Liquid crystal display dustproof structure with high sealing performance

Abstract

The utility model relates to the technical field of screen protection, in particular to a liquid crystal screen dustproof structure with high sealing performance, which comprises a perspective screen and a product main body, and the product main body comprises an elastic porous material and a liquid crystal screen; a display opening is formed in the front face of the product body, the liquid crystal screen is fixed in the product body, the front face of the elastic porous material adheres to the inner side of the product body along the edge of the display opening, the rear face of the elastic porous material adheres to the front face of the liquid crystal screen, and the elastic porous material is clamped by the inner side of the product body and the front face of the liquid crystal screen to deform. The liquid crystal screen displays through the display port; the back of the perspective screen is fixed to the front of the product body, and the perspective screen covers the display opening. The problems that a sealed space formed by blocking a perspective screen and a liquid crystal screen through a sponge layer is poor in sealing performance and not ideal in dustproof effect are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of screen protection, in particular to a dust-proof structure for a liquid crystal screen with high tightness. Background Art

[0002] Most current liquid crystal screens (or liquid crystal display screens), such as the display screens of wire controllers used for air conditioner control, television screens, computer screens, etc., have a common drawback, that is, they are prone to electrostatically adsorb dust; because in order to ensure the normal operation of the screen and sufficient display brightness, there is usually a relatively high electrostatic voltage on the back of the liquid crystal screen, generally positive, and this electrostatic voltage has an adsorption effect on surrounding particles, such as water molecules, dust, impurities, etc. in the air. These particles themselves carry positive ions and negative ions, and due to the balance of positive and negative electricities, the particles are neutral and do not show electric properties externally. However, when these particles approach the electrostatic voltage, the positive ions in the particles are repelled, and since there are still negative ions in the particles, the whole particle exhibits negative electrical properties and is thus adsorbed by the electrostatic voltage; therefore, due to the electrostatic effect generated by the back screen voltage of the liquid crystal screen, it is easy to adsorb surrounding dust and other fine particles, so when the product is being produced or after being used for a long time, external dust will be adsorbed onto the surface of the liquid crystal display screen through the gaps between various parts, and after a large amount accumulates, problems such as poor display effect and many screen stains will occur.

[0003] Therefore, a common dust-proof method for liquid crystal screens is to fill a sponge layer in the gap between the liquid crystal screen and the perspective screen (such as a glass screen, a transparent film, etc.) on the surface of the product, so as to use the sponge layer to block water molecules, dust, impurities, etc. adsorbed by static electricity from entering the gap between the liquid crystal screen and the perspective screen, achieving a dust-proof effect.

[0004] However, since the sponge layer is usually adhered between the liquid crystal screen and the perspective screen by pasting, when the product, such as a wire controller, due to long-term use and movement, problems such as structural loosening and displacement will occur, resulting in an enlarged gap between the liquid crystal screen and the perspective screen. In addition, the adhesive of the sponge layer will have weakened adhesion over time, and finally, a gap will reappear among the liquid crystal screen, the sponge layer, and the perspective screen, losing the dust-proof function. Summary of the Utility Model

[0005] Aiming at the above defects, the purpose of the present utility model is to propose a dust-proof structure for a liquid crystal screen with high tightness, which solves the problem that the sealing space formed by blocking between the perspective screen and the liquid crystal screen with a sponge layer has poor tightness and unsatisfactory dust-proof effect.

[0006] To achieve this purpose, the present utility model adopts the following technical solutions:

[0007] A dust-proof structure for a liquid crystal screen with high sealing performance, comprising a perspective screen and a product main body. The product main body includes an elastic porous material and a liquid crystal screen. A display opening is provided on the front surface of the product main body. The liquid crystal screen is fixed inside the product main body. The front surface of the elastic porous material is adhesively bonded to the inner side of the product main body along the edge of the display opening, and the rear surface of the elastic porous material is adhesively bonded to the front surface of the liquid crystal screen. The elastic porous material is deformed by being clamped between the inner side of the product main body and the front surface of the liquid crystal screen, and the liquid crystal screen is displayed through the display opening.

[0008] The rear surface of the perspective screen is fixed to the front surface of the product main body, and the perspective screen covers the display opening.

[0009] Furthermore, the product main body further includes a front shell, an electronic control board, and a rear shell cover. The display opening is provided on the front surface of the front shell. Inside the groove of the front shell, a limiting groove is provided along the circumference of the display opening.

[0010] The front surface of the elastic porous material is adhesively bonded to the bottom of the limiting groove. The liquid crystal screen is limited within the limiting groove. The electronic control board is fixed inside the front shell, and the electronic control board presses the rear surface of the liquid crystal screen to be at the same horizontal plane as the top of the limiting groove. The rear shell cover is buckled into the rear groove opening of the front shell.

[0011] Furthermore, an electronic control board limiting block is provided on the inner groove wall on the upper side of the front shell. The distance between the electronic control board limiting block and the top of the limiting groove is equal to the thickness of the electronic control board.

[0012] At least one first electronic control board fixing position is provided at the lower left of the limiting groove, and at least one second electronic control board fixing position is provided at the lower right of the limiting groove.

[0013] The top of the electronic control board is limited between the electronic control board limiting block and the top of the limiting groove, and the lower part of the electronic control board is fixed to the first electronic control board fixing position and the second electronic control board fixing position.

[0014] Furthermore, the elastic porous material is a foam double-sided adhesive.

[0015] Furthermore, a plurality of notches are evenly distributed on the groove wall of the limiting groove.

[0016] Furthermore, at least two hooks are provided on the inner groove wall of the front shell, and at least two of the hooks are symmetrically arranged.

[0017] A buckle is provided on the side of the rear shell cover corresponding to the hook and extends forward. The buckle and the hook are snap-connected.

[0018] Furthermore, the rear surface of the perspective screen is adhesively bonded to the front surface of the product main body.

[0019] The technical solution provided by the present utility model may include the following beneficial effects: Based on the liquid crystal screen being fixed inside the product main body, an elastic porous material is bonded between the inner side of the product main body and the front of the liquid crystal screen, and the elastic porous material is clamped and deformed by the display opening and the liquid crystal screen. Thus, by utilizing the fixed relationship between the liquid crystal screen and the product main body, the gap between the liquid crystal screen and the display opening is relatively fixed and is blocked by the elastic porous material, preventing water molecules, dust, impurities, etc. from entering, and being conducive to heat dissipation. Also, because the elastic porous material is clamped and deformed, when there is a certain floating (such as structural loosening, displacement, etc.) in the gap between the liquid crystal screen and the display opening, it can elastically recover to block, ensuring the dust-proof effect. Finally, the back of the perspective screen is fixed to the front of the product main body, so that the perspective screen covers the display opening, and thus the liquid crystal screen can be displayed through the display opening and the perspective screen. Based on the fixed relationship between the perspective screen and the product main body, and the perspective screen being separated by the product main body and not directly contacting the elastic porous material, the elastic recovery of the elastic porous material will not affect the perspective screen, avoiding the perspective screen being squeezed to form a gap. Furthermore, a relatively fixed sealed space (with good sealing performance) is formed from the back of the perspective screen to the front of the liquid crystal screen for dust prevention, and it is difficult for water molecules, dust, impurities, etc. to enter, greatly improving the dust-proof effect of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is an assembly schematic diagram of a high-sealing liquid crystal screen dust-proof structure of one embodiment of the present utility model.

[0021] Figure 2 is as Figure 1 shown in the structural schematic diagram of the liquid crystal screen and the elastic porous material.

[0022] Figure 3 is as Figure 1 shown in the sectional view of a high-sealing liquid crystal screen dust-proof structure.

[0023] Figure 4 is as Figure 3 shown in the enlarged view of part A of a high-sealing liquid crystal screen dust-proof structure.

[0024] Figure 5 is as Figure 1 shown in the structural schematic diagram of the front housing.

[0025] Wherein: perspective screen 1, product main body 2, elastic porous material 3, liquid crystal screen 4, display opening 5, front housing 6, electronic control board 7, rear housing cover 8, limit groove 61, electronic control board limit block 62, first electronic control board fixing position 63, second electronic control board fixing position 64, notch 611, hook 65, buckle 81. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features, which are used to distinguish and describe features, without order or importance.

[0028] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0029] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific situations.

[0030] The following combines Figures 1 to 5 , and describes a high-sealing dust-proof structure for a liquid crystal screen in an embodiment of the present utility model.

[0031] A high-sealing dust-proof structure for a liquid crystal screen includes a perspective screen 1 and a product main body 2. The product main body 2 includes an elastic porous material 3 and a liquid crystal screen 4. A display opening 5 is provided in the front of the product main body 2. The liquid crystal screen 4 is fixed inside the product main body 2. The front of the elastic porous material 3 is adhered to the inner side of the product main body 2 along the edge of the display opening 5. The rear of the elastic porous material 3 is adhered to the front of the liquid crystal screen 4. The elastic porous material 3 is deformed by being clamped between the inner side of the product main body 2 and the front of the liquid crystal screen 4, and the liquid crystal screen 4 is displayed through the display opening 5;

[0032] The rear of the perspective screen 1 is fixed to the front of the product main body 2, and the perspective screen 1 covers the display opening 5.

[0033] In a preferred embodiment of a dust-proof structure for a liquid crystal screen with high sealing performance proposed by the present utility model, as Figures 1 to 5 shown, based on the fact that the liquid crystal screen 4 is fixed inside the product main body 2, an elastic porous material 3 is bonded between the inner side of the product main body 2 and the front of the liquid crystal screen 4, and the elastic porous material 3 is deformed by being clamped between the display port 5 and the liquid crystal screen 4. Thus, by using the fixing relationship between the liquid crystal screen 4 and the product main body 2, the gap between the liquid crystal screen 4 and the display port 5 is relatively fixed and is blocked by the elastic porous material 3, preventing water molecules, dust, impurities, etc. from entering, and being beneficial to heat dissipation. Also, because the elastic porous material 3 is deformed by being clamped, when there is a certain floating (such as structural loosening, displacement, etc.) in the gap between the liquid crystal screen 4 and the display port 5, it can elastically recover to block, ensuring the dust-proof effect. Finally, the back of the perspective screen 1 is fixed to the front of the product main body 2, so that the perspective screen 1 covers the display port 5, and thus the liquid crystal screen 4 can display through the display port 5 and the perspective screen 1. Based on the fixing relationship between the perspective screen 1 and the product main body 2, and the perspective screen 1 is separated by the product main body 2 and does not directly contact the elastic porous material 3, thus the elastic recovery of the elastic porous material 3 will not affect the perspective screen 1, avoiding the perspective screen 1 being squeezed to form a gap, and further forming a relatively fixed sealed space (with good sealing performance) from the back of the perspective screen 1 to the front of the liquid crystal screen 4 for dust-proofing, and it is difficult for water molecules, dust, impurities, etc. to enter, greatly improving the dust-proof effect of the product.

[0034] Furthermore, the product main body 2 further includes a front shell 6, an electronic control board 7, and a rear cover 8; a display port 5 is opened on the front of the front shell 6, and a limiting groove 61 is provided along the circumferential side of the display port 5 in the groove of the front shell 6;

[0035] The front of the elastic porous material 3 is bonded to the bottom of the limiting groove 61, the liquid crystal screen 4 is limited in the limiting groove 61, the electronic control board 7 is fixed inside the front shell 2, the electronic control board 7 presses the back of the liquid crystal screen 4 to be at the same horizontal plane as the top of the limiting groove 61, and the rear cover 8 is buckled into the rear notch of the front shell 6.

[0036] In this embodiment, in order to arrange the elastic porous material 3 and the liquid crystal screen 4 inside the product main body 2, the product main body 2 further includes a front shell 6, an electronic control board 7 and a rear shell cover 8; a display opening 5 is formed in the front of the front shell 6, and a limiting groove 61 is arranged along the circumference of the display opening 5 in the groove of the front shell 6 for placing the elastic porous material 3 and the liquid crystal screen 4. Then, the front surface of the elastic porous material 3 is bonded to the bottom of the limiting groove 61, and the rear surface of the elastic porous material 3 is bonded to the front surface of the liquid crystal screen 4. Then, the electronic control board 7 fixed inside the front shell 2 is used to press the rear surface of the liquid crystal screen 4 to be flush with the top end of the limiting groove 61, so that the elastic porous material 3 is clamped and deformed, and the liquid crystal screen 4 is limited in the limiting groove 61. The limiting groove 61 and the electronic control board 7 enclose a fixing space to fix the liquid crystal screen 4, and at the same time, the fixing space is used to further prevent impurities from invading the liquid crystal screen 4; finally, the rear shell cover 8 is buckled into the rear notch of the front shell 6, making it more difficult for dust to enter the product main body 2.

[0037] Furthermore, an electronic control board limiting block 62 is arranged on the inner groove wall of the upper side of the front shell 6, and the distance between the electronic control board limiting block 62 and the top end of the limiting groove 61 is equal to the board thickness of the electronic control board 7;

[0038] At least one first electronic control board fixing position 63 is arranged at the lower left of the limiting groove 61, and at least one second electronic control board fixing position 64 is arranged at the lower right of the limiting groove 61;

[0039] The top end of the electronic control board 7 is limited between the electronic control board limiting block 62 and the top end of the limiting groove 61, and the lower part of the electronic control board 7 is fixed to the first electronic control board fixing position 63 and the second electronic control board fixing position 64.

[0040] In this embodiment, since it is necessary to press down the electronic control board 7 multiple times to reach the position when pressing the liquid crystal screen 4, in order to facilitate the downward pressing and calibration of the electronic control board 7, an electronic control board limiting block 62 is arranged on the inner groove wall of the upper side of the front shell 6, and the distance between the electronic control board limiting block 62 and the top end of the limiting groove 61 is equal to the board thickness of the electronic control board 7. First, the top end of the electronic control board 7 is limited between the electronic control board limiting block 62 and the top end of the limiting groove 61, and then press down multiple times. After the pressing position is accurate, the lower part of the electronic control board 7 is fixed to the first electronic control board fixing position 63 located at the lower left of the limiting groove 61 and the second electronic control board fixing position 64 located at the lower right of the limiting groove 61, so as to press the liquid crystal screen 4 with the upper part of the electronic control board 7.

[0041] It should be noted that there are various fixing relationships between the lower part of the electronic control board 7 and the first electronic control board fixing position 63 (or the second electronic control board fixing position 64). For example: through holes are formed in the electronic control board 7, and threaded holes are correspondingly formed in the first electronic control board fixing position 63 (or the second electronic control board fixing position 64), and they are fixed by screwing with screws in series; or convex blocks are arranged on the electronic control board 7, and corresponding grooves are arranged in the first electronic control board fixing position 63 (or the second electronic control board fixing position 64), and they are fixed by the combination of convex and concave.

[0042] Furthermore, the elastic porous material 3 is a foam double-sided adhesive tape.

[0043] In this embodiment, the elastic porous material 3 is preferably a foam double-sided adhesive tape, such as IXPE foam double-sided adhesive tape, which has strong viscosity, is not easy to fall off, and is elastic.

[0044] Furthermore, a plurality of notches 611 are evenly distributed on the groove wall of the limiting groove 61 .

[0045] In this embodiment, since the LCD screen 4 is fixed in a relatively closed space, heat cannot be dissipated. Therefore, a plurality of notches 611 are evenly distributed on the wall of the limiting groove 61 , and the heat generated by the LCD screen 4 can be dissipated through the notches 611 .

[0046] Furthermore, the inner groove wall of the front housing 6 is provided with at least two hooks 65, wherein at least two hooks 65 are symmetrically arranged;

[0047] A buckle 81 is provided on the side of the rear shell cover 8 corresponding to the hook 65 and facing forward, and the buckle 81 is buckled and connected to the hook 65 .

[0048] In this embodiment, because the rear shell cover 8 is to be snapped into the rear notch of the front shell body 6, making it more difficult for dust to enter the product body 2, at least two hooks 65 are provided on the inner groove wall of the front shell body 6, wherein at least two hooks 65 are symmetrically arranged, and a buckle 81 is provided forwardly on the side of the rear shell cover 8 corresponding to the hook 65. When the buckle 81 and the hook 65 are snap-connected, the rear shell cover 8 will enter the rear notch of the front shell body 6. The side of the rear shell cover 8 and the inner groove wall of the front shell body 6 are tightly abutted, and the gap at the joint is small, so dust is not easy to enter.

[0049] Furthermore, the rear side of the transparent screen 1 is bonded to the front side of the product body 2 .

[0050] In this embodiment, in order to prevent the see-through screen 1 from being fixed to the front of the product body 2 with more joint gaps, which may allow dust to easily enter, the see-through screen 1 is bonded to the front of the product body 2 by means of bonding; more importantly, even if impurities enter the liquid crystal screen, the see-through screen 1 is easy to disassemble and the original sealed space is easy to clean.

[0051] Other structures and operations of a highly sealed dust-proof structure for a liquid crystal screen according to an embodiment of the utility model are known to ordinary technicians in the field and will not be described in detail here.

[0052] In the description of this specification, the descriptions referring to terms such as "embodiment", "example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0053] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A highly sealed liquid crystal screen dustproof structure, characterized in that: The product comprises a see-through screen and a product body, wherein the product body comprises an elastic porous material and a liquid crystal screen; a display port is provided on the front of the product body, the liquid crystal screen is fixed inside the product body, the front of the elastic porous material is bonded to the inner side of the product body along the edge of the display port, the back of the elastic porous material is bonded to the front of the liquid crystal screen, the elastic porous material is clamped and deformed by the inner side of the product body and the front of the liquid crystal screen, and the liquid crystal screen displays through the display port; The rear side of the perspective screen is fixed to the front side of the product body, and the perspective screen covers the display port.

2. The high-sealing dust-proof structure for a liquid crystal display according to claim 1, characterized in that: The product body also includes a front housing, an electric control board and a rear housing cover; the display port is provided on the front of the front housing, and a limiting slot is provided along the periphery of the display port in the slot of the front housing; The front of the elastic porous material is bonded to the bottom of the limiting groove, the LCD screen is limited in the limiting groove, the electric control board is fixed in the front shell, the electric control board presses the back of the LCD screen to the same horizontal plane as the top of the limiting groove, and the rear shell cover is buckled in the rear notch of the front shell.

3. The high-sealing dust-proof structure for a liquid crystal display according to claim 2, characterized in that: An electric control board limit block is provided on the upper inner groove wall of the front housing, and the distance between the electric control board limit block and the top end of the limit groove is equal to the thickness of the electric control board; At least one first electric control board fixing position is provided at the lower left of the limiting groove, and at least one second electric control board fixing position is provided at the lower right of the limiting groove; The top end of the electric control board is limited between the electric control board limiting block and the top end of the limiting groove, and the lower part of the electric control board is fixed to the first electric control board fixing position and the second electric control board fixing position.

4. The high-sealing dust-proof structure for a liquid crystal display according to claim 1, characterized in that: The elastic porous material is foam double-sided adhesive.

5. The high-sealing dust-proof structure for a liquid crystal display according to claim 2, characterized in that: The groove wall of the limiting groove is evenly distributed with a plurality of notches.

6. The high-sealing dust-proof structure for a liquid crystal display according to claim 2, characterized in that: The inner groove wall of the front housing is provided with at least two hooks, wherein at least two of the hooks are symmetrically arranged; A buckle is provided forwardly on the side of the rear shell cover corresponding to the hook, and the buckle is buckled and connected to the hook.

7. The high-sealing dust-proof structure for a liquid crystal display according to claim 1, characterized in that: The rear side of the see-through screen is bonded to the front side of the product body.

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