CN217063888U - Electromagnetic interference resistance's 4K high definition video decoder - Google Patents
Electromagnetic interference resistance's 4K high definition video decoder Download PDFInfo
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- CN217063888U CN217063888U CN202220463861.3U CN202220463861U CN217063888U CN 217063888 U CN217063888 U CN 217063888U CN 202220463861 U CN202220463861 U CN 202220463861U CN 217063888 U CN217063888 U CN 217063888U
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Abstract
The utility model discloses an electromagnetic interference resistance's 4K high definition video decoder, including shielding shell, power end cover and signal end cover are installed respectively to shielding shell's both ends, the sealing washer is all installed to the inboard of power end cover and signal end cover, two the sealing washer is sealed attached on shielding shell's both ends inner wall respectively, common cover is equipped with the shielding inner shell between power end cover and the signal end cover, install shielding baffle on the inner wall of shielding inner shell between two parties, power circuit board and decoding circuit board are installed respectively to the both sides that lie in shielding baffle in the shielding inner shell. The utility model discloses a double-deck shielding design increases the decoder to outside electromagnetic interference's shielding effect, keeps apart the shielding effect that increases the decoder to inside electromagnetic interference through dividing regional shielding, through active double-in double-out heat dissipation design, increases the radiating effect of decoder.
Description
Technical Field
The utility model relates to a video decoder field especially relates to an electromagnetic interference resistance's 4K high definition video decoder.
Background
The electromagnetic interference resistance of current high definition video decoder adopts to cover one deck metal casing usually and reaches the shielding effect, but individual layer metal casing's coverage area is limited, then the shielding effect is general, and can't shield isolation to internal power supply circuit part and signal circuit part, leads to the inside self electromagnetic interference that exists of decoder, and because the overlay type shielding leads to the decoder radiating effect relatively poor, the too high influence decoder circuit work of inside temperature leads to the speed of decoding to descend.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the 4K high definition video decoder of a kind of electromagnetic interference resistance who proposes.
In order to realize the purpose, the utility model adopts the following technical scheme:
the utility model provides an electromagnetic interference resistance's 4K high definition video decoder, includes shielding case, power end cover and signal end cover are installed respectively to shielding case's both ends, the sealing washer is all installed, two to the inboard of power end cover and signal end cover the sealing washer is sealed attached on shielding case's both ends inner wall respectively, the common cover is equipped with the shielding inner shell between power end cover and the signal end cover, install shielding baffle between two parties on the inner wall of shielding inner shell, power circuit board and decoding circuit board are installed respectively to the both sides that lie in shielding baffle in the shielding inner shell.
Preferably, the lateral wall of shielding shell goes up the symmetry and inlays and be equipped with two exhaust dust screens, lie in two exhaust dust screens punishment on shielding shell's the inside wall and install two radiator fan respectively.
Preferably, two air inlet notches are symmetrically formed in the upper wall and the lower wall of the shielding shell, and each air inlet notch is internally provided with an air inlet dust screen in a magnetic attraction manner.
Preferably, the side wall of the shielding inner shell is symmetrically and integrally bent to form two groups of corrugated heat dissipation surfaces, the overlook projection of the corrugated heat dissipation surfaces is perpendicular to the overlook projection of the side wall of the shielding outer shell for mounting the two heat dissipation fans, the shielding partition plate is inserted with the magnetic shielding interface terminal, and the power circuit board is electrically connected with the decoding circuit board through the magnetic shielding interface terminal.
Preferably, a power line is inserted and installed on the outer side wall of the power end cover, the power line extends into the shielding inner shell and is connected with the power circuit board, two fan plugs are symmetrically installed between the shielding outer shell and the shielding inner shell on the inner side wall of the power end cover, and the two fan plugs are electrically connected with the two cooling fans.
Preferably, a plurality of signal ports are embedded and installed on the outer side wall of the signal end cover, and each signal port is electrically connected with the decoding circuit board.
The utility model discloses beneficial effect: the shielding effect of the decoder on external electromagnetic interference is increased through a double-layer shielding design, the shielding effect of the decoder on internal electromagnetic interference is increased through regional shielding and isolation, and the heat dissipation effect of the decoder is increased through an active double-in double-out heat dissipation design.
Drawings
Fig. 1 is a schematic structural diagram of an electromagnetic interference prevention 4K high definition video decoder according to the present invention;
fig. 2 is a side sectional view of the electromagnetic interference resistance 4K high definition video decoder of the present invention.
In the figure: the air inlet dust screen comprises a shielding outer shell 1, an exhaust dust screen 11, an air inlet notch 12, an air inlet dust screen 13, a power supply end cover 2, a power supply wire 21, a fan plug 22, a signal end cover 3, a signal port 31, a sealing ring 4, a shielding inner shell 5, a shielding partition plate 51, a corrugated heat dissipation surface 52, a magnetic shielding interface terminal 53, a power supply circuit board 6, a decoding circuit board 7 and a heat dissipation fan 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, an electromagnetic interference resistance's 4K high definition video decoder, including shielding shell 1, power end cover 2 and signal end cover 3 are installed respectively to shielding shell 1's both ends, sealing washer 4 is all installed to power end cover 2 and signal end cover 3's inboard, two sealing washers 4 are sealed attached on shielding shell 1's both ends inner wall respectively, the common cover is equipped with shielding inner shell 5 between power end cover 2 and the signal end cover 3, install shielding baffle 51 between two parties on the inner wall of shielding inner shell 5, power circuit board 6 and decoding circuit board 7 are installed respectively to the both sides that lie in shielding baffle 51 in the shielding inner shell 5.
The power end cover 2 and the signal end cover 3 are made of metal materials, the double-layer shielding is realized by matching the shielding outer shell 1 and the shielding inner shell 5, the shielding effect on external electromagnetic interference is better, the power circuit board 6 and the decoding circuit board 7 are installed in the shielding inner shell 5 through the shielding partition plate 51 in an area, the internal shielding of a decoder circuit is realized, processing components of power current and signal current are separated, and the mutual interference of the internal components is reduced.
Two exhaust dust screens 11 are symmetrically embedded in the side wall of the shielding shell 1, and two heat dissipation fans 8 are respectively installed on the inner side wall of the shielding shell 1 at the positions of the two exhaust dust screens 11.
The during operation of power supply circuit board 6 and decoding circuit board 7 produces the heat, and the heat conducts to shielding shell 1 in through shielding inner shell 5, and radiator fan 8 work can take away the heat in shielding shell 1 fast, reduces the heat of power supply circuit board 6 and decoding circuit board 7 during operation, avoids overheated speed of decoding to descend that leads to.
Two air inlet notches 12 are symmetrically formed in the upper wall and the lower wall of the shielding shell 1, and an air inlet dust screen 13 is magnetically attracted and installed in each air inlet notch 12.
When 8 work of radiator fan blows off heat in with shielded enclosure 1 for shielded enclosure 1's internal pressure reduces, makes make outside air get into shielded enclosure 1 from inlet slot opening 12 in, then the air is when getting into shielded enclosure 1, is filtered by the dust screen 13 that admits air, and the dust screen 13 that admits air can be dismantled and wash, avoids dust accumulation, convenient to use.
Two groups of corrugated heat dissipation surfaces 52 are symmetrically and integrally bent on the side wall of the shielding inner shell 5, and the top projection of the corrugated heat dissipation surfaces 52 is perpendicular to the top projection of the side wall of the shielding outer shell 1 provided with the two heat dissipation fans 8.
The corrugated heat dissipation surface 52 can increase the contact area between the shielding inner shell 5 and the air, so that the air flow can take away the heat on the corrugated heat dissipation surface 52 quickly, the heat dissipation speed is increased, and the heat dissipation fan 8 is located at the positions of the wave crests and the wave troughs, so that the air flow can flow smoothly along the wave troughs, the flow direction of the heat dissipation air flow is more reasonable, and the heat dissipation efficiency is increased.
Insert on the lateral wall of power end cover 2 and establish and install power cord 21, power cord 21 extends to in the shielding inner shell 5 and is connected with power circuit board 6, lie in on the inside wall of power end cover 2 that two fan plugs 22 are installed to the symmetry between shielding outer shell 1 and the shielding inner shell 5, two fan plugs 22 and two 8 electric connection of radiator fan, it installs a plurality of signal ports 31 to inlay on the lateral wall of signal end cover 3, the equal electric connection decoding circuit board 7 of every signal port 31, it is equipped with magnetism shielding interface terminal 53 to insert on the shielding baffle 51, power circuit board 6 and decoding circuit board 7 pass through magnetism shielding interface terminal 53 electric connection.
The power line 21, the power circuit board 6 and the cooling fan 8 are shielded and isolated from the decoding circuit board 7 and the signal port 31, so that electromagnetic radiation generated by large current is prevented from interfering with weak current signals.
When the utility model is used, the heat radiation fan 8 is connected with the fan plug 22, the power line 21 is connected with the power circuit board 6, the power circuit board 6 is connected with the magnetic shielding interface terminal 53, the power end cover 2 is covered, the decoding circuit board 7 is connected with the magnetic shielding interface terminal 53, a plurality of signal ports 31 are connected with the decoding circuit board 7, the signal end cover 3 is covered, the power line 21 is connected with an external power supply, the signal port 31 is connected with an external video device, when the utility model is in use, the shielding outer shell 1 and the shielding inner shell 5 shield the external electromagnetic radiation interference, the shielding inner shell 5 and the shielding clapboard 51 shield the internal electromagnetic radiation interference, the heat generated in work is taken out of the shielding outer shell 1 by the directional airflow generated by the heat radiation fan 8, the external air enters the shielding outer shell 1 to reduce the temperature of the shielding inner shell 5, the heat radiation speed of the power circuit board 6 and the decoding circuit board 7 is accelerated, namely, the temperature of the power supply circuit board 6 and the decoding circuit board 7 is lowered, and the decoding speed is increased.
The above, only be the embodiment of the preferred of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, which are designed to be replaced or changed equally, all should be covered within the protection scope of the present invention.
Claims (6)
1. The utility model provides an electromagnetic interference resistance's 4K high definition video decoder, includes shielding shell (1), its characterized in that, power end cover (2) and signal end cover (3) are installed respectively to the both ends of shielding shell (1), sealing washer (4) are all installed, two to the inboard of power end cover (2) and signal end cover (3) sealing washer (4) are sealed respectively attached on the both ends inner wall of shielding shell (1), the common cover is equipped with shielding inner shell (5) between power end cover (2) and signal end cover (3), install shielding baffle (51) between two parties on the inner wall of shielding inner shell (5), power circuit board (6) and decoding circuit board (7) are installed respectively to the both sides that lie in shielding baffle (51) in shielding inner shell (5).
2. The electromagnetic interference prevention 4K high definition video decoder according to claim 1, wherein two air exhaust dust screens (11) are symmetrically embedded on the side wall of the shielding case (1), and two heat dissipation fans (8) are respectively installed on the inner side wall of the shielding case (1) at the two air exhaust dust screens (11).
3. The electromagnetic interference prevention 4K high-definition video decoder according to claim 1, wherein two air inlet slots (12) are symmetrically formed in the upper wall and the lower wall of the shielding shell (1), and an air inlet dust screen (13) is magnetically mounted in each air inlet slot (12).
4. The decoder according to claim 2, wherein the side walls of the shielding inner shell (5) are symmetrically and integrally thermally bent to form two sets of corrugated heat dissipation surfaces (52), the top view projection of the corrugated heat dissipation surfaces (52) is perpendicular to the top view projection of the side walls of the shielding outer shell (1) on which the two heat dissipation fans (8) are mounted, the shielding partition (51) is inserted with magnetic shielding interface terminals (53), and the power circuit board (6) and the decoding circuit board (7) are electrically connected through the magnetic shielding interface terminals (53).
5. The decoder according to claim 2, wherein the power line (21) is inserted and installed on the outer side wall of the power end cap (2), the power line (21) extends into the shielding inner shell (5) and is connected to the power circuit board (6), two fan plugs (22) are symmetrically installed on the inner side wall of the power end cap (2) between the shielding outer shell (1) and the shielding inner shell (5), and the two fan plugs (22) are electrically connected to the two cooling fans (8).
6. The decoder of claim 1, wherein a plurality of signal ports (31) are embedded in an outer side wall of the signal end cap (3), and each signal port (31) is electrically connected to the decoding circuit board (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220463861.3U CN217063888U (en) | 2022-03-03 | 2022-03-03 | Electromagnetic interference resistance's 4K high definition video decoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220463861.3U CN217063888U (en) | 2022-03-03 | 2022-03-03 | Electromagnetic interference resistance's 4K high definition video decoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217063888U true CN217063888U (en) | 2022-07-26 |
Family
ID=82489380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220463861.3U Active CN217063888U (en) | 2022-03-03 | 2022-03-03 | Electromagnetic interference resistance's 4K high definition video decoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217063888U (en) |
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2022
- 2022-03-03 CN CN202220463861.3U patent/CN217063888U/en active Active
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