CN211352980U - Shielding box body - Google Patents
Shielding box body Download PDFInfo
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- CN211352980U CN211352980U CN202020235756.5U CN202020235756U CN211352980U CN 211352980 U CN211352980 U CN 211352980U CN 202020235756 U CN202020235756 U CN 202020235756U CN 211352980 U CN211352980 U CN 211352980U
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Abstract
The utility model relates to an electromagnetic shield device discloses a shielding box, including electrically conductive frame, be equipped with the luminescent panel in the electrically conductive frame, electrically conductive frame one side is equipped with the opening, the opening part is equipped with printing opacity rete carrier in order to seal the opening, the surface of printing opacity rete carrier is equipped with transparent electrically conductive rete, transparent electrically conductive rete with electrically conductive frame contacts. The utility model discloses can effectively solve the electromagnetic radiation interference problem of luminescent panel, can guarantee the normal luminous demonstration of luminescent panel again.
Description
Technical Field
The utility model relates to an electromagnetic shield assembly specifically relates to a shielding box.
Background
The light-emitting panel used as an electronic product will inevitably generate electromagnetic radiation, thereby interfering with the normal operation of other electrical appliances and even causing health hazard to human bodies, and the radiation intensity of the light-emitting panel depends on the light-emitting power and the frequency sweeping operating frequency of the panel. During the vertical scanning of the panel, a large amount of di/dt is generated, and according to maxwell's equation, the changing current can generate a changing magnetic field, which in turn generates a changing current, thereby forming electromagnetic radiation interference.
Among the methods for solving the problem of electromagnetic radiation interference, electromagnetic shielding is the most basic and effective method, but the conventional electromagnetic shielding method in which the radiation source is placed in a metal shielding box cannot effectively solve the problem of electromagnetic radiation interference of the light-emitting panel because the metal shielding box has no light transmittance and thus affects the luminous display of the light-emitting panel.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a shielding box is provided, the electromagnetic radiation interference problem of luminescent panel can effectively be solved, the normal luminous demonstration of luminescent panel can be guaranteed again.
In order to solve the technical problem, the utility model provides a shielding box, including electrically conductive frame, be equipped with the luminescent panel in the electrically conductive frame, electrically conductive frame one side is equipped with the opening, the opening part is equipped with printing opacity rete carrier in order to seal the opening, the surface of printing opacity rete carrier is equipped with transparent electrically conductive rete, transparent electrically conductive rete with electrically conductive frame contacts.
Preferably, the transparent conductive film layer is an ITO film layer or an FTO film layer.
Preferably, a conductive buffer member is arranged at the contact position of the transparent conductive film layer and the conductive outer frame.
Preferably, the conductive buffer is conductive rubber.
Preferably, the light-transmitting film layer carrier is made of SiO2Or a light-transmitting carrier made of PC or PMMA.
Preferably, the transparent film layer carrier is located inside the conductive outer frame, and the transparent conductive film layer is in contact with the inner wall of the conductive outer frame at the periphery of the opening.
Preferably, the light-transmitting film layer carrier is tightly propped against the inner turned edge of the inner wall of the conductive outer frame at the periphery of the opening through a fastening structure.
Preferably, the fastening structure includes a fixing plate and a fastening bolt, the fixing plate is fixed on the inner wall of the conductive outer frame, the fastening bolt penetrates through the fixing plate, and the free end of the fastening bolt is tightly pressed against the transparent film layer carrier.
Preferably, the luminescent panel includes PCB circuit board, PCB circuit board is close to the one side of printing opacity rete carrier is fixed with LED lamp pearl, and its one side of keeping away from printing opacity rete carrier is fixed with IC chip.
Preferably, the conductive outer frame is a metal outer frame.
The utility model discloses a set up printing opacity rete carrier at the opening part of electrically conductive frame, and be equipped with transparent conductive film layer on the surface of printing opacity rete carrier, utilize transparent conductive film layer's high conductivity on the one hand, make transparent conductive film layer with electrically conductive frame contacts to switch on and forms the current path, and then produces closed eddy current loss route, converts aerial electromagnetic radiation energy into heat energy consumption, realizes the effect of electromagnetic shield; on the other hand, the light emitted by the light-emitting panel can be transmitted by utilizing the good light transmission of the light-transmitting film carrier and the transparent conductive film, so that the normal light-emitting display of the light-emitting panel is ensured.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a sectional view a-a of fig. 1 (excluding the light emitting panel).
Description of the reference numerals
1 conductive frame 2 light transmission film layer carrier
3 PCB 4 LED lamp pearl
5 IC chip 6 transparent conductive film layer
7 conductive rubber 8 fixing plate
9 fastening bolt
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
As shown in fig. 1, the utility model provides a shielding box, including electrically conductive frame 1, be equipped with the luminescent panel in the electrically conductive frame 1, electrically conductive frame 1 one side is equipped with the opening, the opening part is equipped with printing opacity rete carrier 2 in order to seal the opening, the surface of printing opacity rete carrier 2 is equipped with transparent electrically conductive rete 6, transparent electrically conductive rete 6 with electrically conductive frame 1 contacts.
The utility model discloses a set up printing opacity rete carrier 2 at the opening part of electrically conductive frame 1, and be equipped with transparent conductive film layer 6 on the surface of printing opacity rete carrier 2, utilize transparent conductive film layer 6's high conductivity on the one hand, make transparent conductive film layer 6 with electrically conductive frame 1 contacts and switches on and form the electric current route, and then produce closed eddy current loss route, convert aerial electromagnetic radiation energy into heat energy consumption, realize the effect of electromagnetic shield; on the other hand, the light emitted by the light-emitting panel can be transmitted by utilizing the good light transmission of the light-transmitting film carrier 2 and the transparent conductive film 6, so that the normal light-emitting display of the light-emitting panel is ensured.
In this embodiment, the transparent conductive film layer 6 is an ITO (indium tin oxide) film layer or an FTO (tin dioxide) film layer.
In this embodiment, a conductive buffer is disposed at a contact position between the transparent conductive film layer 6 and the conductive outer frame 1.
The conductive buffer part is arranged at the contact part of the transparent conductive film layer 6 and the conductive outer frame 1, on one hand, the transparent conductive film layer 6 is tightly combined with the conductive outer frame 1 through the conductive buffer part, so that the electromagnetic radiation is prevented from leaking out due to unreliable contact of the transparent conductive film layer 6 and the conductive outer frame 1, and the electromagnetic shielding effect without dead angles can be realized; on the other hand, as the conductive buffer part has mechanical buffer property, the transparent conductive film layer 6 and the conductive outer frame 1 are connected through the conductive buffer part, so that part of mechanical impact can be relieved, and the problem of seam caused by machining error and material preheating deformation can be avoided.
Preferably, the conductive buffer is a conductive rubber 7.
In the present embodiment, theThe transparent film carrier 2 is made of SiO2Or a light-transmitting carrier made of PC or PMMA.
In this embodiment, the transparent film layer carrier 2 is located inside the conductive frame 1, and the transparent conductive film layer 6 is in contact with the inner wall of the conductive frame 1 at the periphery of the opening.
Specifically, the transparent film layer carrier 2 is tightly pressed against the inner turned edge of the inner wall of the conductive outer frame 1 at the periphery of the opening through a fastening structure.
Therefore, the transparent film carrier 2 is fixed between the fastening structure and the inward flange of the inner wall of the conductive outer frame 1, so that the transparent film carrier 2 cannot shake or displace, the connection tightness between the transparent film carrier 2 and the conductive outer frame 1 is ensured, the transparent conductive film 6 is further tightly combined with the conductive outer frame 1, and the electromagnetic shielding effect is ensured.
Further specifically, the fastening structure includes a fixing plate 8 and a fastening bolt 9, the fixing plate 8 is fixed on the inner wall of the conductive outer frame 1, the fastening bolt 9 penetrates through the fixing plate 8, and the free end of the fastening bolt 9 abuts against the transparent film carrier 2, so that the transparent film carrier 2 abuts against the inner turned edge of the inner wall of the conductive outer frame 1 at the periphery of the opening.
Wherein, the end of the free end of the fastening bolt 9 abutting against the transparent film carrier 2 can be fixed with a flat plate or a rubber pad, thereby avoiding the transparent film carrier 2 from being compressed and damaged.
In addition, the fastening structure may also include a fixing plate 8 and a spring connected to one side of the fixing plate 8, a free end of the spring abuts against the transparent film carrier 2, and the fixing plate 8 is fixed on the inner wall of the conductive outer frame 1 through a bolt; or the fastening structure can be an L-shaped bending plate, the L-shaped bending plate comprises a tightening plate and a connecting plate, the tightening plate is tightened on the light-transmitting film carrier 2, and the connecting plate is fixed in the conductive outer frame 1 through a bolt, so that the light-transmitting film carrier 2 is tightened on the inner turned edge of the inner wall of the conductive outer frame 1 at the periphery of the opening.
In this embodiment, the luminescent panel includes PCB circuit board 3, PCB circuit board 3 is close to the one side of printing opacity rete carrier 2 is fixed with LED lamp pearl 4, and it is kept away from the one side of printing opacity rete carrier 2 is fixed with IC chip 5.
In the present embodiment, the conductive frame 1 is preferably a metal frame, but may be a non-metal frame with a metal layer plated on the surface.
As a preferred embodiment, as shown in FIG. 2, the light-transmitting film layer carrier 2 is made of SiO2The transparent conductive film layer 6 is an ITO film layer, namely, SiO2And (3) plating an ITO film layer on the prepared light-transmitting carrier by adopting film coating processes such as electron beam thermal evaporation, magnetron sputtering and the like, thus obtaining the ITO conductive glass. The contact position of the ITO conductive glass and the conductive outer frame 1 is provided with conductive rubber 7, and the conductive rubber 7 is positioned between the ITO conductive glass and the conductive outer frame 1 and used for generating pretightening force so as to eliminate the seam problem caused by machining errors and thermal deformation.
The fastening structure comprises two fixing plates 8 and two fastening bolts 9, the two fixing plates 8 are respectively fixed on the inner walls of the two sides of the conductive outer frame 1, at least two fastening bolts 9 are arranged on each fixing plate 8, each fastening bolt 9 penetrates through the fixing plate 8, and the free end of each fastening bolt 9 is tightly propped on the ITO conductive glass, so that the ITO conductive glass is tightly propped on the inner turned edge of the inner wall of the conductive outer frame 1 at the periphery of the opening, the ITO conductive glass cannot shake or shift, the connection tightness of the ITO conductive glass and the conductive outer frame 1 is ensured, the ITO film layer is further enabled to be tightly combined with the conductive outer frame 1, and the electromagnetic shielding effect is ensured. The distance between the ITO conductive glass and the inner flange of the inner wall of the conductive outer frame 1 can be adjusted by adjusting the fastening bolt 9, so that the aim of finely adjusting the pretightening force of the conductive rubber 7 is fulfilled.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.
In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.
Claims (10)
1. The utility model provides a shielding box, its characterized in that includes electrically conductive frame (1), be equipped with the luminescent panel in electrically conductive frame (1), electrically conductive frame (1) one side is equipped with the opening, the opening part is equipped with printing opacity rete carrier (2) in order to seal the opening, the surface of printing opacity rete carrier (2) is equipped with transparent electrically conductive rete (6), transparent electrically conductive rete (6) with electrically conductive frame (1) contacts.
2. Shielding cage according to claim 1, characterized in that said transparent conductive film layer (6) is an ITO film layer or an FTO film layer.
3. The shielding box body according to claim 1, wherein a conductive buffer is arranged at the contact position of the transparent conductive film layer (6) and the conductive outer frame (1).
4. A shielding cage according to claim 3, characterized in that said conductive buffer is a conductive rubber (7).
5. Shielding cage according to claim 1, wherein said light-transmissive film layer carrier (2) is made of SiO2Or a light-transmitting carrier made of PC or PMMA.
6. The shielding box according to any one of claims 1 to 5, wherein the light-transmitting film layer carrier (2) is located inside the conductive outer frame (1), and the transparent conductive film layer (6) is in contact with the inner wall of the conductive outer frame (1) at the periphery of the opening.
7. The shielding box body according to claim 6, characterized in that the light-transmitting film layer carrier (2) is tightly pressed against the inner turned edge of the inner wall of the conductive outer frame (1) at the periphery of the opening through a fastening structure.
8. The shielding box body according to claim 7, wherein the fastening structure comprises a fixing plate (8) and a fastening bolt (9), the fixing plate (8) is fixed on the inner wall of the conductive outer frame (1), the fastening bolt (9) penetrates through the fixing plate (8), and the free end of the fastening bolt (9) abuts against the light-transmitting film carrier (2).
9. The shielding box body according to any one of claims 1 to 5, wherein the light-emitting panel comprises a PCB (3), LED beads (4) are fixed on one surface of the PCB (3) close to the light-transmitting film carrier (2), and IC chips (5) are fixed on one surface of the PCB (3) far away from the light-transmitting film carrier (2).
10. Shielding box according to one of claims 1 to 5, wherein the conductive casing (1) is a metal casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020235756.5U CN211352980U (en) | 2020-02-28 | 2020-02-28 | Shielding box body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020235756.5U CN211352980U (en) | 2020-02-28 | 2020-02-28 | Shielding box body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211352980U true CN211352980U (en) | 2020-08-25 |
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ID=72099652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020235756.5U Active CN211352980U (en) | 2020-02-28 | 2020-02-28 | Shielding box body |
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| Country | Link |
|---|---|
| CN (1) | CN211352980U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111246720A (en) * | 2020-02-28 | 2020-06-05 | 华域视觉科技(上海)有限公司 | Shielding box body |
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2020
- 2020-02-28 CN CN202020235756.5U patent/CN211352980U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111246720A (en) * | 2020-02-28 | 2020-06-05 | 华域视觉科技(上海)有限公司 | Shielding box body |
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