Auxiliary polarizer for vehicle-mounted head-up display and vehicle-mounted head-up display

Abstract

The invention relates to the technical field of vehicle-mounted head-up displays, in particular to an auxiliary polarizer for a vehicle-mounted head-up display, and the auxiliary polarizer comprises a base which is used for being arranged in a sight line path which is a light propagation path between a driver and a projection picture; the polarized lens is a circular lens; the adjusting mechanism comprises a loading part connected with the base, and the polarized lens is rotationally connected with the loading part; the plurality of extrusion rollers are arranged on the side wall of the loading part; and the extrusion roller clamps the polarized lens, so that the polarized lens is in a vertical posture, and the polarized lens is rotationally connected with the loading component. By using the auxiliary polarizer, a driver can still see a projection picture of a head-up display clearly while wearing polarized sunglasses in any polarization direction to filter reflected light and glare.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle-mounted head-up displays, in particular to an auxiliary polarizing mirror for a vehicle-mounted head-up display and a vehicle-mounted head-up display. Background Art

[0002] The head-up display can project important driving information such as speed and navigation onto the windshield in front of the driver, allowing the driver to see important driving information such as speed and navigation without lowering his head.

[0003] At present, most head-up displays project light with 0-degree polarization, which is consistent with the polarization direction of the reflected light, so polarized sunglasses will filter out the projected image when filtering reflections. Polarized sunglasses have a polarization angle of 90 degrees, which can filter reflections and glare, which means that the driver cannot use the head-up display when wearing polarized sunglasses to filter reflections.

[0004] To address this issue, some manufacturers choose to use a 45-degree polarization angle projection. However, the 45-degree polarization angle projection is lower in brightness than the 0-degree polarization angle light. In other words, the 45-degree polarization angle head-up display sacrifices some of the daily viewing effect so that the driver can wear polarized sunglasses to see the projected image. However, for most people, the number of times they drive with polarized glasses is far less than the number of times they drive without polarized glasses. Therefore, sacrificing some of the daily viewing effect in exchange for being able to wear polarized sunglasses to see the projected image is not worth it for most people.

[0005] Therefore, the prior art does not provide a good solution to the problem of being unable to watch the head-up display while wearing polarized glasses. Summary of the invention

[0006] In order to solve the above-mentioned prior art problems, the present invention provides an auxiliary polarizing mirror for a vehicle-mounted head-up display, comprising: a base, which is used to be arranged in a sight path, and the sight path is a light propagation path between a driver and a projection screen;

[0007] A polarized lens, wherein the polarized lens is a circular lens;

[0008] An adjustment mechanism, the adjustment mechanism comprising: a loading component connected to the base, the polarized lens being rotatably connected to the loading component; and a plurality of squeezing rollers arranged on a side wall of the loading component;

[0009] The squeezing roller clamps the polarized lens so that the polarized lens is in a vertical position and the polarized lens is rotatably connected to the loading component.

[0010] Furthermore, a circle of wedge-shaped protrusions is provided on the edge of the polarized lens, and the wedge-shaped protrusions protrude toward both ends of the polarized lens in the axial direction, and the inner wall surface of the wedge-shaped protrusions forms a mounting slope, and the protruding mounting slopes at both ends are symmetrical to each other;

[0011] The adjustment mechanism further includes a plurality of squeezing rollers disposed on the side wall of the loading component;

[0012] The squeezing roller squeezes the installation slope, and the loading component supports the circumferential wall surface of the polarized lens;

[0013] The squeezing roller only clamps a portion of the polarized lens within a distance L1 from the bottom surface of the base, 6cm>L1>2cm.

[0014] Furthermore, a support assembly is provided at the bottom of the loading component, and the support assembly includes a support frame and a plurality of support rollers rotatably connected to the support frame, and the plurality of support rollers are in contact with the circumferential wall surface of the polarized lens;

[0015] Wherein, the support frame and the bottom surface of the loading component are provided with a first elastic member, and the first elastic member applies a force on the support frame toward the polarized lens.

[0016] Furthermore, the polarized lenses are stacked in multiple layers, and the polarization angles of the polarized lenses in each layer are equal.

[0017] Furthermore, it also includes a locking mechanism, wherein the locking mechanism includes a locking pressure block slidably connected to the loading component and a second elastic member fixedly connected to the loading component;

[0018] There are two locking pressure blocks symmetrically arranged, respectively abutting against the squeezing rollers on both sides of the loading component;

[0019] The locking block slides toward or away from the squeezing roller; the second elastic member applies a force toward the squeezing roller to the locking block;

[0020] The wall surface of the locking pressure block abutting against the squeezing roller is a locking surface, and the locking surface is provided with a rubber layer.

[0021] Furthermore, the locking surface at least abuts against a plurality of the squeezing rollers;

[0022] Wherein, the locking surface is provided with a plurality of locking grooves, which respectively correspond to the plurality of squeezing rollers abutted by the locking surface;

[0023] The locking groove passes through the locking surface in its length direction, and is parallel to the axis of the extrusion roller; the wall surface of the locking groove is a semicircular arc surface that fits the circumferential wall surface of the extrusion roller.

[0024] Further, it also includes an unlocking abutment portion and a driving screw;

[0025] The unlocking abutment is slidably connected to the loading component; the driving screw is rotatably connected to the loading component, and the axis of the driving screw is parallel to the axis of the polarized lens; the driving screw is threadedly connected to the unlocking abutment;

[0026] The unlocking abutment portion has an abutment slope A, and the locking pressure block has an abutment slope B; the abutment slope A and the abutment slope abut against each other, converting part of the force in the axial direction into a force in the height direction, so that the locking pressure block is away from the squeezing roller;

[0027] The axis direction is the axis direction of the polarized lens, and the height direction is the height direction of the polarized lens.

[0028] Furthermore, the driving screw is a double-ended screw, with the threads at both ends having opposite rotation directions;

[0029] The unlocking abutment parts have two parts, which are respectively screwed to two sections of threads of the driving screw;

[0030] The driving screw is rotated so that the two unlocking abutting portions approach each other.

[0031] Further, it comprises an articulated seat fixedly arranged on the base, and a first articulated shaft articulated with the articulated seat;

[0032] The first hinge shaft is fixedly connected to the loading component to drive the loading component to flip;

[0033] The first articulated shaft is provided with a driving motor;

[0034] and a controller for controlling the drive motor.

[0035] A vehicle-mounted head-up display comprises any one of the above-mentioned auxiliary polarizing lenses for a vehicle-mounted head-up display.

[0036] The beneficial effect of the present invention is that, by using the auxiliary polarized glasses of the present application, the driver can still see the projection image of the head-up display clearly while wearing polarized sunglasses to filter reflections and glare. In addition, the auxiliary polarized glasses of the present application can further adjust the brightness of the projection image under normal driving conditions according to the line of sight of the driver leaving the projection image when not wearing polarized sunglasses. In addition, the adjustment mechanism of the present application enables the polarized lenses to adapt to the deviation between the polarized sunglasses of different drivers and the projection light of the head-up display, thereby ensuring the brightness of the image seen when wearing polarized sunglasses to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of the three-dimensional structure of the auxiliary polarizer provided by the present invention;

[0038] Figure 2 This is a schematic diagram of the front view structure of the auxiliary polarizer provided by the present invention;

[0039] Figure 3 A cross-sectional view of the auxiliary polarizer provided by the present invention;

[0040] Figure 4 A cross-sectional view of the auxiliary polarizer provided by the present invention from another viewing angle;

[0041] Figure 5 A three-dimensional cross-sectional view of the auxiliary polarizer provided by the present invention;

[0042] Figure 6 A schematic diagram of a sight line path provided by the present invention;

[0043] Figure 7 This is a schematic diagram of the three-dimensional structure of the head-up display provided by the present invention.

[0044] : 1. base; 11. hinge seat; 12. first hinge axis; 13. drive motor; 2. polarized lens; 21. wedge-shaped protrusion; 211. mounting slope; 3. adjustment mechanism; 31. extrusion roller; 32. loading component; 33. support assembly; 331. support frame; 332. support roller; 333. first elastic member; 4. locking mechanism; 41. locking block; 411. locking surface; 4111. locking groove; 412. abutment slope A; 42. second elastic member; 51. unlocking abutment portion; 511. abutment slope B; 52. drive screw; 61. dust cover; 62. second hinge axis; 63. toggle surface; 7. sight path. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] Example 1

[0047] Reference Figure 1-Figure 6 .

[0048] An auxiliary polarizing lens for a vehicle-mounted head-up display comprises a base 1, which is used to be arranged in a sight path 7, wherein the sight path 7 is a light propagation path between a driver and a projection screen;

[0049] A polarized lens 2, wherein the polarized lens 2 is a circular lens;

[0050] The adjusting mechanism 3 includes: a loading component connected to the base 1, the polarized lens 2 is rotatably connected to the loading component 32; and a plurality of squeezing rollers 31 arranged on the side wall of the loading component 32;

[0051] The squeezing roller 31 clamps the polarized lens 2 so that the polarized lens 2 is in a vertical position, and the polarized lens 2 is rotatably connected to the loading component 32 .

[0052] The auxiliary polarizer of the present application is not a pair of glasses, but a lens. According to the experiment of the quantum Venn diagram paradox, two polarizers with perpendicular polarization angles can block all light, but after adding a lens with a polarization angle of 45 degrees (not 90 degrees or 0 degrees are also effective) between the two polarizers, some light will pass through the last polarizer. This is because the 45-degree polarizer allows some horizontal or vertical polarized light to pass through, and also rotates the light by 45 degrees, so that the light passing through the 45-degree polarizer is no longer perpendicular to the last polarizer, so the light can pass through the last polarizer. In short, a polarizer that is not perpendicular to the polarization direction of polarized light can rotate the polarization direction of polarized light.

[0053] Based on this basic principle, in the present application, a polarized lens 2 with a polarization angle of 45 degrees is arranged in the line of sight path 7 between the human eye and the projected image, that is, the driver sees the projected image through this polarized lens 2 (for some models with head-up displays, the image will be projected into the car window, and for independent head-up displays, it will be projected into a screen).

[0054] The difficulty in achieving this effect lies in how to place the polarized lens 2 in the line of sight path 7. The usage scenario of the present application is during driving, so it is necessary to reduce the interference of the line of sight. This results in that the polarized lens 2 in the present application cannot be set with a circular ring frame around the lens like the polarized lens of a camera. In order to ensure that the driver can only see the projected image through the polarized lens 2, the top position of the polarized lens 2 will definitely be very protruding from the center console, and the position is close to the personnel. When the driver checks the road conditions, he will definitely see the higher position of the polarized lens 2 with his peripheral vision. If there is a circle of opaque outline on the edge of the polarized lens 2, it will definitely seriously attract the driver's attention, and the head-up display will lose its function of improving driving safety.

[0055] In addition, the polarized lens 2 is not fixed, and the polarized lens 2 needs to have the function of adjusting the polarization angle only by clamping the edge of the polarized lens 2. The projected image entering the human eye is only polarized close to the horizontal direction and not completely horizontal. Similarly, the polarization direction of the polarized sunglasses is not absolutely vertical, so the position of the angle bisector between the two cannot be determined. Therefore, the user needs to rotate the polarized lens 2 for correction according to the on-site equipment to ensure that the brightness of the light that finally enters the human eye through the polarized lens 2 is sufficient. When the driver wears polarized sunglasses and cannot see the vehicle head-up display or the light is too weak, the polarized lens 2 can be rotated to 45° (or the position of the angle bisector between the polarized light and the polarized sunglasses) to rotate the projected polarized light so that the light can pass through the polarized sunglasses into the human eye; when not needed, it can be rotated to an angle parallel to the polarization direction of the projection to allow the projected light to pass through completely.

[0056] Furthermore, a circle of wedge-shaped protrusions 21 are provided on the edge of the polarized lens 2, and the wedge-shaped protrusions 21 protrude toward both ends of the axial direction of the polarized lens 2, and the inner wall surface of the wedge-shaped protrusions 21 forms a mounting slope 211, and the protruding mounting slopes 211 at both ends are symmetrical to each other;

[0057] The adjustment mechanism 3 further includes a plurality of squeezing rollers 31 disposed on the side wall of the loading component 32;

[0058] The squeezing roller 31 squeezes the installation slope 211, and the loading component 32 supports the circumferential wall surface of the polarizing lens 2;

[0059] The squeezing roller 31 only clamps a portion of the polarized lens 2 within a distance L1 from the bottom surface of the base 1 , 6 cm>L1>2 cm.

[0060] Specifically, the edge of the polarized lens 2 has a wedge-shaped protrusion 21, which protrudes toward both ends of the polarized lens 2 in the axial direction. The inner wall surface of the wedge-shaped protrusion 21 forms a mounting bevel 211, and the protruding mounting bevels 211 at both ends are symmetrical to each other. Although the polarized lens 2 has a wedge-shaped protrusion 21, it is still a complete transparent lens. The cross-sectional shape of the polarized lens 2 along the diameter direction is similar to the cross-sectional shape of the I-beam. The wedge-shaped protrusion 21 is equivalent to the upper and lower wing plates of the I-beam, the lens body is equivalent to the web, and the inner wall surface of the wedge-shaped protrusion 21 refers to the opposite wall surface of the upper and lower wing plates, but the inclination angle of the mounting bevel 211 is larger than that of the cross-sectional angle of the I-beam. Lenses of this shape can be made by lathes without overly complicated processes. It also includes an adjustment mechanism 3 for connecting the base 1 and the polarized lens 2, including at least a plurality of squeezing rollers 31, and at least two squeezing rollers 31 are arranged on the mounting inclined surfaces 211 at both ends to ensure that the polarized lens 2 is subjected to balanced force so that the polarized lens 2 is in a vertical position. The vertical position here is not completely perpendicular to the horizontal plane, and the vertical position is within the range of ±15 degrees.

[0061] More specifically, the adjustment mechanism 3 has a loading component 32, and the squeezing roller 31 is rotatably connected to two side wall surfaces of the loading component 32, and the axis of the squeezing roller 31 and the bottom surface of the loading component 32 form a cavity;

[0062] In the longitudinal section direction of the polarizing lens 2, the mounting inclined surfaces 211 at both ends abut against the squeezing roller 31, and the axial edge of the polarizing lens 2 abuts against the bottom surface of the loading component 32, ensuring that both ends of the polarizing lens 2 are subjected to symmetrical downward forces from the squeezing roller 31, and at the same time are subjected to an upward supporting force from the bottom surface of the loading component 32.

[0063] Before use, turn on the HUD projection, stick the base 1 to a suitable position on the car's center console with 3M adhesive, then wear polarized sunglasses, and use your fingers to rotate the edge of the polarized lens 2 to an angle that allows you to see the HUD projection image as clearly as possible.

[0064] More specifically, the squeezing roller 31 only contacts the installation inclined surface 211 within a distance L1 from the bottom surface of the base 1, 6cm>L1>2cm. This means that the squeezing roller 31 only blocks a part of the polarized lens 2, ensuring that there is no object blocking or attracting the driver's sight at a higher position.

[0065] Placing the polarized sunglasses in the visual path 7 ensures that the driver can avoid glare and reflection interference from the environment and can also see the projection image of the head-up display clearly. At the same time, the polarized lens 2 in the embodiment is arranged on the adjustment mechanism 3 and can rotate, that is, it can change its own polarization direction. When the driver does not wear polarized sunglasses, the polarized lens 2 of the present application can rotate to the effect of parallel polarization direction of the projection light, so that the light of the projection image can completely enter the human eye through the polarized lens 2, ensuring the brightness and clarity of the projection image.

[0066] Furthermore, a support assembly 33 is provided at the bottom of the loading component 32, and the support assembly 33 includes a support frame 331 and a plurality of support rollers 332 rotatably connected to the support frame 331, and the plurality of support rollers 332 are in contact with the circumferential wall surface of the polarized lens 2;

[0067] The support frame 331 and the bottom surface of the loading component 32 are provided with a first elastic member 333 , and the first elastic member 333 applies a force to the support frame 331 toward the polarized lens 2 .

[0068] The circumferential wall surface of the polarized lens 2 directly abuts against the bottom wall of the loading component 32. When the polarized lens 2 rotates, sliding friction will be generated with the bottom wall of the loading component 32, which will wear the polarized lens 2. The greater the abutment force of the squeezing roller 31 on the polarized lens 2, the more stable the polarized lens 2 is. However, the greater the pressure on the polarized lens 2, the greater the friction during rotation, which causes the polarized lens 2 to not rotate smoothly. In this regard, the present embodiment is provided with a support assembly 33, which is arranged above the bottom wall of the loading component 32, and a first elastic member 333 is arranged between the two. The loading component 32 is fixed, and the first elastic member 333 pushes the support frame 331 and the support roller 332 to support the polarized lens 2 above. The squeezing roller 31 and the support roller 332 clamp the wedge-shaped protrusion 21, so that the polarized lens 2 is connected to the loading component 32, and the squeezing roller 31 and the support roller 332 can both rotate, and there is rolling friction with the polarized lens 2, so that the resistance of the polarized lens 2 during rotation can be greatly reduced.

[0069] At least two supporting rollers 332 are symmetrically arranged on both sides of the polarizing lens 2 .

[0070] Example 2

[0071] Reference Figure 4 , Figure 5 .

[0072] The polarized lenses 2 are stacked with multiple layers, and the polarization angles of the polarized lenses 2 in each layer are equal.

[0073] According to the polarization paradox of light, if 89 polarizers are added between two vertical polarizers, and the angle difference between them is 1°, then according to Malus's law, I = I0 (cos 2 b°) n+1 , I is the intensity of transmitted light, I0 is the intensity of incident light, b is the angle, n is the number of inserted polarizers, and the final theoretical light intensity passing through is 97.296%. In an ideal state, the more polarizers are added between two vertical polarizers, the more light intensity will pass through. The specific transmittance is shown in Table 1.

[0074] For some head-up displays that can project 45° polarized light, the light intensity seen by the driver when wearing polarized sunglasses is only 50%, and adding polarized lenses 2 can increase the light intensity passing through, so that the driver can see the projected image more clearly. The specific light transmittance is shown in Table 2.

[0075] By observing Table 1 and Table 2, it can be found that for both 0-degree and 45-degree polarized head-up displays, the transmittance can be significantly increased by increasing the number of polarized lenses 2, making the projected image passing through the polarized sunglasses into the driver's glasses clearer.

[0076] However, the number of polarizers added and the final transmittance are nonlinearly distributed in a logarithmic form, and the transmittance improvement brought by each subsequent polarizer is very small; and considering the loss of light in the polarizer itself will also affect the brightness of the final light to a certain extent; and considering the difficulty of production. The best setting of 3-6 polarizers 2 takes into account both low production cost and high transmittance.

[0077] Table 1 shows the theoretical transmittance results based on Malus's law when different numbers of uniform polarization angle lenses are inserted between two polarization filters with orthogonal polarization angles of 90 degrees.

[0078] Table 2 shows the theoretical transmittance results when different numbers of lenses with uniform polarization angles are inserted between two polarizers with a polarization angle of 45 degrees based on Malus's law.

[0079]

[0080]

[0081] Table 1

[0082] Number of polarizing lenses inserted Polarization angle Single piece transmittance Overall light transmittance 0 45 0.5 0.5 1 22.5000 0.85355 0.72855 2 15.0000 0.93301 0.81220 3 11.2500 0.96193 0.85623 4 9.0000 0.97552 0.88349 5 7.5000 0.98296 0.90203 6 6.4286 0.98746 0.91548 7 5.6250 0.99039 0.92568 8 5.0000 0.99240 0.93368 9 4.5000 0.99384 0.94012 10 4.0909 0.99491 0.94542 11 3.7500 0.99572 0.94986 12 3.4615 0.99635 0.95363

[0083] Table 2

[0084] It can be seen from Table 1 and Table 2 that inserting an additional polarizer at a certain angle between two polarizers can significantly improve the overall transmittance of the two polarizers.

[0085] In the present application, the polarized lens 2 can be arranged in a multi-layer structure, and the polarization angles of two adjacent layers are equal. For example, three layers are arranged based on the polarization angle position of the projection, which are 22.5°, 45°, and 67.5° respectively, thereby ensuring that the projected image can still be seen very clearly when using the polarized filter of the present application.

[0086] Example 3

[0087] Reference Figure 1-Figure 6 .

[0088] The locking mechanism 4 includes a locking block 41 slidably connected to the loading component 32 and a second elastic member 42 fixedly connected to the loading component 32;

[0089] There are two locking pressure blocks 41 symmetrically arranged, respectively abutting against the squeezing rollers 31 on both sides of the loading component 32;

[0090] The locking block 41 slides toward or away from the squeezing roller 31; the second elastic member 42 applies a force on the locking block 41 toward the squeezing roller 31;

[0091] The wall surface of the locking block 41 abutting against the squeezing roller 31 is a locking surface 411 , and the locking surface 411 is provided with a rubber layer.

[0092] When the user's polarized lens 2 rotates to a corresponding angle, the polarized lens 2 should maintain this angle. However, the present application is previously placed inside a vehicle, and vibrations will continue to be generated during driving of the car. Long-term vibrations can easily gradually cause the polarized lens 2 to deviate from the original angle, so that re-calibration is required when the polarized lens of the present application is needed. This is not only troublesome, but the vehicle must be stopped during driving to perform calibration. For this reason, a locking mechanism 4 is added in the present embodiment to ensure that the polarized lens 2 will not be deflected due to vibration.

[0093] Specifically, the locking mechanism 4 includes a locking block 41 and a second elastic member 42; wherein the locking block 41 is slidably connected to the loading component 32; one end of the second elastic member 42 is fixed to the loading component 32, and the other end abuts against the locking block 41, so that the locking block 41 presses the squeezing roller 31, and at the same time, the wall surface of the squeezing roller 31 pressed by the locking block 41 is a locking surface 411, and the locking surface 411 is provided with a rubber layer. The circumferential wall surface of the squeezing roller 31 is also made of rubber, and the friction coefficient of rubber is very high. It is difficult for two rubber walls to move relative to each other when squeezed together. At the same time, rubber has a good shock-absorbing effect and can absorb the vibration of the vehicle, thereby preventing the polarized lens 2 from being deflected due to the vibration of the vehicle.

[0094] Furthermore, the squeezing roller 31 is a cylinder. If the locking surface 411 is only a plane, then the two are close to line contact when they are in contact, and the contact area is very small. The magnitude of the friction force is positively correlated with the size of the contact area. Therefore, if the contact area is too small, it is easy for the locking mechanism 4 to fail to completely lock the polarized lens 2. In some cases of severe vibration, the polarized lens 2 will still become loose, and it cannot increase the force of the second elastic member 42. If the second elastic member 42 is too hard, it is easy for the user to find it difficult to release the locking mechanism 4 before debugging.

[0095] To this end, in this embodiment, the size of the locking surface 411 is first increased so that it can abut against multiple squeezing rollers 31 at the same time, and then a plurality of locking grooves 4111 are set on the locking surface 411, and each locking groove 4111 corresponds to a squeezing roller 31, and the wall surface of the locking groove 4111 is a semicircular arc surface, which fits the circumferential wall surface of the squeezing roller 31, and the squeezing roller 31 abuts against the locking groove 4111. The wall surface in the locking groove 4111 is still a part of the locking surface 411, and therefore also has a rubber layer. The rubber layer in the locking groove 4111 wraps the squeezing roller 31, and the rubber layer of the entire arc surface is in contact with the squeezing roller 31, and the contact area is much larger than the linear contact of the plane. Therefore, the locking effect of the locking mechanism 4 can be increased without increasing the elastic force of the second elastic member 42, so that the polarizer of the present application can remain stable under harsher conditions.

[0096] Example 4

[0097] Reference Figure 1-Figure 6 .

[0098] It also includes an unlocking abutment portion 51 and a driving screw 52;

[0099] The unlocking abutment portion 51 is slidably connected to the loading component 32; the driving screw 52 is rotationally connected to the loading component 32, and the axis of the driving screw 52 is parallel to the axis of the polarized lens 2; the driving screw 52 and the unlocking abutment portion 51 are threadedly connected;

[0100] The unlocking abutment portion 51 has an abutment slope A412, and the locking pressure block 41 has an abutment slope B511; the abutment slope A412 abuts against the abutment slope, converting part of the force in the axial direction into a force in the height direction to overcome the force of the second elastic member 42;

[0101] The axis direction is the axis direction of the polarized lens 2 , and the height direction is the height direction of the polarized lens 2 .

[0102] In the structure of Example 2, no separate unlocking mechanism is provided, so one hand is required to keep the locking abutment block lifted to continuously overcome the elastic force of the second elastic member 42 before the polarizing lens 2 can be rotated with the other hand. This makes it more laborious for the user to perform the calibration operation and makes it impossible for the user to rotate the polarizing lens 2 calmly.

[0103] In this regard, the present embodiment provides an unlocking mechanism that is easy to use, including an unlocking abutment portion 51 and a driving screw 52 .

[0104] The unlocking abutment 51 is slidably connected to the loading component 32 , the driving screw 52 is rotationally connected to the loading component 32 , and the axis of the driving screw 52 is parallel to the axis of the polarizing lens 2 , and the unlocking abutment 51 and the driving screw 52 are threadedly connected.

[0105] The unlocking abutment portion 51 and the locking pressure block 41 respectively have an abutment inclined surface A412 and an abutment inclined surface B511 , which cooperate with each other to convert the axial force of the rotating driving screw 52 into a radial force, thereby lifting the locking pressure block 41 away from the squeezing roller 31 .

[0106] In order to make the locking block 41 away from the squeezing roller 31, the second elastic member 42 must be deformed more, so the second elastic member 42 will generate a greater elastic force. In this application, the unlocking abutment 51 and the driving screw 52 are threadedly connected. The threaded connection converts the rotational force into an axial force. This is a labor-saving and distance-consuming transmission method. Therefore, it is very labor-saving for the user to lift the locking block 41, and the user does not need to turn the driving screw 52 many times. This is because the locking block 41 only needs to be lifted by a distance of about 2mm, so that the rubber layer of the locking block 41 and the rubber outer wall of the squeezing roller 31 do not contact. In addition, the thread has a certain self-locking property, so it will not rotate due to the axial force of the unlocking abutment 51. Therefore, the unlocking abutment 51 can be fixed at a certain axial position. After the unlocking abutment 51 supports the locking block 41, it does not need to fix the driving screw 52 to keep supporting the unlocking block. Therefore, the user can easily unlock the squeezing roller 31 and then adjust the angle of the polarized lens 2.

[0107] Furthermore, the driving screw 52 is configured as a double-headed screw, and the threads at both ends are rotated in opposite directions; two unlocking abutment portions 51 are provided, which are respectively screwed to the two threads of the driving screw 52; the driving screw 52 is rotated, and the two unlocking abutment portions 51 approach each other. The corresponding two unlocking abutment portions 51 will abut the two locking blocks 41, and the two unlocking abutment portions 51 approach each other, thereby applying a clamping force, and the axial movement directions of the two unlocking abutment portions 51 are opposite, and can offset each other, thereby reducing the force on the bearing position where the driving screw 52 is rotatably connected to the loading component 32, and preventing the driving screw 52 from loosening and being damaged due to excessive screwing of the driving screw 52 by the user.

[0108] Example 5

[0109] Reference Figure 1-Figure 6 .

[0110] It includes an articulated seat 11 fixedly arranged on the base 1, and a first articulated shaft 12 articulated to the articulated seat 11;

[0111] The first hinge shaft 12 is fixedly connected to the loading component 32, driving the loading component 32 to flip;

[0112] The first hinge shaft 12 is provided with a driving motor 13;

[0113] And a controller for controlling the drive motor 13.

[0114] Polarized sunglasses are not a necessity for driving. In most cases, it does not affect driving if the driver does not wear polarized sunglasses. However, when observing the projected image through the polarized lens 2 of the present application without polarized sunglasses, the brightness of the image will be weakened, just like the head-up display with a polarization angle of 45 degrees in the prior art.

[0115] Therefore, in most driving situations where polarized sunglasses are not required, the blocking of the polarized lens 2 of the present application should be eliminated, so that the driver can view the projected image and road conditions more easily. Although the structure of rotating the polarized lens 2 to a horizontal angle is simpler, it is not convenient to use. It needs to be unlocked first, and it needs to be unlocked and rotated again when it is used again.

[0116] In this regard, the present embodiment is provided with a flipping mechanism, and when the polarized sunglasses are not needed, the polarized lens 2 of the present application can be directly laid down. The specific flipping mechanism includes an articulated seat 11 fixedly arranged on the base 1, and a first articulated shaft 12 articulated with the articulated seat 11; the first articulated shaft 12 is fixedly connected to the loading part 32, and the first articulated shaft 12 is provided with a driving motor 13. The driving motor 13 is configured as a stepping motor for rotating the first articulated shaft 12. The stepping motor can rotate to a certain angle and remain fixed, so with a simple controller, the user can directly click the switch to automatically lay the polarized lens 2 flat or erect it, and even the controller can be configured with a Bluetooth module to connect to the car and control it by voice. And through motor control, there is no need to directly touch the polarized lens 2 with your hands, which avoids stains affecting the transparency of the polarized lens 2.

[0117] Example 6

[0118] Reference Figure 2 .

[0119] The loading component 32 is connected to a dust cover 61 via a second hinge shaft 62, and the loading component 32 is provided with a shifting surface 63;

[0120] The shifting surface 63 supports the dust cover 61 so that the end surface of the dust cover 61 forms an angle a with the end surface of the polarized lens 2, 90°≥a≥85°;

[0121] The second hinge shaft 62 has damping to slow down the turning of the dust cover 61 .

[0122] The polarized lens 2 is placed horizontally for a long time and is in a completely exposed state. Dust in the car can easily fall into the polarized lens 2. Obviously, the polarized lens 2 of the present application is fixed in the car and cannot be wiped as easily as wiping glasses. In addition, the driver's own polarized sunglasses are usually not placed directly on the console when not in use, but are placed in a cabinet or bag to avoid dust.

[0123] In this regard, the present application sets a dust cover 61, which prevents dust from falling on the horizontally placed polarized lens 2. The dust cover 61 needs to avoid blocking the polarized lens 2 when the polarized lens 2 enters a vertical state. Buckling the dust cover 61 on the polarized lens 2 alone requires manual operation, and it is very troublesome to remove the dust cover 61 alone after flipping the polarized lens 2.

[0124] Specifically, in this embodiment, the loading component 32 is provided with a toggle surface 63, and the dust cover 61 is hinged to the loading component 32 via the second hinge shaft 62. The loading component 32 is fixedly connected to the first hinge shaft 12, so when the driving motor 13 rotates the first hinge shaft 12, the loading component 32 will flip, so that the toggle surface 63 can toggle the dust cover 61 to flip together.

[0125] It can be understood that the toggle surface 63 needs to support the dust cover 61 when the polarized lens 2 is in a vertical state in order to achieve the action of covering the dust cover 61. When the polarized lens 2 is in the process of moving from a horizontal state to a vertical state, the polarized lens 2 itself can serve as the toggle surface 63 to toggle the dust cover 61.

[0126] In this embodiment, when the toggle surface 63 supports the dust cover 61, the end face of the dust cover 61 forms an angle a with the end face of the polarizer, 90°≥a≥85°, and the polarizer 2 flips about 90° (actually greater than 90°, because the top surface of the console of most cars is an inclined surface, and the horizontal state refers to the state in which the polarizer 2 is roughly parallel to the top surface of the console of the car). The dust cover 61 will also flip more than 90 degrees, and at this time, the center of gravity of the dust cover 61 is biased to one side of the polarizer 2, and the dust cover 61 will naturally fall toward the polarizer 2. When the polarizer 2 flips to the vertical state, the polarizer 2 can push the dust cover 61 to flip together. When the polarizer 2 is in the vertical state, the dust cover 61 may not directly fall toward the other side. At this time, the drive motor 13 can be controlled to continue to flip over the angle at which the polarizer 2 is in the vertical state, so that the dust cover 61 falls and then reverses to the angle that makes the polarizer 2 vertical. This process can be carried out by presetting the motion path in the controller, and the user can start it by clicking.

[0127] Example 7

[0128] Reference Figure 7 .

[0129] A vehicle-mounted head-up display comprises the auxiliary polarizing lens described in any one of the above embodiments.

[0130] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "top", "bottom", "inside", "outside", "inner side", "outer side" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Among them, "inside" refers to an internal or enclosed area or space. "Periphery" refers to the area surrounding a specific component or a specific area.

[0131] In the description of the embodiments of the present invention, the terms "first", "second", "third", and "fourth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", "third", and "fourth" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0132] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", and "assemble" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0133] In the description of the embodiments of the present invention, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0134] In the description of the embodiments of the present invention, it is to be understood that "-" and "~" represent the range between two values, and the range includes the endpoints. For example: "AB" represents a range greater than or equal to A and less than or equal to B. "A~B" represents a range greater than or equal to A and less than or equal to B.

[0135] In the description of the embodiments of the present invention, the term "and / or" herein is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " herein generally indicates that the associated objects before and after are in an "or" relationship.

[0136] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary polarizing lens for a vehicle head-up display, characterized in that: It includes a base, which is used to be arranged in a sight path, and the sight path is a light propagation path between the driver and the projection screen; A polarized lens, wherein the polarized lens is a circular lens; An adjustment mechanism, the adjustment mechanism comprising: a loading component connected to the base, the polarized lens being rotatably connected to the loading component; and a plurality of squeezing rollers arranged on a side wall of the loading component; The squeezing roller clamps the polarized lens so that the polarized lens is in a vertical position and the polarized lens is rotatably connected to the loading component.

2. The auxiliary polarizing lens for a vehicle head-up display according to claim 1, characterized in that: A circle of wedge-shaped protrusions is arranged on the edge of the polarized lens, and the wedge-shaped protrusions protrude toward both ends of the polarized lens in the axial direction, and the inner wall surface of the wedge-shaped protrusions forms a mounting slope, and the protruding mounting slopes at both ends are symmetrical to each other; The adjustment mechanism further includes a plurality of squeezing rollers disposed on the side wall of the loading component; The squeezing roller squeezes the installation slope, and the loading component supports the circumferential wall surface of the polarized lens; The squeezing roller only clamps a portion of the polarized lens within a distance L1 from the bottom surface of the base, 6cm>L1>2cm.

3. The auxiliary polarizing lens for a vehicle head-up display according to claim 2, characterized in that: A support assembly is provided at the bottom of the loading component, and the support assembly includes a support frame and a plurality of support rollers rotatably connected to the support frame, and the plurality of support rollers are in contact with the circumferential wall surface of the polarized lens; Wherein, the support frame and the bottom surface of the loading component are provided with a first elastic member, and the first elastic member applies a force on the support frame toward the polarized lens.

4. The auxiliary polarizing lens for a vehicle head-up display according to claim 3, characterized in that: The polarized lenses are stacked in multiple layers, and the polarization angles of the polarized lenses in each layer are equal.

5. The auxiliary polarizing lens for a vehicle head-up display according to claim 4, characterized in that: It also includes a locking mechanism, which includes a locking pressure block slidably connected to the loading component and a second elastic member fixedly connected to the loading component; There are two locking pressure blocks symmetrically arranged, respectively abutting against the squeezing rollers on both sides of the loading component; The locking block slides toward or away from the squeezing roller; the second elastic member applies a force toward the squeezing roller to the locking block; The wall surface of the locking pressure block abutting against the squeezing roller is a locking surface, and the locking surface is provided with a rubber layer.

6. The auxiliary polarizing lens for a vehicle head-up display according to claim 5, characterized in that: The locking surface at least abuts against a plurality of the squeezing rollers; Wherein, the locking surface is provided with a plurality of locking grooves, which respectively correspond to the plurality of squeezing rollers abutted by the locking surface; The locking groove passes through the locking surface in its length direction, and is parallel to the axis of the extrusion roller; the wall surface of the locking groove is a semicircular arc surface that fits the circumferential wall surface of the extrusion roller.

7. The auxiliary polarizing lens for a vehicle head-up display according to claim 6, characterized in that: Also included is an unlocking abutment and a drive screw; The unlocking abutment is slidably connected to the loading component; the driving screw is rotatably connected to the loading component, and the axis of the driving screw is parallel to the axis of the polarized lens; the driving screw is threadedly connected to the unlocking abutment; The unlocking abutment portion has an abutment slope A, and the locking pressure block has an abutment slope B; the abutment slope A and the abutment slope abut against each other, converting part of the force in the axial direction into a force in the height direction, so that the locking pressure block is away from the squeezing roller; The axis direction is the axis direction of the polarized lens, and the height direction is the height direction of the polarized lens.

8. The auxiliary polarizing lens for a vehicle head-up display according to claim 7, characterized in that: The driving screw is a double-ended screw, with the threads at both ends rotating in opposite directions; The unlocking abutment parts have two parts, which are respectively screwed to two sections of threads of the driving screw; The driving screw is rotated so that the two unlocking abutting portions approach each other.

9. The auxiliary polarizing lens for a vehicle head-up display according to claim 8, characterized in that: It includes an articulated seat fixedly arranged on the base, and a first articulated shaft articulated with the articulated seat; The first hinge shaft is fixedly connected to the loading component to drive the loading component to flip; The first articulated shaft is provided with a driving motor; and a controller for controlling the drive motor.

10. A vehicle-mounted head-up display, characterized in that: An auxiliary polarizing mirror for a vehicle-mounted head-up display comprising the method described in any one of claims 1 to 9.

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