Integrated DLP (Digital Light Processing) light machine module and HUD (Head Up Display) using same

Abstract

The utility model discloses an integrated DLP light machine module and an HUD using the same, and the module comprises an outer housing which is provided with a first assembly cavity and a second assembly cavity; the control panel is fixed in the first assembly cavity; the optical assembly is arranged in the second assembly cavity and is used for displaying an image; the optical assembly comprises a DLP image source part, a reflection lens and a diffusion sheet. Wherein an accommodating area for fixing a DLP image source component and a positioning area for fixing a reflecting lens and a diffusion sheet are arranged in the second assembly cavity; the positioning area and the accommodating area are distributed in parallel; a first positioning frame for fixing a reflecting lens and a second positioning frame for fixing a diffusion sheet are arranged in the positioning area; and a V-shaped included angle is formed between the first positioning frame and the second positioning frame. According to the utility model, the components are assembled independently, integration of optical, mechanical and electrical modules is realized, the precision guarantee is good, the assembly relation is clear, and batch production is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of HUD vehicle-mounted display, and in particular to an integrated DLP optical machine module and a HUD head-up display using the same. Background Art

[0002] Head-Up Display (HUD) is a safety-enhancing device currently used in automobiles, allowing drivers to view important information without having to look down. DLP stands for "Digital Light Processing," which means that this technology digitally processes image signals before projecting them. HUDs are designed to improve vehicle safety, allowing drivers to focus on the road and reduce accidents. In recent years, with the rapid development of the HUD market, an increasing number of vehicle models are being equipped with HUD products.

[0003] HUD products are categorized as front-mounted and rear-mounted. Front-mounted HUDs are typically installed inside the vehicle's dashboard, using the vehicle's windshield as one of the imaging elements to project a virtual image. Currently, automotive HUDs typically utilize an optical engine (digital light processing) as the image source. The DLP optical engine module employed requires a combination of a control motherboard, optical engine, related lenses, and a film to achieve clear and normal image formation at the diffuser (the HUD's secondary imaging source). However, existing DLP optical engine modules are large, making them difficult to fit within a vehicle. These modules also have low integration, resulting in overlapping assembly dimensions and poor product precision assurance. This in turn leads to inaccurate optical adjustments, poor imaging quality, and high manufacturing costs, as well as limited compatibility with testing and debugging equipment.

[0004] Therefore, for the DLP optical engine module used in HUD head-up display, its integration needs to be further improved to improve the production accuracy and optimize the imaging quality. Utility Model Content

[0005] The first purpose of the present utility model is to provide an integrated DLP optical engine module to solve the technical problem of improving its integration to improve production accuracy and optimize imaging quality.

[0006] The second purpose of the present utility model is to provide a HUD head-up display to solve the technical problem of improving the integration of the DLP optical module used therein to improve the production accuracy and optimize the imaging quality.

[0007] The integrated DLP optical engine module of the present invention is implemented as follows:

[0008] An integrated DLP optical engine module, comprising:

[0009] The outer shell has a first assembly cavity and a second assembly cavity;

[0010] a control panel fixed in the first assembly cavity;

[0011] An optical component is provided in the second assembly cavity for displaying an image; the optical component includes a DLP image source component, a reflective lens and a diffuser; wherein

[0012] The second assembly cavity is provided with a receiving area for fixing the DLP image source component and a positioning area for fixing the reflective lens and the diffuser; the positioning area and the receiving area are distributed in parallel; and a first positioning frame for fixing the reflective lens and a second positioning frame for fixing the diffuser are provided in the positioning area; a V-shaped angle is formed between the first positioning frame and the second positioning frame.

[0013] In an optional embodiment of the present invention, the V-shaped angle formed by the first positioning frame and the second positioning frame is an acute angle; and the opening of the acute angle faces the receiving area;

[0014] The V-shaped angle is 30° to 60°.

[0015] In an optional implementation of the present invention, the first positioning frame and the second positioning frame are both U-shaped.

[0016] In an optional implementation of the present invention, the reflective lens is glued and fixed on the first positioning frame; and

[0017] The diffusion sheet is adhered and fixed on the second positioning frame.

[0018] In an optional implementation of the present invention, a baffle is provided between the positioning area and the receiving area; and

[0019] The baffle plate is provided with a light hole adapted to fit the light outlet of the DLP image source component, so that the image source light emitted by the DLP image source component is incident on the reflective lens through the light hole and then reflected to the diffuser.

[0020] In an optional implementation of the present invention, the DLP image source component is connected to the control board via an FPC cable and a power cable.

[0021] In an optional implementation of the present invention, the DLP image source component is fixed in the receiving area by screws.

[0022] In an optional implementation of the present invention, the control board is locked in the first assembly cavity by screws.

[0023] In an optional implementation of the present invention, a plurality of heat dissipation fins are formed on the outer surface of the bottom wall of the receiving area; and

[0024] A plurality of heat sinks are provided on the outer side wall of the DLP image source component.

[0025] The HUD head-up display of the present invention is realized as follows:

[0026] A HUD head-up display comprises: the integrated DLP optical module described above.

[0027] By adopting the above technical solution, the utility model has the following beneficial effects: the integrated DLP optical machine module of the utility model and the HUD head-up display using the same, the design of the integrated outer shell, realizes the integration of the control board, DLP image source components, reflective lenses and diffusers into a single carrier that can be molded for mass production, simplifies the assembly process, improves production efficiency, fixes the DLP image source components, pastes the reflective lenses and diffusers, and facilitates the plugging and unplugging of the control board wiring, and the assembly of each component is independent of each other, realizing the integration of optical, mechanical and electrical modules, and has good precision assurance and clear assembly relationship, which is convenient for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 Schematic diagram of the structure of the integrated DLP optical engine module from a first perspective of Example 1;

[0029] Figure 2 Schematic diagram of the exploded structure of the integrated DLP optical engine module of Example 1;

[0030] Figure 3 Schematic diagram of the structure of the outer shell of the integrated DLP optical engine module of Example 1;

[0031] Figure 4 2. This is a schematic structural diagram of the integrated DLP optical engine module according to Example 1 from a second viewing angle;

[0032] Figure 5 Schematic diagram of the partial structure of the integrated DLP optical engine module of Example 1 Figure 1 ;

[0033] Figure 6 Schematic diagram of the partial structure of the integrated DLP optical engine module of Example 1 Figure 2 .

[0034] In the figure: outer shell 1, first assembly cavity 11, receiving area 12, positioning area 13, DLP image source component 2, reflective lens 3, diffuser 4, first positioning frame 51, second positioning frame 52, baffle 53, light hole 54, heat dissipation fins 61, heat sink 62, control board 7. DETAILED DESCRIPTION

[0035] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0036] Example 1:

[0037] See also Figures 1 to 6 As shown, this embodiment provides an integrated DLP optical engine module, comprising: an outer housing 1 having a first assembly cavity 11 and a second assembly cavity; a control board 7 fixed in the first assembly cavity 11; and an optical assembly disposed in the second assembly cavity. In one optional embodiment, the control board 7 is screwed into the first assembly cavity 11.

[0038] Specifically, the optical assembly is used for displaying images; it includes a DLP image source component 2, a reflective lens 3, and a diffuser 4. Image source light emitted by the DLP image source component 2 passes through a light hole 54, enters the reflective lens 3, and then reflects to the diffuser 4. The DLP image source component 2 is connected to the control board 7 via an FPC cable and a power cord.

[0039] Furthermore, the second assembly cavity is provided with a receiving area 12 for fixing the DLP image source component 2 and a positioning area 13 for fixing the reflective lens 3 and the diffuser 4; the positioning area 13 and the receiving area 12 are arranged in parallel; and the positioning area 13 is provided with a first positioning frame 51 for fixing the reflective lens 3 and a second positioning frame 52 for fixing the diffuser 4; the DLP image source component 2 is locked in the receiving area 12 by screws.

[0040] Based on the above situation, it should be noted that a V-shaped angle is formed between the first positioning frame 51 and the second positioning frame 52. The V-shaped angle formed by the first positioning frame 51 and the second positioning frame 52 is an acute angle; and the opening of the acute angle faces the receiving area 12; the V-shaped angle is 30° to 60°. Here, under the structure in which the first positioning frame 51 and the second positioning frame 52 form an acute angle, the reflective lens 3 and the diffuser 4 can cooperate to form an acute angle structure. Therefore, while meeting the transmission of the image source light emitted by the DLP image source component 2, it can also reduce the space occupied by the reflective lens 3 and the diffuser 4 in the second assembly cavity, thereby helping to reduce the external dimensions of the overall integrated DLP optical engine module.

[0041] Based on the above structure, and in conjunction with the accompanying drawings, an alternative embodiment is provided in which both the first positioning frame 51 and the second positioning frame 52 are U-shaped. The reflector lens 3 is adhesively fixed to the first positioning frame 51, and the diffuser 4 is adhesively fixed to the second positioning frame 52. The U-shape of the first and second positioning frames 51, 52 ensures the secure attachment of the reflector lens 3 and diffuser 4 while preventing the first and second positioning frames 51, 52 from interfering with light transmission.

[0042] In addition, a baffle plate 53 is provided between the positioning area 13 and the receiving area 12; and a light hole 54 suitable for adapting to the light outlet of the DLP image source component 2 is opened on the baffle plate 53, so that the image source light emitted by the DLP image source component 2 is incident on the reflective lens 3 through the light hole 54 and then reflected to the diffuser 4.

[0043] Finally, it is necessary to explain that, in an optional implementation, to enhance the heat dissipation of the DLP image source component 2, a plurality of heat dissipating fins 61 are formed on the outer surface of the bottom wall of the receiving area 12; and a plurality of heat dissipating fins 62 are provided on the outer side wall of the DLP image source component 2. Alternatively, a heat conducting component may be provided between the DLP image source component 2 and the bottom wall of the receiving area 12 to accelerate heat dissipation. The heat dissipating fins 61 and heat dissipating fins 62 can directly conduct heat generated during operation of the DLP image source component 2 to the outer side wall of the DLP image source component 2, thereby improving heat conduction efficiency. Subsequently, the heat is directly dissipated to the outside world through the plurality of heat dissipating fins 61 formed on the outer surface of the bottom wall of the receiving area 12, thereby significantly improving the heat dissipation of the DLP image source component 2 and thereby extending the service life of the DLP image source component 2.

[0044] In summary, for the integrated DLP optical engine module of this embodiment, the design of the integrated outer shell 1 realizes the integration of the control board 7, DLP image source component 2, reflective lens 3 and diffuser 4 into a single carrier that can be molded and mass-produced, simplifies the assembly process, improves production efficiency, the DLP image source component 2 is fixed, the reflective lens 3 and the diffuser 4 are pasted, and the wiring of the control board 7 is convenient to plug and unplug, and the assembly of each component is independent of each other, realizing the integration of optical, mechanical and electrical modules, with good precision assurance and clear assembly relationship, which is convenient for mass production; in addition, the side-by-side distribution of the first assembly cavity 11 and the second assembly cavity, and the side-by-side distribution of the receiving area 12 and the positioning area 13, make the control board 7, DLP image source component 2, reflective lens 3 and diffuser 4 all in a side-by-side distribution structure in the outer shell 1, under this structure, the overall integrated DLP optical engine module can be flattened, thereby reducing its overall height and reducing its occupancy rate of the installation area in the longitudinal dimension.

[0045] Example 2:

[0046] Based on the integrated DLP optical engine module of Example 1, this embodiment provides a HUD head-up display, including: the integrated DLP optical engine module of Example 1.

[0047] It should be noted that, for the HUD head-up display of this embodiment, in addition to the integrated DLP optical engine module of Example 1, it also includes a reflection system (including a fixed reflector and a rotating reflector) in the HUD shell that cooperates with the integrated DLP optical engine module. Based on this, the DLP image source component 2 emits image source light, which is incident on the reflective lens 3 through the light hole 54 and then reflected on the diffuser 4, and the image light is reflected to the reflection system in the HUD shell. The image light is then modulated by the reflection system and emitted to the imaging element used for imaging (the front windshield of the car) to form a projected virtual image for the driver to observe.

[0048] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0049] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0050] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0051] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0052] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0053] In the present invention, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. An integrated DLP optical engine module, characterized in that: include: The outer shell has a first assembly cavity and a second assembly cavity; a control panel fixed in the first assembly cavity; An optical component is provided in the second assembly cavity for displaying an image; the optical component includes a DLP image source component, a reflective lens and a diffuser; wherein The second assembly cavity is provided with a receiving area for fixing the DLP image source component and a positioning area for fixing the reflective lens and the diffuser; the positioning area and the receiving area are distributed in parallel; and a first positioning frame for fixing the reflective lens and a second positioning frame for fixing the diffuser are provided in the positioning area; a V-shaped angle is formed between the first positioning frame and the second positioning frame.

2. The integrated DLP optical engine module according to claim 1, wherein: The V-shaped angle formed by the first positioning frame and the second positioning frame is an acute angle; and the opening of the acute angle faces the receiving area; The V-shaped angle is 30° to 60°.

3. The integrated DLP optical engine module according to claim 1 or 2, characterized in that: The first positioning frame and the second positioning frame are both U-shaped.

4. The integrated DLP optical engine module according to claim 3, wherein: The reflective lens is glued and fixed on the first positioning frame; and The diffusion sheet is adhered and fixed on the second positioning frame.

5. The integrated DLP optical engine module according to claim 1 or 2, characterized in that: A baffle is provided between the positioning area and the receiving area; and The baffle plate is provided with a light hole adapted to fit the light outlet of the DLP image source component, so that the image source light emitted by the DLP image source component is incident on the reflective lens through the light hole and then reflected to the diffuser.

6. The integrated DLP optical engine module according to claim 1, wherein: The DLP image source component is connected to the control board via an FPC cable and a power cable.

7. The integrated DLP optical engine module according to claim 1 or 6, wherein: The DLP image source component is fixed in the receiving area by screws.

8. The integrated DLP optical engine module according to claim 1, wherein: The control board is locked in the first assembly cavity by screws.

9. The integrated DLP optical engine module according to claim 1, wherein: A plurality of heat dissipation fins are formed on the outer surface of the bottom wall of the receiving area; and A plurality of heat sinks are provided on the outer side wall of the DLP image source component.

10. A HUD head-up display, characterized in that: include: The integrated DLP optical engine module according to any one of claims 1 to 9.

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