Projection apparatus

Abstract

A projection apparatus, comprising: a housing (100), a laser (200), a driving assembly (300) and a first electrically conductive connection portion (400). In the housing (100), a first mounting surface (P1) for the mounting of the laser (200) and a second mounting surface (P2) for the mounting of the driving assembly (300) are not coplanar, such that the laser (200) and the driving assembly (300) in the projection apparatus can be mounted non-coplanarly, and the driving assembly (300) can be non-coplanarly connected to the laser (200) by means of the first electrically conductive connection portion (400), thereby improving the space utilization rate of a mounting space inside the housing (100), and facilitating the miniaturization of the projection apparatus. Moreover, by means of the first electrically conductive connection portion (400), three different types of light-emitting chips for emitting laser light of three colors in a plurality of functional components (202) in the laser (200) can be directly electrically connected to the driving assembly (300), thereby improving the connection efficiency between the laser (200) and the driving assembly (300), and thus improving the overall assembly efficiency of the projection apparatus.

Description

Projection equipment

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. CN202510114002.1, filed on January 23, 2025, entitled “Projection Device”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of optoelectronic technology, and in particular to a projection device. Background Technology

[0004] Projection devices that use lasers as light sources are called laser projection devices. Laser light sources have advantages such as good monochromaticity, high brightness, and long lifespan, making them ideal light sources. This results in projection devices equipped with lasers displaying images with high brightness and good display effects.

[0005] Laser projection equipment can have a laser driver board, which is used to drive the laser to emit light. Currently, the laser in laser projection equipment is electrically connected to the laser driver board via a connecting plate. The laser is typically connected to the connecting plate by soldering to achieve this electrical connection.

[0006] However, the connection efficiency of connecting the laser and the connecting plate by welding is low, resulting in low assembly efficiency of laser projection equipment. Summary of the Invention

[0007] This application provides a projection device. It solves the problem of low overall assembly efficiency of laser projection devices due to the low connection efficiency between the laser and the driver board. The technical solution is as follows:

[0008] A projection device is provided, comprising: a housing, a laser, a driving assembly, and a first conductive connection portion;

[0009] The interior of the housing has a first mounting surface and a second mounting surface, and the first mounting surface and the second mounting surface are not coplanar;

[0010] The laser is mounted on the first mounting surface;

[0011] At least a portion of the drive assembly is mounted on the second mounting surface;

[0012] The first conductive connection is located between the laser and the driving component. The first end of the first conductive connection is electrically connected to the laser, and the second end of the first conductive connection is electrically connected to the driving component. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 is a schematic diagram of a projection device provided in an embodiment of this application;

[0015] Figure 2 is an exploded view of the projection device shown in Figure 1;

[0016] Figure 3 is a schematic diagram of a portion of the structure of a projection device provided in an embodiment of this application;

[0017] Figure 4 is an exploded top view of a projection device provided in an embodiment of this application;

[0018] Figure 5 is a cross-sectional view of a first conductive connection portion provided in an embodiment of this application;

[0019] Figure 6 is a schematic diagram of the structure of a first conductive connection portion provided in an embodiment of this application;

[0020] Figure 7 is a schematic diagram of another projection device provided in an embodiment of this application;

[0021] Figure 8 is an exploded view of the projection device shown in Figure 4;

[0022] Figure 9 is a schematic diagram of another first conductive connection portion provided in an embodiment of this application;

[0023] Figure 10 is a top view of a portion of the structure of a projection device provided in an embodiment of this application;

[0024] Figure 11 is a top view of a partial structure of another projection device provided in an embodiment of this application;

[0025] Figure 12 is a top view of a partial structure of another projection device provided in an embodiment of this application;

[0026] Figure 13 is a schematic diagram of the structure of another projection device provided in an embodiment of this application;

[0027] Figure 14 is a schematic diagram of a portion of the structure of a projection device provided in an embodiment of this application;

[0028] Figure 15 is a top view of a partial structure of another projection device provided in an embodiment of this application;

[0029] Figure 16 is a top view of a partial structure of a projection device according to another embodiment of this application;

[0030] Figure 17 is a top view of a partial structure of another projection device provided in another embodiment of this application;

[0031] Figure 18 is a schematic diagram of the structure of a projection device excluding the housing provided in an embodiment of this application;

[0032] Figure 19 is a schematic diagram of another first conductive connection portion provided in an embodiment of this application;

[0033] Figure 20 is a schematic diagram of another projection device without a housing provided in an embodiment of this application;

[0034] Figure 21 is a schematic diagram of another first conductive connection portion provided in an embodiment of this application;

[0035] Figure 22 is a top view of a partial structure of another projection device provided in another embodiment of this application;

[0036] Figure 23 is an exploded view of another projection device provided in an embodiment of this application. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0038] A projection device equipped with a laser can be called a laser projection device. The laser installed in the projection device serves as a light source to provide laser light to the projection device. The projection device may also include a driver board, which is used to drive multiple light-emitting chips in the laser to emit light. Currently, the driver board is generally electrically connected to the laser via an adapter board. Furthermore, the laser is typically electrically connected to the adapter board, and then to the driver board, via soldering. However, during the soldering process, issues such as flux residue and flux evaporation can easily affect the multiple light-emitting chips in the laser, thus impacting the optical performance of the laser.

[0039] This application provides a projection device. Please refer to Figures 1 and 2. Figure 1 is a structural schematic diagram of the projection device provided in this application embodiment, and Figure 2 is an exploded view of the projection device shown in Figure 1. The projection device may include: a housing 100, a laser 200, a driving component 300, and a first conductive connection portion 400. Here, the housing 100, the laser 200, the driving component 300, and the first conductive connection portion 400 may all be located inside the housing 100.

[0040] It should be noted that, referring to Figure 3, which is a structural schematic diagram of a portion of a projection device provided in an embodiment of this application, the projection device generally includes: a housing 100, a laser light source 001, an optical engine 002, and a projection lens 003. The laser light source 001, optical engine 002, and projection lens 003 can be installed inside the housing 100. The laser light source 001 may include a laser 200, which can emit a laser beam to provide a light source for the projection device. The optical engine 002 is used to generate an image beam based on the laser beam provided by the laser light source 001 and guide the image beam to the projection lens 003. The projection lens 003 is used to image the image beam after receiving it and project it onto a projection screen to display an image on the projection screen.

[0041] The interior of the housing 100 in the projection device may have a first mounting surface P1 and a second mounting surface P2, and the first mounting surface P1 and the second mounting surface P2 of the housing 100 are not coplanar.

[0042] The laser 200 in the projection device can be mounted on the first mounting surface P1 of the housing 100. Here, the laser 200 can have multiple light-emitting chips, and the light-emitting chips in the laser 200 can emit laser light.

[0043] At least a portion of the driving assembly 300 in the projection device can be mounted on the second mounting surface P2 of the housing 100. Here, the driving assembly 300 in the projection device is used to drive multiple light-emitting chips in the laser 200 to emit light, so that the laser 200 can serve as a light source.

[0044] It should be noted that the second mounting surface P2 for mounting the drive assembly 300 in the housing 100 can be the surface of the inner wall of the housing 100. In this case, the drive assembly 300 can be mounted on the inner wall of the housing 100. Alternatively, the housing 100 may have a support portion inside, and the second mounting surface P2 for mounting the drive assembly 300 can be the surface of the support portion. In this case, the drive assembly 300 can be mounted inside the housing 100.

[0045] The first conductive connection portion 400 in the projection device can be located between the laser 200 and the driving component 300. A first end of the first conductive connection portion 400 can be electrically connected to the laser 200, and a second end of the first conductive connection portion 400 can be electrically connected to the driving component 300. In this way, the laser 200 and the driving component 300 in the projection device can be directly connected together through the first conductive connection portion 400, allowing the driving component 300 to normally drive the multiple light-emitting chips in the laser 200 to emit laser light.

[0046] Therefore, the laser 200 and the driving component 300 in the projection device can be installed non-coplanarly, and the non-coplanar connection between the driving component 300 and the laser 200 can be achieved through the first conductive connection part 400. This can improve the space utilization rate of the internal installation space of the housing 100 and is conducive to the miniaturization of the projection device.

[0047] Furthermore, compared to the welding method used in related technologies to bond the laser 200 and the driving component 300 together, directly connecting the laser 200 and the driving component 300 using the first conductive connection part 400 can improve the connection efficiency between the laser 200 and the driving component 300, thereby improving the overall assembly efficiency of the projection device. At the same time, it avoids the adverse effects of welding on the light-emitting chip in the laser 200, improving the reliability of the laser and thus the reliability of the projection device.

[0048] In a specific implementation, please refer to Figure 4, which is an exploded top view of a projection device provided in an embodiment of this application. The laser 200 may include: a substrate 201, and multiple functional components 202 and multiple sets of first connection points L1 located on the substrate 201. The multiple functional components 202 can be electrically connected to the multiple sets of connection points L1. The first end of the first conductive connection portion 400 may have multiple sets of second connection points L2, and the interior of the first conductive connection portion 400 may have multiple sets of signal lines 410. The multiple sets of second connection points L2 of the first conductive connection portion 400 can be electrically connected to the multiple sets of first connection points L1 of the laser 200, and the first ends of the multiple sets of signal lines 410 in the first conductive connection portion 400 can be electrically connected to the multiple sets of second connection points L2.

[0049] In one specific implementation, as shown in Figure 4, the second end of the first conductive connection portion 400 may have multiple sets of third connection points L3, and the second ends of multiple sets of signal lines 410 in the first conductive connection portion 400 may be electrically connected to multiple sets of second connection points L2. The drive assembly 300 may have multiple sets of fourth connection points L4, and the multiple sets of fourth connection points L4 may be electrically connected to multiple sets of third connection points L3.

[0050] In this way, through the corresponding connection of the first connection point L1 and the second connection point L2, the multiple functional components 202 in the laser 200 can be electrically connected to the first ends of the multiple sets of signal lines 410 located inside the first conductive connection part 400. Then, the second ends of the multiple sets of signal lines 410 are electrically connected to the multiple sets of third connection points L3 of the first conductive connection part 400, and the multiple sets of third connection points L3 are electrically connected to the multiple sets of fourth connection points L4. Thus, the multiple functional components 202 in the laser 200 can be electrically connected to the driving component 300. In this way, the driving component 300 can drive the corresponding functional component 202 to start working through the corresponding signal lines 410.

[0051] It should be noted that the multiple sets of first connection points L1 in the laser 200 can be integrated into the first connector 601 in a subsequent embodiment, the multiple sets of second connection points L2 in the first conductive connection portion 400 can be integrated into the second connector 602 in a subsequent embodiment, the multiple sets of third connection points L3 in the first conductive connection portion 400 can be integrated into the third connector 603 in a subsequent embodiment, and the multiple sets of fourth connection points L4 in the driving assembly 300 can be integrated into the fourth connector 604 in a subsequent embodiment. Thus, by plugging in the first connector 601 and the second connector 602, corresponding electrical connections can be achieved between the multiple sets of first connection points L1 and the multiple sets of second connection points L2; ​​and by plugging in the third connector 603 and the fourth connector 604, corresponding electrical connections can be achieved between the multiple sets of third connection points L3 and the multiple sets of fourth connection points L4.

[0052] In one specific implementation, the functional component 202 in the laser 200 may include: a first color light chip 2021, a second color light chip 2022, and a third color light chip 2023. Here, the first color light chip 2021, the second color light chip 2022, and the third color light chip 2023 are all light-emitting chips in the laser 200 for emitting laser light. The wavelength of the first color light emitted by the first color light chip 2021 may be greater than the wavelength of the second color light emitted by the second color light chip 2022, and may also be greater than the wavelength of the third color light emitted by the third color light chip 2023. The first color light may be a red laser, the second color light may be a green laser, and the third color light may be a blue laser.

[0053] It should be noted that multiple first-color light chips 2021 in the laser can be connected in series, and the first positive and first negative electrodes of the multiple first-color light chips 2021 can be electrically connected to the first and second poles in a set of first connection points L1, respectively. Multiple second-color light chips 2022 in the laser can be connected in series, and the second positive and second negative electrodes of the multiple second-color light chips 2022 can be electrically connected to the first and second poles in another set of first connection points L1, respectively. Multiple third-color light chips 2023 in the laser can be connected in series, and the third positive and third negative electrodes of the multiple third-color light chips 2023 can be electrically connected to the first and second poles in yet another set of first connection points L1, respectively. In this way, the driving component 300 can simultaneously drive multiple first-color light chips 2021 to emit first-color light, simultaneously drive multiple second-color light chips 2022 to emit second-color light, and simultaneously drive multiple third-color light chips 2021 to emit third-color light.

[0054] Currently, when connecting the laser and the drive assembly by welding, the first and second poles of a set of first connection points L1 corresponding to the first positive and first negative poles, the first and second poles of another set of first connection points L1 corresponding to the second positive and second negative poles, and the first and second poles of yet another set of first connection points L1 corresponding to the third positive and third negative poles are all welded together with the drive assembly 300. This results in low connection efficiency between the laser and the drive assembly, and consequently, low overall assembly efficiency of the projection device.

[0055] In this application, by electrically connecting multiple sets of second connection points L2 of the first conductive connection part 400 to multiple sets of first connection points L1, and by electrically connecting the second end of the first conductive connection part 400 to the driving component 300, the electrical connection between the light-emitting chip for emitting three colors of laser in multiple functional components 202 and the driving component 300 can be directly realized, thereby improving the connection efficiency between the laser 200 and the driving component 300, and thus improving the overall assembly efficiency of the projection device.

[0056] In this application, the first mounting surface P1 for mounting the laser 200 and the second mounting surface P2 for mounting the drive assembly 300 in the housing 100 are not coplanar. This allows the laser 200 and the drive assembly 300 in the projection device to be mounted non-coplanarly. Furthermore, the first conductive connection portion 400 enables a non-coplanar connection between the drive assembly 300 and the laser 200. This improves the space utilization of the internal installation space of the housing 100, which is beneficial for the miniaturization of the projection device. Moreover, the first conductive connection portion allows direct electrical connection between the three different types of light-emitting chips (emitting three colors of laser light) in the multiple functional components 202 of the laser 200 and the drive assembly 300, improving the connection efficiency between the laser 200 and the drive assembly 300, thereby improving the overall assembly efficiency of the projection device.

[0057] In summary, this application provides a projection device including a housing, a laser, a driving assembly, and a first conductive connection. The first mounting surface of the housing for mounting the laser and the second mounting surface for mounting the driving assembly are not coplanar, allowing the laser and driving assembly in the projection device to be mounted non-coplanarly. Furthermore, the first conductive connection enables a non-coplanar connection between the driving assembly and the laser, thus improving the space utilization of the internal installation space of the housing and facilitating the miniaturization of the projection device. Moreover, the first conductive connection allows direct electrical connection between the three different types of light-emitting chips emitting three colors of laser light in the laser's multiple functional components and the driving assembly, improving the connection efficiency between the laser and the driving assembly, and consequently enhancing the overall assembly efficiency of the projection device.

[0058] In one specific implementation, as shown in FIG5, FIG5 is a cross-sectional view of a first conductive connection portion provided in an embodiment of the present application. The first conductive connection portion 400 may include: a first conductive layer 400a and a second conductive layer 400b stacked together.

[0059] In the first conductive connection portion 400, each signal line 410 for electrical connection with the first color light chip 2021 may include a first sub-line and a second sub-line. Here, each signal line 410 for electrical connection with the first color light chip 2021 may have two signal lines respectively electrically connected to the first positive electrode and the first negative electrode of the first color light chip 2021. The first sub-line may be distributed in the first conductive layer 400a, and the second sub-line may be distributed in the second conductive layer 400b. That is, the signal line in the first conductive connection portion 400 for electrical connection with the first positive electrode of the first color light chip 2021 may be simultaneously distributed in the first conductive layer 400a and the second conductive layer 400b, and the signal line in the first conductive connection portion 400 for electrical connection with the first negative electrode of the first color light chip 2021 may be simultaneously distributed in the first conductive layer 400a and the second conductive layer 400b.

[0060] In the first conductive connection portion 400, each signal line for electrical connection with the second color light chip 2022 is distributed in the first conductive layer 400a. Here, each signal line 410 for electrical connection with the second color light chip 2022 may have two signal lines respectively electrically connected to the second positive and second negative terminals of the second color light chip 2022. That is, the two signal lines 410 in the first conductive connection portion 400 for electrical connection with the second positive and second negative terminals of the second color light chip 2022 may be evenly distributed in the first conductive layer 400a.

[0061] In the first conductive connection portion 400, each signal line for electrical connection with the third color light chip 2023 is distributed in the second conductive layer 400b. Here, each signal line 410 for electrical connection with the third color light chip 2023 may have two signal lines respectively electrically connected to the third positive and third negative terminals of the third color light chip 2023. That is, the two signal lines 410 in the first conductive connection portion 400 for electrical connection with the third positive and third negative terminals of the third color light chip 2023 may be evenly distributed in the second conductive layer 400b.

[0062] Here, since the wavelength of the first color light emitted by the first color light chip 2021 can be greater than the wavelength of the second color light emitted by the second color light chip 2022, and also greater than the wavelength of the third color light emitted by the third color light chip 2023, a larger current is required to drive the first color light chip 2021 to emit light during the operation of the laser 200. Thus, by simultaneously distributing the signal lines in the first conductive connection portion 400 for electrical connection to the first positive electrode of the first color light chip 2021 in the first conductive layer 400a and the second conductive layer 400b, and simultaneously distributing the signal lines in the first conductive connection portion 400 for electrical connection to the first negative electrode of the first color light chip 2021 in the first conductive layer 400a and the second conductive layer 400b, the overcurrent capability of the first conductive connection portion 400 can be improved, thereby improving the reliability of the first conductive connection portion 400.

[0063] In one specific embodiment, the multiple functional components 202 in the laser 200 may further include a temperature sensor 2024. In the first conductive connection portion 400, each signal line 410 for connecting to the temperature sensor 2024 is distributed in the first conductive layer 400a. That is, the two signal lines 410 in the first conductive connection portion 400 for electrically connecting to the fourth positive and fourth negative terminals of the temperature sensor 2024 may be evenly distributed in the first conductive layer 400a. Alternatively, each signal line 410 for connecting to the temperature sensor 2024 may be evenly distributed in the second conductive layer 400b. That is, the two signal lines 410 in the first conductive connection portion 400 for electrically connecting to the fourth positive and fourth negative terminals of the temperature sensor 2024 may be evenly distributed in the second conductive layer 400b. Alternatively, the first signal line for electrically connecting to the temperature sensor 2024 may be distributed in the first conductive layer 400a, and the other signal line may be distributed in the second conductive layer 400b.

[0064] In this application, the first mounting surface P1 and the second mounting surface P2, which are not coplanar, in the housing 100 can have the following characteristics:

[0065] In the first case, as shown in Figures 1 and 2, the first mounting surface P1 of the housing 100 can be parallel to the second mounting surface P2; that is, the first mounting surface P1 can be parallel to the second mounting surface P2 but not coplanar. The housing 100 may also have a support surface P3 located between the first mounting surface P1 and the second mounting surface P2. Here, the first mounting surface P1 and the second mounting surface P2 are parallel, and the support surface P3 can intersect the first mounting surface P1 and the second mounting surface P2. For example, the support surface P3 can intersect the first mounting surface P1 and the second mounting surface P2 perpendicularly.

[0066] In a specific implementation, when the first mounting surface P1 and the second mounting surface P2 of the housing 100 are parallel and not coplanar, please refer to Figure 6. Figure 6 is a structural schematic diagram of a first conductive connection portion provided in an embodiment of this application. The first conductive connection portion 400 may include a first part 401, a second part 402, and a third part 403 connected to each other. The second part 402 of the first conductive connection portion 400 may be located between the first part 401 and the third part 403, and the second part 402 may be distributed on the support surface P3 of the housing 100. The end of the first part 401 of the first conductive connection portion 400 that is away from the second part 402 may be electrically connected to the laser 200. Here, the end of the first part 401 that is away from the second part 402 is the first end of the first conductive connection portion 400. The end of the third part 403 of the first conductive connection portion 400 that is away from the second part 402 may be connected to the driving assembly 300. Here, the end of the third part 403 that is away from the second part 402 is the second end of the first conductive connection portion 400.

[0067] In this design, the extension direction of the first portion 401 of the first conductive connection 400 can be parallel to the first mounting surface P1 of the housing 100, and the extension direction of the second portion 402 of the first conductive connection 400 can be parallel to the second mounting surface P2 of the housing 100. Since the first mounting surface P1 and the second mounting surface P2 of the housing 100 are parallel, the extension direction of the first portion 401 of the first conductive connection 400 can be parallel to the extension direction of the third portion 403. Furthermore, since the second portion 402 between the first portion 401 and the third portion 403 is distributed on the support surface P3 of the housing 100, and the support surface P3 intersects with the first mounting surface P1 and the second mounting surface P2, the second portion 402 of the first conductive connection 400 can intersect with both the first portion 401 and the second portion 402.

[0068] In this way, when the first portion 401 of the first conductive connection 400 is stretched, the supporting surface P3 can eliminate the stretching force under the support of the second portion 402, ensuring that the stretching force is not transmitted to the third portion 403. This, in turn, ensures that the connection between the end of the third portion 403 facing away from the second portion 402 and the drive assembly 300 is not stretched. Similarly, when the second portion 402 of the first conductive connection 400 is stretched, the supporting surface P3 can eliminate the stretching force under the support of the second portion 402, ensuring that the stretching force is not transmitted to the first portion 401. This, in turn, ensures that the connection between the end of the first portion 401 facing away from the second portion 402 and the laser 200 is not stretched. This results in high reliability of the connections between the first and second ends of the first conductive connection 400 and the laser 200 and the drive assembly 300, respectively, further improving the reliability of the projection device.

[0069] In the second case, please refer to Figures 7, 8, and 9. Figure 7 is a structural schematic diagram of another projection device provided in an embodiment of this application; Figure 8 is an exploded view of the projection device shown in Figure 7; and Figure 9 is a structural schematic diagram of another first conductive connection provided in an embodiment of this application. The first mounting surface P1 of the housing 100 may intersect with the second mounting surface P2. For example, the first mounting surface P1 of the housing 100 may intersect the second mounting surface P2 perpendicularly.

[0070] In one specific embodiment, where the first mounting surface P1 and the second mounting surface P2 of the housing 100 intersect, the first conductive connection portion 400 may include a fourth portion 404 and a fifth portion 405 connected to each other. The end of the fourth portion 404 of the first conductive connection portion 400 facing away from the fifth portion 405 can be electrically connected to the laser 200; here, the end of the fourth portion 404 facing away from the fifth portion 405 is the first end of the first conductive connection portion 400. The end of the fifth portion 405 of the first conductive connection portion 400 facing away from the fourth portion 404 can be electrically connected to the drive assembly 300; here, the end of the fifth portion 405 facing away from the fourth portion 404 is the second end of the first conductive connection portion 400.

[0071] Specifically, the fourth portion 404 of the first conductive connection 400 can extend parallel to the first mounting surface P1 of the housing 100, and the fifth portion 405 of the first conductive connection 400 can extend parallel to the second mounting surface P2 of the housing 100. Since the first mounting surface P1 intersects the second mounting surface P2, the fourth portion 404 and the fifth portion 405 of the first conductive connection 400 can intersect; for example, they can intersect perpendicularly.

[0072] Thus, when the fifth portion 405 of the first conductive connection 400 is stretched, since the extending direction of the fifth portion 405 intersects with the extending direction of the fourth portion 404, the tensile force on the fifth portion 405 is transmitted to the fourth portion 404, making it less likely that the connection between the end of the fourth portion 404 away from the fifth portion 405 and the drive assembly 300 will become loose. Similarly, when the fourth portion 404 of the first conductive connection 400 is stretched, since the extending direction of the fifth portion 405 intersects with the extending direction of the fourth portion 404, the tensile force on the fourth portion 404 is transmitted to the fifth portion 405, making it less likely that the connection between the end of the fifth portion 405 away from the fourth portion 404 and the laser 200 will become loose. This makes the connections between the first and second ends of the first conductive connection 400 and the laser 200 and the drive assembly 300 more reliable, respectively, further improving the reliability of the projection device.

[0073] In this application, as shown in Figures 1, 6 and 10, Figure 10 is a top view of a partial structure of a projection device provided in an embodiment of this application. The projection device may include multiple lasers 200, and each of the multiple lasers 200 can serve as a light source to provide laser light to the projection device, thereby improving the brightness of the light source of the projection device and making the display effect of the projection device better.

[0074] As shown in Figure 11, which is a top view of a partial structure of another projection device provided in an embodiment of this application, multiple lasers 200 in the projection device can be electrically connected to a driving component 300 through a first conductive connection portion 400. The first conductive connection portion 400 may include a first connecting body 406 and multiple first connecting branches 407. The first connecting body 406 can be electrically connected to the driving component 300, and the multiple first connecting branches 407 can all be electrically connected to the side of the first connecting body 406 opposite to the driving component 300, and the multiple first connecting branches 407 can be electrically connected to the multiple lasers 200 one-to-one. In this way, multiple lasers 200 in the projection device can be electrically connected to the driving component 300 through a first conductive connection portion 400, and the driving component 300 can drive the multiple lasers 200 to emit light through the first conductive connection portion 400.

[0075] Alternatively, as shown in Figures 10 and 12, Figure 12 is a top view of a partial structure of another projection device provided in an embodiment of this application. Multiple lasers 200 in the projection device can be electrically connected to a driving component 300 through multiple first conductive connections 400. The multiple lasers 200 and the multiple first conductive connections 400 in the projection device can correspond one-to-one. The first end of each first conductive connection 400 can be electrically connected to the corresponding laser 200, and the second end of each first conductive connection 400 can be electrically connected to the driving component 300. In this way, each laser 200 in the projection device can be electrically connected to the driving component 300 through a corresponding first conductive connection 400, and the driving component 300 can drive the corresponding laser 200 to emit light through the corresponding first conductive connection 400.

[0076] In one specific implementation, as shown in Figures 10 and 12, the driving assembly 300 in the projection device may include an adapter plate 301 and a driving plate 302. The adapter plate 301 in the driving assembly 300 can be mounted on the second mounting surface P2 of the housing 100, and the second end of the first conductive connection portion 400 can be electrically connected to the adapter plate 301. Here, the driving plate 302 in the driving assembly 300 is used to drive the laser 200 to emit light. The driving plate 302 can be electrically connected to the first conductive connection portion 400 via the adapter plate 301, and thus electrically connected to the laser 200.

[0077] Alternatively, as shown in Figures 11, 13, and 14, Figure 13 is a structural schematic diagram of another projection device provided in an embodiment of this application, and Figure 14 is a structural schematic diagram of a portion of the structure of a projection device provided in an embodiment of this application. The driving component 300 in the projection device may include a driving board 302, which can be mounted on the second mounting surface P2 of the housing 100. The second end of the first conductive connection portion 400 can be electrically connected to the driving board 302. In this way, the driving board 302 in the driving component 300 can be directly electrically connected to the laser 200 through the first conductive connection portion 400 to drive the laser 200 to emit light.

[0078] It should be noted that, referring to Figure 15, which is a top view of a partial structure of a projection device provided in another embodiment of this application, when the projection device includes a laser 200 and the driving assembly 300 includes an adapter plate 301 and a driving plate 302, the laser 200 can be electrically connected to the adapter plate 301 through a first conductive connection portion 400, and then electrically connected to the driving plate 302 through the adapter plate 301. Referring to Figure 16, which is a top view of a partial structure of a projection device provided in another embodiment of this application, when the projection device includes a laser 200 and the driving assembly 300 includes a driving plate 302, the laser 200 can be electrically connected to the driving plate 302 through a first conductive connection portion 400.

[0079] It should be noted that when the projection device includes multiple lasers 200, the multiple lasers 200 in the projection device can be connected in series or in parallel.

[0080] As shown in Figure 11, when the driving component 300 in the projection device includes a driving board 302, and multiple lasers 200 are electrically connected to the driving component 300 through a first conductive connection part 400, the first connection body 406 in the first conductive connection part 400 may integrate a first line A1 for realizing the series connection of multiple lasers 200.

[0081] For example, when there are two lasers 200 in the projection device, the two ends of the first line A1 integrated inside the first connection body 406 can be electrically connected to the two lasers 200 respectively, thus realizing the series connection of the two lasers 200.

[0082] It should be noted that when the driving component 300 in the projection device includes a driving board 302, and multiple lasers 200 are electrically connected to the driving component 300 through a first conductive connection part 400, the first connecting body 406 and the corresponding first connecting branch 407 may integrate circuits for connecting the corresponding lasers 200 and the driving board 302. If the first connecting body 406 also integrates a first line A1, the multiple lasers 200 are connected in series; if the first connecting body 406 does not integrate a first line A1 for connecting the multiple lasers 200 in series, the multiple lasers 200 are connected in parallel.

[0083] As shown in Figure 12, the driving component 300 in the projection device includes an adapter plate 301 and a driving plate 302. Multiple lasers 200 can be electrically connected to the driving component 300 through multiple first conductive connections 400. Each laser 200 can be electrically connected to the adapter plate 301 in the driving component 300 through its corresponding first conductive connection 400, and then electrically connected to the driving plate 302 through the adapter plate 301. The adapter plate 301 in the driving component 300 can integrate a second line A2 for connecting multiple lasers 200 in series. Here, the first end of each first conductive connection 400 can be electrically connected to the corresponding laser 200, and the second end of each first conductive connection 400 can be electrically connected to the adapter plate 301. The second ends of multiple first conductive connections 400 can be connected together through the second line A2, thereby achieving series connection of multiple lasers 200.

[0084] For example, when there are two lasers 200 in the projection device, there are also two first conductive connection parts 400 in the projection device. The first end of the first conductive connection part 400 can be electrically connected to the corresponding laser 200, and the second end of the first conductive connection part 400 can be electrically connected to the adapter plate 301. The two ends of the second line A2 integrated inside the adapter plate 301 can be electrically connected to the second ends of the two first conductive connection parts 400 respectively, thus realizing the series connection of the two lasers 200.

[0085] It should be noted that when the driving component 300 in the projection device includes an adapter board 301 and a driving board 302, and multiple lasers 200 are electrically connected to the driving component 300 through multiple first conductive connections 400, the adapter board 301 may integrate multiple lines for connecting the second ends of the first conductive connections 400 and the driving board 302. If the adapter board 301 also integrates a second line A2, the multiple lasers 200 are connected in series. If the adapter board 301 does not integrate a second line A2 for connecting the multiple lasers 200 in series, the multiple lasers 200 are connected in parallel.

[0086] In one specific implementation, as shown in Figures 13 and 14, when the driving assembly 300 in the projection device includes a driving board 302, and multiple lasers 200 are electrically connected to the driving assembly 300 through multiple first conductive connections 400, each laser 200 can be electrically connected to the driving board 302 in the driving assembly 300 through one first conductive connection 400. Here, the multiple lasers 200 are connected in parallel.

[0087] In one specific implementation, please refer to Figure 17, which is a top view of a partial structure of another projection device provided in another embodiment of this application. When the driving component 300 in the projection device includes a driving board 302, the number of driving boards 302 can be the same as the number of lasers 200, and the multiple driving boards 302 and the multiple lasers 200 can correspond one-to-one. Each laser 200 can be electrically connected to the corresponding driving board 302 through a first conductive connection portion 400. Here, the multiple lasers 200 are connected in parallel.

[0088] In one specific implementation, as shown in Figures 18 and 19, Figure 18 is a structural schematic diagram of a projection device excluding a housing provided in an embodiment of this application, and Figure 19 is a structural schematic diagram of another first conductive connection provided in an embodiment of this application. It should be noted that Figures 18 and 19 are schematic diagrams of the first mounting surface and the second mounting surface of the housing in a first case. Furthermore, as shown in Figures 20 and 21, Figure 20 is a structural schematic diagram of another projection device excluding a housing provided in an embodiment of this application, and Figure 21 is a structural schematic diagram of yet another first conductive connection provided in an embodiment of this application. It should be noted that Figures 20 and 21 are schematic diagrams of the first mounting surface and the second mounting surface of the housing in a first case.

[0089] The first end of the first conductive connection portion 400 may have a first connector 601, and the laser 200 may have a second connector 602 that plugs into the first connector 601. Through the plugging of the first connector 601 and the second connector 602, the laser 200 can be electrically connected to the first end of the first conductive connection portion 400. The second end of the first conductive connection portion 400 may be soldered to the drive assembly 300. For example, in the case where the drive assembly 300 includes an adapter plate 301 and a drive plate 302, the second end of the first conductive connection portion 400 may be soldered to the adapter plate 301 in the drive assembly 300. In this way, compared to the laser being directly soldered to the adapter plate, the connection efficiency between the first end of the first conductive connection portion 400 and the drive assembly 300 can be improved by plugging the first end of the first conductive connection portion 400 into the laser 200 via a connector and the second end of the first conductive connection portion 400 being soldered to the adapter plate 301.

[0090] Alternatively, the second end of the first conductive connection portion 400 has a third connector 603, and the drive assembly 300 has a fourth connector 604 that plugs into the third connector 603. Through the plugging of the third connector 603 and the fourth connector 604, the second end of the first conductive connection portion 400 can be electrically connected to the drive assembly 300. The first end of the first conductive connection portion 400 can be soldered to the laser 200. In this way, compared to soldering the laser directly to the adapter plate, the connection efficiency between the laser 200 and the drive assembly 300 can be improved by having the second end of the first conductive connection portion 400 plugged into the drive assembly 300 and the first end of the first conductive connection portion 400 soldered to the laser 200.

[0091] For example, when the drive assembly 300 includes an adapter plate 301 and a drive plate 302, the adapter plate 301 may have a fourth connector 604. Through the insertion of the third connector 603 and the fourth connector 604, the second end of the first conductive connection portion 400 can be electrically connected to the adapter plate 301, and subsequently to the drive plate 302. When the drive assembly 300 includes a drive plate 302, the drive plate 302 may have a fourth connector 604. Through the insertion of the third connector 603 and the fourth connector 604, the second end of the first conductive connection portion 400 can be electrically connected to the drive plate 302.

[0092] Alternatively, the first end of the first conductive connection portion 400 may have a first connector 601, and the laser 200 may have a second connector 602 that plugs into the first connector 601. Through the plugging of the first connector 601 and the second connector 602, the laser 200 can be electrically connected to the first end of the first conductive connection portion 400. The second end of the first conductive connection portion 400 has a third connector 603, and the driving assembly 300 has a fourth connector 604 that plugs into the third connector 603. Through the plugging of the third connector 603 and the fourth connector 604, the second end of the first conductive connection portion 400 can be electrically connected to the driving assembly 300. In this way, compared to the laser being directly soldered to the adapter plate, the first and second ends of the first conductive connection portion 400 are electrically connected to the laser 200 and the driving assembly 300 respectively through connector plugging, which can improve the connection efficiency between the laser 200 and the driving assembly 300.

[0093] In one specific implementation, please refer to Figure 22, which is a top view of a partial structure of another projection device provided in another embodiment of this application. When the second end of the first conductive connection portion 400 has a third connector 603 and the driving component 300 has a fourth connector 604, the number of both the third connector 603 and the fourth connector 604 can be multiple. Multiple third connectors 603 can be plugged into multiple fourth connectors 604 in a one-to-one correspondence. The flexible circuit portion 400 may include: a second connecting body 408 and multiple second connecting branches 409. The second connecting body 408 in the first conductive connection portion 400 can be electrically connected to the laser 200. Each of the multiple second connecting branches 409 in the first conductive connection portion 400 can be electrically connected to the side of the second connecting body 408 opposite to the laser 200, and each of the multiple second connecting branches 409 can be electrically connected to multiple third connectors 603 in a one-to-one correspondence.

[0094] It should be noted that, since the multiple light-emitting chips in the laser 200 include multiple first light-emitting chips, multiple second light-emitting chips, and multiple third light-emitting chips, the flexible connection portion 400 may have at least three second connection branches 409. After multiple first light-emitting chips are connected in series, they can be electrically connected to the driving component 300 through the second connection body 408 and one second connection branch 409. After multiple second light-emitting chips are connected in series, they can be electrically connected to the driving component 300 through the second connection body 408 and another second connection branch 409. After multiple third light-emitting chips are connected in series, they can be electrically connected to the driving component 300 through the second connection body 408 and another second first conductive connection portion 404.

[0095] Thus, the third connector 603, which is electrically connected to each second connection branch 409, and the fourth connector 604, which is plugged into the third connector 603, only need to bear the current used to drive one light-emitting chip to emit light. Compared to the current used to drive multiple first light-emitting chips, the current used to drive multiple second light-emitting chips and the current used to drive multiple third light-emitting chips are both conducted through a third connector and a fourth connector. The current flowing through the third connector 603 and the fourth connector 604 in this application is smaller, and therefore the reliability of the third connector 603 and the fourth connector 604 is higher.

[0096] It should be noted that, as shown in Figures 10 and 12, when the drive assembly 300 includes an adapter plate 301 and a drive plate 302, the drive assembly 300 may further include a second conductive connection portion 303, through which the adapter plate 301 and the drive plate 302 can be electrically connected. For example, the end of the adapter plate 301 facing away from the first conductive connection portion 302 in the drive assembly 300 may have a fifth connector 3011, and the end of the drive plate 302 facing the adapter plate 301 may have a sixth connector 3021. The two ends of the second conductive connection portion 303 can be inserted into the fifth connector 3011 and the sixth connector 3021 respectively, thus achieving an electrical connection between the adapter plate 301 and the drive plate 302.

[0097] In one specific implementation, please refer to Figure 23, which is an exploded view of another projection device provided in an embodiment of this application. The projection device may further include at least two heat dissipation support pads 500. At least one of the at least two heat dissipation support pads 500 is located between the first conductive connection portion 400 and the first mounting surface P1 of the housing 100. Here, the heat dissipation support pad 500 can contact the side of the first conductive connection portion 400 away from the first connector 601, so that the heat generated by the first connector 601 can be dissipated through the heat dissipation support pad 500. At least one of the at least two heat dissipation support pads 500 is located between the first conductive connection portion 400 and the second mounting surface P2 of the housing 100. Here, the heat dissipation support pad 500 can contact the side of the first conductive connection portion 400 away from the third connector 603, so that the heat generated by the third connector 603 can be dissipated through the heat dissipation support pad 500.

[0098] It should be noted that, as shown in Figure 23, the first mounting surface P1 may have a first limiting groove K1, and the second mounting surface P2 may have a second limiting groove K2. At least a portion of the heat dissipation support pad 500 located between the first conductive connection portion 400 and the first mounting surface P1 of the housing 100 may be located within the first limiting groove K1. At least a portion of the heat dissipation support pad 500 located between the first conductive connection portion 400 and the second mounting surface P2 of the housing 100 may be located within the second limiting groove K2.

[0099] In summary, the embodiments of this application provide a projection device, including: a housing, a laser, a driving assembly, and a first conductive connection portion. The first mounting surface of the housing for mounting the laser and the second mounting surface for mounting the driving assembly are not coplanar, allowing the laser and driving assembly in the projection device to be mounted non-coplanarly. Furthermore, the first conductive connection portion enables a non-coplanar connection between the driving assembly and the laser, thus improving the space utilization of the internal mounting space of the housing and facilitating the miniaturization of the projection device. Moreover, the first conductive connection portion allows direct electrical connection between the three different types of light-emitting chips emitting three colors of laser light in the laser's multiple functional components and the driving assembly, improving the connection efficiency between the laser and the driving assembly, and consequently improving the overall assembly efficiency of the projection device.

[0100] It should be noted that, based on the technical objectives of this application, multiple embodiments described above can be combined with each other. The specific solutions resulting from these combinations can be found in the descriptions of each specific embodiment, and will not be repeated here.

[0101] In this application, the terms "first" and "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0102] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A projection device, characterized in that, include: Housing, laser, drive assembly, and first conductive connection; The interior of the housing has a first mounting surface and a second mounting surface, and the first mounting surface and the second mounting surface are not coplanar; The laser is mounted on the first mounting surface; At least a portion of the drive assembly is mounted on the second mounting surface; The first conductive connection is located between the laser and the driving component. The first end of the first conductive connection is electrically connected to the laser, and the second end of the first conductive connection is electrically connected to the driving component.

2. The projection device according to claim 1, characterized in that, The laser includes: a substrate, and a plurality of functional components and a plurality of first connection points located on the substrate, wherein the plurality of functional components and the plurality of first connection points are electrically connected accordingly; The first end of the first conductive connection portion has multiple sets of second connection points, and the first conductive connection portion has multiple sets of signal lines inside; the multiple sets of second connection points can be electrically connected to the multiple sets of first connection points, and the first end of the multiple sets of signal lines is electrically connected to the multiple sets of second connection points.

3. The projection device according to claim 2, characterized in that, The plurality of functional components include: a first color light chip, a second color light chip, and a third color light chip; the wavelength of the first color light emitted by the first color light chip is greater than the wavelength of the second color light emitted by the second color light chip, and is also greater than the wavelength of the third color light emitted by the third color light chip. The first conductive connection portion includes: a first conductive layer and a second conductive layer stacked together; In the first conductive connection portion, each signal line for electrical connection with the first color light chip includes: a first sub-line and a second sub-line connected to each other, the first sub-line being distributed in the first conductive layer and the second sub-line being distributed in the second conductive layer; each signal line for electrical connection with the second color light chip is distributed in the first conductive layer; and each signal line for electrical connection with the third color light chip is distributed in the second conductive layer.

4. The projection device according to claim 3, characterized in that, The plurality of functional components also include: a temperature sensor; In the first conductive connection portion, each signal line for electrical connection with the temperature sensor is distributed in the first conductive layer; or, each signal line for electrical connection with the temperature sensor is distributed in the second conductive layer; or, one signal line for electrical connection with the temperature sensor is distributed in the first conductive layer and the other signal line is distributed in the second conductive layer.

5. The projection device according to claim 2, characterized in that, The second end of the first conductive connection portion has multiple sets of third connection points, and the second ends of the multiple sets of signal lines are electrically connected to the multiple sets of second connection points. The drive component has multiple sets of fourth connection points, which are electrically connected to the multiple sets of third connection points.

6. The projection device according to any one of claims 1-5, characterized in that, The first mounting surface and the second mounting surface are parallel, and the housing also has a support surface located between the first mounting surface and the second mounting surface; The first conductive connection portion includes: a first part, a second part, and a third part connected to each other; the second part is located between the first part and the third part and is distributed on the support surface; one end of the first part away from the second part is electrically connected to the laser; one end of the third part away from the second part is electrically connected to the driving assembly. Wherein, the extension direction of the first part is parallel to the first mounting surface; the extension direction of the third part is parallel to the second mounting surface; the extension direction of the second part intersects with the extension direction of the first part and also intersects with the extension direction of the third part.

7. The projection device according to any one of claims 1-5, characterized in that, The first mounting surface and the second mounting surface intersect; The first conductive connection portion includes: a fourth portion and a fifth portion connected to each other; one end of the fourth portion opposite to the fifth portion is electrically connected to the laser; one end of the fifth portion opposite to the fourth portion is electrically connected to the driving component. The fourth part extends in a direction parallel to the first mounting surface, and the fifth part extends in a direction parallel to the second mounting surface.

8. The projection device according to any one of claims 1-5, characterized in that, The projection device includes a plurality of the lasers; The plurality of lasers are electrically connected to the driving assembly through a first conductive connection portion; The first conductive connection portion includes: a first connection body and a plurality of first connection branches. The first connection body is electrically connected to the driving component. The plurality of first connection branches are all electrically connected to the side of the first connection body away from the driving component, and the plurality of first connection branches are electrically connected to a plurality of lasers in a one-to-one correspondence. Alternatively, multiple lasers are electrically connected to the driving component through multiple first conductive connection portions, with each laser and each first conductive connection portion corresponding one-to-one. The first end of each first conductive connection portion is electrically connected to the corresponding laser, and the second end of each first conductive connection portion is electrically connected to the driving component.

9. The projection device according to claim 8, characterized in that, The drive assembly includes an adapter plate and a drive plate. The adapter plate is mounted on the second mounting surface, and the second end of the first conductive connection portion is electrically connected to the adapter plate. Alternatively, the driving assembly includes a driving board mounted on the second mounting surface, and the second end of the first conductive connection portion is electrically connected to the driving board.

10. The projection device according to claim 9, characterized in that, In the case where the driving assembly includes a driving board and multiple lasers are electrically connected to the driving assembly through a first conductive connection, the interior of the first connection body integrates a first circuit for connecting multiple lasers in series. Alternatively, in the case where the driving assembly includes an adapter board and a driving board, and multiple lasers are electrically connected to the driving assembly through multiple first conductive connections, the adapter board integrates a second circuit for connecting multiple lasers in series.

11. The projection device according to any one of claims 1-5 and 9-10, characterized in that, The first end of the first conductive connection portion has a first connector, and the laser has a second connector that plugs into the first connector; the second end of the first conductive connection portion is welded to the driving assembly. Alternatively, the second end of the first conductive connection has a third connector, the drive assembly has a fourth connector that plugs into the third connector, and the first end of the first conductive connection is welded to the laser; Alternatively, the first end of the first conductive connection has a first connector, and the laser has a second connector that plugs into the first connector; the second end of the first conductive connection has a third connector, and the drive assembly has a fourth connector that plugs into the third connector.

12. The projection device according to claim 11, characterized in that, When the second end of the first conductive connection portion has a third connector and the drive assembly has a fourth connector, there are multiple third connectors and multiple fourth connectors, and the multiple third connectors are plugged into the multiple fourth connectors in a one-to-one correspondence. The first conductive connection portion includes: a second connection body and a plurality of second connection branches. The second connection body is electrically connected to the laser. The plurality of second connection branches are all electrically connected to the side of the second connection body away from the laser, and the plurality of second connection branches are electrically connected to the plurality of third connectors in a one-to-one correspondence.

13. The projection device according to any one of claims 1-5, 9-10, and 12, characterized in that, The projection device further includes: at least two heat dissipation support pads, wherein at least one of the at least two heat dissipation support pads is located between the first conductive connection portion and the first mounting surface, and at least one of the at least two heat dissipation support pads is located between the first conductive connection portion and the second mounting surface.

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