CN116841051A - Head-up display structure - Google Patents

Abstract

The application provides a head-up display structure which comprises a lower shell, a curved mirror, a transmission mechanism and an upper shell. The upper shell is provided with at least one rotating shaft connecting block, and each rotating shaft connecting block is provided with a rotating shaft accommodating groove. The curved mirror comprises a rotating shaft, the rotating shaft is arranged in the rotating shaft accommodating groove, and the curved mirror is used for reflecting images. The transmission mechanism is connected with the curved mirror and is used for enabling the curved mirror to rotate by taking the rotating shaft as the axis. The upper shell is connected with the lower shell to form a shell structure, and the rotating shaft accommodating groove is clamped between the upper shell and the rotating shaft connecting block or between the shielding body and the rotating shaft connecting block. The application achieves the effect of saving the time cost and the money cost for producing the head-up display by simplifying the structure of the head-up display.

Description

Head-up display structure

Technical Field

The application relates to the field of head-up displays, in particular to a head-up display structure.

Background

The Head-Up Display (HUD) is originally a flight auxiliary instrument of an aviation aircraft, but nowadays, the Head-Up Display is also applied to the fields of automobiles and the like, so that a user does not need to move the sight to other positions greatly, the opportunity of looking at a mobile phone or an instrument board at a low Head is reduced, an image is reflected to a windshield in front of the user through the principle of optical reflection, the image is directly presented in front of the field of view of the user, and more convenient and safer driving experience of the user is provided.

The head-up display can be provided with a preset image projection system or a mobile phone frame for a user to place the mobile phone on the mobile phone frame, and the image presented by the image projection system or the mobile phone is presented in front of the eyes of the user in an optical reflection mode through a curved mirror built in the head-up display.

However, since the head-up display needs to adjust the angle of the curved mirror according to the position of the head-up display placed on the vehicle or the aircraft so that the image can be displayed at the desired position, a transmission mechanism and a rotating shaft holder (holder) are generally disposed in the structure of the head-up display, the curved mirror is provided with a rotating shaft, the rotating shaft holder is used for holding the rotating shaft of the curved mirror, and a metal elastic sheet is generally disposed to prevent vibration of the curved mirror, and the transmission mechanism is connected with the curved mirror so that the curved mirror rotates around the rotating shaft as an axis, but such a structural design still has to be solved.

First, the current trend of the head-up display is to miniaturize and improve the Field of View (FOV), and the current adjustment method is to narrow the housing at the lower half of the head-up display and increase the area of the curved mirror, but in the related art, in order to limit the rotation axis of the curved mirror, the rotation axis holder must be set, and the rotation axis holder must be set to represent a space where the rotation axis holder must be reserved in the head-up display, so a distance of 9 mm is generally reserved beside the side wall of the head-up display to set the rotation axis holder, but this is also compressed to the space in the head-up display, which makes it difficult to further increase the area of the curved mirror, i.e. it is difficult to further increase the Field of View, affecting the miniaturization of the head-up display and improving the Field of View.

In addition, the rotation shaft holder may be required to be assembled at a specific angle, and it is not easy to assemble the rotation shaft holder in a limited space inside the head up display, and since additional production of the rotation shaft holder and parts for fixing the rotation shaft holder to the housing of the head up display are also required, the time cost and the money cost required for producing the head up display are increased.

Disclosure of Invention

An object of the present application is to solve the problems of the related art that a rotary shaft holder needs to be additionally provided, the development of the head-up display toward miniaturization and improvement of the visual field range is limited, and the time cost and the money cost required for producing the head-up display are increased.

Based on the purpose of the application, the application provides a head-up display structure which comprises a lower shell, a curved mirror, a transmission mechanism and an upper shell. The lower shell is provided with at least one rotating shaft connecting block, and each rotating shaft connecting block is provided with a rotating shaft accommodating groove. The curved mirror comprises a rotating shaft, the rotating shaft is arranged in the rotating shaft accommodating groove, and the curved mirror is used for reflecting images. The transmission mechanism is connected with the curved mirror and is used for enabling the curved mirror to rotate by taking the rotating shaft as the axis. The upper shell is connected with the lower shell to form a shell structure, and the rotating shaft accommodating groove is clamped between the upper shell and the rotating shaft connecting block or between the shielding body and the rotating shaft connecting block.

In an embodiment of the application, when the rotating shaft accommodating groove is clamped between the upper shell and the rotating shaft connecting block, the upper shell covers the opening of the rotating shaft accommodating groove.

In an embodiment of the present application, when the rotating shaft accommodating groove is clamped between the upper housing and the rotating shaft connecting block, the upper housing further includes an opening covering block, the opening covering block is connected with the rotating shaft connecting block, and the rotating shaft accommodating groove is clamped between the opening covering block and the rotating shaft connecting block.

In an embodiment of the application, when the rotating shaft accommodating groove is sandwiched between the upper housing and the rotating shaft connecting block, the upper housing further includes a light shielding wall disposed on an inner side of the upper housing for inhibiting generation of stray light.

In an embodiment of the application, when the rotating shaft accommodating groove is clamped between the shielding body and the rotating shaft connecting block, the head-up display structure further comprises at least one shielding body, and the shielding body is arranged on the rotating shaft connecting block, so that the rotating shaft accommodating groove is clamped between each shielding body and each rotating shaft connecting block.

In an embodiment of the application, the upper housing is a light shielding structure, and is disposed above the lower housing for shielding stray light.

In an embodiment of the application, the rotating shaft accommodating groove is disposed at an edge area of the rotating shaft connecting block.

In one embodiment of the present application, the curved mirror is a spherical mirror, an aspherical mirror, or a free-form curved mirror.

In an embodiment of the application, the lower housing includes a built-in image projection device for projecting an image.

In an embodiment of the application, the lower housing includes a rack for placing an image projection device for projecting an image.

In summary, the structure of the head-up display is simplified by improving the structure of the head-up display, so that the head-up display can still achieve the function of adjusting the rotation angle of the curved mirror, and the effects of saving the time cost and the money cost for producing the head-up display are achieved.

Drawings

Fig. 1 is a schematic view of an upper housing according to an embodiment of the application.

Fig. 2 is a schematic diagram of a head-up display according to an embodiment of the application.

Fig. 3 is a schematic perspective view of region a of fig. 2 from another side view.

Fig. 4 is a schematic view of an upper housing according to another embodiment of the present application.

Fig. 5 is a schematic diagram of a head-up display according to another embodiment of the application.

Fig. 6 is a schematic perspective view of region B of fig. 5 from another side view.

Fig. 7 is a schematic view of an upper housing in a further embodiment of the application.

Fig. 8 is a schematic diagram of a head-up display according to another embodiment of the application.

Fig. 9 is a schematic perspective view of region C of fig. 8 from another side view.

Reference numerals illustrate:

1: upper shell

2: lower shell

3: transmission mechanism

4: curved mirror

10: light shielding wall

12: open cover block

20: rotary shaft connecting block

22: rotating shaft accommodating groove

24: shielding body

40: rotary shaft

Detailed Description

In order to make the contents of the present application easy for a person having ordinary skill in the art to understand, the present application will be further described with reference to the following examples and the accompanying drawings, wherein each example is only for illustrating the technical features of the present application, and the mentioned contents are not meant to limit the present application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or component referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present application.

Reference throughout this specification to "one embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, references to "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Referring to fig. 1 to 9, the present application provides a head-up display structure, which includes an upper housing 1, a lower housing 2, a transmission mechanism 3 and a curved mirror 4, wherein the upper housing 1 is used for being assembled with the lower housing 2 together to form a housing structure of the head-up display, and the transmission mechanism 3 and the curved mirror 4 are disposed in the housing structure formed by the upper housing 1 and the lower housing 2 together. The lower case 2 is provided with at least one rotation shaft connection block 20, and each rotation shaft connection block 20 is provided with a rotation shaft receiving groove 22. The curved mirror 4 includes a rotation shaft 40, and the rotation shaft 40 is disposed in the rotation shaft accommodating groove 22. The transmission mechanism 3 is connected to the curved mirror 4, and rotates the curved mirror 4 around the rotation shaft 40. In addition, the head-up display structure of the present application includes a built-in image projection device (not shown) or a rack (not shown) for placing an image projection device such as a mobile phone, so that the user can play the image to be presented through the built-in image projection device or the image projection device such as the mobile phone, and the image is reflected by the reflecting surface of the curved mirror 4 to the object in front of the user's field of view, for example, when the user is in use on an automobile, the object is a windshield in front of the user, so that the image can be reversely arranged on the windshield, and the user can directly view the image in front of the field of view.

Referring to fig. 1, 2, 4, 5, 7 and 8, in an embodiment of the application, the upper housing 1 is a light shielding structure, and is disposed above the lower housing 2 for shielding stray light to avoid the influence of stray light and reduce the definition and contrast of an image presented by the head-up display through optical reflection.

Referring to fig. 2, 5 and 8, in an embodiment of the present application, the curved mirror 4 may be a spherical mirror, an aspherical mirror or a free-form mirror (FFM) for magnifying and reflecting an image to be projected, and in a preferred embodiment of the present application, the curved mirror 4 is a free-form mirror, and has a higher degree of freedom in design than the spherical mirror and the aspherical mirror, and may be designed to be smaller in size and thus lighter in weight, and may reduce image distortion, thereby providing a better use experience for users.

Referring to fig. 1, 2 and 3, in an embodiment of the present application, the transmission mechanism 3 is connected to one side of the curved mirror 4 by a connecting rod, the rotating shaft 40 of the curved mirror 4 is disposed in the rotating shaft accommodating groove 22, the upper housing 1 further includes a light shielding wall 10 and an opening covering block 12, the light shielding wall 10 and the opening covering block 12 are disposed inside the upper housing 1, and in this embodiment, the light shielding wall 10 and the opening covering block 12 are integrally formed, but in practice, the application is not limited thereto, and the light shielding wall 10 and the opening covering block 12 may be independently disposed. The light shielding wall 10 is used for reducing the generation of stray light, so in the present embodiment, the light shielding wall 10 is of a wavy design to inhibit the light scattering condition, and reduce the generation of stray light, so as to provide a better image display effect. The open cover block 12 is used for connecting with the rotary shaft connection block 20 and covering the opening of the rotary shaft accommodating groove 22 on the rotary shaft connection block 20, so that the rotary shaft accommodating groove 22 is sandwiched between the open cover block 12 and the rotary shaft connection block 20. In the present embodiment, the upper case 1 and the lower case 2 are assembled using screws to form a case structure. Based on the above description, when the transmission mechanism 3 rotates the curved mirror 4, the rotation shaft 40 of the curved mirror 4 is disposed in the rotation shaft accommodating groove 22, and the opening of the rotation shaft accommodating groove 22 is blocked by the opening blocking block 12 of the upper case 1, so that the curved mirror 4 rotates by the transmission mechanism 3, and the rotation shaft 40 of the curved mirror 4 is limited, so that the curved mirror 4 rotates around the rotation shaft 40. The purpose of limiting the rotation shaft 40 of the curved mirror 4 is to prevent the rotation shaft 40 from falling out of the opening of the rotation shaft accommodating groove 22 and falling off during rotation or during driving of vehicles such as vehicles or aviation aircrafts by a user, which causes that the curved mirror 4 cannot amplify and reflect the image to be displayed normally and even causes damage of the curved mirror 4 due to collision. Therefore, the opening of the rotation shaft accommodating groove 22 is blocked by the opening blocking block 12 of the upper casing 1, so that the rotation shaft 40 can only rotate in the rotation shaft accommodating groove 22, and when the transmission mechanism 3 rotates the curved mirror 4, the curved mirror 4 rotates around the rotation shaft 40 to achieve the purpose of adjusting the angle of the curved mirror 4, and meanwhile, the falling-off of the curved mirror 4 is prevented.

The above-described structure is merely an example, but the present application is not limited to this, and the driving mechanism 3 may be connected to the lower edge or the back side of the curved mirror 4 to rotate the curved mirror 4, and the back side of the curved mirror 4 is the side of the curved mirror 4 opposite to the reflecting surface of the curved mirror 4. When the transmission mechanism 3 is connected to the lower edge or the back side of the curved mirror 4, the rotation shaft 40 may be split into two sections and respectively disposed on the left and right sides of the curved mirror 4, the left and right sides of the lower housing 2 are respectively provided with the rotation shaft connection blocks 20, the left and right sides of the rotation shaft connection blocks 20 are also respectively provided with the rotation shaft accommodating grooves 22 to accommodate the rotation shafts 40 on the left and right sides, and the left and right sides of the upper housing 1 are also respectively provided with the light shielding wall 10 and the opening shielding block 12, so after the upper housing 1 and the lower housing 2 are assembled, the opening shielding block 12 is connected with the corresponding rotation shaft connection blocks 20, and the rotation shaft accommodating grooves 22 are clamped between the opening shielding block 12 and the rotation shaft connection blocks 20, so as to achieve the purpose of limiting the rotation shafts 40 on the left and right sides of the curved mirror 4. The foregoing is merely exemplary, and the present application is not limited thereto, and the rotation shaft 40 is not limited to be split into two segments, but may be a complete shaft, and may be attached to the back side of the curved mirror 4 or penetrate the curved mirror 4.

Referring to fig. 4, 5 and 6, in another embodiment of the present application, the upper housing 1 is not provided with the light shielding wall 10, but is directly provided with the open shielding block 12, in this structure, after the upper housing 1 and the lower housing 2 are assembled, the upper housing 1 may still be connected to the top of the rotating shaft connecting block 20 through the bottom of the open shielding block 12, and the rotating shaft accommodating groove 22 is sandwiched between the open shielding block 12 and the rotating shaft connecting block 20, so after the upper housing 1 and the lower housing 2 are assembled, the upper opening of the rotating shaft accommodating groove 22 at the top of the rotating shaft connecting block 20 is covered by the open shielding block 12 of the upper housing 1, so as to limit the rotating shaft 40, and prevent the rotating shaft 40 from falling out of the rotating shaft accommodating groove 22 due to the relation of too high rotating speed or vibration during driving, so when the transmission mechanism 3 rotates the curved mirror 4 together with the rotating shaft 40, the rotating shaft 40 may still be maintained in a state in the rotating shaft accommodating groove 22 during the rotating period, when the transmission mechanism 3 rotates the curved mirror 4, and thus the curved mirror 4 rotates around the rotating shaft 40 as the axis 40 to achieve the purpose of adjusting the curved mirror 4.

Referring to fig. 7, 8 and 9, in still another embodiment of the present application, the upper housing 1 is not provided with the light shielding wall 10 and the open shielding block 12, but is provided with the shielding body 24 at the top of the rotating shaft connecting block 20 of the lower housing 2, the rotating shaft accommodating groove 22 is provided at the top of the rotating shaft connecting block 20 of the lower housing 2, and the opening of the rotating shaft accommodating groove 22 is upward, so that the rotating shaft 40 of the curved mirror 4 is limited by using the shielding body 24 to replace the open shielding block 12 above the opening of the rotating shaft accommodating groove 22 at the top of the rotating shaft connecting block 20, thereby achieving the effect of preventing the rotating shaft 40 from vibrating and falling out of the rotating shaft accommodating groove 22 as described above.

Referring to fig. 7, 8 and 9, in a further embodiment of the present application, the shielding body 24 is a spring plate, and the shielding body 24 is fixed by fixing the shielding body 24 above the rotating shaft connecting block 20 by using a screw, so that an upper opening of the rotating shaft accommodating groove 22 at the top of the rotating shaft connecting block 20 is covered by the shielding body 24. The above is merely an example, and the manner of fixing the shielding body 24 to the rotation shaft connection block 20 is not limited to this, and may be a manner of fastening or adhering by using a buckle, so that the shielding body 24 is fixed to the rotation shaft connection block 20 and the shielding body 24 covers the opening of the rotation shaft accommodating groove 22 on the rotation shaft connection block 20.

Referring to fig. 1, 4 and 7, in the foregoing embodiment, the upper housing 1 and the lower housing 2 are assembled by screw fixation, but the present application is not limited to this, and the upper housing 1 and the lower housing 2 may be assembled by snap-fit or adhesion.

Referring to fig. 3, 6 and 9, in the foregoing embodiments, the rotation shaft accommodating groove 22 is disposed on top of the rotation shaft connecting block 20 that is rectangular, and disposed at the edge region of the rotation shaft connecting block 20, and is in a U-shape with an upward opening, so that the user can conveniently install the rotation shaft 40 of the curved mirror 4 into the rotation shaft accommodating groove 22 only by placing the rotation shaft accommodating groove from top to bottom, but the application is not limited to this, the shape of the rotation shaft accommodating groove 22 can be different shapes such as a U-shape, a partial circle, a square, a rectangle, a trapezoid or a regular hexagon, and one side of the shape is an opening position, and the formed groove structure is not limited to a polygon, and the shape of the rotation shaft accommodating groove 22 can be adjusted according to the requirement. In addition, the rotation shaft accommodating groove 22 is not limited to be disposed above the rotation shaft connecting block 20, and may be disposed at a side of the rotation shaft connecting block 20, and the opening covering block 12 may be disposed at a position corresponding to the side of the rotation shaft connecting block 20 where the rotation shaft accommodating groove 22 is disposed, so that the opening covering block 12 covers the opening of the rotation shaft accommodating groove 22 by the side. The opening of the rotation shaft accommodating groove 22 is not limited to the upward configuration, and the opening of the rotation shaft accommodating groove 22 may be a diagonally forward or backward configuration, and the present application is not particularly limited.

Compared with the related art, the structure of the head-up display provided by the application omits the requirement of arranging the rotary shaft 40 clamp holder, and instead, the rotary shaft 40 of the curved mirror 4 is arranged in the rotary shaft accommodating groove 22 of the rotary shaft connecting block 20 of the lower shell 2, and the purpose of limiting the rotary shaft 40 is achieved by arranging the opening covering block 12 on the upper shell 1 or directly arranging the shielding body 24 on the rotary shaft connecting block 20.

Compared with the prior art, the application omits the part for arranging the rotary shaft 40 clamp holder, the rotary shaft connecting block 20 does not occupy too much space, and the rotary shaft connecting block 20 can be of a block structure protruding inwards by 1-3 mm from the inner side wall of the rotary shaft 40, so that compared with the prior art, the application can save the time cost and the money cost for producing the parts of the rotary shaft 40 clamp holder, and simultaneously save the inner space of the head-up display, so that the application can have larger space and can arrange the curved mirror 4 with larger area to improve the visual field range, and the application also does not need to assemble the rotary shaft 40 clamp holder in the limited space of the head-up display like the prior art, thereby the assembly mode of the application is simpler and more convenient than the prior art, and is beneficial to improving the production efficiency for preparing the head-up display.

In summary, the structure of the head-up display is simplified by improving the structure of the head-up display, so that the head-up display still has the function of adjusting the rotation angle of the curved mirror, and meanwhile, the head-up display has the advantages of saving the time cost and the money cost for producing the head-up display.

Claims (10)

1. A head-up display structure, comprising:

the lower shell is provided with at least one rotating shaft connecting block, and each rotating shaft connecting block is provided with a rotating shaft accommodating groove;

the curved mirror comprises a rotating shaft, the rotating shaft is arranged in the rotating shaft accommodating groove, and the curved mirror is used for reflecting images;

the transmission mechanism is connected with the curved mirror and is used for enabling the curved mirror to rotate by taking the rotating shaft as an axle center;

the upper shell is connected with the lower shell to form a shell structure, and the rotating shaft accommodating groove is clamped between the upper shell and the rotating shaft connecting block or between the shielding body and the rotating shaft connecting block.

2. The head-up display structure according to claim 1, wherein when the rotation shaft accommodating groove is sandwiched between the upper housing and the rotation shaft connecting block, the upper housing covers an opening of the rotation shaft accommodating groove.

3. The head-up display structure according to claim 1, wherein when the rotation shaft accommodation groove is interposed between the upper case and the rotation shaft connection block, the upper case further includes an opening cover block connected with the rotation shaft connection block, and the rotation shaft accommodation groove is interposed between the opening cover block and the rotation shaft connection block.

4. The head-up display structure according to claim 3, wherein when the rotation shaft accommodating groove is sandwiched between the upper housing and the rotation shaft connecting block, the upper housing further comprises a light shielding wall disposed on an inner side of the upper housing for suppressing generation of stray light.

5. The head-up display structure according to claim 1, further comprising at least one of the shielding bodies disposed on the rotation shaft connection blocks such that the rotation shaft accommodation groove is sandwiched between each of the shielding bodies and each of the rotation shaft connection blocks when the rotation shaft accommodation groove is sandwiched between the shielding body and the rotation shaft connection blocks.

6. The head-up display structure according to claim 1, wherein the upper housing is a light shielding structure disposed above the lower housing for shielding stray light.

7. The head-up display structure according to claim 1, wherein the rotation shaft receiving groove is provided at an edge region of the rotation shaft connection block.

8. The heads-up display structure of claim 1 wherein the curved mirror is a spherical mirror, an aspherical mirror or a free-form curved mirror.

9. The head-up display structure of claim 1, wherein the lower housing comprises a built-in image projection device for projecting the image.

10. The head-up display structure of claim 1, wherein the lower housing comprises a shelf for a user to place an image projection device for projecting the image.