JP2014170830A - Electromagnetic wave shielding structure, electronic apparatus including the same, and electromagnetic wave shielding method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electromagnetic wave shielding structure capable of shielding an electromagnetic wave and supporting a display member, while suppressing the number of components.SOLUTION: An electromagnetic wave shielding structure 1 includes: a mounting board 2 mounting an electronic component 9; an electromagnetic wave shielding part 3 provided on the mounting board 2 for shielding an electromagnetic wave generated by the electronic component 9; a display member 4 displaying information; and a support part 5 supporting the display member 4 and covering the electromagnetic wave shielding part 3.

Description

  The present invention relates to an electromagnetic wave shielding structure, an electronic device including the same, and an electromagnetic wave shielding method.

  In various electronic devices such as mobile phone terminals, various communication terminals, game machines, tablet PCs, etc., for the purpose of protecting mounting parts provided on the board constituting the electric equipment from external impacts. May be provided with shield parts.

For example, a substrate, an electronic component mounted on the substrate, a frame body standing upright from the substrate so as to cover the electronic component and opening in a vertical direction, a lid covering an opening portion of the frame body, a frame body, There has been proposed a circuit board including a shield cover that covers a lid and a display device that can display information (see Patent Document 1 below).
In such a circuit board, the frame and the lid constitute a shield component that protects the electronic component. Therefore, the frame and the lid can protect the electronic component from external impact, protect the electronic component from noise radiated from the device, and shield the noise radiated from the electronic component. On the other hand, the shield cover supports the display device.

JP 2008-243908 A

  However, the circuit board described in Patent Document 1 has a problem in that the number of components increases because the frame and lid that protect the electronic components and the shield cover that supports the display device are configured as separate members. .

  The present invention has been made in order to solve the above-described problems, and is capable of shielding an electromagnetic wave while suppressing the number of components, and also supports an electromagnetic wave shielding structure capable of supporting a display member, and an electron equipped with the same An apparatus and a method for shielding electromagnetic waves are provided.

The present invention employs the following means in order to solve the above problems.
That is, the electromagnetic wave shielding structure according to the present invention includes a mounting board on which electronic components are mounted, an electromagnetic wave shielding portion provided on the mounting board to shield electromagnetic waves generated by the electronic components, and a display member that displays information. And a support part that supports the display member and covers the electromagnetic wave shielding part.

  In addition, an electronic apparatus according to the present invention includes the electromagnetic wave shielding structure described above.

  The electromagnetic wave shielding method according to the present invention includes an electromagnetic wave shielding portion for shielding an electromagnetic wave generated by the electronic component on a mounting substrate on which the electronic component is mounted, covers the electromagnetic wave shielding portion, and displays information. A support portion for supporting the display member is provided.

  According to the electromagnetic wave shielding structure, the electronic device including the electromagnetic wave shielding method, and the electromagnetic wave shielding method according to the present invention, the electromagnetic wave can be shielded and the display member can be supported while suppressing the number of components.

It is sectional drawing which shows the minimum structure of the shielding structure of the electromagnetic wave which concerns on 1st embodiment of this invention. It is a front view of the electronic device which concerns on 2nd embodiment of this invention. It is sectional drawing of the principal part of the electronic device which concerns on 2nd embodiment of this invention. It is the decomposition | disassembly expansion sectional view which decomposed | disassembled the A section of FIG. FIG. 4 is an enlarged sectional view of a part A in FIG. 3.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an electromagnetic wave shielding structure, an electronic apparatus including the electromagnetic wave shielding structure, and an electromagnetic wave shielding method according to the invention will be described with reference to the drawings. However, the present invention is not limited only to these examples.

(First embodiment)
FIG. 1 is a diagram illustrating a minimum configuration of an electromagnetic wave shielding structure and an electromagnetic wave shielding method according to the present embodiment.

  As shown in FIG. 1, an electromagnetic wave shielding structure 1 includes a mounting substrate 2 on which an electronic component 9 is mounted, an electromagnetic wave shielding portion 3 provided on the mounting substrate 2 to shield an electromagnetic wave generated by the electronic component 9, and information It is only necessary to include at least the display member 4 that displays the image and the support portion 5 that supports the display member 4 and covers the electromagnetic wave shielding portion 3.

  Further, the electromagnetic wave shielding method is to provide the mounting substrate 2 with the electromagnetic wave shielding part 3, cover the electromagnetic wave shielding part 3, and provide the support part 5 that supports the display member 4.

  According to the electromagnetic wave shielding structure 1 and the electromagnetic wave shielding method thus configured, the electromagnetic wave can be shielded and the display member 4 can be supported while suppressing the number of components.

(Second embodiment)
Hereinafter, the electronic apparatus according to the second embodiment of the present invention will be described mainly using FIGS. 2 to 5 by taking the mobile phone 6 as an example of the electronic apparatus.
In this embodiment, the same members as those used in the above-described embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As shown in FIGS. 2 and 3, the mobile phone 6 includes a substantially box-shaped case 10 having an upper opening, a battery 12 and an electromagnetic wave shielding structure 11 provided in the case 10, and an inside of the case 10. A frame 13 provided along the screen and a screen 14 supported by the frame 13 and closing the opening of the case 10 are provided.
Here, for the sake of convenience, the upper side of the drawing shown in FIG. 3 is referred to as the upper side, and the lower side of the drawing is referred to as the lower side.

  The case 10 includes a bottom case portion 10A that constitutes a bottom surface, and a side case portion 10B that is erected from the bottom case portion 10A.

  The electromagnetic shielding structure 11 includes a mounting substrate 21 provided in the case 10, an electromagnetic shielding unit 31 provided on the mounting substrate 21 for shielding electromagnetic waves generated by the electronic component 91 </ b> A provided on the mounting substrate 21, and A display member 41 that displays information and a support unit 51 that supports the display member 41 and covers the electromagnetic wave shielding unit 31 are provided.

  Electronic components 91A and 91B such as connectors and switches are provided on the upper and lower surfaces of the mounting substrate 21, respectively.

  The electromagnetic wave shielding portion 31 includes a standing wall portion 32 that is erected upward from the vicinity of the electronic component 91 </ b> A on the upper surface of the mounting substrate 21, and a bent wall portion that is bent from the upper end of the standing wall portion 32. 33.

  The standing wall portion 32 is separated from the outer edge of the electronic component 91A provided on the upper surface of the mounting substrate 21, and is provided over the circumferential direction of the electronic component 91A so as to surround the electronic component 91A. In the present embodiment, the standing wall portion 32 is provided from the upper surface of the mounting substrate 21 toward the display member 41 so as to face each other with the electronic component 91 </ b> A interposed therebetween. Further, the standing wall portion 32 can be elastically deformed.

  The bent wall portion 33 is bent from the upper end of the standing wall portion 32 toward the electronic component 91A side. The end of the bent wall 33 forms an opening 34 that opens in the up-down direction. The opening 34 is disposed above the electronic component 91A.

  The support part 51 includes a contact wall part 52 disposed in contact with the standing wall part 32 of the electromagnetic wave shielding part 31 and a support wall part 53 bent from the upper end of the contact wall part 52.

  The contact wall 52 is disposed in the vertical direction along the surface opposite to the electronic component 91 </ b> A with respect to the standing wall 32 of the electromagnetic wave shielding unit 31. Further, the contact wall portion 52 can be elastically deformed.

  The support wall 53 is disposed on the lower surface of the display member 41. The support wall portion 53 and the contact wall portion 52 are disposed so as to cover the opening portion 34 formed by the bent wall portion 33 of the electromagnetic wave shielding portion 31. That is, the opening 34 is closed by the support wall 53 and the contact wall 52.

  The display member 41 displays information such as characters and images, and is formed in a substantially plate shape. Examples of the display member 41 include liquid crystal, electronic paper, organic electroluminescence, and the like.

  Next, a method for arranging the support portion 51 on the mounting substrate 21 on which the electronic components 91A and 91B are provided will be described.

  As shown in FIG. 4, the support portion 51 is moved downward from above the electromagnetic wave shielding portion 31, and the contact wall portion 52 of the support portion 51 is brought into contact with the standing wall portion 32 of the electromagnetic wave shielding portion 31. Arrange so that. Here, the standing wall portion 32 and the contact wall portion 52 are elastically deformable. Therefore, as shown in FIG. 5, when the contact wall portion 52 comes into contact with the standing wall portion 32, the contact wall portion disposed farther from the electronic component 91 </ b> A among the standing wall portion 32 and the contact wall portion 52. 52 presses the standing wall 32 toward the electronic component 91A.

  In other words, the contact wall portion 52 disposed farther from the electronic component 91A among the standing wall portion 32 and the contact wall portion 52 passes the standing wall portion 32 disposed so as to surround the electronic component 91A in the circumferential direction. Since the pressure is applied toward the electronic component 91 </ b> A, the contact wall portion 52 and the standing wall portion 32 are arranged in close contact with each other.

  In the mobile phone 6 configured as described above, the standing wall portion 32 of the electromagnetic wave shielding portion 31 is disposed so as to surround the electronic component 91 </ b> A provided on the mounting substrate 21. Further, the standing wall portion 32 of the electromagnetic wave shielding portion 31, the contact wall portion 52 of the support portion 51, and the support wall portion 53 are openings formed by bent wall portions 33 bent from the upper end of the standing wall portion 32. It arrange | positions so that the part 34 may be obstruct | occluded. Therefore, since the opening 34 arranged above the electronic component 91A is closed, the electromagnetic wave generated from the electronic component 91A can be shielded to prevent noise. Furthermore, for example, the electronic component 91A can be protected from an impact when the mobile phone 6 falls.

  Here, since the contact wall part 52 presses the standing wall part 32 so that the two come into close contact with each other, the electromagnetic wave can be reliably shielded.

  The support wall portion 53 of the support portion 51 is disposed along the lower surface of the display member 41. The support wall 53 is supported by the bent wall 33 through the contact wall 52. Therefore, the support part 51 supported by the electromagnetic wave shielding part 31 can support the display member 41.

Thus, the support part 51 has the role which shields the electromagnetic waves, and the role which supports the display member 41. Therefore, the number of parts can be suppressed by the support part 51 playing both roles, compared with the case where the members playing the respective roles are provided separately.
Further, when a member for shielding electromagnetic waves is provided above the electronic component 91A and a member for supporting the display member 41 is provided above the member, the cellular phone 6 needs to have a thickness equivalent to these two members in the vertical direction. It is said. On the other hand, in this embodiment, since the support part 51 plays the role of these two members, the thickness of the mobile phone 6 can be reduced and the mobile phone 6 can be made thinner and more compact.

  Further, as shown by arrows in FIG. 3, the heat generated from the electronic component 91A is bent in the vicinity of the electronic component 91A, the standing wall portion 32 connected to the bending wall portion 33, Heat can be radiated to the entire mobile phone 6 through the support portion 51 disposed in contact with the wall portion 32 and disposed on the lower surface of the display member 41. Therefore, since the heat generated from the electronic component 91A can be effectively radiated, the mobile phone 6 can be prevented from generating heat locally.

  Note that the operation procedure shown in the above-described embodiment, various shapes and combinations of the constituent members, and the like are examples, and various modifications can be made based on design requirements and the like without departing from the gist of the present invention.

  In the above-described embodiment, the contact wall portion 52 disposed farther from the electronic component 91A among the standing wall portion 32 and the contact wall portion 52 presses the standing wall portion 32 toward the electronic component 91A side. Thus, both members are in close contact. However, the present invention is not limited to this, and as the configuration in which the standing wall 32 is disposed farther from the electronic component 91 </ b> A among the standing wall 32 and the contact wall 52, the standing wall 32 is the contact wall 52. The structure which presses toward the electronic component 91A side may be sufficient. Even in this case, since the standing wall portion 32 and the contact wall portion 52 are in close contact with each other, the electromagnetic wave generated from the electronic component 91A can be reliably shielded.

  In addition, a concave portion (not shown) is provided on one of the support portion 51 and the electromagnetic wave shielding portion 31, and a convex portion (not shown) fitted to the concave portion is provided on the other of the support portion 51 and the electromagnetic wave shielding portion 31. There may be. Even in this case, the electromagnetic wave generated from the electronic component 91A can be reliably shielded because the electromagnetic wave shielding part 31 and the support part 51 are brought into close contact with each other by fitting the concave part and the convex part.

  In addition, even if the contact wall portion 52 does not press the standing wall portion 32 as described above, or the support portion 51 and the electromagnetic wave shielding portion 31 are not in a fitting relationship, the support portion 51 is the electromagnetic wave shielding portion. 31 may be covered. Thereby, the electromagnetic wave can be shielded and the display member 41 can be supported while suppressing the number of components.

  Moreover, the electromagnetic wave shielding part 31 and the support part 51 may be integrated. For example, the mobile phone 6 may have a configuration in which the lower end of the contact wall portion 52 of the support portion 51 is in contact with the upper surface of the mounting substrate 21 without having the electromagnetic wave shielding portion 31. In this case, the portion of the support portion 51 disposed above the standing wall portion 32 and the electronic component 91A serves as an electromagnetic wave shielding portion provided on the mounting substrate 21 to shield the electromagnetic wave generated by the electronic component 91A. It can function and shield electromagnetic waves.

  In the above-described embodiment, the mobile phone 6 has been described as an example of the electronic device. However, the present invention is not limited to this, and a smartphone, a game device, a tablet PC (Personal Computer), and a notebook PC (Personal). The present invention can also be applied to electronic devices such as a computer (Computer) and a PDA (Personal Data Assistant).

DESCRIPTION OF SYMBOLS 1,11 ... Shielding structure 2,21 ... Mounting board | substrate 3,31 ... Electromagnetic wave shielding part 4,41 ... Display member 5,51 ... Supporting part 9, 91A, 91B ... Electronic component 6 ... Cell-phone 32 ... Erecting wall part 52 ... Contact wall 53 ... Support wall

Claims (7)

A mounting board for mounting electronic components;
An electromagnetic shielding part provided on the mounting substrate to shield electromagnetic waves generated by the electronic component;
A display member for displaying information;
An electromagnetic wave shielding structure comprising: a support portion that supports the display member and covers the electromagnetic wave shielding portion. The electromagnetic wave shielding structure according to claim 1,
The electromagnetic wave shielding portion is erected from the mounting substrate toward the display member side, and has an erected wall portion disposed so as to face the electronic component.
The electromagnetic wave shielding structure, wherein the support portion includes a contact wall portion disposed in contact with the standing wall portion. The electromagnetic wave shielding structure according to claim 2,
One of the standing wall portion and the contact wall portion that is arranged farther from the electronic component presses the other of the standing wall portion and the contact wall portion toward the electronic component side. Characteristic electromagnetic shielding structure. In the electromagnetic wave shielding structure according to any one of claims 1 to 3,
The electromagnetic wave shielding structure, wherein the support part has a support wall part arranged along the display member. In the electromagnetic wave shielding structure according to any one of claims 1 to 4,
The electromagnetic wave shielding structure, wherein the electromagnetic wave shielding part and the support part are integrated.   An electronic apparatus comprising the electromagnetic wave shielding structure according to any one of claims 1 to 5. On the mounting substrate for mounting the electronic component, an electromagnetic wave shielding portion for shielding the electromagnetic wave generated by the electronic component is provided,
A method for shielding electromagnetic waves, characterized by comprising a support portion for covering the electromagnetic wave shielding portion and supporting a display member for displaying information.

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