JP6667777B2 - Storage case - Google Patents

Description

  The present invention relates to a storage case for storing a smartphone, an IC card, and the like.

  2. Description of the Related Art Various mobile terminal cases have been used for the purpose of preventing damage to high-performance mobile terminals such as smartphones. As a typical form of the mobile terminal case, there is a case having a box-like shape that covers the back and side surfaces of the mobile terminal and exposes the surface (operation surface) of the mobile terminal. Also, IC cards such as IC commuter passes are often used in a pass case for the purpose of preventing loss or damage.

  Both mobile terminals and IC cards use radio waves. If a light emitting element provided in a storage case can be made to emit light using radio waves when a portable terminal or an IC card is used, a storage case excellent in design can be realized.

  For example, in Patent Literatures 1 to 3, a light emitting element such as an LED and an antenna are provided in a case for a mobile terminal so that an operation state of the mobile terminal can be easily grasped. Has been attempted to emit light.

JP 2014-21638 A JP 2014-96693 A JP 2013-157975 A

  An object of the present invention is to provide a storage case provided with a circuit capable of causing a light emitting element to emit light using radio waves.

  The storage case according to the present invention includes a circuit board having a light emitting element. The circuit board includes a substantially rectangular first substrate, an antenna provided on a back surface of the first substrate, and extending along a part of an outer peripheral edge of the first substrate, a ground provided on the back surface of the first substrate, and an antenna. A booster circuit electrically connected to the ground and a light emitting element provided on the front surface side of the first substrate and electrically connected to the booster circuit and the ground. The antenna includes a first antenna portion extending along a first side, which is one of four sides of the substrate, and a second side, which is one of two sides adjacent to the first side. And a third antenna portion extending along the third side opposite to the first side and connected to the second antenna portion and the booster circuit. It is composed of

  ADVANTAGE OF THE INVENTION According to this invention, the storage case provided with the circuit which can make a light emitting element emit light using a radio wave can be provided.

FIG. 2 is a perspective view of a mobile terminal case according to the first embodiment. Sectional view along the line II-II shown in FIG. FIG. 2 is a plan view of a circuit board included in the mobile terminal case according to the first embodiment. Back view of the circuit board shown in FIG. FIG. 3 is a circuit diagram of a circuit configured on a circuit board included in the mobile terminal case according to the first embodiment. Surface view of the IC card case according to the second embodiment Back view of the IC card case according to the second embodiment Sectional view along the VIII-VIII line shown in FIG. The figure which shows the circuit wiring with which the circuit board shown in FIG. 7 is provided.

(First embodiment)
FIG. 1 is a perspective view of the mobile terminal case according to the first embodiment, and FIG. 2 is a cross-sectional view along the line II-II shown in FIG.

  The mobile terminal case 1 is used for housing a mobile terminal 6 such as a smartphone inside to prevent damage to the mobile terminal 6. The mobile terminal 6 has a substantially rectangular flat plate shape, and the mobile terminal case 1 has a box shape corresponding to the mobile terminal 6. The portable terminal 6 can communicate using radio waves of a frequency of 300 MHz or more, such as an 800 MHz band and a 2 GHz band.

  The mobile terminal case 1 includes a flat plate portion 2 that covers the back surface of the mobile terminal 6, a side wall portion 3 that is connected to an outer peripheral edge of the flat plate portion and covers the side surface of the mobile terminal 6, and is attached to an outer surface of the flat plate portion 2. And a circuit board 4 to be combined. The flat plate portion 2 and the side wall portion 3 are integrally formed of a material such as a resin that transmits radio waves. A plurality of electronic components to be described later are mounted on the outer surface side of the circuit board 4, and a transparent resin layer 5 is provided to protect these electronic components.

  FIG. 3 is a plan view of a circuit board provided in the mobile terminal case according to the first embodiment, FIG. 4 is a rear view of the circuit board shown in FIG. 3, and FIG. FIG. 4 is a circuit diagram of a circuit configured on a circuit board included in the mobile terminal case according to the embodiment. 3 and 4, a solid line on the substrate 7 represents a printed wiring, a black square represents a pad, and a white square represents an electronic component mounted on the pad. The surface shown in FIG. 3 is the surface on the outer surface side of the mobile terminal case, and the surface shown in FIG. 4 is the surface on the mobile terminal side. Hereinafter, the surface of the substrate 7 illustrated in FIG. 3 is referred to as “front surface”, and the surface of the substrate 7 illustrated in FIG. 4 is referred to as “back surface”.

  The circuit board 4 is a printed wiring board, and includes a substantially rectangular board 7, a plurality of electronic components 9 mounted on the front surface of the board 7, a plurality of printed wirings 8 formed on the front and back surfaces of the board 7, 17, 18 and 19, and through holes (not shown) penetrating the substrate 7 and connecting printed wiring on the front and back.

  An arbitrary design is formed on the surface of the substrate 7 by a plurality of printed wirings 8 and electronic components 9. In the example of FIG. 3, a railway route map is drawn using the printed wiring 8 and the electronic components 9. The printed wiring 8 represents a railway route, and the pads and the electronic components 9 represent stations. The design provided on the surface of the substrate 7 is intended to decorate a case for a portable terminal. Therefore, the design is not limited to the route map, but may be any design that can be expressed using the printed wiring 8 and the electronic component 9, and may be configured by combining arbitrary figures and characters.

  In addition, an LED 16 is mounted as one of the electronic components at substantially the center of the surface of the substrate 7. The electronic components 9 other than the LED 16 are a resistor, a diode, a capacitor, and the like. ing. Hereinafter, the configuration of the circuit formed on the substrate 7 of the circuit substrate 4 will be described.

  As shown in FIGS. 4 and 5, on the circuit board 4, a pair of antennas 10a and 10b, a ground 14, and a pair of booster circuits 15a and 15b are configured.

  The antennas 10 a and 10 b are provided along a part of the outer peripheral edge of the substrate 7. More specifically, the antenna 10a includes a first antenna section 11a extending along the short side 20a of the substrate 7 and a second antenna section extending along the long side 21a of the substrate 7 and connected to the first antenna section 11a. 12a, and a third antenna section 13a extending along the short side 20b of the substrate 7 and connected to the second antenna section 12a. Similarly, the antenna 10b includes a first antenna portion 11b extending along the short side 20b of the substrate 7, a second antenna portion 12b extending along the long side 21a of the substrate 7 and connected to the first antenna portion 11b. The third antenna unit 13b extends along the short side 20a of the substrate 7 and is connected to the second antenna unit 12b.

The ground 14 is provided substantially at the center of the substrate 7 so as to extend in the longitudinal direction of the substrate 7. The ground 14 is preferably arranged away from the booster circuits 15a and 15b, which are high-frequency circuits, and is also arranged away from the antennas 10a and 10b from the viewpoint of radio wave reception efficiency. Therefore, in the present embodiment, a part of the antennas 10a and 10b is arranged on the long side 21a side, the booster circuits 15a and 15b are arranged on the long side 21b side, and the ground 14 is arranged in the center of the substrate 7. so as to ensure the distance ground 14 and the booster circuit 15a and 15 b, the distance between the ground 14 and the antenna 10a and 10b. In addition, since the ground 14 also functions as a part of the antenna, it is preferable to make the ground 14 a planar shape as shown in FIG.

  The booster circuits 15a and 15b are configured by connecting a diode and a capacitor mounted on the surface of the substrate 7 with the printed wiring 8 on the front surface of the substrate 7, the printed wiring 19 on the back surface of the substrate 7, and through holes (not shown). Charge pump. The booster circuit 15a is connected to the antenna 10a and to the ground 14 via a printed wiring 17 extending along the long side 21b of the substrate 7. Similarly, the booster circuit 15b is connected to the antenna 10b and also to the ground 14 via the printed wiring 17 extending along the long side 21b of the substrate 7. The booster circuits 15a and 15b are connected in parallel to the anode of the LED 16 via the wiring 18 and a through hole (not shown). The cathode of the LED 16 is connected to the ground 14 on the back surface of the substrate 7 via a through hole (not shown).

  Here, the wiring lengths of the printed wirings 8 and 19 for connecting the electronic components constituting the booster circuits 15a and 15b are all 1 mm or more. In designing a high-frequency circuit, it is general to reduce the length of wiring between electronic components as short as possible (for example, 0.5 mm or less) in order to reduce the influence of noise. On the other hand, in the present embodiment, the wiring lengths of the printed wirings 8 and 19 for connecting the electronic components constituting the booster circuits 15a and 15b are set to 1 mm or more, so that radio waves can be received even at these portions.

  In the present embodiment, as shown in FIG. 5, the booster circuits 15a and 15b are each configured using six diodes and six capacitors. It is preferable that the number of stages of the booster circuits 15a and 15b (charge pump) is four or more and six or less. When the number of stages of the booster circuits 15a and 15b is less than four, the voltage for causing the LED 16 to emit light decreases, and the light emission intensity decreases. The number of stages of the booster circuits 15a and 15b may exceed six, but in this case, the voltage increases but the current does not increase, so that the light emission intensity is not further improved.

  In the present embodiment, a plurality of electronic components 9 are dispersed and mounted on the surface of the substrate 7 for the purpose of decoration, and these dispersed electronic components 9 are connected to the back surface of the substrate 7 by the printed wiring 19 which is routed. Thus, since the booster circuits 15a and 15b are configured, it is easy to increase the length of the wiring connecting the adjacent electronic components to 1 mm or more. Further, since the electronic components 9 are not necessarily formed of the electronic components intensively mounted in one place but are arranged in an appropriately dispersed manner, the electronic components 9 forming the boost circuits 15a and 15b are appropriately arranged. Can be used as part of the design to prevent the design from being degraded.

  Antennas of mobile terminals such as smartphones are arranged at the top and bottom of the housing. Therefore, the first antenna units 11a and 11b are provided at positions corresponding to the upper and lower parts of the portable terminal, respectively. Further, it is preferable that the antennas 10a and 10b have a certain length so that the radio waves can be received efficiently. Therefore, the first antenna unit 11a disposed near the short side 20a of the substrate 7 is routed to the short side 20b side of the substrate 7 via the second antenna unit 12a and the third antenna unit 13a, and the short side of the substrate 7 The length of the antennas 10a and 10b is ensured by routing the first antenna unit 11b disposed near 20b to the short side 20a side of the substrate 7 via the second antenna unit 12b and the third antenna unit 13b. I have. By configuring the antennas 10a and 10b in this way, it is possible to efficiently receive radio waves emitted from the mobile terminal.

  When the mobile terminal emits a radio wave in a state where the mobile terminal is accommodated in the mobile terminal case according to the present embodiment, a part of the radio wave is received by the antennas 10a and 10b. The power received by the antennas 10a and 10b is boosted by the boosters 15a and 15b, and then causes the LED 16 to emit light. In the case for the mobile terminal according to the present embodiment, the configuration of the above-described antennas 10a and 10b allows the LED 16 to emit light using radio waves of a frequency band of 300 MHz or more used for the mobile phone. .

  Further, a printed wiring 19 for connecting the components of the booster circuits 15a and 15b is provided on the back surface of the substrate 7, and the printed wiring 19 can also receive radio waves, so that the LED 16 can emit light more brightly.

  Further, in the present embodiment, the LED 16 can also emit light brightly by providing the pair of antennas 10a and 10b and the pair of booster circuits 15a and 15b.

  Since the 800 MHz band and 2 GHz band radio waves emitted by the portable terminal are weak, it has been conventionally difficult to cause the light emitting element to emit light using radio waves in these frequency bands. In the present embodiment, by adopting the above circuit configuration, radio waves can be efficiently received and used as electric power, so that the LED 16 can emit light only with the radio waves emitted from the portable terminal. Therefore, according to the present embodiment, it is possible to realize a mobile terminal case having excellent decorativeness.

(Second embodiment)
FIG. 6 is a front view of the IC card case according to the second embodiment, and FIG. 7 is a rear view of the IC card case according to the second embodiment. FIG. 8 is a sectional view taken along the line VIII-VIII shown in FIG.

The IC card case 30 accommodates an IC card 26 such as an IC commuter pass or an IC ticket, and is used for the purpose of preventing the IC card 26 from being lost or damaged. The IC card case 30 has a substantially rectangular flat plate shape. The IC card 26 is capable of communicating using, for example, a 13.56 MHz radio wave of NFC (Near Field Communication) standard.

  The IC card case 30 includes a substantially rectangular circuit board 24, a frame member 22, and a spacer member 23.

  The circuit board 24 is a printed wiring board configured similarly to the circuit board 4 in the first embodiment, and includes a board 7, a plurality of electronic components 9 mounted on the surface of the board 7, It has a plurality of printed wirings 8, 17, 18 and 19 formed on the back surface, and through holes (not shown) that penetrate through the substrate 7 and connect the printed wirings on the front and back. Also in the present embodiment, a railway route map is drawn on the substrate 7 using the printed wiring 8 and the electronic components 9, the printed wiring 8 represents the railway route, and a pad (black square). And the electronic component 9 (open square) represent a station. The LED 16 is mounted at substantially the center of the substrate 7. Also in the present embodiment, the design applied to the surface of the circuit board 24 is not particularly limited, as long as it can be configured by etching the substrate 7 and mounting the electronic components 9. On the surface of the circuit board 24, a transparent resin layer (not shown) for protecting the electronic components 9 and the wirings 8 is provided.

The frame member 22 is a frame-shaped member extending along the peripheral edge of the circuit board 24, and is provided to face the back surface of the circuit board 24 at a predetermined interval. The central portion of the frame member 2 2, a window portion 27 for exposing the housed IC card is provided. Note that a plurality of pads for mounting components are provided on the surface of the frame member 22, and this uses a pattern provided on the circuit board as a design. Since the decoration of the surface of the frame member 22 can be formed by etching the metal film on the substrate, any decoration can be applied to the surface of the frame member 22.

The spacer member 23 is a U-shaped member extending along the long side 21a, the short side 20a, and the long side 21b of the circuit board 24. The spacer member 23 is sandwiched between the circuit board 24 and the frame member 22 to maintain a constant clearance between the circuit board 24 and the frame member 22. The clearance between the circuit board 2 4 and the frame member 22 is set larger than the thickness of the IC card accommodating.

In the present embodiment, the frame member 22, the spacer member 23, and the substrate 7 of the circuit board 24 are all formed of the same material (for example, a glass epoxy substrate). The frame member 22 and the frame member 22 are integrated in this order by overlapping and press bonding. An adhesive may be used for bonding the circuit board 24, the spacer member 23, and the frame member 22 together. By interposing the spacer member 23 between the frame member 22 and the circuit board 24, a storage portion capable of inserting and housing the IC card 26 from the short side 20b side of the circuit board 24 is formed.

  Further, the frame member 22 and the circuit board 24 are provided with openings 28 and 29 at positions overlapping each other. The openings 28 and 29 are for attaching an annular member such as a carapina or a key ring. By attaching these annular members to the openings 28 and 29 while the IC card 26 is stored in the IC card case 30, the IC card 26 can be prevented from dropping from the IC card case 30. A strap, a holder, or the like may be connected to the annular members attached to the openings 28 and 29.

  FIG. 9 is a diagram showing circuit wiring provided on the circuit board shown in FIG. Note that a protective layer made of an insulating resin or the like is provided on the circuit wiring, but the illustration of the protective layer is omitted in FIG.

  The same circuit as that shown in the circuit diagram of FIG. 5 is formed on the circuit board 24 according to the present embodiment in order to convert radio waves into electric power and cause the LED 16 to emit light. As shown in FIG. 9, a pair of antennas 10a and 10b provided on the circuit board 24, a ground 14, and a pair of booster circuits 15a and 15b are also configured in the same manner as in the first embodiment shown in FIG. ing.

  That is, similarly to the first embodiment, the antennas 10a and 10b are formed so as to extend along three sides of the outer peripheral edge of the substrate 7, namely, the short side 20a, the long side 21a, and the short side 20a. More specifically, the antenna 10a includes a first antenna portion 11a extending along the short side 20a of the substrate 7 and a second antenna extending along the long side 21a of the substrate 7 and connected to the first antenna portion 11a. The third antenna unit 13a extends along the short side 20b of the substrate 7 and is connected to the second antenna unit 12a. The antenna 10b includes a first antenna portion 11b extending along the short side 20b of the substrate 7, a second antenna portion 12b extending along the long side 21a of the substrate 7 and connected to the first antenna portion 11b. The third antenna unit 13b extends along the short side 20a of the substrate 7 and is connected to the second antenna unit 12b. The ground 14 is provided at substantially the center of the substrate 7 so as to extend in the longitudinal direction of the substrate 7. Similarly to the first embodiment, the booster circuits 15a and 15b are composed of electronic components 9 on the front surface of the substrate 7, wirings 19 on the back surface of the substrate 7, and through holes (not shown). Are connected to the ground 14 via the wiring 18 and to the LED 16 via the wiring 18.

  By arranging the antennas 10a and 10b and the ground 14 in this manner, radio waves can be efficiently received when the IC card is used for the same reason as the circuit board 4 according to the first embodiment. Further, by setting the length of each of the printed wirings 8 and 19 for connecting the electronic components constituting the booster circuits 15a and 15b to 1 mm or more, it is possible to receive radio waves even in this portion, and furthermore to improve the receiving efficiency. improves.

  As described above, in the present embodiment, by adopting the above-described circuit configuration, radio waves can be efficiently received and used as electric power, so that the LED 16 can emit light only with the radio waves when the IC card is used. . Therefore, according to the present embodiment, an IC card case excellent in decorativeness can be realized.

  In each of the above embodiments, the case for the mobile terminal in which the surface of the circuit board is decorated with the printed wiring and the electronic components has been described. Instead of configuring the design using the printed wiring and the electronic components, The decoration may be provided by providing another member that covers the surface of the substrate. Even in this case, the LED provided in the mobile terminal case can emit light by the above-described circuit configuration.

  Further, in each of the above embodiments, the example in which the antenna is provided along the pair of short sides of the substantially rectangular circuit board and the one long side sandwiched therebetween has been described, but one of the two antennas or Both may be provided along a pair of opposing sides of the circuit board and one side sandwiched therebetween. That is, when the circuit board is substantially rectangular, the antenna may be provided along a pair of short sides of the circuit board and one long side sandwiched therebetween. Further, the circuit board may be square.

  INDUSTRIAL APPLICABILITY The present invention can be used as a storage case for articles using radio waves, such as mobile terminals such as smartphones and IC cards.

DESCRIPTION OF SYMBOLS 1 Mobile terminal case 2 Flat plate part 3 Side wall part 4 Circuit board 6 Smartphone 7 Substrate 8 Printed wiring 9 Electronic components 10a, 10b Antennas 11a, 11b First antenna parts 12a, 12b Second antenna parts 13a, 13b Third antenna part 14 Ground 15a, 15b Boost circuit 16 LED
17 Printed wiring 18 Printed wiring 19 Printed wiring 20a, 20b Short side 21a, 21b Long side 22 Frame member 23 Spacer member 24 Circuit board 26 IC card 27 Window 30 IC card case

Claims (6)

A storage case for storing an object to be stored,
A circuit board having a light emitting element,
The circuit board,
A substantially rectangular substrate,
An antenna provided on the back surface of the substrate and extending along a part of an outer peripheral edge of the substrate;
A ground provided on the back surface of the substrate,
A booster circuit electrically connected to the antenna and the ground,
The light-emitting element is provided on a front surface side of the substrate, and is electrically connected to the booster circuit and the ground.
The antenna is
A first antenna unit extending along a first side which is one of the four sides of the substrate;
A second antenna unit extending along a second side that is one of two sides adjacent to the first side and connected to the first antenna unit;
A storage case that extends along a third side opposite to the first side and includes the second antenna unit and a third antenna unit connected to the booster circuit. The booster circuit includes a plurality of electronic components mounted on the surface of the substrate, and a plurality of wirings connecting the electronic components,
At least a part of the wiring is provided on a back surface of the substrate,
2. The storage case according to claim 1, wherein each of the wirings connecting the adjacent electronic components has a wiring length of 1 mm or more. 3.   The storage case according to claim 1, further comprising a pair of the antennas and a pair of the boost circuits for one light emitting element. The booster circuit is provided at a position along a fourth side opposite to the second side,
The storage case according to any one of claims 1 to 3, wherein the ground is disposed at a central portion of the substrate. A case body that has a substantially rectangular flat plate shape and houses a portable terminal that can communicate using radio waves of a frequency of 300 MHz or more,
The case body is
A flat plate portion covering the back surface of the mobile terminal,
A side wall portion that covers a side surface of the portable terminal,
The storage case according to claim 1, wherein the circuit board is provided on an outer surface of the flat plate portion. A frame member arranged to face the back surface of the circuit board and having a window in the center,
A spacer member is provided between the substrate and the frame member, and includes a spacer member that maintains a constant interval between the substrate and the frame member.
The substrate, the frame member and the spacer member are made of the same material,
The storage case according to claim 1, wherein a storage portion capable of storing an IC card is formed between the substrate and the frame member.