. Further, the push button hole 23 and the like are kept waterproof by the packing to keep the confidentiality.

The operation of FIG. 1 will be described. First, the band 41 is wrapped around the arm and stopped with the buckle 43. When reception is required, the push button 35 is operated to set the reception mode. Radio waves transmitted from other sources are captured by the antenna 11 to become an antenna current, flow into the antenna input pattern 33 of the substrate 27 via the power supply port 15, and are demodulated in the receiving circuit 29 mounted on the substrate 27. The demodulation signal is sent to the liquid crystal display panel 25 via the transmission line 31, and the received message and the accurate correction time are displayed.

In the embodiment of FIG. 1, the power supply port 15
Since the case 17 has a C-shape having a cutout portion and the case 17 has a structure in which the antenna 11 is covered, the structure of the internal antenna does not exist other than the structural restriction as a watch case, and various structures are provided. Can be taken. 3 to 6 are views showing another embodiment showing a pattern of an antenna structure applicable to the present invention. This will be briefly described below.

In FIG. 3, a one-turn loop antenna that uses one side surface of the case 17 and loops perpendicularly to the arm when worn is shown. It has a shape in which one end is connected and the power supply port 15 is formed at the other end. Further, FIG. 4 shows a shape in which the loop antenna shown in FIG. 3 is extended to all side surfaces.

Next, in FIG. 5, a two-turn loop antenna that uses both side surface portions of the case 17 and loops perpendicularly to the arm when worn is shown in FIG.
The shape is such that the direction of rotation after the winding portion is reversed.

On the other hand, FIG. 6 shows the shape of an antenna that loops horizontally with respect to the arm when it is worn. It is a C-shaped one-turn coil, and the antenna 11 shown in FIG.
It has a shape in which 3 is removed, and a power supply port is formed at the end.

Further, although the antenna 11 is coated with resin in the wrist-worn receiver of the present invention, a metal housing can be realized by removing the resin coating. At this time, a portion that may come into direct contact with the arm, for example, a lower surface portion of the case 17 or the like, must be coated with a non-conductive material in order to prevent deterioration in sensitivity.

In the case of a timepiece that receives radio waves to correct the time, the antenna 11 may receive the radio waves at regular times. Furthermore, although the present embodiment has been described with reference to the receiving antenna, it goes without saying that the present invention can be applied to the transmitting antenna by changing the configuration of the antenna or the like.

[0022]

As is clear from the above description, the arm portable receiver in the embodiment of the present invention has a limited size of the arm portable receiver by making the case of the receiver function as a loop antenna. It becomes possible to satisfy the requirement to install an antenna as large as possible, and it is possible to improve the reception sensitivity.

Further, since the watch band is not used as an antenna, the flexibility of the watch band and the degree of freedom in structure selection are increased, and electrical conduction is realized without impairing the mobility required for connecting the wrist watch type receiver to the band. Freed from the difficulties.

[Brief description of drawings]

FIG. 1 is a perspective view of a wristwatch type receiver showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a wristwatch type receiver showing an embodiment of the present invention, and is a diagram explicitly showing a relationship between an antenna, a case, and a substrate.

FIG. 3 is a diagram showing a pattern of an antenna structure included in a case, which is a loop antenna using a side surface portion on one side of the case.

FIG. 4 is a diagram showing a pattern of an antenna structure included in a case, which is a loop antenna using a side surface of the entire circumference of the case.

FIG. 5 is a diagram showing a pattern of an antenna structure included in a case, which is a two-turn loop antenna using a side surface portion of the case, in which a rotating direction is reversed in the middle thereof.

FIG. 6 is a diagram showing a pattern of an antenna structure included in a case, which is a loop antenna using either an upper surface portion or a lower surface portion of the case.

[Explanation of symbols]

 11 Antenna 13 Side Opening 15 Feed Port 17 Case 19 Opening Surface 21 Projection 23 Push Button Hole 25 Liquid Crystal Display Board 27 Substrate 29 Receiver Circuit 31 Transmission Line 33 Antenna Input Pattern 35 Push Button 37 Back Cover 39 Cover Glass 41 Band 43 Buckle 45 spring rod

Claims (4)

[Claims] 1. A wrist carrying type receiver having a case having a built-in receiving mechanism and a band for carrying the case, wherein an antenna made of a conductive material is integrally provided in the case. An arm-portable receiver characterized in that a receiving circuit is built in the case. 2. The whole case forms an antenna made of a conductive material, and a hook for locking a band is formed on the case or the antenna.
Handheld receiver as described in. 3. The wrist-worn receiver according to claim 1, wherein the antenna is covered with a non-conductive material (eg, glass material, plastic material, ceramics, etc.). 4. The loop antenna, which loops vertically or horizontally to the arm when worn on the arm, and connects the feed port of the loop antenna and the receiving circuit. Alternatively, the wrist-worn receiver according to claim 3.