HUD small-size modularized PGU

Abstract

The utility model discloses an HUD small-size modularized PGU, which comprises an optical cavity, a diffusion sheet installed inside one side of the optical cavity, an LCD screen arranged on one side of the diffusion sheet, a shell installed on one side of the optical cavity, a first optical member installed inside the optical cavity, an optical cavity cover installed on the top of the optical cavity, and a second optical member installed on the other side of the optical cavity. A second optical part is installed in the other side of the light cavity, an LED lamp panel is installed on the other side of the light cavity, and threaded cylinders are fixedly installed at the top and the bottom of the light cavity. The PGU is designed to be a universal module, so that the PGU can be applied to a new project, die sinking parts can be reduced, the development period is shortened, the project cost is reduced, meanwhile, due to the universal module structure, the PGU is few in structure / optical parts, small in size, simple to assemble and low in energy consumption, module preassembling can be carried out before production, and the production efficiency is improved. Preassembling can be performed synchronously during production, so that the production time is shortened, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of HUD, in particular to a small-volume modular PGU of HUD. Background Art

[0002] PGU (picture generation unit) is one of the core components of HUD (head-up display), which is responsible for generating graphics and controlling brightness, while the PGU lens is part of the PGU, responsible for generating and projecting these images. Specifically, the PGU lens will magnify the image generated by the image generation unit through a free-form mirror, and eliminate the distortion caused by the windshield, and then the windshield will magnify it again and eliminate ghosting, and finally reflect the image to the driver's eyes. However, in the prior art, some PGUs need to be redesigned and re-molded according to the different FOVs of each model, which is costly and has a complicated assembly process. At the same time, due to the large number of optical components, energy loss will also be high. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a small-volume modular PGU for HUD, which has the advantages of reducing mold opening and lowering energy consumption.

[0004] The technical solution is a small-volume modular PGU for HUD, comprising an optical cavity, a diffuser is installed inside one side of the optical cavity, an LCD screen is arranged on one side of the diffuser, a shell is also installed on one side of the optical cavity, an optical component 1 is installed inside the optical cavity, an optical cavity cover is installed on the top of the optical cavity, an optical component 2 is installed inside the other side of the optical cavity, an LED light board is installed on the other side of the optical cavity, and threaded cylinders are fixedly installed on the top and bottom of the optical cavity.

[0005] Preferably, a heat sink is fixedly mounted on one side of the LED light board away from the light cavity, and light board mounting holes are provided on the top and bottom of the LED light board. The LED light board can be fixedly mounted on the light cavity by screwing a second screw into the light board mounting hole and the threaded barrel.

[0006] Preferably, a first mounting hole is provided at both ends of the top of the diffuser, a second mounting hole is provided on one side of the optical cavity at a position corresponding to the first mounting hole, and the diffuser is fixedly installed inside one side of the optical cavity by screwing a first screw into the first mounting hole and the second mounting hole.

[0007] Preferably, first guide grooves are formed at both ends of the bottom of the diffusion sheet, and a first guide block matching the first guide grooves is fixedly connected to an inner bottom wall of one side of the optical cavity.

[0008] Preferably, both ends of the top and bottom of the shell are fixedly connected with a first card slot, the top and bottom of the optical cavity are fixedly connected with a first elastic clip, and the shell is fixedly installed on the optical cavity by snapping the first elastic clip into the first card slot.

[0009] Preferably, the inner walls on both the front and rear sides of the optical cavity are provided with second guide grooves, and the optical component is fixedly connected with a second guide block matched with the second guide groove.

[0010] Preferably, the front and back sides of the optical cavity are both fixedly connected with a second elastic buckle, and the front and back sides of the optical cavity cover are both provided with a second card slot matched with the second elastic buckle.

[0011] Preferably, the optical cavity cover is provided with a clearance groove for avoiding the threaded barrel.

[0012] Preferably, the inner walls on both the front and rear sides of the optical cavity are provided with mounting grooves, and the front and back sides of the optical component 2 are provided with mounting blocks matching the mounting grooves.

[0013] Preferably, the top and the bottom of the LED light board are provided with light board mounting holes, and the LED light board can be fixedly mounted on the optical cavity by screwing the second screw into the light board mounting hole and the threaded barrel.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model designs a shell, an LCD screen, a diffuser, an optical cavity, an optical component one, an optical cavity cover, an optical component two, an LED light board and a heat sink into a universal module structure. In this way, when there are multiple PGUs with different FOVs but similar light output angles, since the PGU of the present application is designed as a universal module, the present application can be adapted to new projects, and can reduce the number of mold openings, shorten the development cycle, and reduce project costs. At the same time, due to the universal module structure, the PGU of the present application has fewer structural / optical parts, a small size, simple assembly, and reduced energy consumption, and can be pre-installed before production. The pre-installation can be carried out simultaneously during production, thereby reducing production hours and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is an explosion schematic diagram of the utility model.

[0018] Figure 3 It is a schematic diagram of the shell structure of the utility model.

[0019] Figure 4 It is a structural schematic diagram of a diffusion sheet of the utility model.

[0020] Figure 5 It is a schematic diagram of the optical cavity structure of the utility model.

[0021] Figure 6 It is a structural schematic diagram of the optical cavity cover of the utility model.

[0022] Figure 7 It is a structural schematic diagram of the second optical component of the utility model.

[0023] Figure 8 It is a schematic diagram of the structure of the LED lamp board of the utility model.

[0024] Explanation of the symbols in the schematic diagram:

[0025] 1. Shell; 2. LCD screen; 3. Diffuser; 4. Optical cavity; 5. Optical component 1; 6. Optical cavity cover; 7. Optical component 2; 8. LED light board; 9. Heat sink; 11. First card slot; 31. First mounting hole; 32. First guide slot; 33. First guide block; 41. Threaded barrel; 42. First elastic buckle; 43. Second guide slot; 44. Second elastic buckle; 45. Mounting slot; 51. Second guide block; 61. Second card slot; 71. Mounting block; 81. Light board mounting hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Depend on Figures 1 to 8 A HUD small-volume modular PGU is provided, comprising an optical cavity 4, a diffuser 3 is installed inside one side of the optical cavity 4, an LCD screen 2 is arranged on one side of the diffuser 3, a shell 1 is also installed on one side of the optical cavity 4, an optical component 1 5 is installed inside the optical cavity 4, an optical cavity cover 6 is installed on the top of the optical cavity 4, an optical component 2 7 is installed inside the other side of the optical cavity 4, an LED light board 8 is installed on the other side of the optical cavity 4, and a threaded cylinder 41 is fixedly installed on the top and bottom of the optical cavity 4.

[0028] like Figure 1 , Figure 2 , Figure 5 and Figure 8As shown, the top and bottom of the LED light board 8 are provided with light board mounting holes 81, and the LED light board 8 can be fixedly mounted on the optical cavity 4 by screwing the second screw into the light board mounting hole 81 and the threaded barrel 41, aligning the light board mounting hole 81 on the LED light board 8 with the threaded barrel 41 on the optical cavity 4, and bringing the LED light board 8 into contact with the optical cavity 4, and then using the second screw to pass through the light board mounting hole 81 and screw into the interior of the threaded barrel 41, at this time, the LED light board 8 can be fixedly mounted on the optical cavity 4 under the action of the second screw and the light board mounting hole 81 and the threaded barrel 41.

[0029] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, first mounting holes 31 are provided at both ends of the top of the diffuser 3, and a second mounting hole is provided on one side of the optical cavity 4 at a position corresponding to the first mounting hole 31. The diffuser 3 can be fixedly installed inside one side of the optical cavity 4 by screwing a first screw into the first mounting hole 31 and the second mounting hole. Both the first mounting hole 31 and the second mounting hole are threaded holes that match the first screw. First guide grooves 32 are provided at both ends of the bottom of the diffuser 3, and a first guide block 33 that matches the first guide groove 32 is fixedly connected to the inner bottom wall of one side of the optical cavity 4. When installing the diffuser 3, first align the first guide groove 32 on the diffuser 3 with the first guide block 33 on the optical cavity 4, and then push the diffuser 3 into the interior of the optical cavity 4 under the guiding action of the first guide groove 32 and the first guide block 33, and the position of the first mounting hole 31 provided on the diffuser 3 corresponds to the position of the second mounting hole on the optical cavity 4, and then screw the first screw into the first mounting hole 31 and the second mounting hole in sequence, and at this time the diffuser 3 is fixed inside the optical cavity 4.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, both ends of the top and bottom of the shell 1 are fixedly connected with the first card slot 11, and the top and bottom of the optical cavity 4 are fixedly connected with the first elastic buckle 42. The shell 1 is fixedly installed on the optical cavity 4 by snapping the first elastic buckle 42 into the first card slot 11. After the diffuser 3 is installed inside the optical cavity 4, the LCD screen 2 is inserted into the optical cavity 4. The LCD screen 2 is located on one side of the diffuser 3, and the optical cavity 4 and the top of the shell 1 are both provided with a space to avoid the gap that matches the raised part of the LCD screen 2. In this way, the LCD screen 2 can be inserted into the optical cavity 4. After the LCD screen 2 is inserted into the optical cavity 4, the shell 1 is aligned with the optical cavity 4 and the shell 1 is inserted into the optical cavity 4. One side of the first elastic buckle 42 at the top and bottom of the optical cavity 4 is Inclined surface, during the insertion process of the shell 1, the shell 1 first contacts the inclined surface of the first elastic buckle 42, and the shell 1 will squeeze the first elastic buckle 42 during the continuous insertion process. When the shell 1 is inserted into the optical cavity 4, the first card slot 11 provided in the shell 1 corresponds to the position of the first elastic buckle 42. At this time, the shell 1 no longer squeezes the first elastic buckle 42, and the first elastic buckle 42 returns to its original shape. At this time, with the cooperation of the first elastic buckle 42 and the first card slot 11, the shell 1 can be fixedly installed on the optical cavity 4, and the shell 1 contacts the LCD screen 2 to fix the position of the LCD screen 2. At the same time, since the top of the shell 1 is provided with an avoidance position, it can be ensured that the raised part on the LCD screen 2 will not affect it during the insertion of the shell 1 into the optical cavity 4.

[0031] like Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, the inner walls on both sides of the front and rear sides of the optical cavity 4 are provided with mounting grooves 45, and the front and back sides of the optical component 2 7 are provided with mounting blocks 71 that match the mounting grooves 45. When installing the optical component 2 7, the optical component 2 7 is placed inside the optical cavity 4 and the mounting block 71 is aligned with the mounting groove 45. With the cooperation of the mounting block 71 and the mounting groove 45, the optical component 2 7 is pushed into the other side of the optical cavity 4. At this time, the optical component 2 7 contacts the inner wall of the optical cavity 4. After the installation of the optical component 2 7 is completed, the optical component 1 5 is installed.

[0032] like Figure 1 , Figure 2 and Figure 5 As shown, the inner walls of the front and rear sides of the optical cavity 4 are provided with second guide grooves 43, the optical component 1 5 is fixedly connected with a second guide block 51 matched with the second guide groove 43, the front and back sides of the optical cavity 4 are fixedly connected with a second elastic buckle 44, the top of the second elastic buckle 44 is tilted to facilitate the insertion of the optical cavity cover 6, the front and back sides of the optical cavity cover 6 are provided with a second card slot 61 matched with the second elastic buckle 44, and the optical cavity cover 6 is provided with a clearance groove for avoiding the threaded barrel 41;

[0033] When installing the optical component 15, first align the second guide block 51 on the optical component 15 with the second guide groove 43 provided in the optical cavity 4, and place the optical component 15 inside the optical cavity 4 under the guidance of the second guide block 51 and the second guide groove 43, so that the optical component 15 contacts the optical component 27, and then align the air-avoiding groove provided in the optical cavity cover 6 with the threaded cylinder 41 on the optical cavity 4, and then, under the guidance of the air-avoiding groove and the threaded cylinder 41, clamp the optical cavity cover 6 on the optical cavity 4 from top to bottom, and the bottom of the optical cavity cover 6 contacts the top of the optical component 15. When the optical cavity cover 6 is inserted into the optical cavity 4, the optical cavity cover 6 will first squeeze the inclined surface of the second elastic buckle 44 until the optical cavity cover 6 is inserted into the optical cavity 4. The second slot 61 opened on the optical cavity cover 6 corresponds to the position of the second elastic buckle 44. At this time, the optical cavity cover 6 no longer squeezes the second elastic buckle 44, and the second elastic buckle 44 returns to its original shape. With the cooperation of the second elastic buckle 44 and the second slot 61, the optical cavity cover 6 can be fixed. At this time, the position of the optical component 5 is fixed under the action of the optical cavity cover 6.

[0034] The above-mentioned HUD small-volume modular PGU is suitable for both HUD metal shells and plastic shells. When the HUD uses a plastic shell, a radiator 9 is fixedly installed on the side of the LED light board 8 away from the optical cavity 4. When the HUD uses a metal shell, the radiator 9 does not need to be installed on the side of the LED light board 8 away from the optical cavity 4.

[0035] The shell 1, LCD screen 2, diffuser 3, optical cavity 4, optical component 1 5, optical cavity cover 6, optical component 2 7, LED light board 8 and heat sink 9 of the present application are designed to be a universal module structure. In this way, in the case of multiple PGUs with different FOVs but similar light output angles, since the PGU of the present application is designed as a universal module, the present application can be adapted to new projects, and can reduce mold opening, shorten development cycles, and reduce project costs. At the same time, due to the universal module structure, the PGU of the present application has fewer structural / optical parts, a small size, simple assembly, reduced energy consumption, and can be pre-installed before production. The pre-installation can be carried out simultaneously during production, which reduces production hours and reduces production costs.

[0036] 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. A HUD small-volume modular PGU, characterized in that: The invention comprises an optical cavity (4), a diffusion sheet (3) is installed inside one side of the optical cavity (4), an LCD screen (2) is arranged on one side of the diffusion sheet (3), a housing (1) is also installed on one side of the optical cavity (4), an optical component 1 (5) is installed inside the optical cavity (4), an optical cavity cover (6) is installed on the top of the optical cavity (4), an optical component 2 (7) is installed inside the other side of the optical cavity (4), an LED light board (8) is installed on the other side of the optical cavity (4), and a threaded barrel (41) is fixedly installed on the top and bottom of the optical cavity (4).

2. The HUD small-volume modular PGU according to claim 1, characterized in that: A heat sink (9) is fixedly mounted on the side of the LED light board (8) away from the light cavity (4); light board mounting holes (81) are provided on the top and bottom of the LED light board (8); and the LED light board (8) can be fixedly mounted on the light cavity (4) by screwing a second screw into the light board mounting hole (81) and the threaded barrel (41).

3. The HUD small-volume modular PGU according to claim 1 or 2, characterized in that: The diffuser (3) is provided with first mounting holes (31) at both ends of the top, and a second mounting hole is provided on one side of the optical cavity (4) at a position corresponding to the first mounting hole (31). The diffuser (3) is fixedly mounted inside one side of the optical cavity (4) by screwing a first screw into the first mounting hole (31) and the second mounting hole.

4. The HUD small-volume modular PGU according to claim 3, characterized in that: Both ends of the bottom of the diffusion sheet (3) are provided with first guide grooves (32), and a first guide block (33) matching the first guide groove (32) is fixedly connected to an inner bottom wall of one side of the optical cavity (4).

5. The HUD small-volume modular PGU according to claim 1 or 2, characterized in that: The top and bottom ends of the housing (1) are both fixedly connected with first card slots (11), the top and bottom of the optical cavity (4) are both fixedly connected with first elastic card buckles (42), and the housing (1) is fixedly mounted on the optical cavity (4) by snapping the first elastic card buckle (42) into the first card slot (11).

6. The HUD small-volume modular PGU according to claim 1 or 2, characterized in that: The inner walls on both the front and rear sides of the optical cavity (4) are provided with second guide grooves (43), and the optical component (5) is fixedly connected with a second guide block (51) that matches the second guide grooves (43).

7. The HUD small-volume modular PGU according to claim 1 or 2, characterized in that: The front and back sides of the optical cavity (4) are both fixedly connected with a second elastic buckle (44), and the front and back sides of the optical cavity cover (6) are both provided with a second clamping groove (61) matching with the second elastic buckle (44).

8. The HUD small-volume modular PGU according to claim 1 or 2, characterized in that: The optical cavity cover (6) is provided with a clearance groove for avoiding the threaded cylinder (41).

9. The HUD small-volume modular PGU according to claim 1 or 2, characterized in that: The inner walls on both the front and rear sides of the optical cavity (4) are provided with mounting grooves (45), and the front and back sides of the optical component 2 (7) are provided with mounting blocks (71) that match the mounting grooves (45).

10. The HUD small-volume modular PGU according to claim 1, characterized in that: The top and bottom of the LED light board (8) are both provided with light board mounting holes (81), and the LED light board (8) can be fixedly mounted on the optical cavity (4) by screwing a second screw into the light board mounting hole (81) and the threaded barrel (41).

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