JP2011015295A - Wireless communication apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a wireless communication apparatus which has a directivity in a specific direction with a simple configuration.SOLUTION: A wireless communication apparatus comprises: a communication antenna 12; a resin case 13 accommodating the communication antenna 12; a reflector 14 for reflecting radio waves radiated by the communication antenna 12; and a mount member for mounting the reflector 14 at each of a plurality of different positions on a side surface of the resin case 13. The reflector 14 is mounted at a predetermined position on the resin case 13 by the mount member, thereby obtaining directivity of the communication antenna 12 in a specific direction.

Description

  The present invention relates to a wireless communication apparatus incorporating a communication antenna.

  2. Description of the Related Art Conventionally, a wireless data communication apparatus is known that is used by being fixed at a certain place, such as being installed at a predetermined place in a home. In a wireless data communication apparatus with a built-in communication antenna, it is difficult to adjust the directivity after being installed in a predetermined place in this way. For this reason, in order to give the communication antenna directivity, it was necessary to attach a movable antenna outside the apparatus. However, a structure in which an antenna is attached to the outside is not preferable in design.

  As a technique for adjusting the directivity of a built-in antenna, for example, Patent Document 1 discloses a technique for directly moving a conductor pattern serving as a waveguide and a reflector of an antenna. Patent Document 2 discloses a PCMCIA card connector in which a directional antenna is installed.

JP 2005-26943 A JP 2005-72962 A

  However, since the method according to Patent Document 1 is complicated to adjust and directly changes the antenna characteristics of the wireless device, it is difficult for a general user to easily adjust. Further, the method according to Patent Document 2 has a problem that the direction of directivity cannot be adjusted after the antenna is installed.

  The present invention has been made in view of the above, and an object of the present invention is to obtain a wireless communication apparatus having directivity in a specific direction with a simple configuration.

  In order to solve the above-described problems and achieve the object, the present invention is a wireless communication device, which is a communication antenna, a resin case that houses the communication antenna, and a reflection that reflects radio waves radiated from the communication antenna A plate and an attachment member capable of attaching the reflector to a plurality of different positions on the side surface of the resin case, and attaching the reflector to a predetermined position of the resin case by the attachment member in a specific direction. The directivity of the communication antenna is obtained.

  According to the present invention, there is an effect that directivity can be provided in a specific direction with a simple configuration.

FIG. 1 is a diagram illustrating an overall configuration of a wireless system according to the first embodiment. FIG. 2 is a schematic configuration diagram of the transmission unit. FIG. 3 is a diagram illustrating an external configuration of a transmission unit according to the second embodiment. FIG. 4 is a diagram illustrating a configuration of a transmission unit according to the third embodiment. FIG. 5 is a diagram of a configuration of a transmission unit according to the fourth embodiment.

  Embodiments of a wireless communication apparatus according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating an overall configuration of a wireless system 1 according to the first embodiment. The wireless system 1 is a solar power generation system, and includes a solar cell module 2, a power conditioner 3, a distribution board 4, a transmission unit 5, a reception unit 6, and a monitor 7. The transmission unit 5 and the reception unit 6 are wireless communication devices of the present invention, and transmit and receive information such as the amount of power generated by the solar cell module 2 and the power conditioner 3 and the amount of power consumed by the distribution board 4. The receiving unit 6 displays these pieces of information on the monitor 7 in addition to the monitor provided in itself. Thereby, the user can easily know the power generation amount, the power consumption amount, and the like. The transmission unit 5 and the reception unit 6 are fixedly installed at a predetermined place in each home and used.

  FIG. 2 is a schematic configuration diagram of the transmission unit 5. The transmission unit 5 includes a main processing board 10, a wireless module 11, a communication antenna 12, a resin case 13 that accommodates these, and a reflector 14 that can be attached to the resin case 13.

  The main processing board 10 is a calculation means for performing various calculations. The wireless module 11 performs processing related to wireless communication. The communication antenna 12 transmits and receives radio waves. The communication antenna 12 is formed on the wireless module 11. In addition, although the communication antenna 12 of this Embodiment is installed so that the longitudinal direction of the communication antenna 12 may become parallel to a horizontal direction, as another example, the longitudinal direction of the communication antenna 12 is parallel to a perpendicular direction. It may be installed to become. The wireless module 11 is formed on the main processing substrate 10. When the wireless module 11 and the main processing board 10 are arranged in a position where they overlap each other in the horizontal direction, radio waves radiated from the communication antenna 12 are blocked by the main processing board 10. Therefore, in this way, the main processing board 10 and the wireless module 11 are installed at positions that do not overlap in the horizontal direction. As another example, the wireless module 11 may be formed below the main processing board.

  The resin case 13 is a rectangular parallelepiped case formed of a resin that does not shield radio waves from the communication antenna 12. The back surface 13a of the resin case 13 is provided with, for example, an attachment member for attachment to a wall or the like in a house, and the back surface 13a of the resin case 13 can be fixed to the wall or the like by the attachment member.

  The transmission unit 5 communicates with the reception unit 6. For this reason, it is desirable that the communication antenna 12 of the transmission unit 5 has directivity in the direction of the reception unit 6. The reflector 14 reflects radio waves radiated from the communication antenna 12. That is, by controlling the position of the reflector 14, the directivity of the communication antenna 12 can be obtained in a specific direction.

  An adhesive sheet 15 as an attachment member for attaching the reflection plate 14 to the resin case 13 is provided on the back surface 14 a of the reflection plate 14. The reflection plate 14 is fixed to the resin case 13 by the adhesive sheet 15. The reflection plate 14 can be attached to any position on the side surface including the front surface, the back surface, the right side surface, and the left side surface of the resin case 13 by the adhesive sheet 15. That is, the resin case 13 can be attached to any position among a plurality of positions such as the front and back surfaces.

  The resin case 13 and the reflection plate 14 are not provided integrally, but are provided in a state that can be attached by the adhesive sheet 15 as described above. The installation positions of the transmission unit 5 and the reception unit 6 are often limited by the structure of the house, the position of the distribution board 4 and the like, and can be installed at positions that take into account the directivity of the transmission unit 5 and the reception unit 6. Is not limited. However, in the transmission unit 5 of the present embodiment, the reflector 14 is provided in a state that it can be attached to the resin case 13. For this reason, after installing the transmission unit 5 and the reception unit 6, by attaching the reflecting plate 14 at a position on the side surface of the resin case 13 so as to obtain directivity in the direction of the reception unit 6, a specific direction, That is, the directivity of the communication antenna 12 in the direction of the receiving unit 6 can be obtained.

  Specifically, the reflecting plate 14 may be attached to the left side surface of the resin case 13 in order to obtain directivity in the direction of the right side surface of the resin case 13. Thus, the reflecting plate 14 can be freely attached according to the direction in which directivity is desired.

  The configuration of the transmission unit 5 has been described above with reference to FIG. 2, but the configuration of the reception unit 6 is the same as the configuration of the transmission unit 5. That is, the reflecting plate 14 can be attached to the resin case 13 in order to obtain the directivity of the communication antenna 12 in the direction of the transmission unit 5. Thereby, the radio wave from the transmission unit 5 can be received efficiently.

  In addition, the attachment member which attaches the reflecting plate 14 to the resin case 13 is not limited to the adhesive sheet 15, What is necessary is just a thing which can fix the reflecting plate 14 to the resin case 13, such as a double-sided tape and an adhesive agent, for example. .

  As another example, a plurality of reflection plates 14 may be provided, and a plurality of reflection plates 14 may be attached to the resin case 13. Thereby, not only the fixed position of the reflecting plate 14 but also the size and shape of the reflecting plate can be made variable, so that more appropriate directivity can be obtained.

  As another example, the pressure-sensitive adhesive sheet provided on the reflection plate 14 may be removable. Thereby, the reflecting plate 14 can be fixed to a plurality of positions of the resin case 13, the communication state can be confirmed at each position, and the reflecting plate 14 can be fixed to the most appropriate position.

Embodiment 2. FIG.
FIG. 3 is a diagram illustrating an external configuration of the transmission unit 16 according to the second embodiment. In the transmission unit 16 according to the second embodiment, the structure for attaching the reflecting plate 14 to the resin case 13 is different from the transmission unit 5 according to the second embodiment. In the second embodiment, the attachment members for attaching the reflecting plate 14 to the resin case 13 are slide rails 17 </ b> A and 17 </ b> B provided on the side surface of the resin case 13. The slide rails 17A and 17B support the upper side and the lower side of the reflecting plate 14, respectively. Thereby, the reflecting plate 14 is slidably supported on the side surface of the resin case 13. The slide rails 17A and 17B are provided on all of the front surface, the back surface, the right side surface, and the left side surface of the resin case 13, and can fix the reflecting plate 14 at an arbitrary position.

  The remaining configuration of the wireless system according to the second embodiment is the same as that of the wireless system 1 according to the first embodiment.

Embodiment 3 FIG.
FIG. 4 is a diagram illustrating a configuration of the transmission unit 18 according to the third embodiment. In the transmission unit 18 according to the third embodiment, the wireless module 11 is formed on the main processing board 10. Only the communication antenna 12 is provided independently on the main processing board 10. Also in the present embodiment, the reflecting plate 14 can be attached to the resin case 13, and the directivity of the communication antenna 12 is obtained in the direction of the receiving unit 6 by fixing the reflecting plate 14 at an arbitrary position. be able to.

  The remaining configuration of the wireless system according to the third embodiment is the same as that of the wireless system according to the other embodiments.

Embodiment 4 FIG.
FIG. 5 is a diagram illustrating a configuration of the transmission unit 19 according to the fourth embodiment. The transmission unit 19 according to the fourth embodiment includes a first resin case 20A that houses the main processing board 10 and a second resin case 20B that houses the wireless module 11 on which the communication antenna 12 is mounted. The first resin case 20A is a rectangular parallelepiped case, and the second resin case 20B is a cylindrical case. The reflecting plate 21 is a curved surface having a curvature corresponding to the curvature of the side surface of the second resin case 20B. Also in this case, the reflecting plate 21 can be attached to an arbitrary position of the second resin case 20B. By attaching the reflecting plate 21 to a predetermined position, the directivity of the communication antenna 12 in the direction of the receiving unit 6 is increased. Obtainable.

  The remaining configuration of the wireless system according to the fourth embodiment is similar to that of the wireless system according to the other embodiments.

DESCRIPTION OF SYMBOLS 1 Wireless system 5 Transmitting unit 6 Receiving unit 10 Main processing board 11 Wireless module 12 Communication antenna 13 Resin case 14 Reflecting plate 15 Adhesive sheet 17A, 17B Slide rail

Claims (5)

A communication antenna;
A resin case for housing the communication antenna;
A reflector that reflects radio waves radiated from the communication antenna;
An attachment member capable of attaching the reflector to a plurality of different positions on the side surface of the resin case;
A wireless communication apparatus, wherein the directivity of the communication antenna is obtained in a specific direction by attaching the reflector to a predetermined position of the resin case by the attachment member.   The wireless communication apparatus according to claim 1, wherein the attachment member is capable of detaching the reflection plate from the side surface.   The wireless communication apparatus according to claim 1, wherein the attachment member is an adhesive sheet.   The wireless communication apparatus according to claim 1, wherein the attachment member is provided on a side surface of the resin case, and supports the reflector so as to be slidable in a lateral direction along the side surface of the resin case. A main processing board for performing computations;
The wireless communication apparatus according to claim 1, wherein the communication antenna is disposed on an upper portion or a lower portion of the main processing board.

Images