CN220730534U

CN220730534U - Novel HUD structure

Info

Publication number: CN220730534U
Application number: CN202322413097.6U
Authority: CN
Inventors: 任战磊; 张震宇; 李嘉文; 王波; 刘鹏
Original assignee: Foryou Multimedia Electronics Co Ltd
Current assignee: Foryou Multimedia Electronics Co Ltd
Priority date: 2023-09-06
Filing date: 2023-09-06
Publication date: 2024-04-05
Anticipated expiration: 2033-09-06

Abstract

The utility model relates to a novel HUD structure, which comprises an upper cover and a base, wherein a heat dissipation part is connected below the base, a HUD shell is arranged between the upper cover and the base, a light inlet is arranged on the HUD shell, one side close to the light inlet is fixedly connected with a primary mirror, and one side far away from the light inlet is connected with a secondary mirror, wherein convex shafts are arranged at two ends of the secondary mirror, positioning grooves are arranged at corresponding positions of the HUD shell and the convex shafts, and the convex shafts are limited in the positioning grooves through elastic sheets. According to the utility model, the primary mirror is fixedly arranged on the HUD shell, the convex shaft of the secondary mirror is matched with the groove on the HUD shell and limited by the elastic sheet, and the mirror surface is installed without arranging a bracket and a mirror seat, so that the product structure is simplified, and the cost is reduced.

Description

Novel HUD structure

Technical Field

The utility model relates to a head-up display system in the field of automobile electronics, in particular to a novel HUD structure.

Background

With the increasing maturity of HUD (head up display), the price is also continuously reduced, and it is more and more important to design a low-cost product scheme on the premise of ensuring performance for products designed by users to have competitive power in the market. The number of product parts in the current market is more, the product structure is complex, and the cost is generally higher.

Disclosure of Invention

The utility model provides a novel HUD structure, which has the advantages of fewer parts, relatively simple structure and capability of greatly reducing cost.

In order to achieve the above object, the following technical solutions are adopted.

The utility model discloses a novel HUD structure, which comprises an upper cover and a base, wherein a heat dissipation part is connected below the base, a HUD shell is arranged between the upper cover and the base, a light inlet is arranged on the HUD shell, one side close to the light inlet is fixedly connected with a primary mirror, one side far away from the light inlet is connected with a secondary mirror, two ends of the secondary mirror are provided with convex shafts, positioning grooves are formed in positions, corresponding to the HUD shell and the convex shafts, of the HUD shell, and the convex shafts are limited in the positioning grooves through elastic sheets.

In the above technical scheme, the upper cover lid closes in the base top, the radiating part of base below can dispel the heat to the inside optical element of base, the HUD casing is located between upper cover and the base, the HUD casing is as an important place and the base separation setting of mirror reflection, has optimized the space of light path, guarantees normal propagation between the light path, be equipped with the inlet that supplies the light path to get into on the HUD casing, the one-level mirror of inlet side direct mount is on the HUD casing, one-level mirror accessible is glued or other mode is installed, the constant head tank has spacing and locate function, the protruding axle of secondary mirror is placed in the constant head tank and is fixed a position to make protruding axle obtain further spacing and can't break away from on the HUD casing on the constant head tank through the shell fragment lock, each stop wall on the constant head tank satisfies the benchmark location of secondary mirror, and finally through the shell fragment further spacing, need not set up support or mirror seat to install the optical mirror, has simplified product structure, and the cost is reduced simultaneously more portably.

Further, the elastic pieces are fixedly connected to two sides of the end face of the positioning groove, and elastic downward-pressing shifting pieces are arranged at positions, corresponding to the convex shafts, of the elastic pieces.

In the above technical scheme, the shell fragment is fixed in constant head tank open-ended terminal surface position, and spacing protruding axle can't break away from the open end of constant head tank, push down the plectrum and have elasticity, have the effect of fastening to protruding axle.

Further, an elastic limit structure is arranged at the corresponding position of the upper cover, which is positioned on the lower pressing shifting piece.

In the above technical scheme, the setting of elasticity limit structure can prevent that the protruding axle of second grade mirror from taking place to rotate in the constant head tank and producing great mechanical shock, and then causes the shell fragment to warp too much, unable recovery, has the effect of protection and fastening to the shell fragment.

Further, one end of the secondary mirror is provided with a driving arm capable of passing through the HUD shell, and the driving arm is connected with a driving assembly arranged on the base.

In the above technical scheme, drive assembly locates on the base, HUD casing is equipped with the hole that supplies the actuating arm of second grade mirror to pass through, the actuating arm passes through the hole and is connected with drive assembly, drives the second grade mirror through drive assembly's drive and takes place to rotate, can adjust the correlation angle between second grade mirror and the one-level mirror, and then reaches the best light-emitting effect.

Further, the end part of the driving arm of the secondary mirror is provided with a convex tooth structure, and the convex tooth structure is in meshed connection with the driving shaft of the driving assembly.

In the above technical scheme, the tip of actuating arm is equipped with the dogtooth, drive assembly still includes the driving piece, the drive end of driving piece is connected with a drive shaft, the drive shaft is for being equipped with the lead screw structure with the dogtooth flank engagement of actuating arm, the drive shaft rotates and then drives the actuating arm and take place to swing along with the driving piece, and then drives the secondary mirror and take place to rotate, when the driving piece is static, driving piece, drive shaft and actuating arm are in the auto-lock state, the unable rotation that takes place for the secondary mirror.

Further, the peripheral sides of the upper cover and the inside of the base are provided with light blocking walls.

In the above technical scheme, the upper cover and the base are arranged on the periphery of the primary mirror and the secondary mirror, and the light blocking wall can effectively eliminate stray light generated between specular reflection, and meanwhile, the use of the light blocking piece can be reduced, the number of parts is reduced, and the cost is saved.

Further, the base is also provided with a PCB circuit board and a HUD backlight assembly.

In the above-mentioned technical scheme, PCB circuit board, HUD assembly and drive assembly are all set up on the base in a poor light, and HUD assembly in a poor light locates the below of the inlet of HUD casing, HUD assembly in a poor light carries the light path in to the HUD casing through the inlet, PCB circuit board and drive piece distribute in HUD assembly week side in a poor light, PCB circuit board, HUD assembly and drive assembly and primary mirror and secondary mirror separate the setting, have reduced the risk of stray light.

Further, the base is provided with a through hole below the PCB and the HUD backlight assembly, and the heat dissipation piece is arranged on the base with the extending through hole.

In the above technical scheme, the drive piece HUD backlight assembly belongs to accurate instrument and needs to be guaranteed not to receive the temperature influence, and the work of PCB circuit board needs to be guaranteed that the temperature can not be too high, and the heat dissipation piece of complaining is installed in PCB circuit board and HUD backlight assembly below through the through-hole and dispels the heat to it, has guaranteed the precision requirement and the normal work of car new line display.

Further, be equipped with the light outlet on the upper cover, the light outlet upper cover has the dust guard, the dust guard is the dust guard that adopts PC material to make, the surface of dust guard is equipped with the VRC membrane on being equipped with the one deck.

In the above-mentioned technical scheme, the light path of car new line display shines on windshield through the light outlet, the shield lid closes in light outlet department in order to prevent that dust from getting into the upper cover and leading to inside to receive the pollution, has the guard action, improves the life of equipment, and the clean of being convenient for simultaneously, the shield is preferentially PC to tear open the material, PC material has characteristics such as transparency is high, thermal-insulated, the VRC membrane covers on the shield, has the function of polarization, and solar energy gets into inside the car new line display from the light outlet, solar energy shines on the LCD screen of HUD backlight assembly, and the long-time solar energy shines the temperature rise that can make the LCD screen, through the setting of VRC membrane, can effectively reduce solar energy's intensity, and then reduces the solar energy's intensity of direct irradiation on the LCD screen, prevents that LCD screen temperature rise from burning out the LCD screen, solves the problem that backward sunshine is with damaging optical element.

Further, the primary mirror is made of glass, and a cold light film is arranged on the primary mirror.

In the above technical scheme, solar ray energy light outlet gets into inside the car new line display and shines on the primary mirror, for preventing that the primary mirror from ageing under the long-time irradiation of sunshine, the material of primary mirror is preferably glass to through setting up the cold light membrane at the primary mirror surface, the cold light membrane can reduce the infrared ray light in the sunlight, and then reduces the infrared ray light reflection to the LCD screen on, has the guard action to the LCD screen, prevents that LCD screen temperature rise from burning out the LCD screen.

Compared with the prior art, the novel HUD structure has the following beneficial effects:

according to the novel HUD structure, the HUD shell and the base are arranged separately, the space of the light path is optimized, normal propagation between the light paths is guaranteed, the primary mirror is fixedly arranged on the HUD shell, the convex shaft of the secondary mirror is matched with the groove on the HUD shell and limited by the elastic sheet, the mirror surface is installed without arranging the support and the mirror seat, the product structure is simplified, the cost is reduced, and meanwhile, the installation is simpler and more convenient.

Drawings

FIG. 1 is a top view of a HUD housing of the present utility model;

FIG. 2 is a front triaxial view of the present utility model;

fig. 3 is an enlarged view of a portion a of fig. 1;

FIG. 4 is a bottom view of the top cover of the present utility model;

FIG. 5 is a block diagram of a secondary mirror and drive assembly of the present utility model;

fig. 6 is an enlarged view of a portion B of fig. 5;

FIG. 7 is a top view of the base of the present utility model;

fig. 8 is an exploded bottom view of a portion of the assembly of the present utility model.

Reference numerals illustrate: 1-an upper cover; 2-a base; 3-a heat sink; a 4-HUD housing; 5-a light barrier; 11-a light outlet; 12-dustproof piece; 13-an elastic limit structure; 21-a drive assembly; 211-a driving member; 212-a drive shaft; 22-HUD backlight assembly; a 221-LCD screen; 23-PCB circuit board; 24-through holes; 31-radiating fins; 41-a light inlet; 42-first order mirror; 43-secondary mirror; 431-convex axis; 432-shrapnel; 4321-pressing down the plectrum; 433-positioning groove; 434-driving arm; 4341-teeth.

Detailed Description

The novel HUD structure of the utility model will be described in further detail with reference to specific embodiments and accompanying drawings.

Referring to fig. 1 to 8, in a non-limiting embodiment of the present utility model, a novel HUD structure includes an upper cover 1 and a base 2, a heat dissipation member 3 is connected below the base 2, a HUD housing 4 is disposed between the upper cover 1 and the base 2, a light inlet 41 is disposed on the HUD housing 4, a primary mirror 42 is fixedly connected to a side close to the light inlet 41, and a secondary mirror 43 is connected to a side far from the light inlet 41, wherein protruding shafts 431 are disposed at two ends of the secondary mirror 43, positioning grooves 433 are disposed at corresponding positions of the HUD housing 4 and the protruding shafts 431, and the protruding shafts 431 are limited in the positioning grooves 433 through elastic sheets 432. In the above technical scheme, upper cover 1 lid closes in base 2 top, the radiating part 3 of base 2 below can dispel the heat to the inside optical element of base 2, HUD casing 4 is located between upper cover 1 and the base 2, HUD casing 4 is as an important place and the base 2 of specular reflection separately setting up, has optimized the space of light path, guarantees the normal propagation between the light path, be equipped with the inlet 41 that supplies the light path to get into on the HUD casing 4, the primary mirror 42 of inlet 41 side is direct to be installed on HUD casing 4, primary mirror 42 accessible sticky or other mode is installed, the constant head tank 433 has spacing and locate function, the protruding axle 431 of secondary mirror 43 is placed in the constant head tank 433 and is fixed a position to make protruding axle 431 obtain further spacing and can't break away from on the HUD casing 4 through the shell fragment 432 lock on the constant head tank 433, each stop wall on the constant head tank 433 satisfies the benchmark location of secondary mirror 43, and finally through 432 further spacing, need not to set up the optical support or install the shell fragment, has reduced the cost more simply simultaneously.

Referring to fig. 1 to 8, in a non-limiting embodiment of the utility model, the elastic pieces 432 are fixedly connected to two sides of the end surface of the positioning slot 433, and elastic pressing-down paddles 4321 are disposed at positions of the elastic pieces 432 corresponding to the protruding shaft 431. In the above technical solution, the elastic piece 432 is fixed at the open end of the positioning slot 433, the limiting protruding shaft 431 cannot be separated from the open end of the positioning slot 433, and the pressing-down pulling piece 4321 has elasticity and has a fastening function on the protruding shaft 431.

Referring to fig. 1 to 8, in a non-limiting embodiment of the present utility model, an elastic limiting structure 13 is disposed at a corresponding position of the upper cover 1 corresponding to the pressing tab 4321. In the above technical solution, the arrangement of the elastic limiting structure 13 can prevent the protruding shaft 431 of the secondary mirror 43 from rotating in the positioning groove 433 to generate larger mechanical impact, so that the elastic sheet 432 deforms too much and cannot recover, and the elastic sheet 432 is protected and fastened.

Referring to fig. 1 to 8, in a non-limiting embodiment of the present utility model, one end of the secondary mirror 43 is provided with a driving arm 434 that can pass through the HUD housing 4, and the driving arm 434 is connected to a driving assembly 21 provided on the base 2. In the above technical scheme, the driving assembly 21 is disposed on the base 2, the HUD housing 4 is provided with a hole through which the driving arm 434 of the secondary mirror 43 passes, the driving arm 434 is connected with the driving assembly 21 through the hole, and the driving assembly 21 drives the secondary mirror 43 to rotate, so that the correlation angle between the secondary mirror 43 and the primary mirror 42 can be adjusted, and the best light emitting effect can be achieved.

Referring to fig. 1-8, in a non-limiting embodiment of the present utility model, the end of the driving arm 434 of the secondary mirror 43 is provided with a tooth 4341 structure, and the tooth 4341 structure is engaged with the driving shaft 212 of the driving assembly 21. In the above technical solution, the end of the driving arm 434 is provided with the protruding tooth 4341, the driving assembly 21 further includes a driving element 211, the driving end of the driving element 211 is connected with a driving shaft 212, the driving shaft 212 is provided with a screw rod structure meshed with the tooth surface of the protruding tooth 4341 of the driving arm 434, the driving shaft 212 rotates along with the driving element 211 to drive the driving arm 434 to swing, so as to drive the secondary mirror 43 to rotate, and when the driving element 211 is stationary, the driving element 211, the driving shaft 212 and the driving arm 434 are in a self-locking state, and the secondary mirror 43 cannot rotate.

Referring to fig. 1 to 8, in a non-limiting embodiment of the present utility model, the light blocking walls 5 are disposed on the peripheral sides of the inner portions of the upper cover 1 and the base 2. In the above technical scheme, the upper cover 1 and the base 2 are both provided with the light blocking wall 5 on the peripheral sides of the primary mirror 42 and the secondary mirror 43, and the arrangement of the light blocking wall 5 can efficiently eliminate stray light generated between specular reflection, and meanwhile, the use of light shielding pieces can be reduced, the number of parts is reduced, and the cost is saved.

Referring to fig. 1 to 8, in a non-limiting embodiment of the present utility model, the base 2 is further provided with a PCB 23 and a HUD backlight assembly 22. In the above technical scheme, PCB circuit board 23, HUD assembly 22 and drive assembly 21 all set up on base 2, HUD assembly 22 locates the below of the light inlet 41 of HUD casing 4 in a poor light, HUD assembly 22 carries the light path in to HUD casing 4 through light inlet 41 in a poor light, PCB circuit board 23 and drive piece 211 distribute in HUD assembly 22 week side in a poor light, PCB circuit board 23, HUD assembly 22 and drive assembly 21 separate with primary mirror 42 and secondary mirror 43 and set up, have reduced the risk of stray light.

Referring to fig. 1 to 8, in a non-limiting embodiment of the present utility model, the base 2 is provided with a through hole 24 below the PCB 23 and the HUD backlight assembly 22, and the heat sink 3 is mounted on the base 2 extending from the through hole 24. In the above technical scheme, the driving member 211 the HUD backlight assembly 22 is required to be guaranteed not to be affected by temperature due to the precise instrument, the temperature of the PCB circuit board 23 is required to be guaranteed not to be too high due to the working of the PCB circuit board 23, and the heat dissipation member 3 is installed below the PCB circuit board 23 and the HUD backlight assembly 22 through the through hole 24 to dissipate heat, so that the precision requirement and the normal working of the head-up display of the automobile are guaranteed. Specifically, the bottom of the heat dissipation element 3 is further provided with a heat dissipation fin 31, and the heat dissipation fin 31 can volatilize heat better.

Referring to fig. 1 to 8, in a non-limiting embodiment of the present utility model, the upper cover 1 is provided with a light outlet 11, the upper cover 1 of the light outlet 11 is provided with a dust-proof member 12, the dust-proof member 12 is a dust-proof cover made of PC material, and a layer of VRC film is provided on the outer surface of the dust-proof cover. In the above technical scheme, the light path of the automobile head-up display irradiates on the windshield through the light outlet 11, the dust cover is covered at the light outlet 11 to prevent dust from entering the upper cover 1 to cause the inside to be polluted, the protection effect is achieved, the service life of the equipment is prolonged, meanwhile, the cleaning is convenient, the dust cover is preferably PC material disassembly, the PC material has the characteristics of high transparency, heat insulation and the like, the VRC film covers the dust cover, the polarization function is achieved, solar rays can enter the inside of the automobile head-up display from the light outlet 11, the solar rays can irradiate on the LCD screen 221 of the HUD backlight assembly 22, the long-time irradiation of the solar rays can enable the temperature of the LCD screen 221 to be increased, the intensity of the solar rays can be effectively reduced through the arrangement of the VRC film, the intensity of the solar rays directly irradiated on the LCD screen 221 is further reduced, the temperature of the LCD screen 221 is prevented from being increased to burn the LCD screen 221, and the problem of damaging optical elements due to backward flowing of the solar rays is solved.

Referring to fig. 1 to 8, in a non-limiting embodiment of the present utility model, the primary mirror 42 is made of glass, and a luminescent film is disposed on the primary mirror 42. In the above technical scheme, the solar light outlet 11 enters the inside of the head-up display of the automobile and irradiates on the primary mirror 42, so as to prevent the primary mirror 42 from aging under long-time irradiation of sunlight, the primary mirror 42 is preferably made of glass, and a cold light film is arranged on the surface of the primary mirror 42, so that the cold light film can reduce infrared light in the sunlight, further reduce reflection of the infrared light to the LCD screen 221, protect the LCD screen 221, and prevent the LCD screen 221 from being burnt due to temperature rise of the LCD screen 221.

In the description of the present utility model, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The foregoing examples are merely exemplary embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and that these obvious alternatives fall within the scope of the utility model.

Claims

1. The utility model provides a novel HUD structure, includes upper cover and base, the base below is connected with the radiating piece, be equipped with HUD casing, its characterized in that between upper cover and the base: the HUD shell is provided with a light inlet, one side close to the light inlet is fixedly connected with a primary mirror, one side far away from the light inlet is connected with a secondary mirror, two ends of the secondary mirror are provided with convex shafts, the corresponding positions of the HUD shell and the convex shafts are provided with positioning grooves, and the convex shafts are limited in the positioning grooves through elastic sheets.

2. A novel HUD structure according to claim 1, wherein: the elastic pieces are fixedly connected to two sides of the end face of the positioning groove, and elastic downward-pressing shifting sheets are arranged at positions, corresponding to the protruding shafts, of the elastic pieces.

3. A novel HUD structure according to claim 2, wherein: an elastic limit structure is arranged at the corresponding position of the upper cover, which is positioned on the downward pressing shifting piece.

4. A novel HUD structure according to claim 3, wherein: one end of the secondary mirror is provided with a driving arm capable of passing through the HUD shell, and the driving arm is connected with a driving assembly arranged on the base.

5. A novel HUD structure according to claim 4, wherein: the driving arm end of the secondary mirror is provided with a convex tooth structure, and the convex tooth structure is connected with the driving shaft of the driving assembly in a meshed manner.

6. A novel HUD structure according to any of claims 1 to 5, wherein: the upper cover and the peripheral side inside the base are provided with light blocking walls.

7. A novel HUD structure according to claim 6, wherein: and the base is also provided with a PCB circuit board and a HUD backlight assembly.

8. A novel HUD structure according to claim 7, wherein: the base is located the PCB circuit board and HUD backlight unit below is equipped with the through-hole, the radiating part is installed on the base that the through-hole is epitaxial.

9. A novel HUD structure according to claim 8, wherein: the upper cover is provided with a light outlet, the light outlet is covered with a dustproof piece, the dustproof piece is a dustproof cover made of PC materials, and the outer surface of the dustproof cover is provided with a layer of VRC film.

10. A novel HUD structure according to claim 9, wherein: the primary mirror is made of glass, and a cold light film is arranged on the primary mirror.