Outdoor advertising machine with heat insulation function
By introducing a flexible connecting partition block and a heat-insulating and light-transmitting layer into the outdoor advertising machine, combined with a separate control box and display module structure, the problem of temperature rise caused by sunlight exposure of LCD glass is solved, extending service life and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUA ER DISPLAY TECH CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-06-16
AI Technical Summary
The LCD glass of existing outdoor advertising machines is prone to aging and damage due to the increased temperature caused by sunlight exposure. Furthermore, the existing heat dissipation systems are mainly designed for the backlight module and control module, and have failed to effectively solve the heat dissipation problem of the LCD panel module.
Design an outdoor advertising machine with heat insulation function. Use flexible connecting partition blocks and heat insulation and light transmission layer to separate the display module from the heat insulation and light transmission layer to create an air heat insulation zone. Heat is conducted through air with poor thermal conductivity. The control box is set in the shell and separated from the display module to optimize the heat dissipation structure.
It effectively reduces the temperature rise of the display module, extends its service life, reduces maintenance costs, and improves the protective performance and aesthetics of the advertising machine.
Smart Images

Figure CN224366517U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of advertising machine display screen devices, specifically an outdoor advertising machine with heat insulation function. Background Technology
[0002] Because outdoor advertising displays are installed outdoors, heat from sunlight can easily be transferred to the LCD glass. In particular, since the protective glass of the advertising display is fully bonded to the LCD panel, the temperature of the LCD glass rises as heat from the sunlight accumulates, causing the LCD glass to age and be damaged easily, thus shortening its lifespan.
[0003] While some existing advertising machines have heat dissipation systems, they mainly focus on ventilating and cooling the backlight module and control module, without paying much attention to heat dissipation for the LCD panel module on the front of the advertising machine. Therefore, further improvements are needed. Utility Model Content
[0004] This utility model addresses the above-mentioned problems by proposing an outdoor advertising machine with heat insulation function, aiming to solve the technical problems in the background art.
[0005] To achieve the above objectives, this utility model provides an outdoor advertising machine with heat insulation function, comprising:
[0006] The main body of the advertising machine includes a housing and a display module connected to the housing;
[0007] Flexible connecting partition blocks;
[0008] A heat-insulating and light-transmitting layer covers the surface of the display module; multiple flexible connecting partitions are disposed between the heat-insulating and light-transmitting layer and the display module to separate the heat-insulating and light-transmitting layer from the display module into an air-insulating zone; and the multiple flexible connecting partitions are distributed along the edge of the display module and separated from each other.
[0009] Furthermore, the housing includes a back panel, and the display module includes a backlight, which is attached to and connected to the back panel.
[0010] Furthermore, the main body of the advertising machine includes a control box, which is located outside the housing and connected to the back plate of the housing; the control module in the control box is electrically connected to the display module.
[0011] Furthermore, the heat-insulating and light-transmitting layer includes a light-transmitting glass layer and a heat-insulating layer connected to the light-transmitting glass layer.
[0012] Furthermore, the housing includes a side frame, a back plate, and a support member; the heat-insulating and light-transmitting layer and the back plate are respectively disposed on both sides of the side frame, and the support member is disposed on the inner wall side of the side frame; the support member is connected to the side frame and / or the back plate; and the support member and the side frame enclose a recessed groove, into which the heat-insulating and light-transmitting layer falls; the end face of the support member that abuts against the heat-insulating and light-transmitting layer and the end face of the flexible connecting partition block that abuts against the heat-insulating and light-transmitting layer are flush.
[0013] Furthermore, the display module is connected to the back plate of the housing through the reflective substrate; the light source is a plurality of light strips arranged at intervals; or, the light source is a light panel, the light panel is provided with a plurality of sets of light beads, each set of light beads arranged at intervals.
[0014] Furthermore, the flexible connecting partition block is a buffer cotton block, and an adhesive layer is provided on its end face. The flexible connecting partition block is used to connect the heat insulation and light transmission layer and / or the display module by adhesive bonding.
[0015] Furthermore, the display module is separated from the side frame and support members in the housing and is not in contact with them.
[0016] Furthermore, the display module includes a backlight and a liquid crystal module. The backlight includes a light source and a reflective film. The reflective film includes a reflective base film and a side reflective film connected to the side of the reflective base film. The side reflective film is obliquely disposed and connected to the liquid crystal module. The reflective base film has a light-transmitting hole corresponding to the light source. The display module is connected to the bottom plate of the housing through the reflective base film.
[0017] Further, the display module includes a liquid crystal module, a backlight, and a reinforcing support frame; the reinforcing support frame includes a bottom frame, a first connecting frame, and a second connecting frame; the reinforcing support frame is arranged around the display module; the bottom frame is connected to the back plate of the housing; the first connecting frame is connected to the bottom frame; the second connecting frame is connected to the bottom frame and / or the first connecting frame; the liquid crystal module includes a light guide plate disposed on the end face of the backlight, a diffusion film disposed on the surface of the light guide plate, a first brightness enhancement film disposed on the surface of the diffusion film, a second brightness enhancement film disposed on the surface of the first brightness enhancement film, and liquid crystal glass adjacent to the surface of the second brightness enhancement film; the flexible connecting partition block is disposed on the outer end face of the second connecting frame; the bottom frame and the first connecting frame connect and fix the reflective film, light guide plate, diffusion film, first brightness enhancement film, and second brightness enhancement film in the backlight; the first connecting frame and the second connecting frame connect and fix the liquid crystal glass, and the liquid crystal glass is isolated from the second brightness enhancement film and does not contact it.
[0018] Compared with the prior art, the outdoor advertising machine with heat insulation function provided by this utility model can separate the display module from the heat insulation and light transmission layer through the air heat insulation zone. The heat accumulated on the heat insulation and light transmission layer can only be conducted to the display module through the air with poor thermal conductivity. Furthermore, the flexible connecting partition block that indirectly contacts the display module and the heat insulation and light transmission layer is also separated from each other. The heat transfer from the heat insulation and light transmission layer to the display module is also well controlled through the flexible connecting partition block.
[0019] Therefore, the temperature rise of the display module when exposed to sunlight outdoors is optimized, which prevents the display module from aging, extends the service life of the display module, and reduces maintenance costs. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of an outdoor advertising machine with heat insulation function according to this application.
[0021] Figure 2 This is a schematic diagram of the structure of an outdoor advertising machine with heat insulation function according to this application from another perspective.
[0022] Figure 3 This is an exploded structural diagram of an outdoor advertising machine with heat insulation function according to this application.
[0023] Figure 4 This is an exploded view of the structure of an outdoor advertising machine with heat insulation function according to this application.
[0024] Figure 5 This is a partial cross-sectional view of some components of an outdoor advertising machine with heat insulation function according to this application.
[0025] Figure 6 This is a schematic diagram of the backlight and back panel structure of an outdoor advertising machine with heat insulation function according to this application.
[0026] Figure 7 This is an exploded view of some components of an outdoor advertising machine with heat insulation function according to this application.
[0027] The reference numerals in the figure are as follows: 1. Housing; 110. Back plate; 120. Side frame; 125. Recessed groove; 130. Support member; 2. Display module; 210. Backlight; 211. Light source; 212. Reflective film; 2121. Reflective bottom film; 2122. Side reflective film; 220. Liquid crystal module; 221. Light guide plate; 222. Diffuser film; 223. First brightness enhancement film; 224. Second brightness enhancement film; 225. Liquid crystal glass; 230. Reinforcing support frame; 231. First connecting frame; 232. Second connecting frame; 233. Bottom frame; 3. Flexible connecting partition block; 4. Heat-insulating and light-transmitting layer; 6. Control box; 610. Control module. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. It is understood that the accompanying drawings are provided for reference and illustration only and are not intended to limit the present utility model. The connection relationships shown in the drawings are only for clear description and do not limit the connection method.
[0029] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.
[0030] It should also be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0031] Please refer to Figures 1-7 This embodiment provides an outdoor advertising machine with heat insulation function, including:
[0032] The main body of the advertising machine includes a housing 1 and a display module 2 connected to the housing 1;
[0033] Flexible connecting separator 3;
[0034] A heat-insulating and light-transmitting layer 4 covers the surface of the display module 2; multiple flexible connecting partition blocks 3 are disposed between the heat-insulating and light-transmitting layer 4 and the display module 2 to separate the heat-insulating and light-transmitting layer 4 and the display module 2 into an air heat-insulating zone; and multiple flexible connecting partition blocks 3 are distributed along the edge of the display module 2 and separated from each other.
[0035] The heat-insulating and light-transmitting layer 4 is used to block and isolate heat generated by sunlight. This layer can block most infrared and ultraviolet rays, protecting the display module 2 from significant damage. The flexible connecting partition block 3 prevents the traditional heat-insulating and light-transmitting layer 4 from being attached to the display module 2. Since sunlight continuously shines on the heat-insulating and light-transmitting layer 4, heat accumulates and the layer will still heat up. Therefore, the advertising machine body provided in this application has an air-insulated zone. This design separates the display module 2 from the heat-insulating and light-transmitting layer 4, allowing the heat accumulated on the heat-insulating and light-transmitting layer 4 to be conducted to the display module 2 only through the air, which has poor thermal conductivity. Furthermore, the flexible connecting partition block 3, which indirectly contacts the display module 2 and the heat-insulating and light-transmitting layer 4, is also separated from each other, preventing the display module 2, the heat-insulating and light-transmitting layer 4, and the flexible connecting partition block 3 from forming a sealed heat storage cavity. The transfer of heat from the heat-insulating and light-transmitting layer 4 to the display module 2 through the flexible connecting partition block 3 is also well controlled.
[0036] Therefore, the temperature rise of display module 2 when exposed to sunlight outdoors is optimized, which prevents display module 2 from aging, extends the service life of display module 2, and reduces maintenance costs.
[0037] In addition to its own heat insulation function, the heat-insulating and light-transmitting layer 4 also protects the display module 2. If an external object impacts the heat-insulating and light-transmitting layer 4, it absorbs the impact, and combined with the flexible connecting partition block 3 providing flexible buffering, and the air-insulating heat-insulating zone between the heat-insulating and light-transmitting layer 4 and the display module 2, generally only the heat-insulating and light-transmitting layer 4 will break, while the more expensive display module 2 will be protected. Alternatively, the heat-insulating and light-transmitting layer 4 may not break at all. This avoids the drawbacks of traditional advertising machine external protective glass and display screens being fully bonded together, which would break together upon impact from external objects; it also avoids the disadvantages of a fully bonded structure where air bubbles can easily form between the protective glass and the display screen.
[0038] Preferably, the heat-insulating and light-transmitting layer 4 has a high transparency and light transmittance, which can ensure that the display module 2 does not affect the external display effect.
[0039] Please refer to Figure 5 and Figure 6The housing 1 includes a back plate 110, and the display module 2 includes a backlight 210, which is attached to and connected to the back plate 110.
[0040] When the backlight 210 is working, it converts electrical energy into light and heat energy. This is especially important for outdoor advertising displays, where high brightness generates even more heat. By attaching the backlight 210 to the back panel 110, which is in direct contact with the ambient air, the heat generated by the backlight 210 can be directly dissipated into the environment, effectively reducing the internal heat of the display module 2 and thus minimizing the risk of damage. This avoids the drawbacks of traditional advertising display backlight assemblies, which are located inside the housing and have a gap between them and the back cover, resulting in poor heat dissipation.
[0041] Please refer to Figure 2 and Figure 4 The main body of the advertising machine includes a control box 6, which is located outside the housing 1 and connected to the back plate 110 of the housing 1; the control module 610 in the control box 6 is electrically connected to the display module 2.
[0042] Traditional advertising machines house both the display screen and drive control components within a single cavity. The heat generated during operation can accumulate, easily causing internal components to age prematurely. In contrast, the design provided in this application features a separate housing 1 for the display module 2 and a separate control box 6 for the control module 610. This separation of the two cavities prevents heat buildup and its impact. Furthermore, the control box 6 and housing 1 can be designed to conform to the volume of the components, avoiding the drawbacks of traditional advertising machine designs that consist of a large, single housing, resulting in a less lightweight and portable machine, and wasting materials used in manufacturing the housing panel.
[0043] Please refer to Figure 1 and Figure 3 The heat-insulating and light-transmitting layer 4 includes a light-transmitting glass layer and a heat-insulating layer connected to the light-transmitting glass layer.
[0044] In some embodiments, the light-transmitting glass layer may be made of tempered glass.
[0045] The heat-insulating and light-transmitting layer 4 can be configured using the structure shown in the table below:
[0046] type structure Insulating glass The light-transmitting glass layer consists of multiple layers of glass, while the heat insulation layer is filled with dry air or an inert gas (such as argon), forming a sealed air layer that blocks heat conduction and convection. Low-E glass The heat insulation layer is a metal or oxide film (such as silver or indium tin oxide) plated onto the surface of the transparent glass layer, which reflects infrared rays and allows visible light to pass through. Vacuum glass The light-transmitting glass layer is formed by evacuating a vacuum between two pieces of glass to create a heat insulation layer, eliminating heat transfer from the gas, and the edges are sealed with metal. Laminated glass The light-transmitting glass layer consists of two panes of glass sandwiching a PVB / EVA film as an insulation layer to block heat transfer. Heat-absorbing glass The heat insulation layer is made by adding metal oxides such as iron and cobalt to the transparent glass layer to absorb solar radiation heat. Film-coated glass A heat-insulating film (metal or ceramic coating) is applied to the surface of the transparent glass layer to reflect or absorb heat. aerogel glass The insulation layer is a hollow layer filled with nano-aerogel (with extremely low thermal conductivity). Composite heat-insulating glass Combined structures (such as a hollow transparent glass layer + Low-E insulation layer, or a transparent glass layer that is sandwiched between two layers + a hollow insulation layer).
[0047] Please refer to Figure 3 , Figure 5 and Figure 7The housing 1 includes a side frame 120, a back plate 110, and a support member 130; the heat-insulating and light-transmitting layer 4 and the back plate 110 are respectively disposed on both sides of the side frame 120, and the support member 130 is disposed on the inner wall side of the side frame 120; the support member 130 is connected to the side frame 120 and / or the back plate 110; and the support member 130 and the side frame 120 enclose a recess 125, into which the heat-insulating and light-transmitting layer 4 falls; the end face of the support member 130 that abuts against the heat-insulating and light-transmitting layer 4 and the end face of the flexible connecting partition block 3 that abuts against the heat-insulating and light-transmitting layer 4 are flush.
[0048] The side frame 120 serves to protect and enclose the display module 2 from the top, bottom, left, and right sides. The heat-insulating and light-transmitting layer 4 and the back panel 110 enclose the front and back of the display module 2, respectively.
[0049] The support member 130 forms a support structure, strengthening the structural strength of the side frame 120, and also supports the edges of the heat-insulating and light-transmitting layer 4. In a preferred embodiment, the support member 130 is connected to the side frame 120 and the back plate 110 by screws.
[0050] The heat-insulating and light-transmitting layer 4 falls into the sink 125, making the outer surface of the heat-insulating and light-transmitting layer 4 flush with the side frame 120 on the same side, thus increasing the aesthetics of the advertising machine.
[0051] The heat-insulating and light-transmitting layer 4 can be connected to the shell 1 by adhesive bonding, specifically by adhesive bonding of the side frame 120 and / or the support member 130.
[0052] Please refer to Figure 3 and Figure 7 The flexible connecting partition block 3 is a buffer cotton block, and an adhesive layer is provided on its end face. The flexible connecting partition block 3 is connected to the heat insulation and light transmission layer 4 and / or the display module 2 by adhesive bonding.
[0053] Please refer to Figure 5 and Figure 7 The display module 2 includes a backlight 210 and a liquid crystal module 220. The backlight 210 includes a light source 211 and a reflective film 212. The reflective film 212 includes a reflective base film 2121 and a side reflective film 2122 connected to the side of the reflective base film 2121. The side reflective film 2122 is inclined and connected to the liquid crystal module 220. The reflective base film 2121 has a light-transmitting hole corresponding to the light source 211.
[0054] This design can optimize the material input of the reflective film 212, reduce material costs, and at the same time provide a better reflective and light-concentrating effect.
[0055] Please refer to Figure 6The display module 2 can be connected to the back plate 110 of the housing 1 by means of screws and studs passing through the reflective bottom film 2121; the light source 211 is a plurality of light strips arranged at intervals; or, the light source 211 is a light board, the light board is provided with a plurality of sets of light beads, each set of light beads is arranged at intervals, which can reduce heat accumulation, avoid the use of a whole light board, and reduce the weight of the advertising machine.
[0056] Please refer to Figure 3 and Figure 5 , Figure 7 The display module 2 includes a liquid crystal module 220, a backlight 210, and a reinforcing support frame 230. The reinforcing support frame 230 includes a bottom frame 233, a first connecting frame 231, and a second connecting frame 232. The reinforcing support frame 230 surrounds the display module 2. The bottom frame 233 is connected to the back plate 110 of the housing 1. The first connecting frame 231 is connected to the bottom frame 233. The second connecting frame 232 is connected to the bottom frame 233 and / or the first connecting frame 231. The liquid crystal module 220 includes a light guide plate 221 disposed on the end face of the backlight 210, a diffusion film 222 disposed on the surface of the light guide plate 221, and a diffusion film 222 disposed on the surface of the backlight 210. The backlight 210 includes a first brightness enhancement film 223 on the surface of the diffuser 222, a second brightness enhancement film 224 on the surface of the first brightness enhancement film 223, and a liquid crystal glass 225 adjacent to the surface of the second brightness enhancement film 224. The flexible connecting partition block 3 is located on the outer end face of the second connecting frame 232. The bottom frame 233 and the first connecting frame 231 connect and fix the reflective film 212, light guide plate 221, diffuser 222, first brightness enhancement film 223, and second brightness enhancement film 224 edges in the backlight 210. The first connecting frame 231 and the second connecting frame 232 connect and fix the liquid crystal glass 225, and the liquid crystal glass 225 is isolated from the second brightness enhancement film 224 and does not contact it.
[0057] The reinforced support frame 230, through the above design, not only supports the LCD module 220 but also improves structural strength.
[0058] The reinforcing support frame 230 is spaced apart from the side frame 120 and support member 130 in the housing 1, thus separating the display module 2 from the side frame 120 and support member 130 in the housing 1 so that they do not contact each other. This design ensures that the heat generated when the side frame 120 in the housing 1 is exposed to sunlight is not conducted to the reinforcing support frame 230 and display module 2 through the side frame 120 and support member 130.
[0059] In some embodiments, the first connecting frame 231 and the second connecting frame 232 are rectangular frames with a cross-section approximately "L" shaped, and may be made of angle iron.
[0060] In the specification and claims of this application, the terms "comprising / including" and "having / including" and variations thereof are used to specify the presence of the stated features, values, steps or components, but do not exclude the presence or addition of one or more other features, values, steps, components or combinations thereof.
[0061] Some features of this invention are described in different embodiments for clarity; however, these features may also be described in combination in a single embodiment. Conversely, some features of this invention are described only in a single embodiment for brevity; however, these features may also be described individually or in any suitable combination in different embodiments.
[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An outdoor advertising machine with heat insulation function, characterized in that, include: The main body of the advertising machine includes a housing and a display module connected to the housing; Flexible connecting partition blocks; A heat-insulating and light-transmitting layer covers the surface of the display module; multiple flexible connecting partitions are disposed between the heat-insulating and light-transmitting layer and the display module to separate the heat-insulating and light-transmitting layer from the display module into an air-insulating zone; and the multiple flexible connecting partitions are distributed along the edge of the display module and separated from each other.
2. An outdoor advertising machine with heat insulation function according to claim 1, characterized in that, The housing includes a back panel, and the display module includes a backlight, which is attached to and connected to the back panel.
3. An outdoor advertising machine with heat insulation function according to claim 1, characterized in that, The main body of the advertising machine includes a control box, which is located outside the housing and connected to the back plate of the housing; the control module in the control box is electrically connected to the display module.
4. An outdoor advertising machine with heat insulation function according to claim 1, characterized in that, The heat-insulating and light-transmitting layer includes a light-transmitting glass layer and a heat-insulating layer connected to the light-transmitting glass layer.
5. An outdoor advertising machine with heat insulation function according to claim 1, characterized in that, The housing includes a side frame, a back plate, and a support member; the heat-insulating and light-transmitting layer and the back plate are respectively disposed on both sides of the side frame, and the support member is disposed on the inner wall side of the side frame; the support member is connected to the side frame and / or the back plate; and the support member and the side frame enclose a recessed groove, into which the heat-insulating and light-transmitting layer falls; the end face of the support member that abuts against the heat-insulating and light-transmitting layer and the end face of the flexible connecting partition block that abuts against the heat-insulating and light-transmitting layer are flush.
6. An outdoor advertising machine with heat insulation function according to claim 1, characterized in that, The flexible connecting partition block is a buffer cotton block, and an adhesive layer is provided on its end face. The flexible connecting partition block is used to connect the heat insulation and light transmission layer and / or the display module by adhesive bonding.
7. An outdoor advertising machine with heat insulation function according to claim 5, characterized in that, The display module is separated from the side frame and support components in the housing and is not in contact with them.
8. An outdoor advertising machine with heat insulation function according to claim 1, characterized in that, The display module includes a backlight and a liquid crystal module. The backlight includes a light source and a reflective film. The reflective film includes a reflective base film and a side reflective film connected to the side of the reflective base film. The side reflective film is inclined and connected to the liquid crystal module. The reflective base film has a light-transmitting hole corresponding to the light source.
9. An outdoor advertising machine with heat insulation function according to claim 8, characterized in that, The display module is connected to the back plate of the housing through the reflective substrate; the light source is a plurality of light strips arranged at intervals; or, the light source is a light panel, the light panel is provided with a plurality of sets of light beads, each set of light beads arranged at intervals.
10. An outdoor advertising machine with heat insulation function according to claim 1, characterized in that, The display module includes a liquid crystal module, a backlight, and a reinforcing support frame. The reinforcing support frame includes a bottom frame, a first connecting frame, and a second connecting frame. The reinforcing support frame surrounds the display module. The bottom frame is connected to the back plate of the housing. The first connecting frame is connected to the bottom frame. The second connecting frame is connected to the bottom frame and / or the first connecting frame. The liquid crystal module includes a light guide plate disposed on the end face of the backlight, a diffusion film disposed on the surface of the light guide plate, a first brightness enhancement film disposed on the surface of the diffusion film, a second brightness enhancement film disposed on the surface of the first brightness enhancement film, and liquid crystal glass adjacent to the surface of the second brightness enhancement film. The flexible connecting partition block is disposed on the outer end face of the second connecting frame. The bottom frame and the first connecting frame connect and fix the reflective film, light guide plate, diffusion film, first brightness enhancement film, and second brightness enhancement film in the backlight. The first connecting frame and the second connecting frame connect and fix the liquid crystal glass, and separate the liquid crystal glass from the second brightness enhancement film to prevent contact.