Vehicle-mounted backlight lower frame structure and vehicle-mounted backlight source

Abstract

The application discloses a vehicle-mounted backlight lower frame structure and a vehicle-mounted backlight source, and particularly relates to the technical field of vehicle-mounted backlight, which comprises a lower frame plate, a heat dissipation cavity is formed in the lower frame plate, a mesh plate is slidably arranged in the heat dissipation cavity, a heat dissipation assembly is arranged at the bottom of the mesh plate, and the heat dissipation assembly comprises four fireplace air blowers. The micro motor drives the threaded rod to drive the mesh plate to move up and down, and the mesh plate extrudes the fireplace air blowers when moving down, and meanwhile, four sealing plates move down together with the mesh plate to block the multiple air inlets, so that the gas in the fireplace air blowers is discharged from the air outlet through the air nozzle, the air inlet and the communication hole, and is discharged from the heat exhaust pipe after absorbing the heat in the heat dissipation cavity. When the mesh plate and the sealing plate move up, the fireplace air blowers are driven together, the fireplace air blowers re-inhale and become larger, compared with the prior art, the mesh plate is repeatedly driven to move up and down, the circulation of the air in the heat dissipation cavity can be realized, and the heat dissipation speed is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle-mounted backlight, more particularly to a vehicle-mounted backlight lower frame structure and a vehicle-mounted backlight source. BACKGROUND

[0002] In the electronic industry, backlight is a form of illumination, often used on LCD displays, backlights and frontlights differ in that backlights are illuminated from the side or from the back, while frontlights, as the name suggests, are illuminated from the front, they are used to increase the level of illumination in low light environments and the brightness of computer monitors and liquid crystal screens, to produce light in a similar way to CRT displays, among which the backlight source applied to the automotive center console is a vehicle-mounted backlight source.

[0003] When the vehicle-mounted backlight source is installed on the automotive center console, it needs to be fixed using a lower frame structure. For example, the prior art disclosed in CN114236906A, a vehicle-mounted backlight lower frame structure and a vehicle-mounted backlight source, the prior art includes a backlight lower frame, the top surface of the backlight lower frame is provided with a backlight upper frame, the inner surface of the backlight lower frame is movably sleeved with a light guide plate, the light guide plate and the backlight upper frame are provided with a sealing gasket, and the top surface of the light guide plate is bonded with a polarizing film.

[0004] However, the above-mentioned prior art has the following problems when in use: the energized magnetic plate is energized to adsorb the sealing block, and the control wall furnace blower exhaust, since the wall furnace blower is only provided with a small ring, the amount of gas sprayed is small, so the heat dissipation effect of the backlight source is low, and the magnetic force generated by the energized magnetic plate will affect the use of the electronic instruments in the automobile. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the present application provides a vehicle-mounted backlight lower frame structure and a vehicle-mounted backlight source, which drives the mesh plate to move up and down by a micro motor driving screw rod, when the mesh plate moves down, it extrudes the wall furnace blower, at the same time, four sealing plates move down with the mesh plate to block the multiple air inlets, so that the gas in the wall furnace blower is discharged from the air outlet through the air nozzle, the air inlet and the communication hole, and then discharged from the heat exhaust pipe after absorbing the heat in the heat dissipation cavity, when the mesh plate and the sealing plate move up, the wall furnace blower is driven together, the wall furnace blower reabsorbs air and becomes larger, compared with the prior art, repeatedly driving the mesh plate to move up and down can realize the circulation of air in the heat dissipation cavity, and thus greatly improve the heat dissipation speed, so as to solve the problems in the above-mentioned background art.

[0006] In order to achieve the above object, the present application provides the following technical scheme: The vehicle-mounted backlight lower frame structure comprises a lower frame plate, a heat dissipation cavity is formed in the lower frame plate, a mesh plate is slidably arranged in the heat dissipation cavity, a heat dissipation assembly is arranged at the bottom of the mesh plate, the heat dissipation assembly comprises four fireplace blowers, the four fireplaces blowers are arranged between the bottom of the mesh plate and the heat dissipation cavity, the bottom of each fireplace blower is fixed to the bottom of the heat dissipation cavity, a gas nozzle is fixedly connected to one side of each fireplace blower, three air inlets are formed around the outer wall of the lower frame plate, a plurality of gas nozzles are fixed in the air inlets, an air outlet is formed in the inner wall of the bottom of the heat dissipation cavity, the air outlet is connected to the air inlets through a plurality of communication holes, a heat exhaust pipe is fixedly connected to the outer wall of the front and rear sides of the lower frame plate, a sliding groove is formed in the inner wall of the heat dissipation cavity, the mesh plate is slidably arranged in the sliding groove, four sealing plates are fixedly arranged at the bottom of the mesh plate, an insertion slot matched with the sealing plate is formed at the bottom of each air inlet, a lifting assembly is arranged on both sides of the mesh plate, and the lifting assembly is used to drive the mesh plate to move up and down.

[0007] When the four sealing plates move downward together with the mesh plate, the air inlets are blocked, the gas in the fireplace blower is discharged to the air inlets and the communication holes through the gas nozzle, and then is discharged from the air outlet, so that the heat in the heat dissipation cavity is absorbed, and finally is discharged from the heat exhaust pipe; when the mesh plate moves upward, the sealing plates are moved out of the air inlets, the fireplace blower inhales air again and becomes larger.

[0008] In a preferred embodiment, each lifting assembly comprises a threaded rod, threaded holes are formed in both sides of the mesh plate, two threaded rods are respectively inserted through the threaded holes and are threadedly connected with the threaded holes, the threaded rod and the threaded hole are matched to facilitate the adjustment of the height of the mesh plate, and the mesh plate is very convenient to use.

[0009] In a preferred embodiment, installation grooves are formed in the inner walls of the top of both sides of the sliding groove, a micro motor is fixedly arranged in each installation groove, specifically, the micro motor rotates under the action of the magnetic field through the energized coil to drive the starter rotor to rotate, the small gear on the rotor drives the engine flywheel to rotate, the micro motor is used as a power source, manual operation is not required, and the micro motor is very time-saving and labor-saving to use, the output shafts of the two micro motors are inserted through the lower frame plate and are fixed to the top ends of the two threaded rods, ventilation holes are formed in one side of each installation groove, and the ventilation holes extend to the surface of the lower frame plate at one end, the heat generated by the operation of the micro motor is discharged through the ventilation holes, and the micro motor can play a role in heat dissipation and cooling.

[0010] In a preferred embodiment, a dust screen is fixedly arranged in each air inlet, each ventilation hole and each heat exhaust pipe, which is used to filter the dust and impurities in the external air, avoids the air inlets, the ventilation holes and the heat exhaust pipes from being blocked by the dust and impurities, and also prevents the dust and impurities in the external air from floating into the heat dissipation cavity to affect the heat dissipation effect.

[0011] In a preferred embodiment, the lower frame plate is provided with a groove at the top, and an upper frame plate is arranged in the groove, and the upper frame plate and the lower frame plate are fixed by a plurality of bolts, facilitating the installation and removal of the upper frame plate, and the glass plate is fixedly arranged in the upper frame plate, and is used for the transmission of light source, and the glass plate can also be used for limiting the LED plate, the light guide plate, the diffusion plate and the light collecting sheet.

[0012] In a preferred embodiment, the lower frame plate is provided with a groove at the top, and an upper frame plate is arranged in the groove, and the upper frame plate and the lower frame plate are fixed by a plurality of bolts, facilitating the installation and removal of the upper frame plate, and the glass plate is fixedly arranged in the upper frame plate, and is used for the transmission of light source, and the glass plate can also be used for limiting the LED plate, the light guide plate, the diffusion plate and the light collecting sheet.

[0013] The application also includes a vehicle-mounted backlight source installed in the vehicle-mounted backlight lower frame structure, comprising a mounting frame, the mounting frame is sequentially provided with an LED plate, a light guide plate, a diffusion plate and a light collecting sheet from bottom to top, the light collecting sheet is pasted with a brightness enhancement film at the top, the brightness enhancement film is in contact with the glass plate at the top, and the glass plate is used for limiting the LED plate, the light guide plate, the diffusion plate and the light collecting sheet.

[0014] In a preferred embodiment, the mounting box is made of metal aluminum, and a plurality of round holes are arranged on the bottom of the mounting box, facilitating the flow of gas in the heat dissipation cavity and improving the heat dissipation effect of the LED plate, the light guide plate, the diffusion plate and the light collecting sheet.

[0015] In a preferred embodiment, the mounting box is made of metal aluminum, and a plurality of round holes are arranged on the bottom of the mounting box, facilitating the flow of gas in the heat dissipation cavity and improving the heat dissipation effect of the LED plate, the light guide plate, the diffusion plate and the light collecting sheet.

[0016] The technical effects and advantages of the application are as follows:

[0017] 1. The micro motor drives the threaded rod to move the screen plate up and down, and when the screen plate moves down, it presses the fireplace blower, and at the same time, the four sealing plates move down together with the screen plate to block the multiple air inlets, so that the gas in the fireplace blower is discharged from the air outlet through the air nozzle, the air inlet and the communication hole, and after absorbing the heat in the heat dissipation cavity, it is discharged from the heat exhaust pipe, and when the screen plate and the sealing plate move up, the fireplace blower is driven together, and the fireplace blower reabsorbs air and becomes larger, compared with the prior art, the screen plate is repeatedly driven to move up and down, which can realize the circulation of air in the heat dissipation cavity, and further greatly improve the heat dissipation speed.

[0018] 2, through the installation box support installation frame, with the net plate installation box from the lower frame plate out, can take out the installation frame and disassembly and replacement of LED board, light guide plate, diffusion plate and light collecting piece, reinstallation LED board, light guide plate, diffusion plate and light collecting piece, only need to insert the installation frame into the installation box, using the glass plate in the upper frame plate and the brightness enhancement film on the light collecting piece contact, fixed LED board, light guide plate, diffusion plate and light collecting piece, simple structure, save the complex installation steps. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic diagram of the present application;

[0020] Figure 2 It is the installation box and lower frame plate structure diagram of the present application;

[0021] Figure 3 It is the lower frame plate section view of the present application;

[0022] Figure 4 It is the lower frame plate bottom view of the present application;

[0023] Figure 5 It is the lower frame plate section view of the present application;

[0024] Figure 6 It is the A part enlarged view of the present application; Figure 4

[0025] Figure 7 It is the lower frame plate bottom view of the present application;

[0026] Figure 8 It is the lower frame plate bottom plan view of the present application;

[0027] Figure 9 It is the installation frame and installation box structure diagram of the present application.

[0028] The figure mark is: 1, lower frame plate;2, heat dissipation cavity;3, net plate;4, heat dissipation assembly;5, lifting assembly;6, dustproof net;7, recess;8, upper frame plate;9, glass plate;10, installation plate;11, installation hole;12, metal heat conduction plate;13, installation frame;14, LED board;15, light guide plate;16, diffusion plate;17, light collecting piece;18, brightness enhancement film;19, installation box;20, limiting block;21, limiting groove;

[0029] 401, fireplace blower;402, air nozzle;403, air inlet;404, air outlet;405, communication hole;406, heat exhaust pipe;407, sliding groove;408, sealing plate;409, insertion slot;

[0030] 501, threaded rod;502, threaded hole;503, installation slot;504, micro motor;505, ventilation hole.​ DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0032] With reference to the drawings in the description Figures 1-9 The present application provides a vehicle-mounted backlight lower frame structure, which comprises a lower frame plate 1, a heat dissipation cavity 2 is formed in the inside of the lower frame plate 1, a mesh plate 3 is slidably arranged in the inside of the heat dissipation cavity 2, a heat dissipation assembly 4 is arranged at the bottom of the mesh plate 3, the heat dissipation assembly 4 comprises four fireplace air blowers 401, each of the four fireplace air blowers 401 is arranged between the bottom of the mesh plate 3 and the heat dissipation cavity 2, and the bottom of each of the four fireplace air blowers 401 is fixed to the bottom of the heat dissipation cavity 2, an air nozzle 402 is fixedly and communicatively arranged at one side of each of the four fireplace air blowers 401, three air inlets 403 are formed around the outer wall of the lower frame plate 1, a plurality of air nozzles 402 are fixedly arranged in the plurality of air inlets 403, an air outlet 404 is formed in the inner wall of the bottom of the heat dissipation cavity 2, the air outlet 404 is in communication with the plurality of air inlets 403 through a plurality of communication holes 405, a heat exhaust pipe 406 is fixedly and communicatively arranged at the outer wall of the front and rear sides of the lower frame plate 1, a sliding groove 407 is formed in the inner wall of the heat dissipation cavity 2, the mesh plate 3 is slidably arranged in the sliding groove 407, four sealing plates 408 are fixedly arranged at the bottom of the mesh plate 3, an insertion slot 409 matched with the sealing plate 408 is formed in the bottom of each of the air inlets 403, a lifting assembly 5 is arranged at each of the two sides of the mesh plate 3, and the lifting assembly 5 is used to drive the mesh plate 3 to move up and down.

[0033] Each of the lifting assemblies 5 comprises a threaded rod 501, threaded holes 502 are formed in the two sides of the mesh plate 3, two threaded rods 501 pass through the two threaded holes 502 and are threadedly connected with the threaded holes 502, and the height of the mesh plate 3 is adjusted, installation grooves 503 are formed in the top inner walls of the two sides of the sliding groove 407, a micro motor 504 is fixedly arranged in each of the two installation grooves 503, specifically, the micro motor 504 rotates under the force of the magnetic field through the energized coil to drive the starter rotor to rotate, the small gear on the rotor drives the engine flywheel to rotate, the micro motor 504 is used as a power source, manual operation is not needed, and it is very time-saving and labor-saving to use, the output shafts of the two micro motors 504 pass through the lower frame plate 1 and are fixed to the top ends of the two threaded rods 501, ventilation holes 505 are formed in one side of each of the two installation grooves 503, one end of each of the two ventilation holes 505 extends to the surface of the lower frame plate 1, and the micro motor 504 is cooled through the ventilation holes 505.

[0034] By setting a mesh plate 3 inside the lower frame plate 1, two micro motors 504 drive two threaded rods 501 to rotate, thereby driving the mesh plate 3 to move up and down. When the mesh plate 3 moves down, it squeezes the fireplace blower 401. At the same time, four sealing plates 408 move down with the mesh plate 3 to block multiple air inlets 403. The gas in the fireplace blower 401 is discharged through the air nozzle 402 into the air inlet 403 and the connecting hole 405, and finally discharged from the air outlet 404, absorbing the heat in the heat dissipation cavity 2, and then discharged from the heat exhaust pipe 406, thereby increasing the heat dissipation speed in the heat dissipation cavity 2. When the mesh plate 3 moves up, it drives the fireplace blower 401 together. At the same time, the sealing plates 408 move out of the air inlet 403, causing the fireplace blower 401 to re-inhale and become larger. This repeatedly drives the mesh plate 3 to move up and down, thereby realizing the air circulation in the heat dissipation cavity 2 and greatly accelerating the heat dissipation.

[0035] Refer to the instruction manual appendix Figure 1 , 2 3, 4 and 7, each air inlet 403, each ventilation hole 505 and each heat exhaust pipe 406 is fixedly equipped with a dustproof net 6. The dustproof net 6 is used to filter dust and impurities in the outside air and prevent dust and impurities in the outside air from drifting into the heat dissipation cavity 2 and affecting the heat dissipation effect.

[0036] By installing a dustproof net 6 inside each air inlet 403, each ventilation hole 505 and each heat exhaust pipe 406, the dustproof net 6 can block dust and impurities in the outside air, thereby keeping the heat dissipation cavity 2 clean. The heat exhaust pipe 406 is used to exhaust the hot air to a place away from the lower frame plate 1, so as to avoid the hot air heating the temperature around the lower frame plate 1 and affecting the heat dissipation effect.

[0037] Refer to the instruction manual appendix Figure 1 , 2 3, 4, 5 and 9, the present invention provides an automotive backlight installed in the lower frame structure of an automotive backlight, including a mounting bracket 13. The mounting bracket 13 is provided with an LED plate 14, a light guide plate 15, a diffuser plate 16 and a light collector 17 arranged sequentially from bottom to top. A brightness enhancement film 18 is attached to the top of the light collector 17. The top of the brightness enhancement film 18 contacts the bottom of a glass plate 9. The glass plate 9 is used to limit the brightness enhancement film 18 above it to fix the LED plate 14, the light guide plate 15, the diffuser plate 16 and the light collector 17.

[0038] And the lower frame plate 1 top is provided with a groove 7, the groove 7 is equipped with upper frame plate 8, the upper frame plate 8 is fixed between the lower frame plate 1 by a plurality of bolts, it is convenient to install and dismount the upper frame plate 8, the upper frame plate 8 inside fixedly embedded with glass plate 9, it is convenient for light source to emit, the lower frame plate 1 bottom front and rear sides are both fixedly provided with mounting plate 10, two mounting plate 10 top sides are both provided with mounting hole 11, the lower frame plate 1 bottom fixedly embedded with a plurality of metal heat-conducting plates 12, a plurality of metal heat-conducting plates 12 top all extend to the heat dissipation cavity 2, use a plurality of metal heat-conducting plates 12 to transmit the heat in the heat dissipation cavity 2 to the lower frame plate 1 outside, for further improve the heat dissipation effect in the heat dissipation cavity 2;

[0039] And the mesh plate 3 top is provided with mounting box 19, the mounting bracket 13 is inserted in the mounting box 19, the mounting box 19 both sides outer wall are both fixedly provided with limiting block 20, the lower frame plate 1 both sides inner wall are both provided with limiting slot 21, two limiting blocks 20 are respectively slidably arranged in two limiting slots 21, for supporting mounting box 19, the mounting box 19 is made of metal aluminum, the mounting box 19 bottom is provided with a plurality of round holes, it is convenient for the flow of gas in the heat dissipation cavity 2, improves the heat dissipation effect of LED board 14, light guide plate 15, diffusion plate 16 and light collecting sheet 17.

[0040] Using mounting bracket 13, LED board 14, light guide plate 15, diffusion plate 16 and light collecting sheet 17 are stacked together from bottom to top, and mounting box 19 is used to support mounting bracket 13, two micro motors 504 are used to drive screw rod 501 to rotate, and mounting box 19 is pushed out from the lower frame plate 1 by the mesh plate 3, then mounting bracket 13 can be taken out and LED board 14, light guide plate 15, diffusion plate 16 and light collecting sheet 17 can be disassembled and replaced, the structure is simple, and mounting and dismounting is very convenient, when reinstalling LED board 14, light guide plate 15, diffusion plate 16 and light collecting sheet 17, mounting bracket 13 is inserted into mounting box 19, and then upper frame plate 8 is installed, glass plate 9 in upper frame plate 8 contacts brightening film 18 on light collecting sheet 17, and LED board 14, light guide plate 15, diffusion plate 16 and light collecting sheet 17 are fixed, without using mounting structure to fix LED board 14, light guide plate 15, diffusion plate 16 and light collecting sheet 17, and complex installation steps are saved.

[0041] Finally: the above only for the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. Vehicle backlight lower frame structure, comprising a lower frame plate (1), characterized in that: The lower frame plate (1) is internally provided with a heat dissipation cavity (2), and the heat dissipation cavity (2) is internally slidably provided with a mesh plate (3), and the mesh plate (3) is provided with a heat dissipation assembly (4) at the bottom. The heat dissipation assembly (4) comprises four fireplace blowers (401), the four fireplace blowers (401) are all arranged between the bottom of the mesh plate (3) and the heat dissipation cavity (2), the bottoms of the four fireplace blowers (401) are fixed to the bottom of the heat dissipation cavity (2), one side of each of the four fireplace blowers (401) is fixedly and communicatively provided with an air nozzle (402), the outer wall of the lower frame plate (1) is provided with three air inlets (403) around, the plurality of air nozzles (402) are fixed in the plurality of air inlets (403) respectively, the bottom inner wall of the heat dissipation cavity (2) is provided with an air outlet (404), the air outlet (404) is in communication with the plurality of air inlets (403) through a plurality of communication holes (405), and the outer wall of the lower frame plate (1) is fixedly and communicatively provided with a heat exhaust pipe (406) at the front and back sides. The inner wall of the heat dissipation cavity (2) is provided with a sliding groove (407), the mesh plate (3) is slidably arranged in the sliding groove (407), the bottom of the mesh plate (3) is fixedly provided with four sealing plates (408), the bottom of each air inlet (403) is provided with a slot (409) matched with the sealing plate (408), and the two sides of the mesh plate (3) are provided with lifting assemblies (5) for driving the mesh plate (3) to move up and down. When the four sealing plates (408) move downward together with the mesh plate (3), the plurality of air inlets (403) are blocked, the gas in the fireplace blower (401) is discharged into the air inlets (403) and the communication holes (405) through the air nozzles (402), and is finally discharged from the heat exhaust pipe (406), the mesh plate (3) moves upward to drive the fireplace blower (401) to move together, the sealing plate (408) is moved out of the air inlet (403), and the fireplace blower (401) reabsorbs air to become large.

2. The in-vehicle backlight lower frame structure according to claim 1, characterized by: Each lifting assembly (5) comprises a threaded rod (501), the two sides of the mesh plate (3) are provided with threaded holes (502), and the two threaded rods (501) respectively penetrate through the two threaded holes (502) and are in threaded connection with the threaded holes (502) for adjusting the height of the mesh plate (3).

3. The in-vehicle backlight lower frame structure according to claim 2, characterized by: The inner wall of the sliding groove (407) is provided with a mounting groove (503) at the top of the two sides, a micro motor (504) is fixedly arranged in each of the two mounting grooves (503), the output shafts of the two micro motors (504) penetrate through the lower frame plate (1) and are fixed to the top ends of the two threaded rods (501), and the two mounting grooves (503) are provided with ventilation holes (505) at one side, and one end of each of the two ventilation holes (505) extends to the surface of the lower frame plate (1) for heat dissipation of the micro motor (504).

4. The in-vehicle backlight lower frame structure according to claim 3, characterized by: A dust screen (6) is fixedly arranged in each of the air inlets (403), each of the ventilation holes (505) and each of the heat exhaust pipes (406) for filtering dust and impurities in the external air.

5. The in-vehicle backlight lower frame structure according to claim 1, characterized by: The lower frame plate (1) is provided with a recess (7) on the top, the recess (7) is provided with an upper frame plate (8), the upper frame plate (8) and the lower frame plate (1) are fixed by a plurality of bolts, the upper frame plate (8) is convenient to install and disassemble, and the glass plate (9) is fixedly embedded in the inside of the upper frame plate (8).

6. The in-vehicle backlight lower frame structure according to claim 1, characterized by: The lower frame plate (1) is provided with a mounting plate (10) on the bottom of the front and rear sides, the top of the two mounting plates (10) is provided with a mounting hole (11) on the two sides, the bottom of the lower frame plate (1) is fixedly embedded with a plurality of metal heat-conducting plates (12), and the top of the plurality of metal heat-conducting plates (12) extends into the heat dissipation cavity (2).

7. A vehicle-mounted backlight installed in the vehicle-mounted backlight lower frame structure according to any one of claims 1 to 6, characterized by: The mounting frame (13) is provided with an LED plate (14), a light guide plate (15), a diffusion plate (16) and a light collecting sheet (17) from bottom to top, the light collecting sheet (17) is provided with a brightness enhancement film (18) on the top, and the top of the brightness enhancement film (18) is in contact with the bottom of the glass plate (9).

8. The vehicle-mounted backlight of claim 7, wherein: The mounting box (19) is provided on the top of the mesh plate (3), the mounting frame (13) is inserted into the mounting box (19), the mounting box (19) is provided with a limiting block (20) on the two outer walls, the limiting groove (21) is formed in the inner wall of the lower frame plate (1), and the two limiting blocks (20) are respectively slidably arranged in the two limiting grooves (21) and used for supporting the mounting box (19).

9. The vehicle-mounted backlight of claim 8, wherein: The mounting box (19) is made of metal aluminum, and a plurality of round holes are formed in the bottom of the mounting box (19) and used for conducting heat.

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