CN217846836U - Display module and intelligent passenger cabin streaming media rearview mirror - Google Patents

Abstract

The utility model discloses a display module, including display screen, backlight module, heat insulating board and heat dissipation shell, the display screen is installed on the heat dissipation shell and is located the backlight module top, backlight module includes the light guide plate and installs the LED lamp strip in light guide plate one side, the heat dissipation shell includes diapire and first lateral wall, the laminating of the lamp plate of LED lamp strip is fixed in the internal surface of first lateral wall, the heat insulating board sets up on the diapire, and a lateral wall and the LED lamp strip interval of heat insulating board are relative, the light guide plate is located on the heat insulating board, and one side of light guide plate forms and is relative with LED lamp strip interval; the heat insulation plate is arranged between the light guide plate and the bottom wall at intervals, a heat insulation cavity formed by interval convex strips at intervals is formed between the light guide plate and the bottom wall, and the interval convex strips are supported between the light guide plate and the bottom wall. The utility model discloses the light guide plate is relative and through the heat insulating board that has the cavity and the contact of heat dissipation shell with LED lamp strip interval, longe-lived. The utility model also discloses an intelligence passenger cabin streaming media rear-view mirror.

Description

Display module and intelligent passenger cabin streaming media rearview mirror

Technical Field

The utility model relates to a display module especially relates to display module's heat dissipation is thermal-insulated.

Background

The automobile rearview mirrors are positioned on the left side and the right side of the head of the automobile and in front of the inside of the automobile. The automobile rearview mirror reflects the conditions of the rear, the side and the lower part of the automobile, so that a driver can indirectly see the conditions of the positions clearly, the automobile rearview mirror plays the role of a second eye and enlarges the visual field range of the driver. Along with the development of science and technology, to installing the inside rear-view mirror of car, generally dispose electronic mirror surface, can possess dual function to this kind of rear-view mirror that disposes electronic mirror surface, both can be used to ordinary speculum, and the vehicle in reflection rear opens by force, can be used to electronic display again, through the image of electronic display screen display rear vehicle.

Because the space is limited in the rear-view mirror, the volume that display module assembly need set up is very little, and display module assembly's heat dissipation demand is just than higher. The general display module comprises from top to bottom: display screen, optical element, light guide plate, reflection stratum, LED lamp strip and drain pan, LED lamp strip often adorn the lateral part of light guide plate and follow the light guide plate lateral part and send out the light to the light guide plate, often set display module's drain pan to the heat dissipation shell among the prior art, the drain pan has the lateral wall with LED lamp strip contact, and the during operation, the heat of LED lamp strip is followed the lateral wall and is transmitted the drain pan, again from the drain pan output. Because the face and the drain pan of light guide plate set up relatively, direct contact perhaps contacts through the reflecting layer, during the heat dissipation, often will pass back light guide plate department when the heat that transmits the drain pan dispels the heat, causes the influence to the life-span of light guide plate.

Therefore, a display module and a streaming media rearview mirror for solving the above problems are needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a display module assembly and streaming media rear-view mirror sets up the heat insulating board that forms thermal-insulated cavity between backlight unit's light guide plate and heat dissipation shell, and heat insulating board and LED lamp strip interval set up, effectively prevents that the heat transfer of heat dissipation shell from reaching the light guide plate, increases backlight unit's life-span.

In order to realize the above purpose, the utility model discloses a display module assembly, including display screen, backlight unit and heat dissipation shell, backlight unit install in the heat dissipation shell, the display screen install in on the heat dissipation shell and be located the backlight unit top, backlight unit include the light guide plate and install in the LED lamp strip of light guide plate one side. The display module further comprises a heat insulation plate, the heat dissipation shell comprises a bottom wall and a first side wall, a lamp panel of the LED lamp bar is attached and fixed to the inner surface of the first side wall, the heat insulation plate is arranged on the bottom wall, and one side wall of the heat insulation plate is opposite to the LED lamp bar in interval; the light guide plate is arranged on the heat insulation plate, and one side of the light guide plate is provided with a light incident surface opposite to the distance between the LED light bars; the heat insulation plate is arranged between the light guide plate and the bottom wall at intervals, a heat insulation cavity formed by interval raised lines at intervals is formed between the light guide plate and the bottom wall, and the interval raised lines are supported between the light guide plate and the bottom wall.

Compared with the prior art, the utility model discloses a heat insulating board and LED lamp strip interval set up, light guide plate and LED lamp strip interval set up, make the heat that LED lamp strip sent out can not directly get into the volume of heat insulating board and light guide plate, make the heat insulating board not only can separate light guide plate and radiating shell, reduce the heat that transmits the diapire from LED lamp strip and transmit the volume of light guide plate in reverse, still make the heat of LED lamp strip can not directly transmit heat insulating board and light guide plate, prevent to generate heat for a long time and influence the life-span of light guide plate and other optical element.

Preferably, the heat insulation plate is a heat-resistant plastic part, the heat transfer efficiency is low, and the heat transfer rate is far lower than that of the heat dissipation shell.

Specifically, the heat insulation plate is a PC, but the heat insulation plate may be other plastic parts, and is not limited to a PC.

Preferably, the heat insulation plate comprises a heat insulation body with two opposite side surfaces being planes and interval convex strips convexly arranged on one side surface of the heat insulation body close to the heat dissipation shell, the heat insulation body not only favorably increases the strength of the heat insulation plate, but also enables heat transmitted by the interval convex strips to be separated by the heat insulation body, and further reduces the heat transmitted to the heat conduction plate.

Preferably, a reflective layer is disposed on the back of the light guide plate, and the heat insulation plate contacts the back of the reflective layer. The light reflecting layer can be adhered, electroplated or arranged on the back of the light guide plate in other modes.

Specifically, the light guide plate and the outer surfaces of the other side walls different from the side where the LED light bar is located are also respectively provided with a reflective layer.

Preferably, the backlight module further includes an optical element disposed between the light guide plate and the display screen, and the optical element includes an upper light-adding layer, a lower light-adding layer, and a diffusion film sequentially disposed from top to bottom between the display screen and the light guide plate. Otherwise, the specific structure and positional relationship of the optical elements are not limited to the present embodiment.

The backlight module further comprises an optical element arranged between the light guide plate and the display screen, at least two positioning bulges are convexly arranged on the upper surface of the light guide plate far away from the bottom wall, positioning holes corresponding to the positioning bulges are arranged on the optical element, and when the optical element is arranged on the light guide plate, the positioning bulges correspondingly penetrate through the positioning holes to align the optical element.

Preferably, the display screen pass through the plastic frame install in on the heat dissipation shell, the plastic frame is the annular and including the mount table that is located the top and being located the first annular lateral wall of mount table below, the heat dissipation shell is still including the cooperation first lateral wall encircles the second lateral wall on diapire border, first lateral wall with the second lateral wall encloses into second annular lateral wall, the display screen is fixed in on the mount table, first annular lateral wall overlap in outside the second annular lateral wall and with second annular lateral wall block, so that the plastic frame with the heat dissipation shell block is connected. The scheme ensures that the display screen is stably fixed on the heat dissipation shell, and the backlight module between the display screen and the heat dissipation shell is sealed in the heat dissipation shell, thereby not only effectively protecting the backlight module, but also being convenient for assembling the display module with other external components.

Specifically, the first annular side wall and the second annular side wall are provided with clamping assemblies which are clamped with each other, and the clamping assemblies limit the first annular side wall and the second annular side wall in the vertical direction.

In particular, the first annular side wall bottom wall and the second annular side wall top wall have mating components that mate in a male-female manner to locate the connection of the first annular side wall and the second annular side wall.

Specifically, a plurality of buffer sheets are arranged on the inner surface of the second side wall at intervals, and the buffer sheets are arranged between the side wall of the light guide plate and the second side wall to buffer and position the light guide plate. This scheme makes light guide plate and heat dissipation shell omnidirectional interval open, avoids the light guide plate to contact the heat dissipation shell from bottom and lateral part, further increases the life of light guide plate.

Wherein, this buffer plate is heat-resisting flexible material, for example the silica gel piece.

The buffer sheet is simultaneously spaced between the side wall of the heat insulation plate and the side wall of the heat dissipation shell.

Specifically, the inner surface of the second side wall and the position of the bottom wall close to the second side wall are provided with grooves, the buffer sheet is adhered to the bottom of the groove, and the depth of the groove at the position of the second side wall is smaller than the thickness of the buffer sheet. The groove not only indicates the mounting position of the buffer sheet, but also corrects the mounting angle and the mounting position of the buffer sheet when the buffer sheet is pasted.

Wherein, the depth of the groove on the second side wall becomes shallow gradually from bottom to top. This scheme makes the buffer sheet gradually approach the lateral wall of light guide plate from bottom to top right in longitudinal direction.

Specifically, the upper surface of mount table face nearly hollow region inboard inwards cave in be the step form in order to form one with display screen complex mounting groove, the display screen inlay in the mounting groove, and make the upper surface of display screen with the upper surface parallel and level of mount table, just mounting groove annular groove wall contacts completely the lateral wall of display screen provides the trench of installation for the display screen.

Preferably, in order to reduce the sawtooth stripes on the peripheral edge of the display screen, a black frame covering the peripheral edge of the display screen is arranged on the peripheral edge of the upper side of the plastic frame, and the black frame can cover the peripheral edge of the display screen, so that the peripheral edge does not have sawtooth patterns when the display screen displays.

Preferably, the connection of the interval convex strips is in a honeycomb shape or a grid shape.

Preferably, the heat dissipation casing is an aluminum casing, and a plurality of heat dissipation protruding strips are arranged on the lower surface of the heat dissipation casing in a protruding manner.

Preferably, a first supporting structure is formed between the first side wall of the heat dissipation shell and the corresponding side wall of the light guide plate, a second supporting structure is formed between the first side wall of the heat dissipation shell and the corresponding side wall of the heat insulation plate, the LED light bar avoiding supporting structure is installed on the first side wall, and the light guide plate and the heat insulation plate are respectively arranged at intervals between the first supporting structure and the LED light bar and between the second supporting structure and the LED light bar.

Specifically, the first support structure includes a first boss protruding toward the light guide plate along the first sidewall and/or a second boss protruding toward the first sidewall along the corresponding sidewall of the light guide plate, and the first boss and the second boss are disposed in an opposing or staggered manner; the second supporting structure comprises a third boss protruding towards the heat insulation plate along the first side wall and/or a fourth boss protruding towards the first side wall along the corresponding side wall of the heat insulation plate, and the third boss and the fourth boss are arranged oppositely or in a staggered manner; the first boss and the second boss may be the same boss or different bosses.

The utility model also discloses an intelligence passenger cabin streaming media rear-view mirror, including casing, speculum, display module assembly, control panel and bracket subassembly, the speculum install in the front opening part of casing, the display module assembly is foretell display module assembly, the display module assembly install in the casing and be located the speculum rear side, the control panel install in the casing and with the display module assembly electricity is connected, bracket unit mount in with the support in the casing display module assembly and part appear in outside the casing.

Preferably, the reflector includes a surface glass, a bottom glass, and a first polarizer sandwiched between the surface glass and the bottom glass, the first polarizer is a linear polarizer and can filter light in a first direction, the first direction is perpendicular to a front-back direction, the display module has a second polarizer and can filter light in a second direction, the second direction is perpendicular to the front-back direction, and the first polarizer can be used as the reflector in cooperation with a black display screen background when the display screen is black by only passing light in the second direction matched with the display screen, and when the display screen is bright, the first polarizer cooperates with the second polarizer to display a normal image without a reflector to be powered, and the light transmittance of the reflector does not need to be controlled.

Preferably, the bracket assembly is arranged on the back of the heat dissipation shell and fixedly connected with the shell, and the control panel is arranged between the heat dissipation shell and the bracket assembly.

Drawings

Fig. 1 is a perspective view of the streaming media rearview mirror of the present invention.

Fig. 2 is an exploded view of the streaming media rearview mirror of the present invention.

Fig. 3 is a perspective view of the display module of the present invention.

Fig. 4 is an exploded view of the display module of the present invention.

Fig. 5 is a perspective view of the heat dissipation case of the present invention.

Fig. 6 is a perspective view of the heat dissipating housing and the heat insulating plate of the present invention.

Fig. 7 is a cross-sectional view of the display module of the present invention.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Referring to fig. 1 and 2, the utility model discloses an intelligence passenger cabin streaming media rear-view mirror 200, including casing 71, speculum 72, display module assembly 100, control panel 73 and bracket subassembly 74, speculum 72 install in the front opening part of casing 71, display module assembly 100 is foretell display module assembly 100, display module assembly 100 install in casing 71 and be located speculum 72 rear side, control panel 73 install in casing 71 and with display module assembly 100 electricity is connected, bracket subassembly 74 install in the casing 71 with the support display module assembly 100 and part expose in outside the casing 71.

Referring to fig. 3 to 7, the display module 100 includes a display screen 10, a backlight module and a heat dissipation case 30, the backlight module is installed in the heat dissipation case 30, the display screen 10 is installed on the heat dissipation case 30 and is located above the backlight module, and the backlight module includes a light guide plate 21 and an LED light bar 22 installed on one side of the light guide plate 21. The display module 100 further comprises a heat insulation plate 40, the heat dissipation shell 30 comprises a bottom wall 41 and a first side wall 42, the lamp panels of the LED light bars 22 are attached and fixed to the inner surface of the first side wall 42, the heat insulation plate 40 is arranged on the bottom wall 41, and one side wall of the heat insulation plate 40 is opposite to the LED light bars 22 in interval; the light guide plate 21 is arranged on the heat insulation plate 40, and a light incident surface opposite to the LED light bar 22 in interval is formed on one side of the light guide plate 21; the heat insulation plate 40 is spaced between the light guide plate 21 and the bottom wall 41, and an insulation cavity 402 formed by spacing ribs 401 is formed between the light guide plate 21 and the bottom wall 41, and the spacing ribs 401 are supported between the light guide plate 21 and the bottom wall 41.

Referring to fig. 5, the LED light bar 22 includes a circuit board and an LED chip 221 mounted on the circuit board.

The heat insulation plate 40 is a heat-resistant plastic member, and has low heat transfer efficiency, and the rate of transferring heat is much lower than that of the heat dissipation case 30. Specifically, the heat insulation board 40 is a PC, but the heat insulation board may be other plastic pieces, and is not limited to a PC.

The control board 73 includes a PCB731 and a flexible circuit board 732 connected to the display screen 10 and controlling the display screen 10.

Referring to fig. 4, 6 and 7, the heat insulation board 40 includes a heat insulation board body 403 having two opposite sides being flat and a spacing rib 401 protruding from one side of the heat insulation board body 403 close to the heat dissipation shell 30, and the heat insulation board body 403 not only increases the strength of the heat insulation board 40, but also allows the heat transferred through the spacing rib 401 to be spaced by the heat insulation board body, thereby further reducing the heat transferred to the heat conduction plate.

Referring to fig. 4 and 7, the light guide plate 21 is provided at the rear surface thereof with a reflective layer 23, and the insulation board 40 contacts the rear surface of the reflective layer 23. The reflective layer 23 may be adhered, plated or disposed on the back of the light guide plate 21 by other methods. Specifically, the light guide plate 21 and the outer surfaces of the other side walls different from the side where the LED light bar 22 is located are also respectively provided with a reflective layer 23.

Referring to fig. 4 and 7, the backlight module further includes an optical element 24 disposed between the light guide plate 21 and the display screen 10, and the optical element 24 includes an upper light-enhancing layer, a lower light-enhancing layer, and a diffusion film sequentially disposed between the display screen 10 and the light guide plate 21 from top to bottom. Otherwise, the specific structure and positional relationship of the optical element 24 are not limited to the present embodiment.

At least two positioning protrusions 211 are convexly disposed on the upper surface of the light guide plate 21 away from the bottom wall 41, positioning holes 241 corresponding to the positioning protrusions 211 are disposed on the optical element 24, and when the optical element 24 is mounted on the light guide plate 21, the positioning protrusions 211 correspondingly penetrate through the positioning holes 241 to align the optical element 24.

Preferably, the display screen 10 through plastic frame 50 install in on the heat dissipation shell 30, plastic frame 50 is the annular and including the mount table 51 that is located the top and being located first annular lateral wall 52 of mount table 51 below, the heat dissipation shell 30 is still including the cooperation first lateral wall 42 encircles the second lateral wall 43 on diapire 41 border, first lateral wall 42 with second lateral wall 43 encloses into second annular lateral wall, the display screen 10 is fixed in on the mount table 51, first annular lateral wall 52 overlap in outside the second annular lateral wall and with second annular lateral wall block, so that plastic frame 50 with the block of heat dissipation shell 30 is connected.

Specifically, the first annular side wall 52 and the second annular side wall are provided with clamping components 53 which are clamped with each other, and the clamping components 53 limit the first annular side wall 52 and the second annular side wall in the vertical direction.

The second annular side wall is sleeved in the first annular side wall. In particular, the back of the mounting table 51 and the second annular side wall top wall have a male-female mating assembly to locate the connection of the first and second annular side walls 52, 52. The matching component is a groove arranged on the mounting table 51 and a bulge arranged on the top wall of the second annular side wall, and the groove and the bulge are in concave-convex matching for alignment. Of course, the matching components are a protrusion on the mounting platform 51 and a groove on the top wall of the second annular sidewall, and the groove and the protrusion are matched in a concave-convex manner for alignment.

Specifically, a plurality of buffer sheets 44 are disposed at intervals on the inner surface of the second sidewall 43, and the buffer sheets 44 are disposed between the sidewall of the light guide plate 21 and the second sidewall 43 to buffer and position the light guide plate 21. This scheme makes light guide plate 21 and radiating shell 30 omnidirectional interval come, avoids light guide plate 21 to contact radiating shell 30 from bottom and lateral part, further increases light guide plate 21's life. The second sidewall 43 includes a first segment opposite to the first sidewall 42, and a second segment and a third segment connected between the first sidewall 42 and the first segment, the second segment and the third segment are respectively provided with a buffer sheet 44, so as to space the light guide plate 21 and the sidewall of the heat dissipation case 30 from all other directions out of the first sidewall 42.

The buffer sheet 44 is made of a heat-resistant flexible material, such as a silicone sheet.

Wherein the buffer sheet 44 is simultaneously spaced between the sidewall of the insulation board 40 and the sidewall of the heat-radiating case 30.

Specifically, a groove 45 is formed in the inner surface of the second side wall 43 and the bottom wall 41 adjacent to the second side wall 43, the buffer sheet 44 is adhered to the bottom of the groove 45, and the depth of the groove 45 in the second side wall 43 is smaller than the thickness of the buffer sheet 44. The groove 45 not only indicates the installation position of the buffer sheet 44, but also corrects the installation angle and installation position of the buffer sheet 44 when the buffer sheet 44 is attached.

Wherein, the depth of the groove 45 on the second side wall 43 becomes gradually shallower from bottom to top. This arrangement causes the buffer sheet 44 to gradually approach the side wall of the light guide plate 21 from the lower right to the upper in the longitudinal direction.

The upper surface of mount table 51 faces the inboard of nearly hollow region inwards cave in be the step form in order to form one with display screen 10 complex mounting groove 510, display screen 10 inlay in mounting groove 510, and make the upper surface of display screen 10 with the upper surface parallel and level of mount table 51, just mounting groove 510 ring groove wall contacts completely the lateral wall of display screen 10 provides the trench of installation for display screen 10.

Preferably, the interval ribs 401 are connected in a honeycomb or grid shape.

Preferably, the heat dissipation housing 30 is an aluminum housing, and a plurality of heat dissipation ribs 31 are protruded from a lower surface thereof.

Preferably, a first supporting structure is formed between the first sidewall 42 of the heat dissipation housing 30 and the corresponding sidewall of the light guide plate 21, a second supporting structure is formed between the first sidewall 42 of the heat dissipation housing 30 and the corresponding sidewall of the heat insulation plate 40, the LED light bar 22 is arranged on the first sidewall 42 in a manner of avoiding the supporting structures, and the light guide plate 21 and the heat insulation plate 40 are arranged at intervals between the first supporting structure and the LED light bar 22 respectively.

Specifically, the first sidewall 42 is provided with a first protrusion 421 protruding toward the light guide plate 21, a second protrusion 422 protruding toward the first sidewall 42 is provided on the sidewall opposite to the first sidewall 42 on the light guide plate 21, a fourth protrusion 423 protruding toward the first sidewall 42 is provided on the sidewall opposite to the first sidewall 42 on the heat insulation plate 40, and the first protrusion 421 is respectively opposite to the sidewall of the light guide plate 21 and the sidewall of the heat insulation plate 40. In this embodiment, two first bosses 421 are respectively disposed along the longitudinal direction of the first sidewall 42, one second boss 422 and one fourth boss 423 are respectively disposed corresponding to one first boss 421, the upper half portion of the first boss 421 is abutted against the second boss 422, and the lower half portion is abutted against the fourth boss 423. The other first boss 421 abuts the heat insulating plate 40 and the sidewall of the light guide plate 21. The first boss 421 and the second boss 422 form a first support structure, and the first boss 421 and the fourth boss 423 form a second support structure.

Of course, the structures of the first and second supporting structures are not limited to this, and the bosses may be disposed only on the first sidewall 42, only on the light guide plate 21 and the heat insulating plate 40, or disposed on the first sidewall 42, the light guide plate 21, and the heat insulating plate 40, respectively. The protrusions of the first sidewall 42 may be opposite to the protrusions of the light guide plate 21 and the heat insulation plate 40, or may be staggered.

In this embodiment, the reflector 72 includes a surface glass, a bottom glass, and a first polarizer sandwiched between the surface glass and the bottom glass, the first polarizer is a linear polarizer and can filter light in a first direction, the first direction is perpendicular to a front-back direction, the display module 100 has a second polarizer and can filter light in a second direction, the second direction is perpendicular to the front-back direction, and only light in the second direction matched with the display screen 10 passes through, so that when the display screen 10 is dark, the first polarizer can be used as the reflector 72 in cooperation with a black background of the display screen 10, and when the display screen 10 is bright, the first polarizer cooperates with the second polarizer to display a normal image without providing the reflector 72 that needs to be powered, and without controlling the light transmittance of the reflector 72 and without controlling.

The bracket assembly 74 is disposed on the back of the heat dissipation housing 30 and fixedly connected to the housing 71, and the control board 73 is installed between the heat dissipation housing 30 and the bracket assembly 74.

The utility model discloses light guide plate 21 is relative with LED lamp strip 22 interval promptly, again with the heat insulating board 40 of interval between the heat dissipation shell 30, prevent that the heat from being transmitted to the lateral part and the bottom of heat insulating board 40 by LED lamp strip 22 is direct or fast. During operation, the LED light bar 22 emits light and heat, the heat is directly transmitted to the bottom wall 41 through the first side wall 42, and then is dissipated through the outer surfaces of the first side wall 42 and the bottom wall 41, and the heat transmitted to the bottom wall 41 through the heat insulation cavity 402 is reduced as much as possible and is not transmitted to the light guide plate 21 in return, which affects the light guiding performance of the light guide plate 21 and the service life of other optical elements 24 at the light guide plate 21. Furthermore, when the display module 100 is used in the streaming media rearview mirror 200, the control board 73 of the streaming media rearview mirror 200 is usually disposed on the outer surface of the heat dissipation casing 30, and the heat insulation board 40 prevents the heat of the control board 73 from being transmitted to the light guide plate 21 via the heat dissipation casing 30 to affect the light emitting effect and the service life of the backlight module of the display module 100.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention, so that the present invention will not be limited by the accompanying claims.

Claims (10)

1. The utility model provides a display module assembly, includes display screen, backlight module and heat dissipation shell, backlight module install in the heat dissipation shell, the display screen install in on the heat dissipation shell and be located the backlight module top, backlight module include the light guide plate with install in the LED lamp strip of light guide plate one side, its characterized in that: the LED lamp strip heat dissipation structure comprises a heat dissipation shell and a heat insulation plate, wherein the heat dissipation shell comprises a bottom wall and a first side wall, a lamp panel of the LED lamp strip is attached and fixed to the inner surface of the first side wall, the heat insulation plate is arranged on the bottom wall, and one side wall of the heat insulation plate is opposite to the interval of the LED lamp strip; the light guide plate is arranged on the heat insulation plate, and one side of the light guide plate is provided with a light incident surface opposite to the distance between the LED light bars; the heat insulation plate is arranged between the light guide plate and the bottom wall at intervals, a heat insulation cavity formed by interval raised lines at intervals is formed between the light guide plate and the bottom wall, and the interval raised lines are supported between the light guide plate and the bottom wall.

2. The display module of claim 1, wherein: the heat insulation plate is a heat-resistant plastic part; the heat insulation plate comprises a heat insulation body with two opposite side surfaces being planes and spaced convex strips convexly arranged on one side surface of the heat insulation body close to the heat dissipation shell; the backlight module comprises a light guide plate, a heat insulation plate, a backlight module and a diffusion film, wherein the back of the light guide plate is provided with a reflecting layer, the heat insulation plate is contacted with the back of the reflecting layer, the backlight module also comprises an optical element arranged between the light guide plate and the display screen, and the optical element comprises an upper light-adding layer, a lower light-adding layer and the diffusion film which are sequentially arranged between the display screen and the light guide plate from top to bottom; the interval sand grip is connected and is cellular or latticed, the heat dissipation shell is the aluminum hull and its lower surface protruding is equipped with a plurality of heat dissipation sand grips.

3. The display module of claim 1, wherein: the backlight module further comprises an optical element arranged between the light guide plate and the display screen, at least two positioning bulges are convexly arranged on the upper surface of the light guide plate far away from the bottom wall, positioning holes corresponding to the positioning bulges are arranged on the optical element, and when the optical element is arranged on the light guide plate, the positioning bulges correspondingly penetrate through the positioning holes to align the optical element.

4. The display module of claim 1, wherein: the display screen is installed on the heat dissipation shell through a plastic frame, the plastic frame is annular and comprises an installation platform located at the top and a first annular side wall located below the installation platform, the heat dissipation shell further comprises a second side wall matched with the first side wall to surround the peripheral edge of the bottom wall, the first side wall and the second side wall form a second annular side wall in a surrounding mode, the display screen is fixed on the installation platform, and the first annular side wall is sleeved outside the second annular side wall and clamped with the second annular side wall so that the plastic frame and the heat dissipation shell are connected in a clamping mode; the first annular side wall and the second annular side wall are provided with clamping components which are clamped with each other, and the clamping components limit the first annular side wall and the second annular side wall in the vertical direction; the bottom wall of the first annular side wall and the top wall of the second annular side wall are provided with matching components which are matched in a concave-convex mode so as to position the connection of the first annular side wall and the second annular side wall; the upper surface of mount table face nearly hollow region inboard inwards cave in be step form in order to form one with display screen complex mounting groove, the display screen inlay in the mounting groove, and make the upper surface of display screen with the upper surface parallel and level of mount table, just mounting groove annular cell wall contacts completely the lateral wall of display screen.

5. The display module of claim 1, wherein: the heat dissipation shell is still including the cooperation first lateral wall encircles the second lateral wall of diapire border, first lateral wall with the second lateral wall encloses second annular lateral wall, the interval is provided with a plurality of buffers on the internal surface of second lateral wall, the buffer is located the lateral wall of light guide plate with between the second lateral wall, it is right with the light guide plate cushions the location.

6. The display module of claim 5, wherein: the internal surface of second lateral wall with the diapire is close to second lateral wall department is equipped with the recess, the buffer patch paste in the recess tank bottom, the depth of recess of second lateral wall department is less than the thickness of buffer patch, the depth of recess on the second lateral wall is by lower supreme becoming shallow gradually.

7. The display module of claim 1, wherein: a first supporting structure is formed between the first side wall of the heat dissipation shell and the corresponding side wall of the light guide plate, a second supporting structure is formed between the first side wall of the heat dissipation shell and the corresponding side wall of the heat insulation plate, the LED light bars are avoided, the supporting structures are installed on the first side wall, and the light guide plate and the heat insulation plate are arranged at intervals of the first supporting structure and the second supporting structure and the LED light bars respectively.

8. The display module of claim 7, wherein: the first support structure comprises a first boss protruding towards the light guide plate along the first side wall and/or a second boss protruding towards the first side wall along the corresponding side wall of the light guide plate, and the first boss and the second boss are oppositely abutted or staggered; the second supporting structure comprises a third boss protruding towards the heat insulation plate along the first side wall and/or a fourth boss protruding towards the first side wall along the corresponding side wall of the heat insulation plate, and the third boss and the fourth boss are arranged oppositely or in a staggered manner; the first boss and the second boss may be the same boss or different bosses.

9. An intelligent passenger cabin streaming media rearview mirror is characterized in that: the display module comprises a shell, a reflector, a display module, a control panel and a bracket component, wherein the reflector is arranged at the front opening of the shell, the display module is the display module according to any one of claims 1-8, the display module is arranged in the shell and positioned at the rear side of the reflector, the control panel is arranged in the shell and electrically connected with the display module, and the bracket component is arranged in the shell to support the display module and partially exposed outside the shell.

10. The intelligent cabin streaming media rearview mirror of claim 9, wherein: the reflecting mirror comprises surface glass, bottom glass and a first polaroid sandwiched between the surface glass and the bottom glass, wherein the first polaroid is a linear polaroid and can filter light in a first direction, the first direction is vertical relative to the front-back direction, the display module is provided with a second polaroid and can filter light in a second direction, and the second direction is vertical to the front-back direction.

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