JP3060995U - Antenna for wireless intercom - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To enable a user to be notified of an incoming call by light without deteriorating the sensitivity of receiving / transmitting. SOLUTION: A battery 12 as a power source for light emitting diodes 10a to 10e is housed in a battery housing unit 3. In addition, since at least a part of the light emission control circuit for causing the light emitting diodes 10a to 10e to emit light is formed as a wiring pattern on the printed circuit board 8, the apparent resonance frequency is maintained while maintaining the same resonance frequency as that of the conventional stretch type. The length could be shortened.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a radio communication antenna, and more particularly, to a radio communication antenna capable of visually displaying that the radio communication device is in use, for example, when a call is made.

[0002]

[Prior art]

 2. Description of the Related Art A wireless telephone such as a mobile phone, a PHS, and a cordless telephone may be provided with an optical display device such as a light emitting diode (LED) for notifying an incoming call to the telephone with light. Such an optical display device is very advantageous in that the calling can be visually confirmed depending on the usage environment of the wireless communication device, such as when the surroundings are noisy or when a ringing tone cannot be emitted in a music hall or the like. However, the optical display device provided in such a main body has a relatively small size itself, and the user cannot perceive the light emission depending on the arrangement state of the radio telephone, and the original light display device is not provided. Many cannot fulfill their roles.

In order to more surely notify a user of an incoming call to a wireless communication device, a technology has been developed in which an optical display device is provided not in the wireless communication device itself but in an antenna portion. For example, Japanese Utility Model Registration No. 307220 describes a display device for a mobile phone comprising a pair of rectifying diodes, a light emitting element, and conductive legs connecting between the light emitting element and the light emitting element. This display device is attached to the tip of an existing antenna with an adhesive. When the mobile phone is used, the direct current rectified by the pair of rectifier diodes flows through the light emitting element in the forward direction, so that the light emitting element emits light continuously. By providing the optical display device at the tip of the antenna protruding from the main body in this way, even when the optical display device provided in the mobile phone main body is not visible to the user, incoming calls to the mobile telephone can be more reliably performed. It is possible to inform the user.

[0004]

[Problems to be Solved by the Invention] However, the technology described in the above publication has the following problems. First, according to the technology described in the above publication, the current flowing through the antenna when a mobile phone is used is used as an energy source for light emission of the light emitting element, so that transmission and reception are performed according to the energy consumption of the light emitting element. Sensitivity is degraded.

[0005] Also, the display device described in the above publication is attached to the tip of an existing antenna, but the antenna of a mobile phone is stretched at the time of use in order to secure a necessary length for receiving and transmitting radio waves. Often used. Therefore, it is necessary to perform the troublesome operation of extending the antenna, and the antenna is much longer than usual when used, making it difficult to handle.In addition, failures such as bending of the antenna at a sudden beat occur frequently. . For this reason, an antenna that can secure sufficient sensitivity without being stretched during use is desired.

[0006] Therefore, an object of the present invention is to provide an antenna for a wireless communication device that can notify a user of an incoming call by light without deteriorating the sensitivity of receiving and transmitting.

Another object of the present invention is to allow a user to be notified of an incoming call by light without deteriorating the sensitivity of receiving and sending, and to provide sufficient sensitivity even if it is relatively short without having to be stretched at the time of use. An object of the present invention is to provide an antenna for a wireless communication device that can be secured.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, an antenna for a wireless communication device according to claim 1 of the present application includes a light emitting element, a light emission control circuit for causing the light emitting element to emit light when the wireless communication device is used, and a power supply for the light emitting element. Battery.

According to the first aspect of the present invention, since a battery is provided as a power supply for the light emitting element, when the light emitting element emits light when the wireless telephone is used, a current flowing through the antenna causes the light emitting element to emit light. It is not consumed as energy. As a result, the sensitivity of incoming and outgoing signals is not degraded, and the call can be performed with good sensitivity.

[0010] Further, by providing a battery as a power supply for the light emitting element, the light emitting element emits light more brightly. This is because the communication frequency of mobile phones tends to increase from the conventional 150-400 MHz to 800 MHz to 1.5 GHz, and the power-saving design of mobile phones has progressed, and the self-transmission output during use has been further reduced. In light of the fact that conventional optical display devices do not emit light with sufficient luminance during use and do not even emit light in some cases, it can be said that this is a very remarkable and useful effect. Further, as another effect according to claim 1, when the antenna for a wireless telephone having a battery is attached as in claim 1, not only the sensitivity does not deteriorate as described above, but the detailed reason is unknown. It has been confirmed that the sensitivity increases.

[0011] At present, many antennas for wireless telephones are commercialized. However, providing a battery in the antenna for wireless telephones requires current energy during use as energy for light emission. It is located outside of the mainstream of product development because of its availability and little space for installing batteries in the antenna itself. However, the inventor of this invention deviated from the current mainstream of product development, but as a result of working on R & D, came to the present invention which is extremely practical and has excellent effects as described above. Things.

In the antenna for a wireless communication device according to a second aspect, the light emission control circuit is formed as a wiring pattern on a printed circuit board.

According to the second aspect, since at least a part of the light emission control circuit is formed as a wiring pattern on a printed circuit board, its apparent resonance frequency is maintained while maintaining the same resonance frequency as that of a conventional stretch type. The length can be shortened. That is, the resonance frequency f of the antenna, which is equivalent to a series connection circuit of a coil (inductance L), a capacitor (capacitance C), and a resistor (resistance R), is f = 1 / (2π） (LC)). In the antenna for a wireless communication device according to claim 2, the relatively large inductance formed by the wiring pattern on the printed circuit board is an inductance of a portion other than the printed circuit board made of, for example, a rod-shaped conductive member. Therefore, the resonance frequency of the antenna as a whole is lowered, and the antenna can be used as an antenna having a desired frequency. As a result, the length of the antenna other than the printed circuit board can be shorter than before, and the antenna does not have to be extended, which makes it difficult to handle the antenna and makes it difficult to handle. In addition, the probability that an antenna failure will occur can be greatly reduced.

According to a third aspect of the present invention, in the antenna for a wireless communication device, a plurality of the light emitting elements are provided at one end and one side in a longitudinal direction of the printed board, and the plurality of light emitting control circuits are provided. The light emitting elements are controlled to blink sequentially.

According to the third aspect, not only a plurality of light emitting elements are provided on one end and one side surface in the longitudinal direction of the printed circuit board, but also the plurality of light emitting elements are controlled so as to blink sequentially. The visibility of the light emitting element by the user becomes very high, and the blinking of the light emitting element during use can be more reliably notified to the user. That is, since the light emitted from the light emitting element propagates in various directions and emits light so as to attract the user's attention, the probability that the light from the light emitting element reaches the user's eyes increases. Therefore, the user can recognize the incoming call with a higher probability.

In the antenna for a wireless communication device according to a fourth aspect, the battery is housed in a conductive member having a cavity therein.

Most of radio waves having a high frequency of 800 MHz or more, such as those used in mobile phones, flow near the surface of the conductor due to the skin effect. In other words, even if a conductive member having no center portion that hardly functions as an antenna is provided and a battery is stored therein, there is no substantial hindrance to antenna performance. Also, since there is no need to provide a separate storage space for batteries, efficient use of space can be achieved. Therefore, according to the fourth aspect, it is possible to reduce the size of the antenna while maintaining the transmission / reception performance.

In the antenna for a wireless communication device according to a fifth aspect, at least one bent portion that can be fixed at an arbitrary position is provided on the base side.

According to the fifth aspect, since at least one bent portion that can be fixed at an arbitrary position is provided on the base side, a position in which the reception state is good by an easy operation simply by changing the bending angle of the bent portion. Can be found quickly. This is an excellent effect especially in the weak electric field area. In addition, if the antenna is normally folded by bending the bent part, the antenna does not become bulky and does not disturb the antenna when carrying it in a bag or chest pocket, etc. It is possible to fix the wireless communication device by using the bent part as a clip.

Further, for example, when the wireless communication device is inserted into a breast pocket by using the bent portion as a clip, the light emitting element provided on one side surface of the printed circuit board faces the front as described in claim 3. Sometimes it can effectively appeal to the visuals of the user. As the bent portion, any known member can be used in addition to a member in which two members are rotatably fitted or pivotally joined to each other.

[0021]

[Embodiment of the invention]

 Hereinafter, a preferred embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is an overall perspective view of a mobile phone antenna according to the present embodiment. FIG. 2 is a cross-sectional view of the mobile phone antenna of FIG. FIG. 3 is a partially enlarged sectional view of the distal end side of the mobile phone antenna of FIG. FIG. 4 is an equivalent circuit diagram of an electrical operation portion of the mobile phone antenna of FIG.

As shown in FIG. 1, an antenna 1 for a mobile phone according to the present embodiment has a cap 2, a battery housing 3, a connection upper part 4, a connection middle part 5, and a connection lower part 6. And are combined. Of these, the cap 2 having a deep recess is made of a transparent or translucent plastic material that is insulative, and protects a printed board 8 (see FIG. 2) described later. The battery housing 3, the upper connection part 4, the middle connection part 5 and the lower connection part 6 are made of a conductive metal material. A male screw 6a is formed at the lower end of the connecting lower part 6 so that the male screw 6a can be attached to a mobile phone by screwing.

As shown in FIGS. 2 and 3, a flat printed circuit board 8 is inserted into the concave portion of the cap 2. The printed circuit board 8 is provided with a total of five light emitting diodes (LEDs), one (10a) at the end of the antenna in the longitudinal direction and four (10b to 10e) on the side surface. Further, on the surface of the printed circuit board 8, a light emission control circuit for causing the light emitting diodes 10a to 10e to emit light when the mobile phone is used is provided. Of the light emitting diodes 10a to 10e, 10a, 10c, and 10e are diodes that emit red light, and 10b and 10d are diodes that emit green light.

Two button-shaped batteries 12 are housed inside the cylindrical portion of the cylindrical battery housing 3 with an upper lid. These two batteries 12 are connected in series, one of the positive and negative poles is connected to the printed circuit board 8 side via a conductive connecting member 14, and the other pole is connected to the connecting upper part 4. Are connected to the printed circuit board 8 via the battery housing 3 and the connection member 15. Insulating members 18 and 19 are provided on the upper and lower surfaces of the battery housing 3 so that the two poles of the battery 12 are not short-circuited. ) Is applied.

The cap 2 and the battery housing 3, and the battery housing 3 and the connection upper part 4 are connected to each other by screwing. Further, the upper connection portion 4 and the middle connection portion 5, and the middle connection portion 5 and the lower connection portion 6 are connected to each other by bolts 17. More specifically, the leg of the connection upper part 4 is sandwiched between slits provided at the upper end of the connection middle part 5, and this part is bolted so that the two can be fixedly connected at an arbitrary connection angle. , A bent portion is formed. The same applies to the middle connection part 5 and the lower connection part 6.

Next, the operation of the mobile phone antenna according to the present embodiment will be described with reference to FIG. The circuit shown in FIG. 4 senses that the above-mentioned five light emitting diodes 10a to 10e, a control device 22 which is an integrated circuit for controlling the light emitting order of these light emitting diodes, and that the mobile phone is in use. It has a Schottky diode 24 serving as a switch for passing a current through the circuit, a PNP transistor 25 for amplifying a current flowing through the circuit, a diode 26 provided for rectification, a capacitor 28, and resistors 30 and 32. ing. This circuit is formed as a wiring pattern on the printed circuit board 8 except for parts formed as integrated circuits such as the Schottky diode 24 and the control device 22.

The five light emitting diodes 10 a to 10 e are connected in parallel between the battery 12 serving as a power source thereof and the control device 22. When the mobile phone is used, for example, by being called, the Schottky diode 24 as a switch is turned on, and the signal is amplified by the PNP transistor 25 and sent to the control device 22.

When receiving this signal, the control device 22 causes the five light emitting diodes 10a to 10e to blink sequentially in the order of 10e → 10d → 10c → 10b → 10a → 10e →. In other words, the five light emitting diodes 10a to 10e emit light in a short time alternately in red and green according to the arrangement order.

When communication with the mobile phone is completed and the mobile phone is put into a non-use state, the Schottky diode 24 as a switch is turned off, and the signal supply to the control device 22 is stopped. The blinking of 10a to 10e also ends.

According to the mobile phone antenna of the present embodiment configured as described above, since the battery 12 is provided as a power source for the light emitting diodes 10a to 10e, the light emitting diodes 10a to 10e are used when the mobile phone is used. When 10e emits light, the current flowing through the antenna 1 is not consumed as energy for light emission of the light emitting diodes 10a to 10e. Therefore, the sensitivity of receiving and transmitting is not degraded, and the call can be performed with good sensitivity. Also, although the detailed reason is unknown, the sensitivity of mobile phones increases. Further, the provision of the battery 12 as a power source for the light emitting diodes 10a to 10e allows the light emitting diodes 10a to 10e to emit light more brightly, thereby attracting the user's attention more easily than before.

Further, since at least a part of the light emission control circuit is formed as a wiring pattern on the printed circuit board 8, a relatively large inductance created by the wiring pattern on the printed circuit board 8 causes the connection upper part 4 and the like to have a relatively large inductance. Since it is added to the inductance of the antenna portion other than the printed circuit board 8, the apparent length can be shortened while maintaining the same resonance frequency as the conventional stretch type. Therefore, the length of the portion other than the printed circuit board 8, that is, the length of the antenna from the connection upper portion 4 to the connection lower portion 6 may be shorter than before, and the antenna does not have to be a stretched type. This makes it possible to significantly reduce the probability of occurrence of antenna failure.

A plurality of light emitting diodes 10 a to 10 e are provided on one end and one side surface in the longitudinal direction of the printed circuit board 8, and a light emission control circuit blinks the plurality of light emitting diodes 10 a to 10 e sequentially. By performing such control, the visibility of the light emitting diodes 10a to 10e by the user becomes extremely high, and the user can be more reliably notified of the blinking of the light emitting diodes 10a to 10e during use.

Further, in the mobile phone antenna 1 of the present embodiment, since the battery 12 is housed in the battery housing 3 having a cavity therein, the skin effect in a high frequency region is effectively used. This makes it possible to reduce the size of the antenna 1 while maintaining the transmission / reception performance.

Further, since two bent portions that can be fixed at arbitrary positions are provided on the base side of the antenna 1, a good position in a reception state can be obtained by an easy operation simply by changing the bending angle of the bent portion. You can find it quickly.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various design changes can be made. For example, the colors of the light emitting diodes 10a to 10e may be other colors, or three or more colors may be used. Also, the number of light emitting diodes can be arbitrarily changed. The number of bent portions connected by the bolts 17 does not necessarily need to be two, but may be one or more. In addition, the cap 2 does not necessarily need to cover the entire printed circuit board 8, and for example, only the light emitting diode 10a may protrude from an opening provided at the tip of the cap 2. In addition, changes within the scope described in the claims for utility model registration are possible.

[0037]

[Effect of the invention]

 As described above, according to the first aspect, since a battery is provided as a power supply for the light emitting element, the sensitivity of transmission / reception does not deteriorate, and a call can be made with good sensitivity. , And the light emitting element becomes brighter. Further, although the detailed reason is unknown, it has been confirmed that the sensitivity is increased.

According to the second aspect, since at least a part of the light emission control circuit is formed as a wiring pattern on a printed circuit board, its apparent frequency is maintained while maintaining the same resonance frequency as that of the conventional stretch type. The length can be shortened.

According to the third aspect, not only a plurality of light emitting elements are provided at one end and one side surface in the longitudinal direction of the printed circuit board, but also the plurality of light emitting elements are controlled so as to blink sequentially. Therefore, the visibility of the light emitting element by the user becomes very high, and the blinking of the light emitting element during use can be more reliably notified to the user.

According to the fourth aspect, it is possible to reduce the size of the antenna while maintaining the transmission / reception performance.

According to the fifth aspect, at least one bent portion that can be fixed to an arbitrary position is provided on the base side, so that the receiving state can be easily operated by simply changing the bending angle of the bent portion. You can quickly find a good location.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a mobile phone antenna according to a preferred embodiment of the present invention.

FIG. 2 is a cross-sectional view of the mobile phone antenna of FIG. 1;

3 is a partially enlarged cross-sectional view of the distal end side of the mobile phone antenna of FIG.

FIG. 4 is an equivalent circuit diagram of an electric operation portion of the antenna for a mobile phone of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mobile phone antenna 2 Cap 3 Battery storage part 4 Connection upper part 5 Connection middle part 6 Connection lower part 8 Printed circuit board 10a-10e Light emitting diode 12 Battery

Claims (5)

[Utility model registration claims] 1. A wireless communication device comprising: a light emitting device; a light emission control circuit for causing the light emitting device to emit light when the wireless communication device is used; and a battery as a power supply for the light emitting device. antenna. 2. The antenna according to claim 1, wherein at least a part of the light emission control circuit is formed as a wiring pattern on a printed circuit board. 3. A plurality of the light emitting elements are provided at one end and one side in a longitudinal direction of the printed circuit board,
3. The light emission control circuit controls the plurality of light emitting elements so as to blink sequentially.
An antenna for a wireless communication device according to item 1. 4. The antenna according to claim 1, wherein the battery is housed in a conductive member having a cavity therein. 5. The antenna for a wireless communication device according to claim 1, wherein at least one bent portion that can be fixed at an arbitrary position is provided at a base side.