JP2016046628A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mechanism capable of containing a plurality of radio communication antennas without deteriorating appearance even if an electronic apparatus has a metal exterior at the front side of its apparatus body.SOLUTION: An electronic apparatus comprises: a metal front cover 5 forming an exterior at the front side of an apparatus body; a metal rear cover 6 forming an exterior at the rear side of the apparatus body; a first radio communication antenna 12 placed on the bottom surface of the apparatus body; and a second radio communication antenna 15 placed on one side surface of the apparatus body. Part of an external 9 of the bottom surface of the apparatus body, which part covers the first radio communication antenna 12, and part of an external 19 of the one side surface of the apparatus body, which part covers the second radio communication antenna 15, are both formed with resin material.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an electronic device such as a digital camera, and more particularly to an electronic device equipped with a plurality of wireless communication antennas.

  Some electronic devices such as digital cameras are equipped with a function of connecting to a smartphone via WiFi and transferring a remote image or captured image. In order to connect a digital camera and a smartphone with WiFi, complicated settings are required. However, NFC is installed on both the digital camera and the smartphone, and the user can set the WiFi connection settings by bringing both NFC antennas close to each other. It can be done easily.

  As a digital camera incorporating two wireless modules of WiFi and NFC, a technique has been proposed in which an antenna for transmitting and receiving data to and from a communication partner device is disposed on the opposite side of the liquid crystal display surface (Patent Document 1). ). In this proposal, when the antenna is pointed at the communication counterpart device, the operability is improved because the liquid crystal display surface is arranged at a position that is easy for the user to see.

JP 2011-91503 A

  By the way, the exterior of the camera is usually formed of a metal material such as aluminum or stainless steel due to measures against static electricity or the like.

  However, in Patent Document 1, if the front exterior of the camera that covers the antenna is formed of a metal material such as aluminum or stainless steel, a hole or the like is formed in the portion of the front exterior that covers the antenna, and a resin or the like that allows radio waves to pass is disposed. There is a problem that the appearance is deteriorated.

  Therefore, the present invention provides a mechanism capable of incorporating a plurality of wireless communication antennas without deteriorating the appearance even when the exterior of the front side of the device body is a metal electronic device. Objective.

  In order to achieve the above object, an electronic device according to the present invention includes a metal front cover that forms an exterior on the front side of a device body, a metal rear cover that forms an exterior on the back side of the device body, A first wireless communication antenna disposed on a bottom surface of the device main body, and a second wireless communication antenna disposed on one side surface of the device main body, the portion of the portion covering the first wireless communication antenna Both the exterior of the bottom surface of the device body and the exterior of one side surface of the device body in the portion covering the second wireless communication antenna are formed of a resin material.

  According to the present invention, it is possible to incorporate a plurality of wireless communication antennas without deteriorating the appearance even if the exterior on the front side of the device body is a metal electronic device.

It is the back perspective view which looked at the digital camera which is an example of the embodiment of the electronic equipment of the present invention from the bottom side. FIG. 2 is a partially exploded perspective view in a state where a display panel and a lens barrel are removed from the digital camera shown in FIG. 1. (A) is a figure which shows the loop pattern by the side of the surface of the antenna pattern of antenna FPC, (b) is a figure which shows the loop pattern by the side of the back surface of the antenna pattern of antenna FPC.

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a rear perspective view of a digital camera, which is an example of an embodiment of an electronic apparatus according to the invention, viewed from the bottom side.

  As shown in FIG. 1, the digital camera of this embodiment is provided with a display panel 2 such as an LCD on the back of the camera body 1, and various operation buttons 3 are provided on the side of the display panel 2. . A lens barrel 4 is provided on the front side of the camera body 1, and a subject image that has passed through the photographing optical system of the lens barrel 4 is formed on an imaging element (not shown) and is photoelectrically converted to a system circuit (not shown). Is displayed on the display panel 2. The camera body 1 corresponds to an example of a device body of the present invention.

  The exterior on the front side of the camera body 1 is formed by a front cover 5 made of metal such as aluminum, and the exterior on the back side of the camera body 1 is similarly formed by a rear cover 6 made of metal such as aluminum.

  On the bottom surface of the camera body 1, there are provided a tripod screw seat 7 used when fixing the camera body 1 to a tripod and a battery lid 8 that opens and closes when the battery is inserted into and removed from the camera body 1. The tripod screw seat 7 is arranged on the optical axis, so that the camera can be smoothly operated to be banned.

  On the bottom surface of the camera body 1, a mating portion of the front cover 5 and the rear cover 6 is disposed, and a communication opening is formed by the recessed portions 5a and 6a formed in the front cover 5 and the rear cover 6, respectively. A resin communication window 9 is provided in the opening.

  The exterior of the ridge line formed between the exterior of the bottom surface of the camera body 1 and the exterior of one side of the camera body 1 near the communication window 9 extends from the front cover 5 and the rear cover 6, respectively. The arm portions 5b and 6b are formed.

  2 is a partially exploded perspective view of the digital camera shown in FIG. 1 with the display panel 2 and the lens barrel 4 removed.

  As shown in FIG. 2, an inner cover 10 having a communication window portion 9 is disposed inside the front cover 5, and the communication window portion 9 is disposed in the communication opening portion as described above and is a camera. A part of the exterior of the bottom surface of the main body 1 is formed.

  In addition, a chassis 11 that is an injection-molded product of magnesium or the like is provided inside the camera body 1, and the chassis 11 is provided with an antenna FPC 13 having an antenna pattern 12 for performing short-range communication. The antenna pattern 12 is formed of a copper foil in a loop shape and is disposed on both surfaces of the antenna FPC 13. In the present embodiment, the antenna FPC 13 employs NFC, which is a standard for wireless communication. The antenna pattern 12 corresponds to an example of the first wireless communication antenna of the present invention.

  A WiFi unit 14 is mounted on the side surface of the camera body 1 on the side of the above-described arms 5b and 6b. On the circuit board of the WiFi unit 14, a chip antenna 15, a WiFi control IC 16, a FPC connector 17, and the like are mounted. A connector insertion portion 18 of the antenna FPC 13 is connected to the FPC connector 17.

  The WiFi unit 14 is covered together with the chip antenna 15 by a resin left side cover 19 that forms an exterior of the left side surface of the camera body 1. The chip antenna 15 corresponds to an example of a second wireless communication antenna of the present invention, and the WiFi unit 14 corresponds to an example of a wireless communication unit of the present invention.

  Here, the antenna pattern 12 of the antenna FPC 13 is covered with a communication window portion 9 made of a resin material, and the chip antenna 15 of the WiFi unit 14 is also covered with a left side cover 19 made of a resin material. For this reason, it is possible to ensure excellent communication performance without covering any of the antennas 12 and 15 with a metal body that hinders communication. In the present embodiment, the inner cover 10 having the communication window portion 9 and the left side cover 19 are separated from each other in view of assemblability, but by integrating them, the number of parts is reduced and the cost is reduced. You can also.

  3A is a diagram showing a loop pattern 12a on the front surface side of the antenna pattern 12 of the antenna FPC 13, and FIG. 3B is a diagram showing a loop pattern 12b on the back surface side of the antenna pattern 12 of the antenna FPC 13. In FIG. 3, the antenna FPC 13 is illustrated in a flat form so that the connection state between the antenna FPC 13 and the system circuit board or the circuit board of the WiFi unit 14 can be seen. The positional relationship between the antenna FPC 13 and the communication window 9 is also illustrated.

  As shown in FIGS. 3A and 3B, the antenna pattern 12 of the antenna FPC 13 includes a loop pattern 12 a on the back surface provided on the surface facing the chassis 11 and the surface facing the communication window 9. And a loop pattern 12b on the surface side provided on the surface. The loop pattern 12a and the loop pattern 12b are connected by a through hole (not shown).

  The antenna pattern 12 is connected to the communication IC mounted on the system circuit board via the FPC connector 21 with the loop pattern 12a on the back side of the antenna FPC 13 connected to the connector insertion portion 20 by wiring. A WiFi relay pattern 22 that connects the connector insertion portion 18 and the connector insertion portion 20 is formed on the back side of the antenna FPC 13. The WiFi control IC 16 of the WiFi unit 14 and the system circuit board are connected via the WiFi relay pattern 22 and the FPC connector 17.

  On the surface side of the antenna FPC 13, that is, on the side where the loop pattern 12 b is formed, a solid shield pattern 23 is formed at a substantially central portion of the WiFi relay pattern 22. The shield pattern 23 is connected to the ground pattern of the WiFi relay pattern 22 through a through hole (not shown).

  As shown in FIG. 3A, the antenna pattern 12 and the WiFi relay pattern 22 are arranged on the antenna FPC 13 so as not to overlap each other. Thereby, interference between the WiFi signal and the NFC signal in the antenna FPC 13 can be prevented.

  A battery lid 8 is disposed on one side with a tripod screw seat 7 disposed substantially at the center of the bottom surface of the camera body 1, and a space is formed between the chassis 11 and the bottom surface exterior on the other side. By arranging the relatively thin antenna FPC 13 in this space, the limited space in the camera body 1 can be used effectively.

  Further, by arranging the WiFi unit 14 on one side surface adjacent to the bottom surface of the camera body 1 on which the antenna FPC 13 is arranged, the NFC antenna pattern 12 and the WiFi relay pattern 22 are configured by one FPC, and the number of parts is increased. Can be reduced.

  Since the WiFi signal is driven at high speed, unnecessary radiation is likely to be generated. However, by covering the WiFi relay pattern 22 with metal arms 5b and 6b, the unnecessary radiation to the outside of the camera body 1 can be suppressed by the shielding effect. Can do.

  As shown in FIG. 3B, a part of the WiFi relay pattern 22 is disposed so as to overlap the communication window 9. Since the communication window portion 9 is made of resin, there is no shielding effect. Therefore, unnecessary radiation of the WiFi signal passing through the WiFi relay pattern 22 leaks from the communication window portion 9.

  However, in this embodiment, since the shield pattern 23 is disposed between the communication window 9 and the WiFi relay pattern 22, it has a shielding effect against unnecessary radiation of the WiFi signal, and the outside of the camera body 1. Unwanted radiation can be prevented.

  As described above, in this embodiment, even if the exterior of the camera body 1 is a metal digital camera, a plurality of wireless communication antennas 12 and 15 are incorporated without deteriorating the appearance. It becomes possible.

  Further, in the present embodiment, even when the camera falls from the ridge line side of the camera body 1, the exterior of the ridge line part is formed by the metal arm parts 5 b and 6 b, thereby preventing the camera from being damaged. it can.

  The configuration of the present invention is not limited to that exemplified in the above embodiment, and the material, shape, dimensions, form, number, arrangement location, and the like can be changed as appropriate without departing from the scope of the present invention. It is.

DESCRIPTION OF SYMBOLS 1 Camera body 5 Front cover 5b, 6b Arm part 6 Rear cover 9 Communication window part 12 Antenna pattern 13 Antenna FPC
14 WiFi unit 15 Chip antenna 19 Left side cover 22 WiFi relay pattern

Claims (3)

A metal front cover that forms an exterior on the front side of the device body, a metal rear cover that forms an exterior on the back side of the device body, and a first wireless communication antenna disposed on the bottom surface of the device body; A second wireless communication antenna disposed on one side of the device body,
The exterior of the bottom surface of the device body that covers the first wireless communication antenna and the exterior of one side surface of the device body that covers the second wireless communication antenna are both formed of a resin material. An electronic device characterized by   The exterior of the ridge line portion formed between the exterior of the bottom surface of the device body and the exterior of one side surface of the device body is formed by metal arm portions respectively extending from the front cover and the rear cover. The electronic device according to claim 1, wherein: A circuit board on which an antenna pattern of the first wireless communication antenna is wired;
A system circuit board connected to the circuit board,
The circuit board is connected to a wireless communication unit equipped with the second wireless communication antenna, and is wired with a relay pattern for relaying the signal of the second wireless communication antenna to the system circuit board,
The electronic device according to claim 1, wherein the antenna pattern and the relay pattern are wired apart from each other.