Optical display system

Abstract

An optical display system. It includes a system bottom shell, a rotating mirror assembly, a motor assembly, a TFT optical module, a light guide cover, a plane mirror assembly, a car windshield, and a human eye position. The TFT optical module is installed on the system bottom shell, the light guide cover is sleeved on the TFT optical module, the plane mirror assembly is installed above the light guide cover, and the rotating mirror assembly is installed on one side of the plane mirror assembly. The transmission mechanism of the optical display system adopts a worm gear and is provided with a brake pad to ensure good rotation stability and low torque. At the same time, the rotating mirror mechanism adopts a honeycomb structure, and the rotating mirror and the base are firmly combined and have good shock resistance. At the same time, the motor assembly adopts a shaft end adopts a rotating assembly ladder structure to ensure high rotation accuracy. At the same time, the TFT assembly structure has good shock resistance and uniform light emission.

Description

Technical Field

[0001] The present invention relates to a vehicle-mounted head-up display device, and in particular to an optical display system in which a transmission mechanism adopts a worm gear and is provided with a brake pad so as to have good rotation stability and small torque, a rotating mirror mechanism adopts a honeycomb structure and the rotating mirror and a base are firmly combined and have good shock resistance, a motor component adopts a shaft end adopts a rotating assembly ladder structure so as to have high rotation accuracy, and a TFT component structure has good shock resistance and uniform light emission. Background Art

[0002] With the development of the automobile industry, assisted driving technology is changing with each passing day, among which the main one is the use of vehicle-mounted head-up display devices. The role of vehicle-mounted head-up display devices is to replace the instrument and display various information needed to be understood during driving at an angle and method that is convenient for the driver to view, thereby facilitating driving and improving driving comfort.

[0003] The shortcomings of existing vehicle head-up display devices are:

[0004] 1. As vehicles will experience vibrations and shakes of varying magnitudes while driving, the rotating devices of existing vehicle-mounted head-up display devices lack a shock-absorbing mechanism or have poor shock-absorbing effects, especially the loose connection of the transmission components and large gaps, which causes the rotating mirror to shake violently when the vehicle vibrates and shakes, thereby causing the displayed image to shake and shift, affecting the display of the image. At the same time, the transmission mechanism cannot be self-locking, and the vibration and shaking of the vehicle will drive the rotating mirror to rotate, resulting in poor shock resistance of the existing vehicle-mounted head-up display device and unsatisfactory display effects;

[0005] 2. The existing rotating device has a large shaft contact surface, large torque, and large friction, which increases the motor power and reduces the motor operating efficiency;

[0006] 3. The plane mirror is easy to install, and generally no anti-vibration treatment is done. The verticality of the plane and the stability of the bonding cannot be guaranteed. The anti-vibration performance is poor, and the lens is prone to tilt and rotation, resulting in deflection and failure of the optical path.

[0007] 4. The rotating mirror has a large area, and its curvature and surface shape are easily affected by the deformation of the installation bottom shell, and the dimensional stability of the bottom shell is poor;

[0008] 5. If the parts are not treated with surface coating, such as the bottom shell and bracket, the light beam is likely to produce diffuse reflection inside the equipment, affecting the transmission of the light beam signal. Summary of the invention

[0009] The purpose of the present invention is to solve the above-mentioned technical problems and to provide an optical display system, in which the transmission mechanism adopts a worm gear and is provided with a brake pad to ensure good rotation stability and small torque, while the rotating mirror mechanism adopts a honeycomb structure and the rotating mirror and the base are firmly combined and have good shock resistance, while the motor assembly adopts a rotating assembly step structure at the shaft end to ensure high rotation accuracy, and the TFT assembly structure has good shock resistance and uniform light emission.

[0010] In order to solve the above-mentioned prior art problems, the technical solution of the present invention is:

[0011] The present invention discloses an optical display system, which is a vehicle-mounted head-up display optical system, and comprises a system bottom shell, a rotating mirror assembly, a motor assembly, a TFT optical module, a light guide cover, a plane mirror assembly, a car windshield, and a human eye position. The TFT optical module is mounted on the system bottom shell, the light guide cover is sleeved on the TFT optical module, the plane mirror assembly is mounted above the light guide cover, and the rotating mirror assembly is mounted on one side of the plane mirror assembly. Light from a light source is emitted by the TFT optical module, reaches the plane mirror assembly via the light guide cover, is transferred from the plane mirror assembly to the rotating mirror assembly, and then is transferred to the car windshield. Finally, at the human eye position, a virtual image in front of the car windshield is seen through the reverse extension line of the light.

[0012] As an improvement, the system bottom shell includes two side walls and a bottom plate below;

[0013] As an improvement, the rotating mirror assembly includes a lens bottom shell, a plurality of shock-absorbing pads, a rotating mirror, and a face cover, the outer side surface of the lens bottom shell is formed into a honeycomb structure, the inner side surface of the lens bottom shell is formed into an arc surface matching the shape of the rotating mirror, and a plurality of convex points are formed on the arc surface, the inner side surface of the face cover is formed with a rectangular groove matching the shape of the rotating mirror, and a plurality of small bone positions, the rotating mirror is clamped between the face cover and the lens bottom shell, one end surface of the rotating mirror is embedded in the rectangular groove of the face cover, a plurality of small bone positions of the face cover are point-contacted and limited with the rotating mirror, the other end surface of the rotating mirror is embedded in the inner side of the lens bottom shell, and the rotating mirror is point-contacted with a plurality of convex points on the inner side surface of the lens bottom shell, a plurality of the shock-absorbing pads are respectively clamped between the convex points and the rotating mirror, the lens bottom shell is also formed with a plurality of limiting bones abutting against the face cover, a plurality of snap structures are arranged between the face cover and the lens bottom shell, and the alignment and locking between the face cover, the rotating mirror and the lens bottom shell are achieved through the snap structures;

[0014] As an improvement, the two sides of the lens bottom shell are also provided with rotating shafts, the rotating shafts are spherical structures, and the two side walls of the system bottom shell are also respectively formed with shaft holes that match the rotating shafts. The rotating shafts are rotatably assembled in the shaft holes, and the shaft holes are inner prism structures that match the spherical structures of the rotating shafts, so that the contact surface between the rotating shaft of the lens bottom shell and the system bottom shell is minimized, thereby reducing friction;

[0015] As an improvement, a turbine is provided at the lower end of the lens bottom shell;

[0016] As an improvement, the rotating mirror assembly also includes a transmission mechanism, which includes a primary gear, a secondary gear ring, a worm, a worm shaft, a brake pad, and a gear box. The gear box includes a cavity structure for embedding a gear set, and a disc portion arranged on one side of the cavity structure. The brake pad includes a sheet-like body on the right side and a spring sheet at the lower end. The right end of the worm shaft is fixedly connected to the sheet-like body of the brake pad, and the left end is fixed to the left side of the gear box. The worm is rotatably sleeved on the worm shaft and the right end of the worm is fixedly connected to the left end of the secondary gear ring, and the worm is meshed with a turbine at the lower end of the lens base. The primary gear is arranged in the secondary gear ring and meshed with the secondary gear ring. The sheet-like body of the brake pad is embedded in the disc portion of the gear box.

[0017] As an improvement, a rotating shaft is respectively arranged on the left and right sides of the gear box disc portion, a sleeve hole corresponding to the rotating shaft is formed on the bottom plate of the system bottom shell, the shaft end of the rotating shaft of the gear box is a waist-shaped structure with two straight sides, the sleeve hole is formed with an opening, the opening of the sleeve hole matches the width of the waist-shaped structure of the shaft end of the rotating shaft, the rotating shaft enters the opening of the sleeve hole through the waist-shaped structure of the shaft end and is embedded in the sleeve hole, and the transmission mechanism is assembled on the system bottom shell through the rotating shaft of the gear box;

[0018] As an improvement, the motor assembly includes a motor, a motor bracket, and a motor bracket. The motor is provided with a connecting ear with a screw hole. The motor bracket includes a columnar portion arranged at the upper and lower parts and formed with a screw hole. The motor is fixed to the motor bracket by bolts arranged at the motor connecting ear and the columnar portion of the motor bracket. The motor bracket is a frame-shaped body and is clamped between the motor and the motor bracket, and the motor bracket is clamped between the columnar portion of the motor bracket. The left and right sides of the motor bracket are respectively formed with screw holes, and the upper left and right sides of the gear box disc portion are respectively formed with screw holes corresponding to the left and right screw holes of the motor bracket. Bolts are set to fix the motor bracket on the disc part of the gear box. The motor includes an output shaft and a primary gear is fixed on the output shaft. The motor drives the primary gear, the secondary gear ring, the worm and the turbine to rotate in sequence, and realizes three-stage reduction. Since the rotating shaft of the gear box is rotatably assembled in the shaft sleeve hole of the system bottom shell, the rotational cooperation between the worm and the turbine is realized. The worm drives the turbine to rotate, and drives the lens bottom shell, the rotating mirror and the face cover to rotate around the shaft hole of the system bottom shell through the rotating shafts on both sides of the lens bottom shell. The spring sheet of the brake pad abuts against the bottom plate of the system bottom shell, and the reaction force of the spring sheet acts on the worm shaft so that the worm and the turbine are always tightly meshed.

[0019] As an improvement, the TFT optical module includes a lighting panel bottom shell, a lighting panel, an optical cup, a diffusion sheet, a TFT lower cover, a TFT, and a TFT surface cover. The TFT lower cover is a cavity structure. The TFT surface cover is embedded on the right side of the TFT lower cover cavity structure. The TFT is sandwiched between the TFT lower cover and the TFT surface cover. The diffusion sheet, the optical cup, the lighting panel, and the lighting panel bottom shell are sequentially embedded on the left side of the cavity structure of the TFT lower cover. The lighting panel is provided with a plurality of LED lamp beads arranged in a rectangular shape. The optical cup is a lattice structure. The lattice structure is provided with a plurality of grids corresponding to the LED lamp beads. The diffusion sheet is arranged in affixed to the lattice structure to ensure the flatness of the diffusion sheet. At the same time, the optical cup, the diffusion sheet, and the lighting panel of the lattice structure are provided to make the light source emit light evenly.

[0020] As an improvement, the light guide cover includes an open incident end, a rectangular light tube, and an output end which are arranged in sequence. The light guide cover is arranged on the TFT component mechanism and the open incident end of the light guide cover is arranged above the TFT cover.

[0021] Furthermore, the clearance between the rotating mirror and the bottom shell of the lens is designed to be 0.05mm, the lower tolerance of the rotating mirror size is 0.1mm, and the upper tolerance of the spacing between the limit bones of the bottom shell of the lens is 0.1mm;

[0022] Furthermore, the rotating shafts on both sides of the gearbox disc portion are axially formed into an increasing step structure from the shaft end to the inside;

[0023] Furthermore, below the shaft sleeve hole of the bottom shell of the system is a shaft sleeve hole bracket, and the shaft sleeve hole bracket is provided with a plurality of reinforcing ribs;

[0024] Furthermore, in the TFT optical module, the bottom shell of the lighting panel is a metal bottom shell with good heat dissipation performance, the outer end surface of the metal bottom shell is a heat dissipation fin, and an annular pad is sandwiched between the TFT lower cover and the TFT and between the TFT upper cover and the TFT;

[0025] Furthermore, in the TFT optical module, the inner walls of the TFT lower cover, the TFT upper cover and the light guide cover are respectively coated with a matte coating for reducing diffuse reflection of light, and the TFT further includes a data line at the lower end.

[0026] The present invention provides an optical display system, which has the following beneficial effects:

[0027] 1. The transmission mechanism of the optical display system adopts a worm gear and is provided with a brake pad to ensure good rotation stability and low torque;

[0028] 2. The rotating mirror mechanism adopts a honeycomb structure, and the rotating mirror and the base are firmly combined and have good shock resistance;

[0029] 3. At the same time, the motor assembly adopts a rotating assembly ladder structure at the shaft end to achieve high rotation accuracy;

[0030] 4. At the same time, the TFT component structure has good shock resistance and uniform light emission. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 , is a component disassembly diagram of an optical display system of the present invention;

[0032] Figure 2 ,for Figure 1 The three-dimensional view of the system bottom case of the embodiment shown Figure 1 ;

[0033] Figure 3 ,for Figure 1 An exploded view of the rotating mirror assembly of the illustrated embodiment;

[0034] Figure 4 ,for Figure 1 a rear view of the lens base of the illustrated embodiment;

[0035] Figure 5 ,for Figure 1 A front view of the lens base of the illustrated embodiment;

[0036] Figure 6 ,for Figure 1 A schematic diagram of the embodiment shown in which the rotating mirror assembly is installed into the system bottom housing;

[0037] Figure 7 ,for Figure 1 An exploded view of the transmission mechanism and the motor assembly in the illustrated embodiment;

[0038] Figure 8 ,for Figure 1 A top view of the transmission mechanism and motor assembly in the illustrated embodiment;

[0039] Fig. 9 ,for Figure 1 A right side view of the transmission mechanism and motor assembly in the illustrated embodiment;

[0040] Fig.10 ,for Figure 1 A front view of the transmission mechanism and motor assembly in the illustrated embodiment;

[0041] Fig.11 ,for Figure 1 A structural diagram of the gearbox in the illustrated embodiment;

[0042] Fig.12 ,for Figure 1 The three-dimensional view of the system bottom case in the embodiment shown Figure 2 ;

[0043] Fig.13 ,for Figure 1A three-dimensional view of the transmission mechanism and the motor assembly after being installed into the system bottom shell in the illustrated embodiment;

[0044] Fig.14 ,for Figure 1 A disassembled diagram of the TFT optical module in the illustrated embodiment;

[0045] Fig.15 ,for Figure 1 A three-dimensional diagram of a TFT optical module in the illustrated embodiment;

[0046] Fig.16 ,for Figure 1 A three-dimensional view of the TFT optical module in the illustrated embodiment after being installed into the system bottom housing;

[0047] Fig.17 ,for Figure 1 A schematic diagram of the installation of the TFT optical module and the light guide cover in the illustrated embodiment. DETAILED DESCRIPTION

[0048] The present invention will be further described below in conjunction with embodiments:

[0049] Example:

[0050] like Figure 1 to Figure 17 The present invention discloses an optical display system, which is a vehicle-mounted head-up display optical system, comprising a system bottom shell 1, a rotating mirror assembly 2, a motor assembly 3, a TFT optical module 4, a light guide cover 5, a plane mirror assembly 6, a car windshield, and a human eye position. The TFT optical module is installed on the system bottom shell, a light guide cover is set on the TFT optical module, the plane mirror assembly is installed above the light guide cover, and the rotating mirror assembly is installed on one side of the plane mirror assembly. Light from the light source is emitted by the TFT optical module, reaches the plane mirror assembly via the light guide cover, is transferred from the plane mirror assembly to the rotating mirror assembly, and then is transmitted to the car windshield. Finally, at the human eye position, a virtual image in front of the car windshield is seen through the reverse extension line of the light.

[0051] As an improvement, the system bottom shell 1 includes two side walls 11 and a bottom plate 12 below;

[0052] As an improvement, the rotating mirror assembly 2 includes a lens bottom shell 21, a plurality of shock-absorbing pads 22, a rotating mirror 23, and a face cover 24. The outer side surface of the lens bottom shell 21 is formed into a honeycomb structure 21a, and the inner side surface of the lens bottom shell is formed into an arc surface matching the shape of the rotating mirror. A plurality of convex points 21b are formed on the arc surface. The inner side surface of the face cover is formed with a rectangular groove matching the shape of the rotating mirror, and a plurality of small bone positions. The rotating mirror is clamped between the face cover and the lens bottom shell, and one end surface of the rotating mirror is embedded in the face cover. In the rectangular groove, multiple small bone positions of the face cover are in point contact with the rotating mirror for limiting position, the other end surface of the rotating mirror is embedded in the inner side of the lens bottom shell, and the rotating mirror is in point contact with multiple convex points on the inner side of the lens bottom shell, and multiple shock-absorbing pads 22 are respectively sandwiched between the convex points 21b and the rotating mirror 23, and the lens bottom shell is also formed with multiple limiting bones abutting against the face cover, and multiple buckle structures are arranged between the face cover and the lens bottom shell, and the alignment and locking between the face cover, the rotating mirror and the lens bottom shell are achieved through the buckle structure;

[0053] As an improvement, the two sides of the lens bottom shell 21 are also provided with a rotating shaft 21c, the rotating shaft is a spherical structure, and the two side walls 11 of the system bottom shell 1 are also respectively formed with an axis hole 11a matched with the rotating shaft, the rotating shaft is rotatably assembled in the axis hole, and the axis hole is an inner prism structure matching the spherical structure of the rotating shaft, so that the contact surface between the rotating shaft of the lens bottom shell and the system bottom shell is minimized, thereby reducing friction;

[0054] As an improvement, a turbine 21d is provided at the lower end of the lens bottom shell 21;

[0055] As an improvement, the rotating mirror assembly 2 also includes a transmission mechanism 7, which includes a primary gear 71, a secondary gear ring 72, a worm 73, a worm shaft 74, a brake pad 75, and a gear box 76. The gear box 76 includes a cavity structure 76a for embedding the gear set, and a disc portion 76b arranged on one side of the cavity structure. The brake pad 75 includes a lamellar body 75a on the right side and a spring piece 75b at the lower end. The right end of the worm shaft 74 is fixedly connected to the lamellar body of the brake pad, and the left end is fixed to the left side of the gear box. The worm is rotatably sleeved on the worm shaft and the right end of the worm is fixedly connected to the left end of the secondary gear ring, and the worm is meshed with the turbine at the lower end of the lens base. The primary gear is arranged in the secondary gear ring and meshed with the secondary gear ring. The lamellar body of the brake pad is embedded in the disc portion of the gear box.

[0056] A rotating shaft 76c is also provided on the left and right sides of the gearbox disc portion 76b, respectively. A shaft sleeve hole 12a corresponding to the rotating shaft is formed on the bottom plate 12 of the system bottom shell 1. The shaft end of the rotating shaft 76c of the gearbox is a waist-shaped structure with two straight sides. The shaft sleeve hole 12a is formed with an opening. The opening of the shaft sleeve hole matches the width of the waist-shaped structure of the shaft end of the rotating shaft. The rotating shaft enters the opening of the shaft sleeve hole through the waist-shaped structure of the shaft end and is embedded in the shaft sleeve hole. The transmission mechanism is assembled on the system bottom shell through the rotating shaft of the gearbox;

[0057] As an improvement, the motor assembly 3 includes a motor 31, a motor bracket 32, and a motor bracket 33. The motor 31 is provided with a connecting ear 31a with a screw hole. The motor bracket 33 includes a cylindrical portion 33a arranged at the upper and lower parts and formed with a screw hole. The motor is fixed to the motor bracket by arranging bolts between the motor connecting ear and the cylindrical portion of the motor bracket. The motor bracket is a frame-shaped body and is clamped between the motor and the motor bracket, and the motor bracket is clamped between the cylindrical portion of the motor bracket. The left and right sides of the motor bracket 33 are respectively formed with screw holes 33b, and the upper left and right sides of the disc portion 76b of the gear box 76 are respectively formed with screw holes 76d corresponding to the screw holes on the left and right sides of the motor bracket. Bolts are arranged in the screw holes on the left and right sides of the motor bracket to fix the motor bracket to the disc part of the gear box. The motor includes an output shaft and a primary gear is fixed on the output shaft. The motor drives the primary gear, the secondary gear ring, the worm and the turbine to rotate in sequence, and realizes three-stage reduction. Since the rotating shafts on both sides of the gear box are rotatably assembled in the shaft hole of the system bottom shell, the rotational cooperation between the worm and the turbine is realized. The worm drives the turbine to rotate, and drives the lens bottom shell, the rotating mirror and the face cover to rotate around the shaft hole of the system bottom shell through the rotating shafts on both sides of the lens bottom shell. The spring piece 75b of the brake pad 75 abuts against the bottom plate 12 of the system bottom shell 1, and the reaction force of the spring piece acts on the worm shaft so that the worm and the turbine are always tightly meshed.

[0058] As an improvement, the TFT optical module 4 includes a lighting panel bottom shell 41, a lighting panel 42, an optical cup 44, a diffuser 45, a TFT lower cover 46, a TFT47, and a TFT surface cover 48. The TFT lower cover 46 is a cavity structure. The TFT surface cover is embedded on the right side of the TFT lower cover cavity structure. The TFT is sandwiched between the TFT lower cover and the TFT surface cover. The left side of the cavity structure of the TFT lower cover is sequentially embedded with a diffuser, an optical cup, an optical cup seat, a lighting panel, and a lighting panel bottom shell. The lighting panel 42 is provided with a plurality of LED lamp beads 42a arranged in a rectangular shape. The optical cup 44 is a lattice structure. The lattice structure is provided with a plurality of squares 44a corresponding to the LED lamp beads. The diffuser is arranged in affixed to the lattice structure to ensure the flatness of the diffuser. At the same time, the optical cup, the diffuser, and the lighting panel of the lattice structure are provided to make the light source emit light evenly.

[0059] As an improvement, the light guide cover 5 includes an open incident end 51, a rectangular light tube 52, and an output end 53 which are arranged in sequence. The light guide cover is arranged on the TFT component mechanism and the open incident end of the light guide cover is arranged above the TFT cover.

[0060] Furthermore, the clearance between the rotating mirror and the bottom shell of the lens is designed to be 0.05mm, the lower tolerance of the rotating mirror size is 0.1mm, and the upper tolerance of the spacing between the limit bones of the bottom shell of the lens is 0.1mm;

[0061] Furthermore, the rotating shafts 76c on both sides of the gear box disc portion 76b are axially formed into a progressively stepped structure from the shaft end to the inside;

[0062] Furthermore, below the shaft sleeve hole 12a of the system bottom shell 1 is a shaft sleeve hole bracket 12b, and the shaft sleeve hole bracket is provided with a plurality of reinforcing ribs;

[0063] Furthermore, in the TFT optical module 4, the lighting panel bottom shell 41 is a metal bottom shell with good heat dissipation performance, the outer end surface of the metal bottom shell is a heat dissipation fin 41a, and an annular pad is sandwiched between the TFT lower cover and the TFT and between the TFT upper cover and the TFT;

[0064] Furthermore, in the TFT optical module 4, the inner walls of the TFT lower cover, the TFT upper cover and the light guide cover are coated with a matte coating for reducing diffuse reflection of light, and the TFT also includes a data line at the lower end.

[0065] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. An optical display system, wherein the optical display system is a vehicle-mounted head-up display optical system, characterized in that: It includes a system bottom shell, a rotating mirror assembly, a motor assembly, a TFT optical module, a light guide cover, a plane mirror assembly, a car windshield, and a human eye position. The TFT optical module is installed on the system bottom shell, the light guide cover is sleeved on the TFT optical module, the plane mirror assembly is installed above the light guide cover, and the rotating mirror assembly is installed on one side of the plane mirror assembly. Light from the light source is emitted by the TFT optical module, reaches the plane mirror assembly via the light guide cover, is transferred from the plane mirror assembly to the rotating mirror assembly, and then is transmitted to the car windshield. Finally, at the human eye position, a virtual image in front of the car windshield is seen through the reverse extension line of the light. The system bottom shell includes two side walls and a bottom plate below; The rotating mirror assembly includes a lens bottom shell, a plurality of shock-absorbing pads, a rotating mirror, and a face cover. The outer side surface of the lens bottom shell is formed into a honeycomb structure, and the inner side surface of the lens bottom shell is formed into an arc surface matching the shape of the rotating mirror, and a plurality of convex points are formed on the arc surface. The inner side surface of the face cover is formed with a rectangular groove matching the shape of the rotating mirror, and a plurality of small bone positions. The rotating mirror is clamped between the face cover and the lens bottom shell, and one end surface of the rotating mirror is embedded in the rectangular groove of the face cover. The plurality of small bone positions of the face cover are point-contacted and limited with the rotating mirror. The other end surface of the rotating mirror is embedded in the inner side of the lens bottom shell, and the rotating mirror is point-contacted with a plurality of convex points on the inner side surface of the lens bottom shell. The plurality of shock-absorbing pads are respectively clamped between the convex points and the rotating mirror. The lens bottom shell is also formed with a plurality of limiting bones abutting against the face cover. A plurality of snap structures are provided between the face cover and the lens bottom shell, and the alignment and locking between the face cover, the rotating mirror and the lens bottom shell are achieved through the snap structures. The two sides of the lens bottom shell are also provided with rotating shafts, which are spherical structures. The two side walls of the system bottom shell are also respectively formed with shaft holes that match the rotating shafts. The rotating shafts are rotatably assembled in the shaft holes, which are inner prism structures that match the spherical structures of the rotating shafts, so that the contact surface between the rotating shaft of the lens bottom shell and the system bottom shell is minimized, thereby reducing friction; A turbine is disposed at the lower end of the lens bottom shell; The rotating mirror assembly also includes a transmission mechanism, which includes a primary gear, a secondary gear ring, a worm, a worm shaft, a brake pad, and a gear box. The gear box includes a cavity structure for embedding a gear set, and a disc portion arranged on one side of the cavity structure. The brake pad includes a sheet-like body on the right side and a spring sheet at the lower end. The right end of the worm shaft is fixedly connected to the sheet-like body of the brake pad, and the left end is fixed to the left side of the gear box. The worm is rotatably sleeved on the worm shaft and the right end of the worm is fixedly connected to the left end of the secondary gear ring. The worm is meshed with a turbine at the lower end of the lens base. The primary gear is arranged in the secondary gear ring and meshed with the secondary gear ring. The sheet-like body of the brake pad is embedded in the disc portion of the gear box. A rotating shaft is also arranged on the left and right sides of the gear box disc part, respectively. A shaft sleeve hole corresponding to the rotating shaft is formed on the bottom plate of the system bottom shell. The shaft end of the rotating shaft of the gear box is a waist-shaped structure with two straight sides. The shaft sleeve hole is formed with an opening. The opening of the shaft sleeve hole matches the width of the waist-shaped structure of the shaft end of the rotating shaft. The rotating shaft enters the opening of the shaft sleeve hole through the waist-shaped structure of the shaft end and is embedded in the shaft sleeve hole. The transmission mechanism is assembled on the system bottom shell through the rotating shaft of the gear box; The motor assembly includes a motor, a motor bracket, and a motor bracket. The motor is provided with a connecting ear with a screw hole. The motor bracket includes a columnar portion arranged at the upper and lower parts and formed with a screw hole. The motor is fixed to the motor bracket by bolts arranged at the motor connecting ear and the columnar portion of the motor bracket. The motor bracket is a frame-shaped body and is clamped between the motor and the motor bracket, and the motor bracket is clamped between the columnar portion of the motor bracket. The left and right sides of the motor bracket are respectively formed with screw holes, and the upper left and right sides of the gear box disc portion are respectively formed with screw holes corresponding to the left and right screw holes of the motor bracket. By arranging screw holes in the screw holes on the left and right sides of the motor bracket The motor bracket is fixed to the disc part of the gear box by bolts. The motor includes an output shaft and a primary gear is fixed to the output shaft. The motor drives the primary gear, the secondary gear ring, the worm and the turbine to rotate in sequence, and realizes three-stage reduction. Since the rotating shaft of the lens base is rotatably assembled in the axial hole of the system bottom shell, the rotational cooperation between the worm and the turbine is realized. The worm drives the turbine to rotate, and drives the lens bottom shell, the rotating mirror and the face cover to rotate around the axial hole of the system bottom shell through the rotating shafts on both sides of the lens bottom shell. The spring sheet of the brake pad abuts against the bottom plate of the system bottom shell, and the reaction force of the spring sheet acts on the worm shaft so that the worm and the turbine are always tightly meshed. The TFT optical module includes a lighting panel bottom shell, a lighting panel, an optical cup, a diffusion sheet, a TFT lower cover, a TFT, and a TFT surface cover. The TFT lower cover is a cavity structure. The TFT surface cover is embedded on the right side of the TFT lower cover cavity structure. The TFT is sandwiched between the TFT lower cover and the TFT surface cover. The diffusion sheet, the optical cup, the lighting panel, and the lighting panel bottom shell are sequentially embedded on the left side of the TFT lower cover cavity structure. The lighting panel is provided with a plurality of LED lamp beads arranged in a rectangular shape. The optical cup is a lattice structure. The lattice structure is provided with a plurality of grids corresponding to the LED lamp beads. The diffusion sheet is arranged in affixed to the lattice structure to ensure the flatness of the diffusion sheet. The lattice structure optical cup, the diffusion sheet, and the lighting panel are provided at the same time, so that the light source emits light evenly. The light guide cover comprises an open incident end, a rectangular light tube, and an exit end which are arranged in sequence, the light guide cover is arranged on the TFT component mechanism and the open incident end of the light guide cover is arranged above the TFT cover; The clearance between the rotating mirror and the bottom shell of the lens is designed to be 0.05mm, the lower tolerance of the rotating mirror size is 0.1mm, and the upper tolerance of the spacing between the limit bones of the bottom shell of the lens is 0.1mm; The rotating shafts on both sides of the gear box disc portion are axially formed into an increasing step structure from the shaft end to the inside.

2. An optical display system according to claim 1, characterized in that: Below the shaft sleeve hole of the system bottom shell is a shaft sleeve hole bracket, and the shaft sleeve hole bracket is provided with a plurality of reinforcing ribs.

3. An optical display system according to claim 1, characterized in that: In the TFT optical module, the lighting panel bottom shell is a metal bottom shell with good heat dissipation performance, the outer end surface of the metal bottom shell is a heat dissipation fin, and an annular pad is sandwiched between the TFT lower cover and the TFT and between the TFT upper cover and the TFT.

4. An optical display system according to claim 1, characterized in that: In the TFT optical module, the inner walls of the TFT lower cover, the TFT upper cover and the light guide cover are coated with matte coatings for reducing diffuse reflection of light, and the TFT further includes a data line at the lower end.

Images