CN214315610U

CN214315610U - Sound production base plate

Info

Publication number: CN214315610U
Application number: CN202023222733.XU
Authority: CN
Inventors: 李志翔; 赵海龙; 岳定飞; 张兵; 王红; 张海鹏; 雷廷
Original assignee: Sichuan Changhong Electric Co Ltd
Current assignee: Sichuan Changhong Electric Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-09-28
Anticipated expiration: 2030-12-28

Abstract

The utility model discloses a sound production base plate, including honeycomb sandwich layer, adhesion layer and skin layer, the both sides of honeycomb sandwich layer all have the skin layer through adhesion layer bonding, and the skin layer is used for bonding mutually with the optical display diaphragm. The non-woven fabric bonding layer is arranged between the honeycomb core layer and the skin layer, so that the bonding strength inside the substrate is greatly enhanced, the stability is high under long-term high-frequency vibration, and no layering is generated; and the surface energy of the skin layer is greatly improved by performing gum dipping treatment on the skin layer material with low surface energy, so that the bonding and covering of the substrate and the optical display film have higher strength, a stable screen display main body is formed, and the sound production effect is improved.

Description

Sound production base plate

Technical Field

The utility model relates to a from the technical field of the sound screen, especially a sounding substrate.

Background

Usually, the flat panel display screen is used only as a picture display medium, and the sound is usually provided by an additional speaker provided with a random device or by an external sound box. The existing method for realizing audio reproduction by using a machine built-in loudspeaker is often limited by installation space, and the loudspeaker is generally small in size and cannot obtain good audio reproduction effect. The external loudspeaker sound box occupies a certain space, and is inconvenient to use. The size of the current flat panel display is bigger and bigger, especially the 100' level super large flat panel television, no matter the built-in speaker or the external sound system, has a longer distance from the display picture, has obvious sound and display picture separation and asynchronous problem, has caused great influence to the visual and audio experience. In order to solve the problem of separating sound and picture of a large-size flat-panel television, a screen sounding technology is developed on the basis of a DML (distributed Mode Loudmaker) technology in recent years, and an exciter is used for pushing a screen to vibrate and then pushing air to generate sound, so that the effect of integrating sound and picture is achieved.

Because the liquid crystal display panel is composed of front and rear double-layer glass, the liquid crystal display panel has large thickness and strong rigidity, and is difficult to obtain better sound effect when a screen sounding technology is applied. The laser display adopts a projection display mode that the whole machine is separated from the screen, and the laser display screen is usually made of an ambient light resistant optical film such as a Fresnel film, a black grid film, a micro-lens array film and other composite hard rigid substrates and a structural frame, so that although the screen sounding technology is easy to apply, in order to keep the strength and the display smoothness, the existing composite substrates are usually made of a honeycomb aluminum plate, an aluminum-plastic composite plate or an iron-plastic composite plate for building materials, so that the defects of large weight and density and unsatisfactory vibration effect under an exciter exist.

SUMMERY OF THE UTILITY MODEL

For solving the problem that exists among the prior art, the utility model aims at providing a sound production base plate sets up between honeycomb sandwich layer and skin layer and glues solid layer, makes the lower and assurance its vibration effect of whole weight of sound production base plate.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a sounding substrate, includes honeycomb sandwich layer, bonding layer and skin layer, the both sides of honeycomb sandwich layer all have the skin layer through bonding layer bonding, and the skin layer is used for gluing with the optical display diaphragm mutually.

Furthermore, the honeycomb core layer is composed of a plurality of honeycomb holes, and the side length or the diameter of each honeycomb hole is less than or equal to 5 mm.

Further, the honeycomb holes are regular hexagons, rectangles, circles or equilateral triangles.

Further, the honeycomb core layer is made of one of an aluminum material, a paper material, a glass fiber material, a carbon fiber material or an organic resin material.

Further, the adhesive layer is a hollow semitransparent film.

Furthermore, the adhesive layer is made of filamentous fiber materials.

Furthermore, the bonding layer is silk semi-transparent non-woven fabric and is bonded with the honeycomb core layer and the skin layer on two sides through the soaking of adhesive.

Further, the skin layer adopts kraft paper, glass fiber, carbon fiber or organic resin.

Further, the skin layer is impregnated with a non-adhesive resin material or a high molecular polymer material.

Furthermore, the total thickness of the sounding substrate is less than or equal to 15mm, and the density is 0.5g/cm³The following.

The utility model has the advantages that:

the utility model discloses a sounding substrate improves sounding substrate's sound production effect through adopting honeycomb and light material. And through set up the non-woven fabrics adhesion layer between honeycomb sandwich layer and skin layer, carry out the surface energy that the gum dipping was handled and increased the skin layer to skin layer material, guarantee the weight and the density of sound production base plate and increased sound production base plate's bulk strength, vibration stability, surface smoothness and surface paste performance simultaneously.

Drawings

Fig. 1 is a cross-sectional view of a sound substrate according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of honeycomb holes of the embodiment of the present invention being regular hexagons;

fig. 3 is a schematic view of honeycomb holes of an embodiment of the present invention in an equilateral triangle;

fig. 4 is a schematic view illustrating honeycomb holes of the embodiment of the present invention are circular.

Reference numerals: 1-a honeycomb core layer; 2-a bonding layer; 3-a skin layer.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to fig. 1-4.

Examples

As shown in fig. 1, a sound production substrate is mainly used in a laser display optical screen, and the sound production substrate is a multi-layer flat plate structure with a honeycomb interlayer and comprises a honeycomb core layer, a bonding layer and a skin layer, wherein the skin layer is bonded on the front side and the back side of the honeycomb core layer through the bonding layer, and the skin layer is connected with an optical display membrane through the skin layer arranged on the front side of the honeycomb core layer. The sounding substrate, the optical display diaphragm, the exciter and other necessary structural components form a self-sounding laser display screen, and received electroacoustic signals are converted into mechanical vibration through the exciter and drive the optical display diaphragm and the sounding substrate to vibrate together, so that the vibrating air can perform self-sounding.

Specifically, the honeycomb core layer is used as a middle layer of the sounding substrate and is composed of a plurality of honeycomb holes, and the side length or the diameter of each honeycomb hole of the honeycomb core layer is less than or equal to 5 mm. As shown in fig. 2 to 4, the honeycomb holes may have regular shapes such as regular hexagons, rectangles, circles, or equilateral triangles, or may have irregular shapes. The honeycomb core layer may be made of a metal material such as aluminum, iron, copper, or steel, or may be made of a non-metal material such as kraft paper, glass fiber, carbon fiber, or organic resin, and preferably, the honeycomb core layer is made of one of an aluminum material, a paper material, a glass fiber material, a carbon fiber material, or an organic resin material. The material and thickness of the honeycomb core layer, the size of the honeycomb holes and the opening rate of the honeycomb core layer need to be reasonably matched with the parameters such as the thickness and the material of the skin layer, and on the basis of keeping the integral strength and the flatness of the sounding substrate, the weight and the density are smaller and are better choices. Preferably, the honeycomb core layer is made of aluminum, the thickness of the honeycomb core layer is 8-12 mm, the honeycomb holes are regular hexagons, and the side length of each honeycomb hole is 2-3 mm.

The bonding layer is the fretwork semi-transparent film that comprises the irregular evenly distributed of filiform fiber material, and as the preferred, the bonding layer adopts the semi-transparent non-woven fabrics of silk matter, through soaking the honeycomb sandwich layer and the firm bonding of skin layer of adhesive and both sides, strengthens the intensity and the structural stability of whole sound production base plate through the bonding layer under the circumstances that increases a minute amount of weight for the sound production base plate can not appear the structure layering under long-term high frequency vibration's the circumstances.

The thickness of the skin layer is less than or equal to 1mm, in order to reduce the whole weight, the skin layer is made of non-metal materials such as kraft paper, glass fiber, carbon fiber or organic resin, and preferably, the skin layer is made of glass fiber, and the thickness is 0.1-0.3 mm. In order to improve the bonding performance of the skin layer and the optical display membrane, the skin layer can be subjected to gum dipping treatment by using gum dipping materials such as cured non-viscous resin materials or high molecular polymer materials and the like, so that the surface energy of the skin layer is improved, and the outer surface of the sounding substrate is smoother.

The total thickness of the sounding substrate of the embodiment is less than or equal to 15mm, and the density is 0.5g/cm³Below, have light in weight, easily vibrate and the good characteristic of vibration tone quality, glue the solid layer through set up the non-woven fabrics between honeycomb sandwich layer and skin layer and make the bonding strength greatly increased in the sound production base plate, can not produce the layering under long-term high-frequency vibration, have higher stability. And the surface energy of the skin layer is greatly improved by performing gum dipping treatment on the skin material with low surface energy, so that the bonding and covering of the substrate and the optical display membrane have higher strength, the smoothness and the structural stability of the large-size spontaneous acoustic laser display screen are ensured, and the large-size spontaneous acoustic laser display screen has high strength and high structural stabilityThe spontaneous acoustic laser display screen has the effects of sound and picture integration, 360-degree full sound field, no valley point of sound, attenuation of propagation, small sound distortion and the like, and the ultra-light spontaneous acoustic laser display screen is convenient to transport, store and install, and saves the transport and installation cost.

Claims

1. The sounding substrate is characterized by comprising a honeycomb core layer, a bonding layer and a skin layer, wherein the skin layer is bonded on two sides of the honeycomb core layer through the bonding layer, and the skin layer is used for being bonded with an optical display membrane.

2. The sounding substrate according to claim 1, wherein the honeycomb core layer is composed of a plurality of honeycomb holes, and the length of the side or the diameter of each honeycomb hole is less than or equal to 5 mm.

3. The sound-emitting substrate according to claim 2, wherein the honeycomb holes are regular hexagons, rectangles, circles or equilateral triangles.

4. The sound production substrate of claim 1, wherein the honeycomb core layer is made of one of aluminum, paper, glass fiber, carbon fiber or organic resin.

5. The sound production substrate as claimed in claim 1, wherein the adhesive layer is a hollow translucent film.

6. The sound generating substrate as claimed in claim 5, wherein the adhesive layer is made of filament fiber material.

7. The sounding substrate according to claim 5, wherein said bonding layer is made of silk semi-transparent non-woven fabric and is bonded to the honeycomb core layer and the skin layer on both sides by adhesive.

8. The sound generating substrate as claimed in claim 1, wherein the skin layer is made of kraft paper, glass fiber, carbon fiber or organic resin.

9. The sound generating substrate as claimed in claim 1, wherein the skin layer is impregnated with a non-adhesive resin material or a high molecular polymer material.

10. The sound producing substrate as claimed in any one of claims 1 to 9, wherein the sound producing substrate has a total thickness of 15mm or less and a density of 0.5g/cm³The following.