A directional sound-emitting screen lower line and directional sound-emitting screen

Abstract

This utility model discloses a lower wire of a directional sound-emitting screen and the directional sound-emitting screen itself. The lower wire is fitted to the upper wire of the directional sound-emitting screen. The lower wire is divided into an inner functional area and a non-functional area located outside the functional area. The lower wire includes a substrate layer and an insulating layer. The insulating layer is disposed on the substrate layer, and the periphery of the insulating layer in the non-functional area has grooves for accommodating protrusions formed on the upper wire of the directional sound-emitting screen. This utility model can avoid the phenomenon of bulges on the finished product after the upper and lower wires are fitted together, which would lead to defects in the finished product, thereby significantly improving the yield rate of the finished product.

Description

Technical Field

[0001] This utility model relates to the field of directional sound generation technology, specifically to a directional sound generation screen assembly and a directional sound generation screen. Background Technology

[0002] A directional sound-emitting screen is a type of directional loudspeaker. It includes an upper wire and a lower wire that are attached to a frame. Each of the upper and lower wires is plated with a conductive layer, which serves as the positive and negative electrodes, respectively. When energized, the upper wire vibrates and produces sound under the influence of an alternating voltage. To insulate and isolate the upper and lower wires, an insulating layer is also provided on each wire.

[0003] However, during the bonding of the upper and lower wires of the directional sound-emitting screen, it was found that foreign object protrusions appeared at the edge of the insulating layer of the upper wire during processing. When it was bonded with the lower wire, the protrusions on the upper wire would cause bulges on the appearance of the finished product, resulting in defects.

[0004] Therefore, a solution needs to be studied to address the problem of bulges on the finished products causing defects. Utility Model Content

[0005] The purpose of this utility model is to provide a lower wire for a directional sound-emitting screen and a directional sound-emitting screen.

[0006] To achieve the above objectives, on the one hand, this utility model proposes a lower line of a directional sound-emitting screen, wherein the lower line is fitted with the upper line of the directional sound-emitting screen. The lower line is divided into an inner functional area and a non-functional area located outside the functional area. The lower line includes a substrate layer and an insulating layer. The insulating layer is disposed on the substrate layer, and the insulating layer has grooves on the four periphery of the non-functional area for accommodating protrusions formed on the upper line of the directional sound-emitting screen.

[0007] In a preferred embodiment, the groove is formed by removing the insulating layer at the upper edge of the substrate layer, or by pre-reserving a position for processing the groove on the substrate layer, where no insulating layer is provided.

[0008] In a preferred embodiment, the width of the groove is less than or equal to the width of the non-functional area.

[0009] In a preferred embodiment, the groove is provided with a plurality of support portions for supporting the four periphery of the upper line of the directional sound-emitting screen, and the plurality of support portions are distributed at intervals along the periphery of the groove.

[0010] In a preferred embodiment, each of the support portions includes two opposing first support protrusions and second support protrusions, the first support protrusions and the second support protrusions respectively protruding inward from the outer inner wall of the groove and protruding outward from the inner inner wall of the groove.

[0011] In a preferred embodiment, the height of the first support protrusion and the second support protrusion is less than or equal to the depth of the groove, and there is a gap between the first support protrusion and the second support protrusion.

[0012] In a preferred embodiment, the outer wall of the groove is further provided with a plurality of overflow holes, which are spaced apart around the perimeter of the groove.

[0013] In a preferred embodiment, the substrate layer is glass with a conductive layer on its surface.

[0014] On the other hand, this utility model proposes a directional sound-emitting screen, including the lower line of the aforementioned directional sound-emitting screen and the upper line of the directional sound-emitting screen, wherein the upper line and the lower line are fitted together.

[0015] In a preferred embodiment, the upper line of the directional sound-emitting screen includes a vibrating diaphragm and an insulating layer, the insulating layer being formed entirely on the bottom surface of the vibrating diaphragm near the lower line.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This utility model provides a groove on the lower line of the directional sound-emitting screen, which allows foreign object protrusions on the upper line to be accommodated in the groove. This avoids the phenomenon of bulging on the finished product after the upper and lower lines are attached, which would lead to defects in the finished product, thereby greatly improving the yield of the finished product.

[0018] 2. This utility model provides a support structure in the groove of the lower line to prevent the edge of the upper line from collapsing into the groove after the upper line is attached, thus ensuring the flatness of the finished product surface.

[0019] 3. This utility model provides an overflow hole at the edge of the lower line for the adhesive to overflow, so that the adhesive overflows laterally without bulging longitudinally. This ensures that the upper and lower lines are firmly bonded together, while also ensuring the flatness of the finished product surface. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural diagram of the lower part of the directional sound-emitting screen of this utility model;

[0021] Figure 2 This is a top view of the lower part of the directional sound-emitting screen of this utility model;

[0022] Figure 3 This is a cross-sectional view of the directional sound-emitting screen of this utility model.

[0023] The attached figures are labeled as follows:

[0024] 1. Lower line, 11. Substrate layer, 12. First insulating layer, 13. Groove, 14. Glue overflow hole, 2. Upper line, 3. Functional area, 4. Non-functional area, 5. Support part, 51. First support protrusion, 52. Second support protrusion, 53. Gap. Detailed Implementation

[0025] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0026] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprising" shall be understood to include the stated elements or components without excluding other elements or other components.

[0027] like Figure 1 and Figure 2 As shown, the lower wire 1 of the directional sound-emitting screen disclosed in this utility model is attached to the frame of the upper wire 2 of the directional sound-emitting screen. When working, an AC driving voltage is applied between the upper wire 2 and the lower wire 1, and the upper wire 2 vibrates and produces sound under the action of the AC driving voltage.

[0028] The lower line 1 is divided into an inner functional area 3 and a non-functional area 4 located outside the functional area 3. In this embodiment, the lower line 1 of the directional sound-emitting screen specifically includes a substrate layer 11 and a first insulating layer 12, with the first insulating layer 12 covering the substrate layer 11. The substrate layer 11 is glass with an ITO conductive layer deposited on its surface. Preferably, grooves 13 are provided around the four periphery of the non-functional area 4 of the first insulating layer 12 to accommodate the protrusions (not shown) formed on the upper line 2 of the directional sound-emitting screen. This avoids the phenomenon of bulges on the finished product after the upper line 2 and the lower line 1 are bonded together, which would lead to product defects, thereby significantly improving the yield of the finished product.

[0029] In practice, the groove 13 is formed by removing the first insulating layer 12 at the upper edge of the substrate layer 11. That is, the first insulating layer 12 is first applied to the entire surface of the substrate layer 11, and then the first insulating layer 12 at the edge is removed (e.g., etched away); or the position for processing the groove 13 is pre-reserved on the substrate layer 11, and the first insulating layer 12 is not provided at this position. The width of the groove 13 is less than or equal to the width of the non-functional area 4, that is, it does not exceed the non-functional area 4, and its depth is less than or equal to the thickness of the first insulating layer 12.

[0030] Furthermore, because grooves 13 are provided on all four periphery of the first insulating layer 12, after the upper wire 2 and the lower wire 1 are attached, the portion of the upper wire 2 corresponding to the groove 13 is prone to collapsing into the groove 13, which may affect the flatness of the finished product surface. Therefore, to avoid this phenomenon, this utility model preferably provides a plurality of support portions 5 for supporting the four periphery of the upper wire 2 of the directional sound-emitting screen in the groove 13. The plurality of support portions 5 are distributed at intervals along the periphery of the groove 13, preferably evenly distributed at intervals along the periphery of the groove 13.

[0031] In this embodiment, each support portion 5 includes two opposing first support protrusions 51 and second support protrusions 52. The first support protrusions 51 and second support protrusions 52 protrude inward from the outer inner wall surface of the groove 13 and outward from the inner inner wall surface of the groove 13, respectively. The height of the first support protrusions 51 and second support protrusions 52 is less than or equal to the depth of the groove 13, and a gap 53 exists between the first support protrusions 51 and second support protrusions 52 to allow the adhesive to pass through. Of course, each support portion 5 is not limited to the structure defined herein; other support structures that can support the upper line 2 without obstructing the flow of adhesive are also applicable to this invention.

[0032] In addition, to prevent the adhesive from overflowing into the groove 13 when it is filled, the present invention also provides a plurality of overflow holes 14 on the outer wall of the groove 13. These plurality of overflow holes 14 are distributed at intervals around the groove 13, so that excess adhesive can overflow from the overflow holes 14, so that the adhesive overflows in the horizontal direction and does not bulge in the vertical direction. This ensures that the upper line 2 and the lower line 1 are firmly attached, while also ensuring the flatness of the surface of the finished product.

[0033] like Figure 3 As shown, this utility model also discloses a directional sound-emitting screen, including a lower line 1 and an upper line 2 of the aforementioned directional sound-emitting screen, with the upper line 2 and the lower line 1 frame-fitted together. In practice, the upper line 2 may specifically include a vibrating film (not shown) and a second insulating layer (not shown). The vibrating film may be a PET (polyethylene terephthalate) film, wherein the second insulating layer is formed entirely on the bottom surface of the vibrating film near the lower line 1.

[0034] The advantages of this invention are as follows: 1. By providing a groove 13 on the lower wire 1 of the directional sound-emitting screen, foreign object protrusions on the upper wire 2 can be accommodated within the groove 13, thus avoiding bulges on the finished product after the upper wire 2 and lower wire 1 are bonded together, which would lead to defects and significantly improve the yield rate. 2. By providing a support structure within the groove 13 on the lower wire 1, this invention prevents the edge of the upper wire 2 from collapsing into the groove 13 after bonding, ensuring the flatness of the finished product surface. 3. By providing an overflow hole 14 at the edge of the lower wire 1 for edge adhesive overflow, this invention allows the adhesive to overflow laterally without bulging longitudinally, ensuring both a stable bond between the upper wire 2 and lower wire 1 and the flatness of the finished product surface.

[0035] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A downline for a directional sound screen, characterized in that The lower line is attached to the upper line of the directional sound-emitting screen. The lower line is divided into an inner functional area and a non-functional area located outside the functional area. The lower line includes a substrate layer and an insulating layer. The insulating layer is disposed on the substrate layer, and the insulating layer is provided with grooves on the four periphery of the non-functional area for the protrusions formed on the upper line of the directional sound-emitting screen to be accommodated.

2. A downline for a directional sound screen as defined in claim 1, wherein, The groove is formed by removing the insulating layer at the upper edge of the substrate layer, or by pre-reserving a position for processing the groove on the substrate layer, without setting an insulating layer at the position.

3. A down cord for a directional sound emitting screen as defined in claim 1, wherein, The width of the groove is less than or equal to the width of the non-functional area.

4. A down cord for a directional sound screen according to any one of claims 1 to 3, wherein, The groove is provided with multiple support parts for supporting the four perimeter of the upper line of the directional sound-emitting screen, and the multiple support parts are distributed at intervals along the perimeter of the groove.

5. A downline for a directional sound screen as defined in claim 4, wherein, Each of the support portions includes two opposing first support protrusions and second support protrusions, the first support protrusions and the second support protrusions respectively protruding inward from the outer inner wall of the groove and protruding outward from the inner inner wall of the groove.

6. A downline for a directional sound screen as defined in claim 5, wherein, The height of the first support protrusion and the second support protrusion is less than or equal to the depth of the groove, and there is a gap between the first support protrusion and the second support protrusion.

7. A down cord for a directional sound emitting screen as defined in claim 4, wherein, The outer wall of the groove is also provided with a plurality of overflow holes, which are distributed at intervals around the perimeter of the groove.

8. A down cord for a directional sound emitting screen as defined in claim 1, wherein, The substrate layer is glass with a conductive layer on its surface.

9. A directional sound emitting screen, characterized in that It includes the lower line and the upper line of the directional sound-emitting screen as described in any one of claims 1 to 8, wherein the upper line and the lower line are fitted together.

10. A directional sound emitting screen as claimed in claim 9, characterized in that The upper line of the directional sound-emitting screen includes a vibrating diaphragm and an insulating layer, with the insulating layer formed on the bottom surface of the vibrating diaphragm near the lower line.

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