LED sound transmission module meeting DCI physical safety
By setting through holes and hollow structures on the PCB board of the LED display screen, combined with sound-absorbing media and rigid protective materials, the problem of low physical security of LED display screens is solved, and DCI standard compliance and content protection are achieved.
Patent Information
- Application Number
- CN202520471360.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing LED displays do not meet the film industry standard DCI, have low physical security, and are at risk of content theft.
The PCB board with through holes, the longitudinal and transverse beams with hollow structure cover the PCB board trace area, and the through holes and hollow structure are filled with sound-absorbing medium. The exterior is protected with rigid sound-absorbing material, and the surface of the through holes is sprayed with conformal coating. It is fixed together with the mask and support frame.
While ensuring sound transmission, it effectively prevents content theft and meets DCI's physical security requirements for LED screens.
Smart Images
Figure CN223911385U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to display screen technical field, concretely relates to a LED sound transmission module satisfying DCI physical safety. BACKGROUND
[0002] LED display screen can realize high resolution, high brightness, wide color gamut and other high standard video effects, and is applied to cinema, and is expected to become the development trend of future cinema. In order to ensure good viewing experience, LED display screen must have certain sound transmission rate. The commonly used method is to open holes on LED lamp panel and plastic bottom shell at the same time, or directly remove plastic bottom shell, which will cause signal wiring and via hole of LED lamp panel to be exposed, and there is a risk of content theft, and the design scheme does not meet the physical security requirement of anti-recording of DCI of film industry standard.
[0003] In summary, the prior art has the following problems: the existing LED display screen does not meet the DCI of film industry standard, and the physical safety is low. UTILITY MODEL CONTENT
[0004] The utility model provides a LED sound transmission module satisfying DCI physical safety, and solves the technical problem of how to meet the DCI of film industry standard and improve the physical safety.
[0005] To achieve the above purpose, the utility model provides a LED sound transmission module satisfying DCI physical safety, which comprises:
[0006] Mask, lamp pearl, PCB board and support frame are provided.
[0007] The PCB board is provided with transverse or longitudinal through holes, and the back of the PCB board is provided with a protection device.
[0008] The support frame comprises longitudinal beams and cross beams for supporting the PCB board, the protection device covers the area between the longitudinal beams and the cross beams and outside the through holes, and the protection device is pasted or sprayed on the back of the PCB board.
[0009] Specifically, the cross section of the through hole is rectangular or elliptical, the sizes of the front and rear openings of the through hole are inconsistent, the through hole is in the form of a ladder or a circular platform, and the inner surface of the through hole is sprayed with three-proof paint.
[0010] Specifically, the mask is pasted on the front of the PCB board, avoiding the through hole and lamp pearl area, and the support frame is fixed with the PCB board through screws.
[0011] The support frame is fixed at the outer edge of the PCB board.
[0012] The longitudinal beams and the cross beams are fixedly connected to the inner wall of the support frame.
[0013] Specifically, the longitudinal beams and the cross beams are hollow structures, and the coverage area of the longitudinal beams and the cross beams is the wiring area of the PCB board.
[0014] The hollow structure is fixedly provided with sound absorption medium.
[0015] The beneficial technical effects of the above technical solution are that the LED sound transmission screen solves the problem of not meeting the DCI physical safety, and ensures the sound transmission effect of the LED box body, and avoids the risk of stealing the played content. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is a structural schematic view of a LED sound transmission module meeting DCI physical safety according to an embodiment of the present application;
[0017] Figure 2 is a structural schematic view of the front of a LED sound transmission module meeting DCI physical safety according to an embodiment of the present application;
[0018] Figure 3 is a structural schematic view of the back of a LED sound transmission module meeting DCI physical safety according to an embodiment of the present application;
[0019] Figure 4 is a structural schematic view of the side of a LED sound transmission module meeting DCI physical safety according to an embodiment of the present application;
[0020] Figure 5 is an enlarged schematic view of a LED sound transmission module meeting DCI physical safety according to an embodiment of the present application.
[0021] BRIEF DESCRIPTION OF DRAWINGS
[0022] 1, face shield; 2, lamp bead; 3, PCB board; 4, support frame; 5, through hole; 6, protection device; 7, longitudinal beam; 8, cross beam; 9, hollow structure; 10, sound absorption medium. DETAILED DESCRIPTION
[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0024] The embodiments of the present application provide a LED sound transmission module meeting DCI physical safety, as shown inFigure 1 As shown, it includes: face mask 1, LED beads 2, PCB board 3 and support frame 4;
[0025] like Figure 3 As shown, the PCB board 3 has horizontal or vertical through holes 5, and a protective device 6 is provided on the back of the PCB board 3; the support frame 4 includes longitudinal beams 7 and horizontal beams 8 for supporting the PCB board 3, the longitudinal beams 7 and the horizontal beams 8 are dotted frame areas, and the longitudinal beams 7 and the horizontal beams 8 are fixedly connected to the inner wall of the support frame 4; the longitudinal beams 7 and the horizontal beams 8 are hollow structures 9, and the area covered by the longitudinal beams 7 and the horizontal beams 8 is the wiring area of the PCB board 3; the protective device 6 covers the area between the longitudinal beams 7 and the horizontal beams 8 and the area other than the through holes 5.
[0026] The face mask 1 is attached to the front side of the PCB board 3, avoiding the through hole 5 and the area of the LED beads 2. Specifically, each LED bead forms an LED pixel unit, and through holes are inserted between the LED beads. The face mask is positioned above the PCB board, in direct contact with it, while avoiding the LED beads. The support frame 4 is fixed to the PCB board 3 with screws; the support frame 4 is fixed at the outer edge of the PCB board 3; as shown... Figure 2 As shown, through holes 5 are provided on the PCB board, and the through holes 5 are evenly distributed between the LED beads 2.
[0027] Both the longitudinal beam 7 and the transverse beam 8 are hollow structures 9. Sound-absorbing media 10 are fixed within the hollow structures 9 using adhesives or other methods, protecting the PCB board 3 trace area and achieving physical safety for DCI (Discrete Integrated Circuit). In this case, the sound-absorbing media becomes part of the physical safety protection of DCI. Sound-absorbing media include, but are not limited to, polyurethane, porous materials, and sound-absorbing cotton, achieving internal sound absorption and echo cancellation.
[0028] The protective device 6 is affixed or sprayed onto the back of the PCB board, covering the area between the longitudinal beams 7 and the transverse beams 8, and excluding the through holes 5. The protective device 6 uses a rigid sound-absorbing material or a rigid spray coating material with sound-absorbing properties to protect the PCB board and achieve DCI physical safety, while also absorbing reflected sound.
[0029] Through hole 5 penetrates the PCB board from both the front and back. Figure 4 for Figure 3 Side view of the section along the dashed line, from Figure 4 As can be seen, the diameter of the through hole gradually decreases from front to back, and its cross-section is trapezoidal or frustum-shaped. The surface of the through hole is coated with conformal coating. To more clearly show the shape of the through hole, Figure 5 This is an enlarged schematic diagram of the through hole on the sound-permeable module. The cross-section of the through hole is rectangular or elliptical, which can effectively improve the sound amplification effect.
[0030] The utility model has the following beneficial effects:
[0031] The LED sound transmission module adopts the technical scheme of the PCB plate with the through hole + hard protection device, guarantees the sound transmission effect, effectively avoids the risk that the playing content is stolen, and meets the requirement of the DCI on the physical safety of the LED screen.
[0032] The above is only a specific embodiment of the utility model, and is not used to limit the range of the utility model. The various components of the utility model can be combined with each other under the condition of no conflict, and any equivalent changes and modifications made by any person skilled in the art without departing from the concept and principle of the utility model shall belong to the range of protection of the utility model.
Claims
1. An LED acoustic transmission module satisfying DCI physical security, characterized in that, The utility model relates to a kind of LED mask, including: Face guard (1), lamp pearl (2), PCB board (3) and support frame (4); The PCB board (3) is provided with transverse or longitudinal through hole (5), the back of the PCB board (3) is provided with protective device (6); The support frame (4) includes longitudinal beam (7) and crossbeam (8) for supporting the PCB board (3);The protective device (6) covers the area between the longitudinal beam (7) and the crossbeam (8) and the through hole (5) except;The protective device (6) is pasted or sprayed on the back of the PCB board (3). 2.The LED transparent sound module satisfying DCI physical safety according to claim 1, wherein, The cross section of the through hole (5) is rectangular or elliptical, the size of the front and rear two orifices of the through hole (5) is inconsistent, the through hole (5) is ladder-shaped or circular platform, the inner surface of the through hole (5) is sprayed with three-proof paint. 3.The LED transparent sound module satisfying DCI physical safety according to claim 1, wherein, The face guard (1) is pasted on the front of the PCB board (3), avoiding the through hole (5) and lamp pearl (2) area, and the support frame (4) is fixed with the PCB board (3) by screw; The support frame (4) is fixed at the outer edge of the PCB board (3); The longitudinal beam (7) and the crossbeam (8) are fixedly connected to the inner wall of the support frame (4). 4.The LED transparent sound module satisfying DCI physical safety according to claim 1, wherein, The longitudinal beam (7) and the crossbeam (8) are both hollow structure (9), and the covered area of the longitudinal beam (7) and the crossbeam (8) is the wiring area of the PCB board (3); The hollow structure (9) is fixed with sound-absorbing medium (10).