CN201197259Y - Electronic equipment with shielding case - Google Patents
Electronic equipment with shielding case Download PDFInfo
- Publication number
- CN201197259Y CN201197259Y CNU200820023167XU CN200820023167U CN201197259Y CN 201197259 Y CN201197259 Y CN 201197259Y CN U200820023167X U CNU200820023167X U CN U200820023167XU CN 200820023167 U CN200820023167 U CN 200820023167U CN 201197259 Y CN201197259 Y CN 201197259Y
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- CN
- China
- Prior art keywords
- circuit board
- shielding case
- electric conductor
- described circuit
- plasma
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model discloses a plasma television with a shielding case. The plasma television comprises a shielding case; the shielding case comprises an electronic component and a circuit board; the shielding case is provided with a slotted hole; the circuit board is arranged at the slotted hole; the circuit board is connected with the electronic component by a connecting line; and the circuit board is connected with the shielding case through an electrical conductor. The plasma television has the advantages that a plurality of ground wires are adopted in order to form a multipoint earthling system to reduce the electric resistance between the earthling system of the circuit board and a casing to a maximum extent. An external connected circuit board is directly connected to the shielding case by a short ground wire, so the gap between the shielding case and the external connected circuit board is greatly decreased, the shielding effect is obviously improved, and no magnetic ring is needed, thereby not only reducing cost, but also improving consistency.
Description
Technical field
The utility model relates to a kind of electronic equipment with shielding case, especially a kind of plasma TV with shielding case.
Background technology
Along with the raising of the maturation and the people's living standard of technology, be that the panel TV of representative is more and more universal with plasm TV, LCD TV.Plasma TV adopts shielding mode as topmost EMI (Electro Magenetic Interference electromagnetic interference) safeguard procedures usually.But because the needs of external circuits plates such as remote control panel, keypad are installed, need on shielding case, open some holes, groove, so that lay the related circuit plate, so just cause shielding case can not form full-enclosed structure, make shielding properties reduce, the internal electrical magnetic wave easily from these tappings to external radiation.
In addition, the ground wire that connects signal processing circuit board and these external circuits plates is often long, and ground wire can cause stronger EMI radiation as the return circuit of signal code.
Adopting at most to be connecting line (holding wire, ground wire) at the external circuits plate to go up at present increases magnet ring, increases the method for vibration-absorptive material simultaneously on magnet ring, absorbs by lead to extraradial electromagnetic wave.But because the existence of opening slot, still some electromagnetic wave is leaked to the shielding case outside, influences complete machine EMC performance.And also there are requirement, cost height in the position of magnet ring on connecting line.
The external circuits plate links to each other by long ground wire with signal processing circuit board, will produce certain impedance between the two, its resistance equals the conductor resistance value as ground wire, system reference ground only is fixedly attached on the shielding case by the screw on the signal processing circuit board, and between the reference ground of external circuits plate form electrical potential difference with making shielding, make the shield effectiveness variation.
The utility model content
The utility model has solved the weak point of above-mentioned existing existence and a kind of electromagnetic armouring structure of plasma TV is provided.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of electronic equipment with shielding case, comprise shielding case, accommodate electronic building brick and circuit board in the described shielding case, described shielding case has hole slot, the place disposes circuit board at hole slot, described circuit board is connected by connecting line with electronic building brick, it is characterized in that: described circuit board is connected with shielding case by electric conductor.
According to another embodiment of the present utility model, electronic equipment comprises that further described circuit board has at least one pad for the welding electric conductor.
According to another embodiment of the present utility model, electronic equipment comprises that further described circuit board has the fixing installing hole of electric conductor of a usefulness screw.
According to another embodiment of the present utility model, electronic equipment comprises that further described circuit board is to have the multi-layer sheet of separate planes or have the larger area single sided board or have the larger area double sided board.
According to another embodiment of the present utility model, electronic equipment comprises that further the hole slot place near described circuit board is a near-end, and described electric conductor is connected with the near-end of shielding case.
Another one technical scheme of the present utility model is: a kind of plasma TV with shielding case, comprise shielding case, accommodate electronic building brick and circuit board in the described shielding case, described shielding case has hole slot, the place disposes circuit board at hole slot, described circuit board is connected by connecting line with electronic building brick, and described circuit board is connected with shielding case by electric conductor.
According to another embodiment of the present utility model, the further described circuit board of plasma TV has at least one pad for the welding electric conductor.
According to another embodiment of the present utility model, the further described circuit board of plasma TV has the fixing installing hole of electric conductor of a usefulness screw.
According to another embodiment of the present utility model, plasma TV comprises that further described circuit board is to have the multi-layer sheet of separate planes or have the larger area single sided board or have the larger area double sided board.
According to another embodiment of the present utility model, plasma TV is a near-end near the hole slot place of described circuit board further, and described electric conductor is connected with the near-end of shielding case.
The beneficial effects of the utility model are that the purpose of many ground wires of employing forms the multipoint earthing network exactly, reduces the ground networks of circuit board self and the resistance between the casing ground as far as possible.The external circuits plate directly links to each other with shielding case by the short ground wire of length, so the slit of shielding case and external circuits plate greatly reduces, and shield effectiveness is clearly better, and needn't use magnet ring, promptly reduces cost, and has improved consistency again.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structural representation of the utility model preferred embodiment;
Among the figure, 1, shielding case, 3, electronic building brick, 5, circuit board, 7, hole slot, 9, electric conductor, 11, near-end, 13, holding wire.
Embodiment
With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.
A kind of plasma TV as shown in Figure 1 with shielding case, comprise shielding case 1, shielding case 1 links to each other with the plasma TV shell of ground connection, accommodate electronic building brick 3 and circuit board 5 in the shielding case 1, shielding case 1 has hole slot 7,7 places dispose circuit board 5 at hole slot, circuit board 5 and electronic building brick 3 are connected by connecting line, the utility model preferred electron assembly is a signal processing circuit board, and, signal processing circuit board is connected with circuit board 5 by connecting line, signal processing circuit board sends a signal to circuit board 5 by connecting line, circuit board 5 is connected with shielding case 1 by electric conductor 9, has reduced the resistance between circuit board 5 and the shielding case 1, has effectively shielded electromagnetic interference.Circuit board 5 has at least one pad for welding electric conductor 11, electric conductor 11 1 ends and pad welding, and electric conductor 11 other ends are connected with shielding case 1.In the preferred embodiment of the present utility model in addition, circuit board 5 has the fixing installing hole of electric conductor 11 of a usefulness screw, by screw electric conductor 11 1 ends is fixed on the installing hole of circuit board 5, and electric conductor 11 other ends are connected with shielding case 1.Wherein, circuit board 5 is for having the multi-layer sheet of separate planes or having the larger area single sided board or have the larger area double sided board.Comparatively desirable state is that the electric conductor and shielding case 1 link that are connected with circuit board are near more good more, so, at hole slot 7 places near this circuit board 5 is near-end 11, electric conductor 9 is connected with the near-end 11 of shielding case 1, effectively reduce circuit board 5 to the resistance between the shielding case 1, improve the efficient of shield electromagnetic interference.Electric conductor 9 can preferably adopt ground wire herein.
As far as possible welding many ground wires on the circuit board 5 on the edge of circuit board 5 pad, after installing circuit board 5, the other end of the ground wire that welding is good is fixed on the shielding case 1, and the ground wire of circuit board 5 is linked to each other with the shell of plasma TV according to condition.Adopt the purpose of many ground wires to form the multipoint earthing network exactly, reduce the zone network of circuit board 5 self and the resistance between the casing ground as far as possible.Circuit board 5 directly links to each other with shielding case 1 by the short ground wire of length, because circuit board 5 has floor file or complete bottom, therefore the slit, slit of whole screen greatly reduces, shield effectiveness is clearly better, and needn't use magnet ring, promptly reduce cost, improve consistency again.
Should be appreciated that foregoing description only is in order to set forth the utility model.Those skilled in the art can make multiple replacement form and modification not breaking away under the situation of the present utility model.Therefore, the utility model is intended to all these replacement forms, modification and modification and is included in the protection range of appended claims.
Claims (10)
1. electronic equipment with shielding case, comprise shielding case (1), accommodate electronic building brick (3) and circuit board (5) in the described shielding case (1), described shielding case (1) has hole slot (7), locate to dispose circuit board (5) at hole slot (7), described circuit board (5) is connected by connecting line with electronic building brick (3), it is characterized in that: described circuit board (5) is connected with shielding case (1) by electric conductor (9).
2. electronic equipment as claimed in claim 1 is characterized in that: described circuit board (5) has at least one pad for welding electric conductor (9).
3. electronic equipment as claimed in claim 1 is characterized in that: described circuit board (5) has the fixing installing hole of electric conductor (5) of a usefulness screw.
4. electronic equipment as claimed in claim 1 is characterized in that: described circuit board (5) is for having the multi-layer sheet of separate planes or having the larger area single sided board or have the larger area double sided board.
5. electronic equipment as claimed in claim 1 is characterized in that: the hole slot (7) near described circuit board (5) locates to be near-end (11), and described electric conductor (9) is connected with the near-end (11) of shielding case (1).
6. plasma TV with shielding case, comprise shielding case (1), accommodate electronic building brick (3) and circuit board (5) in the described shielding case (1), described shielding case (1) has hole slot (7), locate to dispose circuit board (5) at hole slot (7), described circuit board (5) is connected by connecting line with electronic building brick (3), it is characterized in that: described circuit board (5) is connected with shielding case (1) by electric conductor (9).
7. the plasma TV with shielding case as claimed in claim 6 is characterized in that: described circuit board (5) has at least one pad for welding electric conductor (9).
8. the plasma TV with shielding case as claimed in claim 6 is characterized in that: described circuit board (5) has the fixing installing hole of electric conductor (5) of a usefulness screw.
9. the plasma TV with shielding case as claimed in claim 1 is characterized in that: described circuit board (5) is for having the multi-layer sheet of separate planes or having the larger area single sided board or have the larger area double sided board.
10. the plasma TV with shielding case as claimed in claim 1 is characterized in that: the hole slot (7) near described circuit board (5) locates to be near-end (11), and described electric conductor (9) is connected with the near-end (11) of shielding case (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820023167XU CN201197259Y (en) | 2008-05-30 | 2008-05-30 | Electronic equipment with shielding case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820023167XU CN201197259Y (en) | 2008-05-30 | 2008-05-30 | Electronic equipment with shielding case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201197259Y true CN201197259Y (en) | 2009-02-18 |
Family
ID=40416886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820023167XU Expired - Fee Related CN201197259Y (en) | 2008-05-30 | 2008-05-30 | Electronic equipment with shielding case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201197259Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115175441A (en) * | 2022-08-01 | 2022-10-11 | 哈尔滨理工大学 | Vacuum low dielectric constant and low conductivity micro-current transmission circuit board |
-
2008
- 2008-05-30 CN CNU200820023167XU patent/CN201197259Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115175441A (en) * | 2022-08-01 | 2022-10-11 | 哈尔滨理工大学 | Vacuum low dielectric constant and low conductivity micro-current transmission circuit board |
| CN115175441B (en) * | 2022-08-01 | 2024-03-12 | 哈尔滨理工大学 | Vacuum low dielectric constant and low conductivity micro-current transmission circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090218 Termination date: 20120530 |