WO2005041628A1 - 回路装置 - Google Patents
回路装置 Download PDFInfo
- Publication number
- WO2005041628A1 WO2005041628A1 PCT/JP2004/014552 JP2004014552W WO2005041628A1 WO 2005041628 A1 WO2005041628 A1 WO 2005041628A1 JP 2004014552 W JP2004014552 W JP 2004014552W WO 2005041628 A1 WO2005041628 A1 WO 2005041628A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shield case
- tongue
- heat
- tongues
- electronic component
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
- H05K7/2049—Pressing means used to urge contact, e.g. springs
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
- H05K9/0049—Casings being metallic containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the present invention relates to a circuit device.
- FIG. 11 is a perspective view of a conventional circuit device.
- FIG. 12 is a cross-sectional view taken along the line EE.
- the circuit device includes a circuit board 10 and a shield case 1 for preventing noise or the like from outside the document from acting on the circuit board 10.
- a rectangular tongue piece 2 is provided on the top surface 5 of the shield case 1, and the tongue piece 2 is sunk so as to contact heat-generating electronic components such as the semiconductor integrated circuit 11 and the like. As a result, heat is conducted to the shield case 1 and further radiated to the outside.
- Patent Literature 1 Japanese Patent Application Laid-Open No. 2000-214 4 FIG.
- the circuit board 10, the semiconductor integrated circuit 11, and the chip-type electronic component 12 inside the shield case 1 can be seen from the gap 4 between the shield case top surface 5 and the tongue piece 2. For this reason, they are easily modified or destroyed. In addition, foreign substances easily enter from outside, which is not preferable in quality.
- the present invention has been made in view of the above problems, and has as its object to provide a circuit device that can prevent unauthorized modification, destruction, and intrusion of foreign matter. Disclosure of the invention
- the tongue is formed on the top and Z or bottom surface of the shield case by cutting along a line connecting points around the center point of the circle, and the tongue is directed toward the inside of the shield case. And the tip of the tongue piece is brought into contact with a heat-generating electronic component such as a semiconductor integrated circuit. That is, the tongue piece is provided such that a plurality of boundary lines with the shield case surface form a substantially polygonal shape, a substantially circular shape, and a substantially elliptical shape. is there. By cutting the tip of the tongue piece so that the tip of the tongue piece is chamfered, the contact between the tongue piece and the heat-generating electronic component can be ensured.
- Fig. 6 shows a perspective view of a circuit device in which electronic components that are taller than the heat-generating electronic components (hereinafter referred to as tall electronic components) are mounted on a circuit board on the top side of the shield case.
- FIG. 7 shows a cross-sectional view taken along the line C-C.
- the height direction distance between the top surface of the shield case and the circuit board is larger than when no high-profile electronic components are provided. That is, the distance in the height direction between the top surface of the shield case and the top surface of the heat-generating electronic component is increased. Therefore, the bending angle of the tongue must be excessively large, and the tongue does not have sufficient paneling properties.
- the gap between the tongue pieces increases, and the effect of avoiding unauthorized modification, destruction, and invasion of foreign matter decreases.
- the bending angle of the tongue can be adjusted properly by increasing the size of the tongue.
- interference between the tongues may occur. It is expected that the mechanical strength of the top surface of the shield case will be excessively reduced and a large tongue cannot be provided.
- a concave portion is provided on the top surface, a boundary line with the tongue is arranged on the surface of the concave portion, and the tongue is formed in the same manner as forming the tongue on the top surface.
- the tongue can be abutted against the parts.
- the distance in the height direction between the boundary line between the surface of the concave portion and the tongue and the heat-generating electronic component is reduced, so that the bending angle of the tongue becomes appropriate and the above problem can be avoided.
- the height direction distance between the top surface of the shield case and the top surface of the heat-generating electronic component is too small, a sufficient bending angle of the tongue piece cannot be obtained, and the tongue piece and the heat-generating electronic component cannot be obtained.
- the contact of the wire becomes unstable, and the heat radiation efficiency decreases.
- a convex portion is provided on the top surface, a boundary line with the tongue piece is arranged on the surface of the convex portion, and the tongue piece is formed in the same manner as forming the tongue piece on the top surface,
- the tongue may be brought into contact with the heat-generating electronic components.
- the height direction distance between the boundary line between the surface of the projection and the tongue and the heating electronic component increases, Therefore, the bending angle of the tongue piece becomes appropriate, and the above problem can be avoided.
- a heat conductive material such as conductive grease or conductive rubber sheet is added to the contact between the heat-generating electronic component and the tongue to strengthen the mechanical connection between the heat-generating electronic component and the tongue, and to dissipate heat. Can be improved.
- the heat conductive material is conductive.
- the height of the top of the shield case or Z or the bottom surface and the top of the heat-generating electronic component is large due to the fact that a tall electronic component that is taller than the heat-generating electronic component is mounted on the circuit board, or For example, when the circuit device is mounted on the main circuit board, the volume of the circuit device is limited to a small size to prevent part of the circuit device from interfering with other components. Even if the height direction distance between the bottom surface and the top surface of the heat-generating electronic component is small, the top surface and / or bottom surface facing the mounted heat-generating electronic component is provided with a concave portion and a Z or convex portion, and the concave portion is provided.
- a boundary line with the tongue is arranged on the surface of the upper surface and the surface of the Z or the convex portion, and the tongue is formed on the concave portion and the Z or the convex portion in the same manner as forming the tongue on the top surface and / or the bottom surface, What is necessary is just to make a tongue piece contact a heating electronic component.
- the distance in the height direction between the concave surface and the boundary line between the Z or convex surface and the tongue and the top surface of the heat-generating electronic component becomes appropriate, and accordingly, the bending angle of the tongue becomes appropriate. Can be avoided.
- FIG. 1 is a perspective view of the wireless LAN device of the first embodiment
- FIG. 2 is a cross-sectional view of the wireless LAN device of the first embodiment.
- FIG. 3 is a perspective view of the wireless LAN device of the second embodiment
- FIG. 4 is a perspective view of the wireless LAN device of the third embodiment.
- FIG. 5 is a cross-sectional view of the wireless LAN device of the third embodiment
- Fig. 6 is a perspective view of a wireless lan device mounted with tall electronic components taller than the heat-generating electronic components
- Fig. 7 is a cross-sectional view of a wireless lan device mounted with high-profile electronic components taller than the heat-generating electronic components.
- FIG. 8 is a perspective view of the wireless LAN device of the fourth embodiment
- FIG. 9 is a cross-sectional view of the wireless LAN device of the fourth embodiment.
- FIG. 10 is a cross-sectional view of the wireless LAN device of the fifth embodiment.
- FIG. 11 is a perspective view of a conventional circuit device
- FIG. 12 is a cross-sectional view of a conventional circuit device. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 shows a perspective view of a wireless LAN device according to Embodiment 1 of the present invention.
- FIG. 2 is a cross-sectional view taken along the line A-A.
- the wireless LAN device includes a circuit board 10 and a shield case 1 for blocking external noise or the like from acting on the circuit board 10 .
- the shield case 1 is provided with the circuit board 10.
- the top surface 5 of the shield case 1 is provided with four tongue pieces 2a, and the four boundary lines 3a between the top surface 5 of the shield case 1 and the tongue pieces 2a are square. No.
- These four tongue pieces 2a are formed by cutting along the line connecting the center point of the square to the apex of the square, and are sunk toward the inside of the shield case 1 and are thermoelectric components. It is in contact with the semiconductor integrated circuit 11. To ensure the contact, the tip of the tongue piece 2a is cut and chamfered. Since the gap 4a between the tongue pieces is smaller than the gap 4 of the conventional example, unauthorized modification, destruction, and invasion of foreign matter can be avoided. The heat generated from the semiconductor integrated circuit 11 is conducted to the entire shield case through the four boundary lines 3a of the tongue pieces 2a, and thus has higher heat dissipation than the conventional shield case.
- the wireless LAN device includes a circuit board and a shield case 1 for blocking external noise and the like from acting on the circuit board, and the shield case 1 houses the circuit board. .
- Semiconductor integrated circuits and chip-type electronic components are mounted on the circuit board.
- the top surface 5 of the shield case 1 is provided with five tongue pieces 2 b, and the five boundary lines 3 b between the top surface 5 of the shield case 1 and the tongue pieces 2 b are pentagonal. .
- These five tongue pieces 2 b are formed by cutting along a line connecting the pentagonal vertex to the pentagonal center point, and are sunk toward the inside of the shield case 1, which is a heat-generating electronic component.
- the tip of the tongue piece 2b is cut and chamfered. Since the gap 4b between the tongue pieces is smaller than the gap 4 of the conventional example, unauthorized modification, destruction, and invasion of foreign matter can be avoided.
- the heat generated from the semiconductor integrated circuit is conducted to the entire shield case via the five boundary lines 3b of the tongue pieces 2b, and thus has higher heat dissipation than the conventional shield case.
- FIG. 4 is a perspective view of a wireless LAN device according to Embodiment 3 of the present invention.
- FIG. 5 is a cross-sectional view taken along the line B-B.
- the wireless LAN device includes a circuit board 10 and a shield case 1 for blocking external noise and the like from acting on the circuit board 10 .
- the shield case 1 includes the circuit case 10.
- the board 10 is housed.
- the top surface 5 of the shield case 1 is provided with a recess 7.
- tongue pieces 2 c are provided on the bottom surface 7 1 of the concave portion 7, and four boundary lines 3 c between the bottom surface 7 1 of the concave portion 7 and the tongue pieces 2 c are square.
- the four tongue pieces 2 c are formed by cutting along the line connecting the center point of the square to the apex of the square, and are sunk toward the inside of the shield case 1. It is in contact with a certain semiconductor integrated circuit 11. Contact In order to ensure the above, the tip of the tongue piece 2c is cut off to be chamfered.
- the four tongue pieces 2 c protrude from the boundary line with the bottom surface 7 1 of the recess 7 instead of the top surface 5 and sink toward the semiconductor integrated circuit 11, so that the bending angle of the tongue piece 2 c Can be an appropriate value. Therefore, since the tongue piece has sufficient spring properties, the contact between the tongue piece 2c and the semiconductor integrated circuit 11 is stabilized, and the heat dissipation efficiency is improved as compared with the circuit devices shown in FIGS. 6 and 7.
- the gap 4c between the tongue pieces can also be made smaller than the gap 4d between the tongue pieces shown in FIGS. 6 and 7, and the effect of avoiding unauthorized modification, destruction, and intrusion of foreign matter is also improved. Further, heat generated from the semiconductor integrated circuit 11 is conducted to the entire shield case through the four boundary lines 3c of the tongue pieces 2c, so that heat dissipation is higher than that of the conventional shield case.
- FIG. 8 is a perspective view of a wireless LAN device according to a fourth embodiment of the present invention.
- FIG. 9 is a cross-sectional view taken along the line DD.
- the wireless LAN device includes a circuit board 10 and a shield case 1 for blocking external noise or the like from acting on the circuit board 10 .
- the shield case 1 includes the circuit board 10.
- Contains 10 A semiconductor integrated circuit 11 and a chip-type electronic component 12 are mounted on the circuit board 10, and a height between a back surface 9 of a top surface 5 of the shield case 1 and a top surface of the semiconductor integrated circuit 11 is provided. The distance in the vertical direction is substantially zero.
- a projection 8 is provided on the top surface 5 of the shield case 1, a projection 8 is provided.
- tongue pieces 2 e are provided on the top surface 8 1 of the protrusion 8, and four boundary lines 3 e between the top surface 8 1 of the protrusion 8 and the tongue piece 2 e form a square. I have. These four tongue pieces 2 e are formed by cutting along the line connecting the vertices of the rectangle from the center point of the rectangle, and are sunk toward the inside of the shield case 1. It is in contact with a certain semiconductor integrated circuit 11. In order to ensure the contact, the tip of the tongue piece 2 e is cut and chamfered.
- the tongue pieces 2 e protrude from the boundary 3 e of the convex portion 8 with the top surface 8 1 instead of the top surface 5 and sink into the semiconductor integrated circuit 11, the tongue pieces 2 e are bent. Angle is appropriate It can be. Therefore, the contact between the tongue piece 2 e and the semiconductor integrated circuit 11 is stable, and the heat radiation efficiency is improved as compared with the case where the tongue piece protrudes directly from the boundary line with the top surface 5 and contacts the semiconductor integrated circuit 11. Further, heat generated from the semiconductor integrated circuit 11 is conducted to the entire shield case through four boundary lines 3 e of the tongue piece 2 e, so that heat dissipation is higher than that of the conventional shield case.
- FIG. 10 is a sectional view of a wireless LAN device according to a fifth embodiment of the present invention.
- a heat conductive material 6, such as conductive grease or a conductive rubber sheet, is added to the contact portion between the semiconductor integrated circuit 11 and the tongue 2a to mechanically connect the semiconductor integrated circuit 11 to the tongue 2a. The connection is strengthened and the heat dissipation is improved.
- Other configurations and effects are the same as those of the first embodiment.
- the boundary line of the tongue piece is a quadrangle or a pentagon, but the present invention is not limited to this, and any boundary may be used as long as the polygon is a polygon or a circle or an ellipse. good.
- a shape without chamfering at the tip of the tongue piece may be used.
- the shapes of the concave portions and the convex portions are not limited to those of the embodiment. If the bending angle of the tongue piece is appropriate, the shape having a plurality of steps or the bottom surface of the concave portion and / or the top surface of the convex portion may be a shield case. It may be parallel to or parallel to the top and Z or bottom of the surface.
- the gap between the tongue pieces is smaller than the gap between the tongue piece and the shield case top surface in the conventional example by forming the tongue pieces provided on the top surface and the Z or bottom surface of the shield case into the above shape. Therefore, unauthorized modification or destruction is difficult, and the probability of foreign substance intrusion can be reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003366603A JP4052995B2 (ja) | 2003-10-27 | 2003-10-27 | 回路装置 |
JP2003-366603 | 2003-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005041628A1 true WO2005041628A1 (ja) | 2005-05-06 |
Family
ID=34510248
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/014552 WO2005041628A1 (ja) | 2003-10-27 | 2004-09-27 | 回路装置 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4052995B2 (ja) |
TW (1) | TWI287953B (ja) |
WO (1) | WO2005041628A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170094844A1 (en) * | 2015-09-25 | 2017-03-30 | Intel Corporation | EMI shielding structure to enable heat spreading and low cost assembly |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011176096A (ja) * | 2010-02-24 | 2011-09-08 | Mitsumi Electric Co Ltd | 電子機器 |
CN108966618B (zh) * | 2017-05-26 | 2020-04-24 | 南宁富桂精密工业有限公司 | 屏蔽罩及应用该屏蔽罩的电子装置 |
JP7253048B2 (ja) * | 2019-05-23 | 2023-04-05 | 株式会社ソニー・インタラクティブエンタテインメント | 電子機器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06209174A (ja) * | 1991-07-23 | 1994-07-26 | Alcatel Telspace | 放熱器 |
JPH1065385A (ja) * | 1996-08-21 | 1998-03-06 | Mitsubishi Electric Corp | 基板ケース構造体 |
JP2000223630A (ja) * | 1999-02-04 | 2000-08-11 | Sharp Corp | 金属筐体に囲まれた電子部品の放熱構造 |
JP2001339194A (ja) * | 2000-05-27 | 2001-12-07 | Mannesmann Vdo Ag | 電子回路 |
-
2003
- 2003-10-27 JP JP2003366603A patent/JP4052995B2/ja not_active Expired - Fee Related
-
2004
- 2004-09-27 WO PCT/JP2004/014552 patent/WO2005041628A1/ja active Application Filing
- 2004-10-21 TW TW93131947A patent/TWI287953B/zh not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06209174A (ja) * | 1991-07-23 | 1994-07-26 | Alcatel Telspace | 放熱器 |
JPH1065385A (ja) * | 1996-08-21 | 1998-03-06 | Mitsubishi Electric Corp | 基板ケース構造体 |
JP2000223630A (ja) * | 1999-02-04 | 2000-08-11 | Sharp Corp | 金属筐体に囲まれた電子部品の放熱構造 |
JP2001339194A (ja) * | 2000-05-27 | 2001-12-07 | Mannesmann Vdo Ag | 電子回路 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170094844A1 (en) * | 2015-09-25 | 2017-03-30 | Intel Corporation | EMI shielding structure to enable heat spreading and low cost assembly |
US9769966B2 (en) * | 2015-09-25 | 2017-09-19 | Intel Corporation | EMI shielding structure to enable heat spreading and low cost assembly |
Also Published As
Publication number | Publication date |
---|---|
JP4052995B2 (ja) | 2008-02-27 |
JP2005129873A (ja) | 2005-05-19 |
TWI287953B (en) | 2007-10-01 |
TW200520643A (en) | 2005-06-16 |
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