Light leakage prevention touch screen

Abstract

The utility model discloses a light leakage prevention touch screen which comprises an installation shell, a screen body, a heat dissipation substrate, a light blocking strip and a positioning support, the screen body, the heat dissipation substrate, the light blocking strip and the positioning support are assembled in the installation shell, a display window is formed in the upper portion of the installation shell, and the heat dissipation substrate is fixedly assembled at the bottom of the screen body and installed on the outer side of the display window in a nested mode. The light blocking strip is embedded in a gap among the screen body, the heat dissipation substrate and the installation shell, the lower surface of the heat dissipation substrate is evenly and fixedly connected with heat dissipation fins, positioning notches are evenly formed in the heat dissipation fins, and the positioning support is arranged below the heat dissipation substrate and abuts against the positioning notches. A positioning pin shaft capable of stretching out and drawing back in the positioning support is assembled on one side of the positioning support, the positioning pin shaft is rotationally installed on the inner wall of the installation shell, and the other side of the positioning support is fixed into the installation shell through an inner layer bolt. According to the utility model, the heat generated by the screen body during working can be effectively dissipated, the display effect and the aesthetic property are improved, and the assembly efficiency of the touch screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of touch screens, in particular to a light leakage-proof touch screen. Background Art

[0002] Touch screens are widely used in today's society. Function control and application are achieved by directly operating virtual buttons on the display screen. They are widely used as display screens of smart electronic devices and control panels of smart homes.

[0003] Since the touch screen needs to superimpose the touch screen and the display screen, the overall thickness of the screen is increased. When assembled in the shell, the screen light is easily scattered from the seam, affecting the display effect. Therefore, it is necessary to install a light-blocking strip at the seam between the installation shell and the screen. The problem with the traditional installation of the light-blocking strip is that if the outer surface edge of the screen is not sealed, it is difficult to completely solve the light leakage problem. If the outer surface edge of the screen is sealed, the light-blocking strip will leak out, affecting the overall appearance of the touch screen.

[0004] Moreover, in the traditional touch screen assembly process, the positioning bracket used to fix the screen and other components is assembled in the housing by screwing bolts. The use of bolts for all fixations will increase the amount of operation required to screw the bolts, and the narrow space of the housing is inconvenient for operation, thereby affecting the assembly efficiency. Utility Model Content

[0005] In view of the above-mentioned deficiencies existing in the prior art, the purpose of the utility model is to provide an anti-light leakage touch screen, which can ensure that the heat generated by the screen body during operation is effectively dissipated, improve the display effect and aesthetics, and improve the assembly efficiency of the touch screen.

[0006] The technical solution adopted by the utility model to achieve the above-mentioned purpose is: an anti-light leakage touch screen, including a mounting shell and a screen body, a heat dissipation substrate, a light blocking strip, and a positioning bracket mounted in the mounting shell, a display window is opened on the top of the mounting shell, the heat dissipation substrate is fixedly mounted on the bottom of the screen body, and the heat dissipation substrate and the screen body are nested and installed on the outside of the display window, a nesting groove arranged on the inner side of the mounting shell is opened on the periphery of the display window, the light blocking strip is nested in the gap between the screen body, the heat dissipation substrate and the mounting shell, and the top of the light blocking strip is nested in the nesting groove, the lower surface of the heat dissipation substrate is evenly fixed with heat dissipation fins, and the heat dissipation fins are evenly opened with positioning notches, the positioning bracket is installed under the heat dissipation substrate and keeps abutting against the positioning notch, a sliding block is slidably installed on one side of the positioning bracket, and a positioning pin shaft extending to the outside of the positioning bracket is fixed on the sliding block, the positioning pin shaft is rotatably installed on the inner wall of the mounting shell, and the other side of the positioning bracket is fixed to the inside of the mounting shell by an inner layer bolt.

[0007] In some of the implementations, in order to facilitate efficient and rapid assembly of various components in the installation housing while ensuring the heat dissipation effect of the screen body, the following technical solutions are provided.

[0008] An assembly opening is provided below the installation shell, and a protective cover is nested and installed at the assembly opening. The protective cover is fixed to the installation shell by outer bolts, and heat dissipation holes are provided on the protective cover.

[0009] In some of the implementations, in order to ensure stable assembly of the screen body and realize display and touch control functions, the following technical solutions are provided.

[0010] The screen body includes a protective film, a touch screen, an adhesive layer, and a display screen which are arranged from top to bottom and bonded in sequence. The protective film is arranged on the inner side of the display window and adheres to the inner wall of the display window. The touch screen is arranged on the inner side of the display window and adheres to the bottom of the display window. The bottom of the display screen is fixedly assembled on the upper surface of the heat dissipation substrate.

[0011] In some of the implementations, in order to ensure that the positioning bracket can effectively position the heat dissipation substrate and ensure that the screen body is stably assembled in the installation shell without affecting the heat dissipation effect, the following technical solutions are provided.

[0012] The positioning bracket comprises an outer frame and positioning strips evenly fixed in the outer frame. The sliding block and the positioning pin shaft are assembled on the positioning bracket, and the positioning strips are nested and matched with the positioning notches.

[0013] In some of the implementations, in order to facilitate the assembly of the positioning pin and the sliding block in the outer frame and perform telescopic movement, to ensure that the positioning pin can be stably assembled in the mounting shell, to facilitate the disassembly and assembly of the positioning bracket on the mounting shell, the following technical solution is provided.

[0014] A sliding groove is provided in the outer frame, the sliding block is slidably installed in the sliding groove, and the sliding block is fixedly connected to an operation key arranged on the outside of the outer frame, a guide column is fixedly connected in the sliding groove and is slidably connected to the sliding block, and a support spring is wound on the guide column, and two ends of the support spring are respectively kept in contact with the inner wall of the sliding groove and the sliding block, and the inner wall of the outer frame is provided with a slot that is combined with the positioning pin shaft.

[0015] The beneficial effects of the utility model are as follows: the provision of the heat dissipation substrate can not only ensure that the screen body assembled thereon is stably installed in the mounting shell, but also ensure that the heat generated by the screen body during operation is effectively dissipated, thereby ensuring the stable operation of the screen body; the matching combination of the light-shielding strip and the mounting shell can not only effectively prevent the light emitted by the screen body from dissipating along the display window and improving the display effect, but also can hide the light-shielding strip to the inner side of the mounting shell to ensure the aesthetics of the touch screen; the two sides of the positioning bracket are respectively assembled in the mounting shell and fixed to the heat dissipation substrate and the screen body by means of hinges and bolts, thereby reducing the number of bolt assembly, facilitating the fixing of the positioning bracket in the narrow space of the mounting shell, and improving the assembly efficiency of the touch screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural schematic diagram of another perspective of the utility model;

[0018] Figure 3 It is a cutaway schematic diagram of the utility model;

[0019] Figure 4 A cutaway diagram of the installation housing;

[0020] Figure 5 It is a schematic diagram of the structure of the protective cover;

[0021] Figure 6 This is a schematic diagram of the structure after the screen body and the light shielding strip are separated;

[0022] Figure 7 is a schematic diagram of the structure of a heat dissipation substrate;

[0023] Figure 8 is a structural schematic diagram of a positioning bracket;

[0024] Fig. 9 It is a schematic diagram of the structure of the sliding block installed in the positioning bracket.

[0025] In the figure: 1 installation shell, 101 display window, 102 nesting groove, 103 upper pad, 104 lower pad, 105 assembly port, 106 protective cover, 107 outer bolt, 108 data interface, 109 operation button, 110 power interface, 111 slot, 112 heat dissipation hole, 2 screen body, 21 protective film, 22 touch screen, 23 adhesive layer, 24 display screen, 25 flexible circuit board, 3 heat dissipation substrate, 31 heat dissipation flap, 32 positioning notch, 4 light blocking strip, 5 positioning bracket, 51 sliding block, 511 operation button, 52 positioning pin, 53 inner bolt, 54 outer frame, 541 slide groove, 542 guide column, 543 support spring, 55 positioning strip. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-9 A light leakage proof touch screen comprises a mounting shell 1 and a screen body 2, a heat dissipation substrate 3, a light blocking strip 4 and a positioning bracket 5 mounted in the mounting shell 1. A display window 101 is provided on the top of the mounting shell 1. The heat dissipation substrate 3 is fixedly mounted on the bottom of the screen body 2. The heat dissipation substrate 3 and the screen body 2 are nested and installed outside the display window 101. A nesting groove 102 arranged outside the display window 101 is provided on the inner side of the mounting shell 1. The light blocking strip 4 is nested in the gap between the screen body 2, the heat dissipation substrate and the mounting shell 1. The top of the strip 4 is nested in the nesting groove 102, the lower surface of the heat dissipation substrate 3 is evenly fixed with heat dissipation fins 31, and the heat dissipation fins 31 are evenly opened with positioning notches 32, the positioning bracket 5 is installed under the heat dissipation substrate 3 and keeps abutting against the positioning notch 32, a sliding block 51 is slidably installed on one side of the positioning bracket 5, and a positioning pin shaft 52 extending to the outside of the positioning bracket 5 is fixed on the sliding block 51, the positioning pin shaft 52 is rotatably installed on the inner wall of the installation shell 1, and the other side of the positioning bracket 5 is fixed to the inside of the installation shell 1 by an inner bolt 53.

[0028] The light-shielding strip 4 is nested in the nesting groove 102 for assembly, which can ensure that the light-shielding strip 4 is effectively fitted with the top edge of the screen body 2, while achieving that the light-shielding strip 4 is effectively hidden on the inner side of the mounting shell 1 and does not leak out, thereby improving the aesthetics and effectively preventing light leakage from the edge of the display window 101 of the mounting shell 1 when the screen body 2 is turned on.

[0029] An upper pad 103 is also provided on the inner wall of the mounting housing 1. The size of the heat dissipation substrate 3 is larger than that of the screen body 2, so that the heat dissipation substrate 3 can be nested and assembled on the upper pad 103, and the screen body 2 can be assembled above the upper pad 103. A lower pad 104 is also provided on the inner wall of the mounting housing 1 and arranged below the upper pad 103. The size of the lower pad 104 is larger than that of the lower pad 104, so as to ensure that the positioning bracket 5 is stably assembled at the lower pad 104, thereby effectively positioning the screen body 2 and the heat dissipation substrate 3.

[0030] One side of the positioning bracket 5 can be assembled in the installation shell 1 through the positioning pin 52. When the positioning bracket 5 is flipped downward with the positioning pin 52, the light blocking strip 4, the screen body 2 and the heat dissipation substrate 3 can be quickly and effectively installed.

[0031] The heat generated by the screen body 2 during operation can be transferred to the heat dissipation substrate 3 and the heat dissipation flaps 31 thereon to ensure the heat dissipation effect of the screen body 2 .

[0032] In order to facilitate efficient and rapid assembly of various components in the mounting housing 1 while ensuring the heat dissipation effect of the screen body 2, the following technical solution is provided.

[0033] An assembly opening 105 is provided below the installation housing 1 , and a protective cover plate 106 is nested and installed at the assembly opening 105 . The protective cover plate 106 is fixed to the installation housing 1 by outer bolts 107 . A heat dissipation through hole 112 is provided on the protective cover plate 106 .

[0034] The arrangement of the assembly opening 105 and the anti-slip cover plate thereon facilitates the assembly of the screen body 2 in the mounting shell 1. The screen body 2 and the heat dissipation substrate 3 fixedly assembled thereon are inserted from the bottom of the mounting shell 1 and nested in the display window 101. After being fixed by the positioning bracket 5, the protective cover is fixed to the assembly opening 105 below the mounting shell 1 by the outer bolts 107.

[0035] The setting of the heat dissipation holes 112 on the protective cover 106 facilitates air circulation to quickly dissipate the heat generated inside the installation shell 1. The specific principle is that the heat generated by the screen body 2 is absorbed by the heat dissipation substrate 3 and then dissipated by the heat dissipation sheet 31. The heat dissipation holes 112 ensure air circulation to bring the heat out of the installation shell 1.

[0036] In order to ensure the stable assembly of the screen body 2 and realize the display and touch control functions, the following technical solutions are provided.

[0037] The screen body 2 includes a protective film 21, a touch screen 22, an adhesive layer 23, and a display screen 24 which are arranged from top to bottom and bonded in sequence. The protective film 21 is arranged on the inner side of the display window 101 and adheres to the inner wall of the display window 101. The touch screen 22 is arranged on the inner side of the display window 101 and adheres to the bottom of the display window 101. The bottom of the display screen 24 is fixedly assembled on the upper surface of the heat dissipation substrate 3.

[0038] The protective film 21 can effectively protect the touch screen as an external screen to avoid damage to the touch screen 22 when the touch screen 22 is touched and operated. The display screen 24 can realize the screen display function and cooperate with the touch screen 22 to realize the touch control and display requirements of the screen body 2. The adhesive layer 23 is provided to realize the effective connection between the touch screen 22 and the display screen 24.

[0039] The side wall of the mounting housing 1 is also equipped with a data interface 108, a power interface 110 and an operation button 109. A flexible circuit board 25 is connected to one side of the touch screen 22 and the display screen 24, and the flexible circuit board 25 is connected to the data interface 108, the power interface 110 and the operation button 109 to ensure normal power supply, data transmission and operation of the working state of the screen body 2.

[0040] As an implementation mode, for the convenience of the provided product also having an audio playback function, a speaker (not shown in the drawings) may be installed on the mounting housing 1, and the speaker is connected to the data interface 108, the power interface 110, and the operation button 109 through corresponding lines to achieve normal audio playback.

[0041] In order to ensure that the positioning bracket 5 can effectively position the heat dissipation substrate 3 and ensure that the screen body 2 is stably assembled in the mounting housing 1 without affecting the heat dissipation effect, the following technical solution is provided.

[0042] The positioning bracket 5 includes an outer frame 54 and positioning strips 55 evenly fixed in the outer frame 54 . The sliding block 51 and the positioning pin shaft 52 are assembled on the positioning bracket 5 . The positioning strips 55 are nested and matched with the positioning notches 32 .

[0043] The outer frame 54 is arranged in the lower pad 104 and keeps in close contact so that the positioning bracket 5 can be stably assembled, and the inner bolt 53 is screwed into the lower pad 104 and effectively fixes the positioning bracket 5. The positioning notch 32 is expanded so that the positioning bar 55 that rotates with the outer frame 54 can effectively abut against the positioning notch 32 and achieve a positioning effect.

[0044] In order to facilitate the assembly of the positioning pin 52 and the sliding block 51 in the outer frame 54 and perform telescopic movement, ensure that the positioning pin 52 can be stably assembled in the installation shell 1, and facilitate the disassembly and assembly of the positioning bracket 5 on the installation shell 1, the following technical solution is provided.

[0045] A sliding groove 541 is provided in the outer frame 54, and the sliding block 51 is slidably installed in the sliding groove 541, and the sliding block 51 is fixedly connected to an operation key 511 arranged on the outside of the outer frame 54, and a guide column 542 is fixedly connected in the sliding groove 541 to maintain sliding insertion with the sliding block 51, and a support spring 543 is wound on the guide column 542, and the two ends of the support spring 543 are respectively kept in contact with the inner wall of the sliding groove 541 and the sliding block 51, and the inner wall of the outer frame 54 is provided with a slot that is plugged into and combined with the positioning pin shaft 52.

[0046] The setting of the slide groove 541 and the guide column 542 can ensure the stable telescopic movement of the sliding block 51 and the positioning pin 52 thereon to control the telescopic posture of the positioning pin 52. The support spring 543 can drive the sliding block 51 and the positioning pin 52 to slide toward the outside of the slide groove 541 in a natural state, so that the positioning pin 52 can be stably assembled in the slot, so as to realize the effective rotation of the positioning bracket 5 in the installation shell 1. By controlling the sliding of the operation key 511, the sliding block 51 can be driven to stabilize the sliding rod, so that the positioning pin 52 can be retracted, which is convenient for assembling the positioning bracket 5 in the installation shell 1.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A light leakage-proof touch screen, characterized in that: The invention comprises a mounting shell (1), a screen body (2), a heat dissipation substrate (3), a light shielding strip (4), and a positioning bracket (5) mounted in the mounting shell (1); a display window (101) is provided on the top of the mounting shell (1); the heat dissipation substrate (3) is fixedly mounted on the bottom of the screen body (2); the heat dissipation substrate (3) and the screen body (2) are nested and mounted on the outside of the display window (101); a nesting groove (102) arranged on the periphery of the display window (101) is provided on the inner side of the mounting shell (1); the light shielding strip (4) is nested in the gap between the screen body (2), the heat dissipation substrate and the mounting shell (1); and the top of the light shielding strip (4) is provided with a plurality of holes. The heat dissipation substrate (3) is nested in the nesting groove (102), the lower surface of the heat dissipation substrate (3) is evenly fixed with heat dissipation fins (31), and the heat dissipation fins (31) are evenly opened with positioning notches (32), the positioning bracket (5) is installed below the heat dissipation substrate (3) and keeps contact with the positioning notch (32), a sliding block (51) is slidably installed on one side of the positioning bracket (5), and a positioning pin shaft (52) extending to the outside of the positioning bracket (5) is fixed on the sliding block (51), the positioning pin shaft (52) is rotatably installed on the inner wall of the installation shell (1), and the other side of the positioning bracket (5) is fixed to the inside of the installation shell (1) by an inner layer bolt (53).

2. The anti-light leakage touch screen according to claim 1, characterized in that: An assembly opening (105) is provided at the bottom of the installation shell (1), and a protective cover plate (106) is nested and installed at the assembly opening (105); the protective cover plate (106) is fixed to the installation shell (1) by outer bolts (107), and a heat dissipation through hole (112) is provided on the protective cover plate (106).

3. The anti-light leakage touch screen according to claim 1, characterized in that: The screen body (2) comprises a protective film (21), a touch screen (22), an adhesive layer (23), and a display screen (24) which are arranged from top to bottom and bonded in sequence, the protective film (21) being arranged on the inner side of the display window (101) and being bonded to the inner wall of the display window (101), the touch screen (22) being arranged on the inner side of the display window (101) and being bonded to the bottom of the display window (101), and the bottom of the display screen (24) being fixedly mounted on the upper surface of the heat dissipation substrate (3).

4. The anti-light leakage touch screen according to claim 1, characterized in that: The positioning bracket (5) comprises an outer frame (54) and a positioning strip (55) uniformly fixed in the outer frame (54); the sliding block (51) and the positioning pin shaft (52) are assembled on the positioning bracket (5); and the positioning strip (55) is nested and matched with the positioning notch (32).

5. The anti-light leakage touch screen according to claim 4, characterized in that: The outer frame (54) is provided with a slide groove (541), the sliding block (51) is slidably installed in the slide groove (541), and the sliding block (51) is fixedly connected with an operation key (511) arranged on the outer side of the outer frame (54), the slide groove (541) is fixedly connected with a guide column (542) which is slidably connected with the sliding block (51), and the guide column (542) is wound with a support spring (543), and the two ends of the support spring (543) are respectively in contact with the inner wall of the slide groove (541) and the sliding block (51), and the inner wall of the outer frame (54) is provided with a slot which is plugged and combined with the positioning pin shaft (52).

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