CN2829319Y - Ventilation shield of signal shield box - Google Patents
Ventilation shield of signal shield box Download PDFInfo
- Publication number
- CN2829319Y CN2829319Y CN 200520129059 CN200520129059U CN2829319Y CN 2829319 Y CN2829319 Y CN 2829319Y CN 200520129059 CN200520129059 CN 200520129059 CN 200520129059 U CN200520129059 U CN 200520129059U CN 2829319 Y CN2829319 Y CN 2829319Y
- Authority
- CN
- China
- Prior art keywords
- ventilation
- shield
- case body
- gauze screen
- shielding case
- 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 - Lifetime
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The utility model relates to a ventilation shield of a signal shield box. The wall sides of the circumference of a shied box body which has the effects of electromagnetic wave shield are respectively provided with at least one hollowed-out ventilation inlet and a ventilation outlet; an air suction fan of an air suction device is arranged on the ventilation inlets; the periphery of the air suction fan is provided with a shield cover which has the effects of the electromagnetic wave shield; the outer side of the air suction fan is additionally provided with a shielding net; an exhaust fan of an air exhausting device is arranged on the ventilation outlet; the periphery of the exhaust fan is provided with a shield cover with shield effects; the space between the exhaust fan and the periphery of the ventilation outlet is additionally provided with a shielding net. The effect of the electromagnetic wave shield is formed at the ventilation inlets and the outlet by the shield cover and the shielding net. The resistance force of airflow can be effectively reduced by the design behind the flow direction of the airflow which is provided with the shielding net, and the efficiency of ventilation and heat radiation can be improved.
Description
[technical field]
The utility model relates to the ventilation screening arrangement of signal shielded box, is meant a kind of shielded box aeration structure that can effectively reduce gas-flow resistance, promote drafting efficiency especially.
[background technology]
According to present rules and regulations, accumulate the basis of research and development information simultaneously as improvement, at present most electronic product and various host circuit board are after the stage is finished in exploitation, how need carry out the test of correlation properties, and in the environment of general opening, have extremely complicated and serious Electromagnetic Interference (EMI) influences test accuracy easily; Therefore, the test of above-mentioned majority all must be implemented test in low Electromagnetic Interference (being even no Electromagnetic Interference) environment, to reach preferable accurate testing degree.
The signal shielded box basic structure that tradition is commonly seen is to establish an opening in the hollow shielding case body top side of a tool electromagnetic shielding effect, in the be pivoted shielding cover cap of a tool electromagnetic shielding effect of an avris of this opening, perimeter wall side in this shielding case body then is provided with a plurality of ventilating openings, in each ventilating opening or the outside one fan is set respectively, and the shielding new cover of a tool electromagnetic shielding effect is set in each fan appearance side, utilize each fan to be set up different exhausting directions, can make shielding case body in, the outer stable radiating airflow that forms, and the setting of each shielding new cover then can cooperate this shielding case body, shield cover cap and form a complete electromagnetic wave isolation effect;
Yet, according in theory hydromechanical, the barrier in flow direction the place ahead that is arranged at an air-flow is different with the two gas-flow resistance that is produced of barrier at the flow direction rear that is arranged at an air-flow, under general state, the barrier that is arranged at flow direction the place ahead of an air-flow can produce imitates big gas-flow resistance and sinuous flow; And in the above-mentioned structure, it can form bigger resistance because shielding new cover is the outside that is arranged at each fan to the air-flow of exhaust side, causes exhaust to hinder and the reduction drafting efficiency, and then influences its radiating effect.
[utility model content]
Because the ventilation shielding construction of the signal shielded box of commonly seeing has above-mentioned shortcoming, main purpose of the present utility model provides a kind of ventilation screening arrangement of signal shielded box, can go into, go out interruption-forming one electromagnetic shielding effect in the ventilation of shielding case body, and can effectively reduce the resistance of air-flow, promote the efficient of ventilation and heat.
The ventilation screening arrangement of a kind of signal shielded box of the present utility model, it is characterized in that: it comprises at least:
One shielding case body is a tool electromagnetic shielding effect and the hollow container with open top, is pivoted with a shielding cover cap in the avris of its open top, and the perimeter wall side of this shielding case body then is respectively equipped with the ventilation intake and the draft outlet of at least one hollow out;
One air intake device comprises the gauze screen of a blower fan and a tool electromagnetic shielding effect at least, and this blower fan is the ventilation intake that is arranged at this shielding case body, and this gauze screen then is the outside that is attached at this blower fan;
One air exhausting device, at least the gauze screen that comprises a ventilating fan and a tool electromagnetic shielding effect, this ventilating fan is the draft outlet that is arranged at this shielding case body, this gauze screen then is the inboard that is attached at this ventilating fan, remove and to form an electromagnetic shielding effect, also can make this gauze screen that the flow direction rear of air-flow is set, to reduce gas-flow resistance and to rise drafting efficiency.
This ventilating fan is to be embedded in the radome, and be fixed in by this radome outside the draft outlet of this shielding case body, to discharge the air in the shielding case body, this gauze screen then is to be located between this blower fan and the draft outlet periphery, utilize this radome, net to go into, to go out interruption-forming one electromagnetic shielding effect in the ventilation of shielding case body, and this gauze screen is provided with the design at the flow direction rear of air-flow, can effectively reduce the resistance of air-flow, promote the efficient of ventilation and heat, this is a main purpose of the present utility model.
As for detailed construction of the present utility model, application principle, effect and effect, then the explanation of doing with reference to following adjoint can be understood completely:
[description of drawings]
Fig. 1 is the structure decomposition map of the utility model first embodiment.
Fig. 2 is the combination schematic diagram of the utility model first embodiment.
Fig. 3 is combination section and the air flow path figure of the utility model first embodiment.
Fig. 4 is the combination schematic diagram of the utility model second embodiment.
Fig. 5 is the combination schematic diagram of the utility model the 3rd embodiment.
[embodiment]
Fig. 1 is the structure decomposition map of the utility model first embodiment, by it with reference to the combination schematic diagram of Fig. 2 and combination section and the air flow path figure of Fig. 3, can clearly find out, the utility model first embodiment mainly comprises: shielding case body 1, air intake device 2 and air exhausting device 3 etc. are partly, wherein this shielding case body 1 is the hollow container of a tool electromagnetic shielding effect and open top, avris in its open top is pivoted with a shielding cover cap 13, and these shielding cover cap 13 2 sides are to support with an elastic jackstay 14 respectively, the perimeter wall side of this shielding case body 1 then is respectively equipped with the ventilation intake 11 and the draft outlet 12 of at least one hollow out, air intake device comprises a radome 21, the gauze screen 23 of one blower fan 22 and a tool electromagnetic shielding effect, this radome 21 is ventilation intake 11 outsides of being fixed in shielding case body 1 with a side, the side in addition of radome 21 is provided with a ring flange 211, in this ring flange 211, form an accommodation space 212 that connects, can supply ccontaining this blower fan 22 of fixing, and extraneous air is imported in the shielding case body 1 by this blower fan 22, gauze screen 23 then is blower fan 22 outsides that are embedded in this accommodation space 212, air exhausting device 3 comprises a radome 31, the gauze screen 33 of one ventilating fan 32 and a tool electromagnetic wave isolation effect, this radome 31 is draft outlet 12 outsides of being fixed in shielding case body 1 with a side, the side in addition of radome 31 is provided with a ring flange 311, in this ring flange 311, form an accommodation space 312 that connects, can supply ccontaining this ventilating fan 32 of fixing, and by the air in the ventilating fan 32 discharge shielding case bodies 1, this gauze screen 33 then is to be located between this radome 31 and draft outlet 12 peripheries.
In the utility model said structure, this radome 21, gauze screen 23 form an electromagnetic shielding effect in ventilation intake 11 places that isolate casing 1, and cage 31, gauze screen 33 form an electromagnetic shielding effect in draft outlet 12 places of shielding case body 1, can effectively avoid Electromagnetic Interference; And this gauze screen 23,33 is arranged at the flow direction rear of air-flow respectively, then can effectively reduce the resistance and the sinuous flow of air-flow, uses the efficient that promotes ventilation and heat.
Fig. 4 is the combination schematic diagram of the utility model second embodiment, shown in this figure, the structure of the utility model second embodiment mainly is the structure based on first embodiment, it is that a ventilation intake and a draft outlet are set on the same side wall surface of shielding case body 10 peripheries at least, and should inhale, air exhausting device 2,3 is arranged at this respectively according to aforementioned manner and ventilates into, the outlet outside, use producing the ventilation and heat efficient different, to adapt to the different designs demand with aforementioned first example structure.
Fig. 5 is the combination schematic diagram of the utility model the 3rd embodiment, it is on two offside walls of a shielding case body 100 peripheries the symmetrical ventilation in a position to be set at least to go into, export, and should inhale, air exhausting device 2,3 is arranged at this respectively according to aforementioned manner and ventilates into, the outlet outside, use producing the ventilation and heat efficient different, to adapt to other different designs demand with aforementioned first and second example structure.
From the above mentioned as can be known, the ventilation screening arrangement of the utility model signal shielded box has the effect that reduces gas-flow resistance, promotes drafting efficiency really, has really had usability, novelty and progressive on the industry.
The above only is a preferred embodiment of the present utility model, is not to be used for limiting protection range of the present utility model.Be that all equalizations of doing according to the utility model change and modification, all should be protection range of the present utility model and contain.
Claims (3)
1. the ventilation screening arrangement of a signal shielded box, it is characterized in that: it comprises at least:
One shielding case body is a tool electromagnetic shielding effect and the hollow container with open top, is pivoted with a shielding cover cap in the avris of its open top, and the perimeter wall side of this shielding case body then is respectively equipped with the ventilation intake and the draft outlet of at least one hollow out;
One air intake device comprises the gauze screen of a blower fan and a tool electromagnetic shielding effect at least, and this blower fan is the ventilation intake that is arranged at this shielding case body, and this gauze screen then is the outside that is attached at this blower fan;
One air exhausting device comprises the gauze screen of a ventilating fan and a tool electromagnetic shielding effect at least, and this ventilating fan is the draft outlet that is arranged at this shielding case body, and this gauze screen then is the inboard that is attached at this ventilating fan.
2. the ventilation screening arrangement of signal shielded box as claimed in claim 1 is characterized in that: this blower fan is to be embedded at one by in the default accommodation space of radome, and this gauze screen then is the opening inner peripheral that is embedded at this accommodation space.
3. the ventilation screening arrangement of signal shielded box as claimed in claim 1 is characterized in that: this ventilating fan is to be embedded at one by in the default accommodation space of radome, and this gauze screen then is that to be located in draft outlet week of this radome and shielding case body intermarginal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129059 CN2829319Y (en) | 2005-11-07 | 2005-11-07 | Ventilation shield of signal shield box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520129059 CN2829319Y (en) | 2005-11-07 | 2005-11-07 | Ventilation shield of signal shield box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2829319Y true CN2829319Y (en) | 2006-10-18 |
Family
ID=37080867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520129059 Expired - Lifetime CN2829319Y (en) | 2005-11-07 | 2005-11-07 | Ventilation shield of signal shield box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2829319Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110392518A (en) * | 2019-08-22 | 2019-10-29 | 江南造船(集团)有限责任公司 | Electromagnetic shielding vent peculiar to vessel |
-
2005
- 2005-11-07 CN CN 200520129059 patent/CN2829319Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110392518A (en) * | 2019-08-22 | 2019-10-29 | 江南造船(集团)有限责任公司 | Electromagnetic shielding vent peculiar to vessel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20061018 |
|
| EXPY | Termination of patent right or utility model |