Patent Publication Number: US-2022232693-A1

Title: Electronic equipment

Description:
TECHNICAL FIELD 
     The present invention relates to electronic equipment including a housing. 
     BACKGROUND ART 
     Some pieces of electronic equipment such as game apparatuses and personal computers are configured such that option equipment can be attached to the electronic equipment in order to improve performance or to expand functions. (See PTL 1) 
     CITATION LIST 
     Patent Literature 
     [PTL 1] Japanese Patent Laid-open No. 2010-244214 
     SUMMARY 
     Technical Problems 
     In general, attachment of option equipment requires an external housing of electronic equipment to be disassembled to expose a main body substrate. Thus, in the related art, attachment of the option equipment is not always easy. 
     Additionally, some types of option equipment generate electromagnetic noise. Attachment of such option equipment to the main body may affect other electronic components within the main body or electronic equipment outside the main body. The option equipment and the main body may often be provided by different manufacturers, and the manufacturer of the main body fails to fully recognize electromagnetic noise from the option equipment. Thus, sufficient measures are desirably taken against electromagnetic noise from the option equipment. 
     In view of the above-described problems, an object of the present invention is to provide electronic equipment that facilitates installation and removal of the option equipment, while suppressing the adverse effect of electromagnetic noise generated by the option equipment. 
     Solution to Problems 
     To solve the above problems, electronic equipment according to the present invention is electronic equipment including a printed circuit board, and a shield member covering the printed circuit board with at least a part of the printed circuit board exposed from the shield member, in which the shield member includes a recess, and a region of the printed circuit board exposed from the shield member is located at a bottom portion of the recess. 
     Additionally, according to an aspect of the present invention, electronic equipment includes a printed circuit board, a shield member covering the printed circuit board with at least a part of the printed circuit board exposed from the shield member, and a case housing the printed circuit board and the shield member. The shield member includes a recess, a region of the printed circuit board exposed from the shield member is located at a bottom portion of the recess. Further, the case includes an opening provided at a position corresponding to the region of the printed circuit board exposed from the shield member and a lid for closing the opening. One surface of the lid is provided with a shield surface for inhibiting external electromagnetic radiation. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a perspective view of electronic equipment according to the present embodiment. 
         FIG. 2  is an exploded perspective view of an exhaust port provided at an upper portion of the electronic equipment according to the present embodiment. 
         FIG. 3  is a perspective view illustrating a unit including a cooling fan and an antenna attachment member according to the present embodiment. 
         FIG. 4  is a side view of the unit in a case where an antenna substrate is attached to the antenna attachment member according to the present embodiment. 
         FIG. 5  is an exploded perspective view of the electronic equipment, in which an upward direction corresponds to a Z 2  direction depicted in  FIG. 1 . 
         FIG. 6  is a front view of an option equipment attachment portion and a lower shield member provided on a bottom surface side of the electronic equipment according to the present embodiment. 
         FIG. 7  is a front view of a cover portion attached to the option equipment attachment portion according to the present embodiment. 
         FIG. 8  is a horizontal cross-sectional view of the electronic equipment, in which the upward direction corresponds to the Z 2  direction depicted in  FIG. 1 . 
         FIG. 9  is an enlarged vertical cross-sectional view of the electronic equipment, in which the upward direction corresponds to the Z 2  direction depicted in  FIG. 1 . 
         FIG. 10  is a front view of a shielding member according to the present embodiment. 
         FIG. 11  is a front view of a main printed circuit board according to the present embodiment. 
         FIG. 12  is a front view of a shield member according to the present embodiment. 
         FIG. 13  is a cross-sectional view of the main printed circuit board to which a shield is attached in the present embodiment. 
         FIG. 14  is a diagram depicting the shield member according to the present embodiment with an upper cover removed, as viewed in a Z 1  direction. 
         FIG. 15  is a cross-sectional view of the electronic equipment of the present embodiment, in which a light emission region is viewed in a Y 2  direction. 
         FIG. 16  is a diagram depicting a light shielding member for the light emission region in the present embodiment. 
         FIG. 17  is a flowchart illustrating processing for automatic mounting in the present embodiment. 
     
    
    
     DESCRIPTION OF EMBODIMENT 
     Electronic equipment according to an embodiment will be described. The electronic equipment can be applied to, for example, a game machine, a development machine for executing various programs being developed (for example, game programs), and an information processing apparatus other than games (for example, server apparatus). 
       FIG. 1  is a perspective view of the electronic equipment according to the present embodiment. Directions labeled X 1  and X 2  in  FIG. 1  are hereinafter respectively referred to as rightward and leftward directions, and directions labeled Y 1  and Y 2  in  FIG. 1  are hereinafter respectively referred to as forward and rearward directions. Additionally, directions labeled Z 1  and Z 2  are hereinafter referred to as upward and downward directions. These directions are used to describe relative positional relations among elements (components, members, and portions) of electronic equipment  10  and are not intended to specify the orientations of the elements while the electronic equipment  10  is in use. For example, the electronic equipment  10  may be used in a horizontal orientation depicted in  FIG. 1  or in a vertical orientation depicted. Additionally, the electronic equipment  10  may be configured such that the electronic equipment  10  can be used in an orientation opposite to the orientation depicted in  FIG. 1 . 
     While the electronic equipment  10  is in use, input devices such as a game controller and a keyboard, a display, and the like are connected to the electronic equipment  10 . The electronic equipment  10  loads a game program recorded in an optical disc and a game program acquired via a network. The electronic equipment  10  executes a game program on the basis of signals input from the input device, and displays game images as processing results. 
     The electronic equipment  10  includes a main printed circuit board  40  (see  FIG. 5 ) on which integrated circuits such as a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), and a RAM (Random Access Memory) are mounted. The main printed circuit board  40  is disposed in a horizontal direction, that is, parallel to a forward-rearward direction and a lateral direction. As depicted in an exploded perspective view in  FIG. 5  and in a cross-sectional view in  FIG. 13 , an upper side and a lower side of the main printed circuit board  40  are covered with shields of metal plates for suppressing unwanted radiation, that is, a first shield  71 A, a second shield  71 B, and a shield member  60 . 
     As depicted in top views in  FIG. 13  and  FIG. 14 , the electronic equipment  10  includes a heat sink  73  above the main printed circuit board  40 . The heat sink  73  is connected to an integrated circuit  70  corresponding to a heat source in the main printed circuit board  40 . In a case where the integrated circuit  70  is a high-speed CPU, the integrated circuit  70  has high power consumption and requires a large heat sink  73 . The electronic equipment  10  includes a plurality of fans for cooling, and the heat sink  73  receives airflows formed by the fans. 
     The heat sink  73  is disposed above the main printed circuit board  40  and includes a bottom portion  732  shaped like a plate and a plurality of fins  733  formed on the bottom portion  732 . The bottom portion  732  is in contact with the integrated circuit  70 . Heat from the integrated circuit  70  is transmitted from the bottom portion  732  to the fins  733 . 
     The bottom portion  732  is a metal plate in which a vapor chamber, that is, a space with a vaporable liquid sealed therein is formed. However, the bottom portion  732  is a metal plate or a metal block including no such space. The fins  733  are welded to the bottom portion  732  and arranged in a direction along the main printed circuit board  40 . For example, the fins  733  include metal plates arranged at predetermined intervals on an upper surface of the bottom portion  732  parallel to the main printed circuit board  40 . 
     The structure of the heat sink  73  is not limited to the example in  FIG. 13 . For example, the bottom portion  732  and the fins  733  of the heat sink  73  may be integrally formed. Additionally, the plurality of fins  733  may be arranged in an upward-downward direction. In other words, the fins  733  may be configured such that the fins  733  are arranged in a direction perpendicular to the main printed circuit board  40 . 
     With reference back to  FIG. 1 , an upper case  11  includes a main body cover  111 , and a side cover  112  formed separately from the main body cover  111  and attached to the main body cover  111 . The main body cover  111  is V-shaped such that a substantially triangular recess portion  114  is formed in the center of an upper surface of the electronic equipment  10 . By placing the heat sink  73  along an inner wall of the recess portion  114  and providing an inlet port in the inner wall, an inlet area of a sufficient size compatible with the heat sink  73  can be provided. As a result, a large amount of air can be fed to the heat sink  73 , and heat from the heat sink  73  can be efficiently discharged. Note that as long as the inner wall is formed to conform to the arrangement of the heat sink  73 , the shape of the recess portion  114  is not limited to the shape illustrated. Moreover, the side cover  112  is provided with an exhaust port  113 . Note that the side cover  112  may be symmetrically installed on right and left surfaces of the electronic equipment  10 . 
     [Structure of Louver]  FIG. 2  is an exploded perspective view of the exhaust port provided at the upper portion of the electronic equipment  10 . In other words,  FIG. 2  depicts the internal structure of the side cover  112 . As depicted in  FIG. 1  and  FIG. 2 , a plurality of louvers  112   a  arranged in the forward-rearward direction are formed inside the exhaust port  113 . The louvers  112   a  are shaped like plates and guide airflows from the inside of the electronic equipment  10  in an oblique direction toward the back of the electronic equipment  10 . This causes air having passed through the heat sink  73  to be discharged to the back of the electronic equipment  10 . 
     The side cover  112  includes an outer member  112   b  constituting the upper surface and the side surfaces of the electronic equipment  10  and an inner member  112   c  including a plurality of louvers  112   a  and attached to the inner side of the outer member  112   b . The side cover  112  may be integrally formed using one member. 
     In a side view of the electronic equipment  10 , each of the louvers  112   a  desirably partly overlap an adjacent louver  112   a . This prevents the inside of the electronic equipment  10 , for example, a cooling fan, from being exposed to the outside. 
     [Antenna Attachment Member] The electronic equipment  10  includes an antenna.  FIG. 3  is a perspective view of a unit of the electronic equipment  10  including a cooling fan and an antenna attachment member. A housing of the unit includes a first structure housing a fan  39  and an antenna substrate attachment portion  20  corresponding to a second structure. The unit is built into the electronic equipment  10  such that the fan  39  is located behind the unit. The antenna substrate attachment portion  20  is formed at a tip of a support portion  22  extending from a corner of the housing. 
     The antenna substrate attachment portion  20  includes a fitting portion  23  for positioning the antenna substrate and a holding portion  24  holding the antenna substrate. When the antenna substrate is attached to the antenna substrate attachment portion  20 , the fitting portion  23  fits into a hole provided on the antenna substrate to position the antenna substrate. 
     When the antenna substrate attachment portion  20  is seen in front view, the portions such as the fitting portion  23  and the holding portion  24  which constitute the antenna substrate attachment portion  20  include no overlapping portions. In other words, the electronic equipment  10  is not configured such that, when the electronic equipment  10  is viewed from the tip side of the support portion  22 , a component of the antenna substrate attachment portion  20 , corresponding to the second structure, is located behind another component of the antenna substrate attachment portion  20 . This shape allows the first and second structures to be integrally molded, improving productivity. 
       FIG. 4  is a side view of the unit in a case where the antenna attachment member is attached to the antenna substrate. The unit is provided with a plurality of antenna substrate attachment portions  20  to allow the antenna substrate to be attached at different angles. In the illustrated example, the antenna substrates  21 A and  21 B are installed at angles differing from each other by 90 degrees. Specifically, with respect to the electronic equipment  10 , the substrate surface of the antenna substrate  21 A extends in the vertical direction, while the substrate surface of the antenna substrate  21 B extends in the horizontal direction. The number of antenna substrates may be three or more. Varying the orientations (angles) of the antenna substrates enables wider range of transmission and reception of radio waves. 
     [Option Equipment Attachment Portion]  FIG. 5  is an exploded perspective view of the electronic equipment in which the upward direction corresponds to the Z 2  direction in  FIG. 1 . The option equipment attachment portion  30  is provided in a bottom surface of the electronic equipment  10 . The option equipment attachment portion  30  includes an option printed circuit board  31  and a connector  32  used to attach option equipment (not illustrated). Additionally, provided is a lower shield member  34  that covers a part of the main printed circuit board  40  and that suppresses electromagnetic radiation from the electronic equipment to the outside. A lower case  12  houses these structures. Note that the option printed circuit board  31  may be the same as or different from the main printed circuit board  40  and that in the latter case, the option printed circuit board  31  and the main printed circuit board  40  may be electrically connected using a connector or the like. 
       FIG. 6  is a front view of the option equipment attachment portion  30  and the lower shield member  34  provided on the bottom surface side of the electronic equipment  10 . As depicted in  FIG. 6 , the lower shield member  34  covers the region other than a region to which option equipment is attached. In a central portion of the lower shield member  34 , a depression with a difference in level from the upper surface (upper surface in  FIG. 5 ) is formed to house the option equipment. The depression includes a wall  35  ( 35   a ,  35   b ,  35   c , and  35   d ) as an inner wall, and the wall  35  encloses the option equipment attachment portion  30 . 
     At a bottom portion of the depression, an option equipment attachment region of the option printed circuit board  31  is exposed. Note that the option equipment attachment region need not be located in the central portion of the lower shield member  34 . For example, the option equipment attachment region may be in contact with a corner portion corresponding to one of four corners of an upper surface of the lower shield member  34  or with an edge portion corresponding to a side other than the four corners. In either case, by providing, at the bottom portion of the depression of the lower shield member  34 , the region where the option printed circuit board  31  is exposed, the inner wall of the depression can maintain shielding capability at the boundary between the region and the lower shield member  34 . 
     In the illustrated example, the upper surface shape of the depression is substantially rectangular, and thus, the four walls  35   a ,  35   b ,  35   c , and  35   d  are formed. However, the depression is not limited to this shape, and any of a circle, an ellipse, a triangle, or a pentagon or any other polygon with more angles may be used. In this case, the upper surface shape of the depression may be appropriately selected depending on the shape of expected option equipment. In this case as well, the position of the depression in the lower shield member  34  is not limited, and in either way, the inner wall of the depression can maintain the shielding capability. 
     At a lower portion of a pair of opposite walls (in the present embodiment, the walls  35   a  and  35   c ) included in the walls  35   a ,  35   b ,  35   c , and  35   d  forming the depression, provided is a connection portion  36  that is used to connect the lower shield member  34  to the option printed circuit board  31 . The connection portion  36  includes a base portion  361  and a fixing portion  362 . The lower shield member  34  is fixed by screwing, to the option printed circuit board  31 , a hole provided in the fixing portion  362 . The fixing portion  362  is elastic due to at least any one of a material and a structure. For example, the fixing portion  362  is formed as an L-shaped arm to absorb misalignment of components attributed to tolerances or the like. 
     A plurality of vent holes  37  are formed in the pair of opposite walls  35   b  and  35   d  of the lower shield member  34 . The vent hole  37  is formed such that a flow path of air taken from the outside of the housing by a fan to be described below passes over an exposed region of the option printed circuit board  31  and over the option equipment attached to the region. The plurality of vent holes  37  extend in a direction in which the vent holes  37  intersect the circuit board. Specifically, the vent holes  37  include slit-like holes formed in the inner wall of the depression and that are elongate in the upward-downward direction, the holes being arranged in the lateral direction. This allows the option equipment to be efficiently cooled. 
     The lower case  12  in  FIG. 5  is made of resin, and includes an opening  38  corresponding to the option equipment attachment region (option equipment attachment portion  30 ). A cover  381  covers the opening  38  in the lower case  12 . The cover  381  prevents exposure to the outside of the housing of the option equipment. 
       FIG. 7  is a front view of a cover portion attached to the option equipment attachment portion  30 . As depicted in  FIG. 7 , a shield surface  382  is provided on a side of the cover  381  facing the printed circuit board. In the present embodiment, the shield surface  382  is a metal plate. However, the shield surface  382  may include metal foil or any other material that allows inhibition of electromagnetic radiation to the outside. 
     A shielding member  383  is attached to a surface of the shield surface  382  of the cover  381  in such a manner as to enclose the perimeter of the option equipment attachment region when the cover  381  is attached. The shielding member  383  serves as a gasket. The shielding member  383  includes urethane with metal foil attached to a surface of the urethane, or the like, and thus has electromagnetic wave shielding capability and elasticity. When the cover  381  is attached to the lower case  12 , the shielding member  383  comes into contact with the perimeter of the depression in the lower shield member  34  to electrically close the option equipment attachment portion  30 , inhibiting radiation of electromagnetic noise to the outside of the housing. 
     [Fan] The electronic equipment  10  includes a plurality of axial fans one of which is assigned for contribution to cooling of the option equipment.  FIG. 8  is a horizontal cross-sectional view of the electronic equipment in which the upward direction corresponds to the Z 2  direction depicted in  FIG. 1 . The left side in the figure corresponds to a front surface of the electronic equipment  10 . As depicted in  FIG. 8 , the fan  39  contributing to cooling of the option equipment is provided on the bottom surface side of the electronic equipment  10  and on a rear surface side of the housing. In  FIG. 8 , airflows in this case are illustrated by blank arrows. Air is taken from the front surface and the side surfaces of the housing and flows through a pre-stage path x 1  and reaches the option equipment attachment portion  30 . Then, the air enters the option equipment attachment region via the vent holes  37 . The air, which cools the option equipment, passes through a post-path x 2  via facing vent holes  37  and is then discharged to the outside by the fan  39 . 
     [In-apparatus Wiring] As depicted in  FIG. 5 , a support member  41  supporting a separate electronic component is provided on the main printed circuit board  40 . A cable  42  to which a display corresponding to external equipment  43  is connected is connected to a connector  400  on the main printed circuit board  40 . 
     The cable  42  is positioned by the support member  41  inside the housing.  FIG. 9  is an enlarged vertical cross-sectional view of the electronic equipment in which the upward direction corresponds to the Z 2  direction depicted in  FIG. 1 . As depicted in  FIG. 9 , the cable  42  extends from the main printed circuit board  40  and is pushed against the surface of the main printed circuit board  40  by a foot portion  411  of the support member  41 . The lower shield member  34  is also overlaid on the surface of the main printed circuit board  40 , and an outer side of a side surface of the support member  41  constituting the foot portion  411  of the support member  41  is covered with a side surface of the lower shield member  34 . The side surface of the lower shield member  34  is provided with an opening  341 . The cable  42  is routed through the opening  341  and out from the lower shield member  34 . 
     As depicted in  FIG. 9 , a shielding member  44  is attached to the side surface of the lower shield member  34 . The shielding member  44  covers the opening  341  to prevent leakage of unwanted radiation from between the cable  42  and the lower shield member  34 . The shielding member  44  includes an elastic material such as rubber. 
       FIG. 10  illustrates the shielding member  44  as viewed from the side surface of the lower shield member  34 . As depicted in  FIG. 10 , a plurality of cuts  441  are formed in a part of the shielding member  44 . The cuts  441  are formed radially around a central point of a lower end of the shielding member  44 . The cable  42  is threaded through the center of the radial cuts to allow the area between the opening  341  and the cable  42  to be effectively blocked. Note that the shielding member  44  may be provided inside a shield case. Additionally, the cuts  441  are not limited to the shape and the positions illustrated. 
     [Land Shape]  FIG. 11  is a the main printed circuit board  40  as viewed from the upper surface. Resist treatment is applied to the surfaces of the main printed circuit board  40 , and electronic components are mounted on both surfaces of the main printed circuit board  40 . The main printed circuit board  40  includes a plurality of through-holes  501  and  502 . 
     Fastening members such as screws and discrete components (not illustrated) such as electrolytic capacitors and transistors are attached into the through-holes  501  and  502  (the fastening members and the discrete components are hereinafter referred to as “components to be mounted”). In a case where the components to be mounted are screws, one through-hole  501  and one through-hole  502  may be formed. For electrolytic capacitors, two holes are formed, and for transistors, three holes are formed. Lands  51 A and  51 B are provided around the through-holes  501  and  502 , and are regions electrically connecting the components to be mounted to the main printed circuit board  40 . 
     The components to be mounted take various forms. In  FIG. 11 , a component having a hexagonal external shape as viewed from above is assumed to be mounted in the through-hole  501 , an upper through-hole in the drawing, and a circular component is assumed to be similarly mounted in the other through-hole  502 . Thus, in the present embodiment, a hexagonal land (that is, an electrical connection region; this also applies to the description below)  51 A is provided for the hexagonal component, and a circular land  51 B is provided for the circular component. These lands can be formed by avoiding applying resist to copper foil for wiring. By providing lands having similar shapes associated with the appearances of components, particularly shapes as viewed from above, that is, planar projective shapes (shapes viewed from the front in an attachment direction), errors can be reduced when the components are manually mounted, and efficiency of programming can be improved even when the components are mounted by image recognition. 
     In this regard, having “similarity” or “being similar” may include, in addition to a case of belonging to the same type in classification of general figures such as a circle, an ellipse, a triangle, and a rectangle, a case of being the same in the number of vertexes and the angle between sides at the vertex, and the like. Note that the shapes of the through-holes  501  and  502  themselves need not correspond to the shapes of the components to be mounted. 
     [Mounting Steps]  FIG. 17  depicts a processing procedure for automatic mounting of the electronic equipment  10  utilizing the lands in  FIG. 11 . An automatic mounting apparatus (not illustrated) includes a camera, a control section, and a robot for mounting. The control section includes a calculation section such as a CPU, a communication section implementing communication with the camera and the robot, and a storage section storing necessary information. First, the camera is used to capture an image of the main printed circuit board  40  ( 51 ). The captured image is transmitted to the control section, which performs image recognition (S 2 ). Specifically, the control section recognizes the positions of the through-holes  501  and  502  and the shapes of the lands  51 A and  51 B provided around the through-holes  501  and  502 . 
     Then, the control section, determines, on the basis of the shapes of the lands  51 A and  51 B, components to be mounted in the through-holes  501  and  502  (components to be mounted) (S 3 ). Thus, the storage section of the control section pre-stores an association table in which identification information regarding components to be mounted is associated with the shapes of the lands. The control section references the association table to acquire identification information regarding the components to be mounted. The control section transmits, to a robot arm, the identification information regarding the determined components to be mounted and information indicative of mounting positions of the components (S 4 ). In accordance with the instruction, the robot arm performs the correct mounting (S 5 ). The above-described processing implements efficient automatic mounting. Note that the control section may be provided inside the automatic mounting apparatus or may operate in a server on the Internet. 
     [Printed Circuit Board Lower Surface] An electromagnetic shield structure of the main printed circuit board  40  will be described. 
     As depicted in  FIG. 5 , a shield member  60  covers all of a plurality of electronic components mounted on one surface of the main printed circuit board  40  to prevent (inhibit) electromagnetic radiation from the electronic components. The shield member  60  is provided with no hole except a hole for fixing the shield member  60  to the main printed circuit board  40 . This structure enables a further reduction in electromagnetic noise from the electronic components inside the shield. 
       FIG. 12  is a front view of the shield member. As depicted in  FIG. 12  and  FIG. 13 , the shield member  60  is provided with edge portions that are in contact with one surface of the main printed circuit board  40  and a lower surface forming a housing space that protrudes from the edge portions in a direction away from the one surface of the main printed circuit board  40  and that covers all of the plurality of electronic components on the main printed circuit board. The lower surface is provided with a plurality of recess portions  61 . The recess portions  61  are formed at positions corresponding to the electronic components on the printed circuit board in such a manner as to avoid the components. In other words, the recess portions  61  are formed such that, with the shield member  60  attached to the printed circuit board, a bottom portion of the shield member  60  contacts at least a part of each of the electronic components on the printed circuit board. This structure places the electronic components closer to the shield member  60  to make the electronic components likely to thermally contact the shield member  60 . Note that the shape and size of the recess portions  61  are not limited and may vary according to the positions by being selected as appropriate depending on the corresponding electronic components. 
     A thermal interface material (TIM) is applied to the surfaces of the plurality of electronic components disposed on the main printed circuit board (not illustrated in  FIG. 12 ). The shield member  60  and the plurality of electronic components are thermally connected together via the TIM. Thus, heat from the plurality of electronic components is transmitted to the shield member  60 , which functions as a heat dissipating plate. In this case, the electronic equipment  10  may be further provided with at least any one of mechanisms for cooling the shield member  60 , such as a fan, a vent hole, and a heat sink. 
     As an example, a heat sink  62  is provided on at least a part of a surface of the shield member  60  opposite to a surface covering the electronic components (electronic component-side surface), for example, at the edge of the shield member  60 , such that the heat sink  62  thermally contacts the shield member  60 . With the shield member  60  attached to the printed circuit board, the heat sink  62  is provided at a position where the heat sink  62  covers a power element or a high-speed element that consumes high power, to thermally connect to the element. Thus, heat from each element is efficiently transmitted to the shield member  60 . Note that the position and area of the heat sink  73  with respect to the shield member  60  are not limited. 
     [Printed Circuit Board Upper Surface] The above-described shield member  60  covers a lower surface of the main printed circuit board  40  when the electronic equipment  10  is placed as depicted in  FIG. 1 . On the other hand, a plurality of electronic components are disposed on an upper surface of the main printed circuit board  40 , and thus, a shield is provided covering the electronic components as described above.  FIG. 13  is a cross-sectional view of the main printed circuit board to which the shield is attached. The electronic components disposed on the upper surface of the main printed circuit board  40  include an integrated circuit  70  such as a CPU operating at high speed. A first shield  71 A covers the integrated circuit  70 . An opening  72 A is provided in the first shield  71 A, and the heat sink  73  contacts the integrated circuit  70  via the opening. 
     The second shield  71 B covers the first shield  71 A and a plurality of other electronic components. The second shield  71 B is provided overlapping the first shield  71 A. Note that, for easy understanding, in  FIG. 13 , spacing is provided between the heat sink  73 , the first shield  71 A, and the second shield  71 B. In actuality, the heat sink  73 , the first shield  71 A, and the second shield  71 B are fixed with no spacing between them. 
     The second shield  71 B is also provided with an opening  72 B through which the heat sink  73  contacts the integrated circuit  70 . The opening  72 B in the second shield  71 B is provided overlapping the opening  72 A in the first shield  71 A. A protruding portion  731  is provided on a bottom surface of the heat sink  73  and is fitted into an opening portion formed by the openings  72 A and  72 B, to thermally connect the integrated circuit  70  to the heat sink  73 . Note that, when the two shields are overlaid on each other, edges of the openings  72 A and  72 B in the shields need not align with each other. The structure may be such that, even with the edges misaligned with each other, the heat sink  73  can be thermally connected to the integrated circuit  70 . The openings  72 A and  72 B may vary in size. 
     A shielding member  74 A is disposed between the first shield  71 A and the second shield  71 B and between the first shield  71 A and the heat sink  73 . The shielding member  74 A includes an elastic material such as rubber or urethane with metal foil attached to a surface of the material, and thus has conductivity and flexibility. The shielding member  74 A serves to fill the gap between the first shield  71 A and the opening portion formed by the openings  72 A and  72 B. Specifically, the shielding member  74 A fills the gap between the first shield  71 A and the second shield  71 B and the gap between the first shield  71 A and the heat sink  73 . Thus, the shielding member  74 A can be replaced with a “conductive first connection member.” This structure prevents electromagnetic noise generated by the electronic component in the first shield  71 A from leaking from between the first shield  71 A and the second shield  71 B or from between the first shield  71 A and the heat sink  73 . The shielding member  74 A may be provided in simultaneous contact with the first shield  71 A, the second shield  71 B, and the heat sink  73  at predetermined positions. 
     Similarly, a shielding member  74 B having conductivity and flexibility is also disposed between the second shield  71 B and a bottom portion  732  of the heat sink  73 . In other words, the shielding member  74 B serves to fill the gap between the second shield  71 B and the opening portion formed by the openings  72 A and  72 B. Specifically, the shielding member  74 B fills the gap between the second shield  71 B and the heat sink  73 . Thus, the shielding member  74 B can be replaced with a “conductive second connection member.” This prevents electromagnetic noise generated by the electronic components inside the first shield  71 A and the second shield  71 B from leaking from between the second shield  71 B and the heat sink  73 . 
     As described above, the perimeter of the integrated circuit  70 , operating at high speed, is covered with the two shields, the heat sink penetrates the two shields, and the shielding member (connection member) having elasticity and conductivity fills the gap between the shield and the heat sink. Thus, even in an environment in which high-frequency noise occurs, a sufficient electromagnetic radiation prevention effect can be easily produced. Additionally, the heat sink  73  is placed on the shield without any gap, and thus, the heat sink  73  itself also serves as a shield. 
     [Light Guide Path] As depicted in  FIG. 1 , the electronic equipment  10  includes a light emission region  80  in the front surface of the electronic equipment  10 . The light emission region  80  includes a plurality of indicators  81  to notice a user of an operating state of the electronic equipment  10  through a light emission pattern. 
       FIG. 15  is a cross-sectional view of the electronic equipment in which the light emission region is seen in the Y 2  direction. In other words,  FIG. 15  depicts the internal structure of the light emission region  80 . The light emission region  80  includes a plurality of LEDs (Light-emitting Diodes)  82  mounted on the circuit board and a plurality of light guiding members  83 . Each of the plurality of light guiding members  83  includes a bottom surface  84  and an emission surface  85 , and the bottom surfaces  84  of the plurality of light guiding members  83  are each disposed facing a plurality of LEDs  82 . This structure can guide light from the LEDs to the respective emission surfaces  85 . 
     Light shielding members  86  are each disposed between the plurality of LEDs  82 . Each of the light shielding members  86  prevents light from the LED adjacent to the light shielding member  86  from entering the light guiding member  83 . This structure prevents mixture of light from adjacent LEDs leading to an ambiguous light emission pattern of the indicators  81 . 
       FIG. 16  is a diagram depicting the shape of the light shielding member  86 . In this example, the light shielding member  86  has a comb tooth shape integrally formed by a plurality of partitioning walls to be disposed between the LEDs  82  and a shaft supporting the partitioning walls at appropriate intervals. This structure allows easier assembly than a structure with one light shielding member provided between the adjacent LEDs. Additionally, when the light shielding member  86  is manufactured, a material plate is cut into a shape in which comb teeth of one comb mesh with comb teeth of another comb. Then, the gaps between the comb teeth of one comb can be used as comb teeth of another comb, enabling a reduction in material loss. 
     An embodiment has been described above. Modified techniques will be described below. The shielding member  44  in  FIG. 10  is provided with the radial cuts  441 . However, the present invention is not limited to this, and any shape may be used that can reduce gaps resulting from threading of the cable  42 . For example, instead of the cuts  441 , holes each with a diameter equivalent to or slightly smaller than the diameter of the cable  42  may be formed. Alternatively, depending on the material of the shielding member  44 , the deformability of the shielding member  44  may be utilized to thread the cable  42  between the shielding member  44  and the main printed circuit board  40  without providing cuts or holes. 
     The shielding members appearing at portions of the embodiment may be formed by mixing, instead of attaching metal foil to the surface of an elastic material, a metal compound or a metal filler into such a material. Additionally, the shielding members may each be made of a metal component having a shape compatible with a corresponding structural portion and include a rubber base attached to a rear surface of the component. 
     INDUSTRIAL APPLICABILITY 
     As described above, the present invention can be utilized for a game machine, a development machine for executing various programs being developed (for example, game programs), and an information processing apparatus other than the game machines (for example, server apparatus). 
     REFERENCE SIGNS LIST 
     
         
           10 : Electronic equipment 
           12 : Lower case 
           111 : Main body cover 
           112 : Side cover 
           113 : Exhaust port 
           20 : Antenna substrate attachment portion 
           30 : Option equipment attachment portion 
           31 : Option printed circuit board 
           34 : Lower shield member 
           341 : Opening 
           35 : Wall 
           37 : Vent hole 
           38 : Opening 
           381 : Cover 
           382 : Shield surface 
           383 : Shielding member 
           39 : Fan 
           40 : Main printed circuit board 
           44 ,  74 A,  74 B: Shielding member 
           441 : Cut 
           73 : Heat sink 
           501 ,  502 : Through-hole 
           51 A,  51 B: Land 
           60 : Shield member 
           62 ,  73 : Heat sink 
           70 : Integrated circuit 
           71 A: First shield 
           71 B: Second shield 
           80 : Light emission region 
           80 ,  81 : Indicator 
           82 : LED 
           86 : Light shielding member