Laser projection equipment

Abstract

The embodiment of the utility model belongs to the laser projection technology, and provides laser projection equipment, the laser projection equipment comprises at least two lasers, the at least two lasers are arranged side by side, each laser comprises a plurality of first connecting structures arranged at intervals, and the at least two first connecting structures are located on different horizontal lines; the at least two laser plates are arranged side by side, each laser plate comprises a plurality of second connecting structures arranged at intervals, the at least two first connecting structures are located on different horizontal lines, and the first connecting structures are electrically connected with the corresponding second connecting structures through connectors. The laser projection equipment provided by the utility model is relatively high in production efficiency and relatively low in cost.

Description

Technical Field

[0001] The embodiments of the present application relate to laser projection technology, and more particularly to a laser projection device. Background Art

[0002] Laser projection is a display technology that uses red, green and blue primary color lasers as light sources. It can truly reproduce the rich and bright colors of the objective world and provide more shocking expressiveness.

[0003] In the related art, a laser projection device includes an optical engine housing and an optical engine located in the optical engine housing, the optical engine includes at least two lasers and at least two flexible printed circuit boards, and the lasers are connected to an external power supply through the flexible printed circuit boards.

[0004] However, the manufacturing cost of flexible printed circuit boards is high, and the assembly process of flexible printed circuit boards is relatively complicated, which can easily lead to low production efficiency and increase failure rate and maintenance costs. Utility Model Content

[0005] The embodiment of the present application provides a laser projection device with high production efficiency and low cost.

[0006] The present application provides a laser projection device, including:

[0007] At least two lasers, at least two lasers are arranged side by side, the lasers include a plurality of first connection structures arranged at intervals, and at least two first connection structures are located on different horizontal lines;

[0008] At least two laser boards are arranged side by side, the laser board comprises a plurality of second connection structures arranged at intervals, and at least two second connection structures are located on different horizontal lines, and the first connection structure is electrically connected to the corresponding second connection structure through a connector.

[0009] In this way, the flexible circuit board can be eliminated, thereby improving production efficiency and reducing production costs.

[0010] In some embodiments of the present application, the connectors have the same length.

[0011] This is helpful to improve production efficiency.

[0012] In some embodiments of the present application, the laser includes four first connection structures arranged at intervals;

[0013] The laser board includes four second connection structures arranged at intervals;

[0014] The four first connection structures are electrically connected to the four second connection structures through four connectors.

[0015] In this way, the laser can be a three-color laser, which is beneficial to improving the picture quality of the laser projection device.

[0016] In some embodiments of the present application, along the first direction, side walls of two adjacent lasers abut against each other.

[0017] This helps save space.

[0018] In some embodiments of the present application, a fastener and a main housing are also included;

[0019] Two side walls of the laser board that are opposite to each other along a first direction are respectively provided with first openings, and two adjacent laser boards are arranged along the first direction with the first openings facing each other to form a mounting cavity;

[0020] The fastener is inserted into the main housing through the mounting cavity to connect the laser board and the main housing.

[0021] This is beneficial to saving space and facilitating the expansion and combination of laser boards.

[0022] In some embodiments of the present application, the first opening is semicircular.

[0023] This makes processing easier and helps reduce costs.

[0024] In some embodiments of the present application, two side walls of the laser board that are opposite to each other along the first direction are respectively provided with second openings, and two adjacent laser boards are arranged along the first direction with the second openings facing each other to form a first accommodation cavity;

[0025] A third connection structure is arranged in the first accommodating cavity. Before the laser boards are separated, two adjacent laser boards along the first direction are connected via the third connection structure.

[0026] This is conducive to close fitting between lasers.

[0027] In some embodiments of the present application, the first opening is located in the middle area of ​​the laser plate, and the second opening is close to the edge of the laser plate.

[0028] This helps to ensure the strength of the laser board.

[0029] In some embodiments of the present application, two side walls of the laser board that are opposite to each other along the second direction are respectively provided with third openings, and two adjacent laser boards are arranged along the second direction with the third openings facing each other to form a second accommodation cavity;

[0030] A fourth connection structure is provided in the second accommodating cavity, and before the laser plates are separated, two adjacent laser plates along the second direction are connected by the fourth connection structure;

[0031] The second direction is perpendicular to the first direction.

[0032] This helps to ensure the connection between the laser and the laser board.

[0033] In some embodiments of the present application, the laser board includes a routing area corresponding to the first connection structure, and along the first direction, a size of the routing area is not less than 2.5 mm.

[0034] This helps reduce wiring resistance and effectively reduce current loss. On the other hand, this wiring method can also effectively disperse current density, increase the heat dissipation capacity of the laser board, and reduce temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the implementation methods in the embodiments of the present application or the related technologies, the following is a brief introduction to the drawings required for use in the embodiments or the related technology descriptions. Obviously, the drawings described below are some embodiments of the present application, and a person skilled in the art can also obtain other drawings based on these drawings.

[0036] Figure 1 It is a schematic diagram of the arrangement of two lasers and two laser boards in the related art;

[0037] Figure 2 for Figure 1 Schematic diagram of the light spot formed by the two laser plates;

[0038] Figure 3 A schematic diagram of another arrangement of two lasers and two laser boards in the related art;

[0039] Figure 4 for Figure 3 Schematic diagram of the light spot formed by the two laser plates;

[0040] Figure 5 A schematic diagram of a first arrangement of two lasers and two laser boards in a laser projection device provided in an embodiment of the present application;

[0041] Figure 6 for Figure 5 Schematic diagram of the light spot formed by the two laser plates;

[0042] Figure 7 A schematic diagram of a second arrangement of two lasers and two laser boards in a laser projection device provided in an embodiment of the present application;

[0043] Figure 8 for Figure 5 Exploded diagram of

[0044] Fig. 9 A schematic diagram of the dimensions of a laser board in a laser projection device provided in an embodiment of the present application;

[0045] Fig.10 A wiring diagram of a laser board in a laser projection device provided in an embodiment of the present application;

[0046] Fig.11 It is a schematic diagram of the first appearance shape and panel assembly of a laser board in the related art;

[0047] Fig.12 The second appearance shape and panel assembly schematic diagram of the laser board in the related art;

[0048] Fig.13 This is a schematic diagram of the appearance and panel assembly of a laser board in a laser projection device provided in an embodiment of the present application.

[0049] Reference numerals:

[0050] 100-Laser;

[0051] 110- first connection structure;

[0052] 200-Laser board;

[0053] 210- second connection structure;

[0054] 220-wiring area;

[0055] 230-first opening;

[0056] 240 - second opening;

[0057] 250 - third opening;

[0058] 260-third connection structure;

[0059] 270- fourth connection structure;

[0060] 300-connector;

[0061] 400-Connection socket. DETAILED DESCRIPTION

[0062] In the related art, a plurality of first connection structures are arranged at intervals on the laser, and at least two of the first connection structures are located on different horizontal lines. A plurality of second connection structures are arranged at intervals on the laser board, and the second connection structures are located on the same horizontal line. Therefore, the spacing between the first connection structure and the corresponding second connection structure is different, and the device sizes required for the electrical connection between different first connection structures and second connection structures are different, which need to be distinguished and selected. Therefore, the connection efficiency is low, and the overall production efficiency of the laser projection equipment is low.

[0063] In order to solve the above technical problems, in the technical solution of the present application, the laser board includes a plurality of second connection structures arranged at intervals, and at least two first connection structures are located on different horizontal lines, the first connection structure is electrically connected to the corresponding second connection structure, and the spacing between each first connection structure and the corresponding second connection structure is the same. In this way, the spacing between the first connection structure and the second connection structure is the same, which is conducive to the versatility of the first connection structure and the second connection structure electrical connection device, thereby facilitating the improvement of the efficiency of the electrical connection and the improvement of the production efficiency of the laser projection equipment.

[0064] Lasers are scalable, and beam superposition technology can be used to use multiple lasers to meet the needs of different environments and application scenarios.

[0065] Figure 1 FIG. 1 is a schematic diagram of the arrangement of two lasers and two laser boards in the related art. Figure 2 for Figure 1 Schematic diagram of the light spot formed by the two laser plates.

[0066] See also Figure 1 and Figure 2 As shown, in the related art, the lasers are set at intervals and at a long distance. Since the light beam emitted by the laser is not a completely collimated beam, but has a certain divergence angle, the farther the laser is from the spot formation surface, the larger the spot. In an optical system, different spot sizes will affect the uniform light effect of the compound eye, thereby affecting the chromatic aberration. Therefore, the lasers are set at intervals and at a long distance, which will cause the light spots emitted by the two lasers to be large and small, with poor uniformity, which will affect the color of the picture.

[0067] Figure 3 FIG. 1 is another schematic diagram of an arrangement of two lasers and two laser boards in the related art. Figure 4 for Figure 3 Schematic diagram of the light spot formed by the two laser plates.

[0068] In order to solve the above technical problems, see Figure 3 and Figure 4 As shown, the inventors set the lasers relatively, which has the advantage that the spot size emitted by the lasers is more consistent and the uniform light effect is better, thereby providing better beam quality.

[0069] However, this arrangement requires more space, and accordingly, the heat dissipation volume of the laser is also required to be larger, which will lead to an increase in cost.

[0070] Based on this, the present application provides a laser projection device, wherein at least two lasers are arranged side by side, and the side walls of two adjacent lasers abut against each other, at least two laser boards are arranged side by side, and at least two lasers are electrically connected to at least two laser boards in a one-to-one correspondence. In this way, it is beneficial to improve the consistency of the spot size and the color effect of the picture. Moreover, it is beneficial to save space.

[0071] In order to make the purpose, implementation mode and advantages of the present application clearer, the exemplary implementation mode of the present application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0072] It should be noted that the brief description of terms in this application is only for the convenience of understanding the embodiments described below, and is not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their common and usual meanings.

[0073] In addition, the terms "include" and "have" and any variations thereof are intended to cover but not exclude inclusion, for example, a product or device comprising a list of components is not necessarily limited to those components expressly listed but may include other components not expressly listed or inherent to such products or devices.

[0074] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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, and therefore should not be understood as a limitation on the present application.

[0075] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0076] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0077] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0078] An embodiment of the present application provides a laser projection device, including a housing and an optical engine located in the housing.

[0079] Figure 5 A schematic diagram of a first arrangement of two lasers and two laser boards in a laser projection device provided in an embodiment of the present application, Figure 6 for Figure 5 Schematic diagram of the light spot formed by the two laser plates. Figure 7 A schematic diagram of a second arrangement of two lasers and two laser boards in a laser projection device provided in an embodiment of the present application, Figure 8 for Figure 5 Exploded diagram.

[0080] See also Figures 5 to 8 As shown, in some embodiments, the optical engine includes a laser 100 .

[0081] In some embodiments, at least two lasers 100 are arranged side by side.

[0082] In some embodiments, the laser 100 includes a plurality of first connection structures 110 disposed at intervals, and at least two first connection structures 110 are located on different horizontal lines.

[0083] In some embodiments, the optical engine includes a laser board 200 .

[0084] In some embodiments, at least two laser boards 200 are arranged side by side.

[0085] In some embodiments, the laser board 200 includes a plurality of second connection structures 210 disposed at intervals, and at least two second connection structures 210 are located on different horizontal lines.

[0086] In some embodiments, the first connection structure 110 is electrically connected to the corresponding second connection structure 210 .

[0087] In some embodiments of the present application, the optical engine includes a connector 300 .

[0088] The first connection structure 110 is electrically connected to the second connection structure 210 via the connector 300. In this way, the flexible circuit board can be eliminated, thereby improving production efficiency and reducing costs.

[0089] In some embodiments, the spacing between each first connection structure 110 and the corresponding second connection structure 210 is the same. This is conducive to the commonality of the first connection structure 110 and the second connection structure 210 electrical connection components, thereby facilitating the improvement of electrical connection efficiency and the production efficiency of the laser projection device.

[0090] In some embodiments, the lengths of the connectors 300 are the same, which is helpful to improve production efficiency.

[0091] In some embodiments of the present application, the laser 100 includes four first connection structures 110 arranged at intervals.

[0092] The laser board 200 includes four second connection structures 210 disposed at intervals.

[0093] The four first connection structures 110 and the four second connection structures 210 are electrically connected via four connectors 300 .

[0094] In some embodiments, the plurality of first connection structures 110 correspond to red, green, ground, and blue, and the outside world supplies power to red, blue, and green through the corresponding first connection structures 110 to drive the light source. In this way, the laser 100 can be a three-color laser, which is beneficial to improving the image quality of the laser projection device.

[0095] In some embodiments, the laser 100 may be a monochromatic laser, and the number of the first connection structures 110 may be two.

[0096] It should be noted that, in some embodiments, the side walls of two adjacent lasers 100 may have a gap, which may be caused by assembly or material tolerance, or may be intentionally designed. It is only necessary to ensure that the gap allows the connector not to bend.

[0097] In some embodiments, the side walls of two adjacent lasers 100 abut against each other, which is helpful to improve the consistency of the light spot size and the color effect of the picture, and is also helpful to save space.

[0098] It should be noted that, in some embodiments, two lasers 100 are arranged side by side along the width direction (the direction shown by the Y axis in the figure).

[0099] In some embodiments, at least two lasers 100 are arranged side by side along the length direction (the direction shown by the X axis in the figure). In this way, the number of lasers 100 that can be expanded is large.

[0100] In some embodiments, at least two lasers 100 are arranged side by side along the length direction and along the width direction. In this way, the number of lasers 100 that can be expanded is large.

[0101] In some embodiments, the optical engine includes: at least two laser boards 200 .

[0102] In some embodiments, at least two laser boards 200 are arranged side by side, and the laser 100 is electrically connected to the laser boards 200 .

[0103] In some embodiments, the laser board 200 may be a flexible printed circuit (FPC) to achieve electrical connection with external devices. FPC provides the necessary flexibility and spatial adaptability, but its manufacturing cost is relatively high and increases the complexity of assembly.

[0104] In order to solve the above technical problems, in some embodiments, the laser board 200 can be a rigid printed circuit board (PCB). The laser board 200 is electrically connected to the laser 100 through a connector 300. The laser board 200 and the connector 300 can replace the FPC connection solution, which can effectively reduce costs.

[0105] In some embodiments of the present application, the laser 100 includes a plurality of first connection structures 110, and the plurality of first connection structures 110 are arranged at intervals along a first direction, wherein the first direction is the direction indicated by the X axis in the figure.

[0106] For example, the first connection structure 110 can be a surface mount pad or a direct insertion pad, wherein the surface mount pad has lower cost and is more convenient for automated assembly. The direct insertion pad can ensure that the pins of the connector are stable and easy to control, and can enhance the mechanical stability of the system.

[0107] In some embodiments, the laser board 200 includes a plurality of second connection structures 210 , and the plurality of second connection structures 210 are arranged in one-to-one correspondence with the plurality of first connection structures 110 .

[0108] In some embodiments, the plurality of first connection structures 110 and the plurality of second connection structures 210 are electrically connected in a one-to-one correspondence through the connector 300. In this way, no complicated wiring is required.

[0109] For example, the second connection structure 210 may be a surface mount pad or a through-hole pad. Alternatively, the second connection structure 210 may be a pad in other forms.

[0110] In some embodiments, a connection line between each first connection structure 110 and the corresponding second connection structure 210 is parallel to the second direction.

[0111] In some embodiments of the present application, in order to improve the versatility of the connector 300 , the spacing between each first connection structure 110 and the corresponding second connection structure 210 is the same.

[0112] That is to say, the first connection structures 110 may not be located on the same straight line, and it is sufficient to ensure that the spacing between the first connection structures 110 and the corresponding second connection structures 210 is the same. In this way, there is no need to change the length of the connection, thereby improving the versatility of the connector 300, facilitating assembly, reducing costs, and increasing the versatility of the overall solution. Moreover, it is conducive to ensuring the directness and effectiveness of signal transmission.

[0113] In some embodiments, a surface mount pad is disposed at one end of the connector 300, and a plug-in pad is disposed at the other end.

[0114] It should be noted that the design of the connector 300 is diverse and can be selected according to different application environments, current carrying capacity, temperature resistance and material properties. Regardless of the shape, size or material, as long as it meets the basic weldability, good electrical conductivity and can withstand the current when the laser 100 is working, it can be used as an effective connector 300 solution, not just limited to the form described in this article.

[0115] Fig. 9 A schematic diagram of the dimensions of a laser board in a laser projection device provided in an embodiment of the present application.

[0116] See also Figures 5 to 9 As shown, in some embodiments, along the first direction, the size of the laser 100 is equal to the size a of the laser board 200. In this way, it is helpful to reduce the overall size along the first direction.

[0117] In some embodiments, the laser 100 may be a Qualas22 laser, which has the advantages of simple structure, small size, high brightness, good temperature stability, etc. At the same time, it is also scalable, and multiple lasers 100 can be used to meet the needs of different environments and application scenarios using beam superposition technology. This miniaturized and universal design not only saves space, but also effectively improves the portability and applicability of the system.

[0118] In some embodiments, the dimension of the laser 100 along the first direction (length direction) is 26 mm. The dimension of the laser board 200 along the first direction (length direction) is 26 mm.

[0119] See also Fig. 9 As shown, in some embodiments, the dimension d of the laser board 200 along the second direction (width direction) is 9-15 mm.

[0120] Exemplarily, the dimension d of the laser board 200 along the second direction is 14 mm, 10 mm or 12 mm.

[0121] Alternatively, the dimension d of the laser board 200 along the second direction is 10-12 mm.

[0122] Alternatively, the dimension d of the laser board 200 along the second direction is 9-14 mm.

[0123] Alternatively, the dimension d of the laser board 200 along the second direction is 9-11 mm.

[0124] It should be noted that, under the premise of the safety of the wiring of the laser board 200, the dimension d of the laser board 200 along the second direction is as small as possible, so as to meet the requirements of miniaturization design. Such size optimization not only saves space, but also improves the compactness and portability of the overall system.

[0125] Fig.10 This is a wiring diagram of a laser board in a laser projection device provided in an embodiment of the present application.

[0126] See also Fig.10 As shown, in some embodiments of the present application, the laser board 200 includes a routing area 220 corresponding to the first connection structure 110, and the size of the routing area 220 along the first direction is not less than 2.5 mm. That is, along the first direction, the minimum size e of the routing area 220 is not less than 2.5 mm.

[0127] It is understandable that this design is conducive to ensuring that each path has a current carrying capacity of up to 4.5A, reducing wiring resistance and effectively reducing current loss. On the other hand, this wiring method can also effectively disperse the current density, increase the heat dissipation capacity of the laser board 200, and reduce the board-level temperature.

[0128] In some embodiments, along the first direction, the minimum dimension e of the routing area 220 is not less than 3 mm.

[0129] In some embodiments, along the first direction, the minimum dimension e of the routing area 220 is not less than 3.5 mm.

[0130] In some embodiments, along the first direction, the minimum dimension e of the routing area 220 is 2.5 mm.

[0131] In some embodiments, along the first direction, the minimum dimension e of the routing area 220 is 2.8 mm.

[0132] In some embodiments, along the first direction, the minimum dimension e of the routing area 220 is 4 mm.

[0133] In some embodiments, the minimum copper width of the red, green, and blue traces is greater than 2.5 mm.

[0134] In some embodiments, a connection socket 400 is disposed on the laser board 200 .

[0135] See also Figure 5 As shown, in some embodiments of the present application, in order to reduce the size, along the first direction, the side walls of two adjacent lasers 100 abut against each other, and the side walls of two adjacent laser boards 200 abut against each other.

[0136] In some embodiments, the laser board 200 is located at one side of the laser 100 along the second direction, and the second connection structure 210 is close to the first connection structure 110 to facilitate connection with the connector 300 .

[0137] In some embodiments, to save space, the sidewalls of the laser 100 may abut against the sidewalls of the laser board 200 .

[0138] In some embodiments of the present application, the laser projection device further includes a fastener, and the fastener is used to fix the laser board 200 .

[0139] In some embodiments, the laser projection device further comprises a main housing, and the laser board 200 is fixed to the main housing by fasteners.

[0140] See also Figure 5 As shown, in some embodiments, two side walls of the laser board 200 opposite to each other along the first direction are respectively provided with first openings 230, and two adjacent laser boards 200 are arranged along the first direction, and the first openings 230 are opposite to each other, so as to form a mounting cavity. The fastener is inserted into the main housing through the mounting cavity to connect the laser board 200 with the main housing. In this way, it is conducive to saving space. Moreover, it is conducive to the combination and expansion of the laser board 200.

[0141] In some embodiments of the present application, the first opening 230 is semicircular, so that the processing cost is low. The fastener can be a screw, and the reliability of the connection is high.

[0142] In some embodiments of the present application, the first opening 230 is rectangular.

[0143] It should be noted that the laser board 200 is composed of multiple boards when it is received. The assembled parts are connected and aligned through a connecting structure, and need to be disassembled before actual use.

[0144] Fig.11 This is the first appearance shape and panel diagram of the laser board in the related technology.

[0145] See also Fig.11 As shown, in the related art, the laser plate 200 adopts a V-groove panelization method. This panelization method has the advantages of simple cutting and low cost. However, its precision is very low, and the width of the V-groove will cause loss to the size of a single laser plate 200, resulting in the size of the laser plate 200 being smaller than the theoretical value. In other words, during the splitting process, the laser plate 200 with the width of the V-groove will be cut off along the first direction, and the length of the laser plate 200 will become smaller. When splicing and expanding, the gap between the two adjacent laser plates 200 is large. In this way, the installation cavity formed by the fastener through the two first openings 230 is inserted into the main shell, and the size of the installation cavity does not match the fastener. The reliability of the fastener fixing the laser plate 200 is poor, and therefore, it is not conducive to splicing and expansion.

[0146] Fig.12 In the related technology, the second type of laser board comes from the appearance shape and panel diagram.

[0147] See also Fig.12 As shown, in the related art, the laser board 200 adopts a stamp hole paneling method. Although this method can ensure that the size of the laser board 200 is not affected, the burr edges generated after the paneling are large, which will further affect the combined assembly of the laser board 200, making it impossible to abut, thereby making the laser 100 unable to abut. When the laser 100 and the laser board 200 are connected, the connecting pins are prone to bending, thereby failing to meet the design requirements.

[0148] Fig.13 This is a schematic diagram of the appearance and panel assembly of a laser board in a laser projection device provided in an embodiment of the present application.

[0149] Based on the above technical issues, see Fig.13 As shown, in some embodiments of the present application, two side walls of the laser board 200 opposite to each other along the first direction are respectively provided with second openings 240 , and two adjacent laser boards 200 are arranged along the first direction with the second openings 240 opposite to each other to form a first accommodating cavity.

[0150] A third connection structure 260 is disposed in the first accommodating cavity.

[0151] Before the laser boards 200 are separated, two adjacent laser boards 200 along the first direction are connected via the third connection structure 260 .

[0152] When the components are separated, the third connection structure 260 is cut off, and the burrs generated by the third connection structure 260 are located in the second opening 240 , so as to not easily affect the abutment of the laser plate 200 and the laser 100 .

[0153] In some embodiments, the third connection structure 260 may be a connection rib.

[0154] In some embodiments of the present application, in order to ensure the strength of the laser board 200 , the first opening 230 is located in the middle area of ​​the laser board 200 , and the second opening 240 is close to the edge of the laser board 200 .

[0155] In some embodiments of the present application, two side walls of the laser board 200 opposite to each other along the second direction are respectively provided with third openings 250 , and two adjacent laser boards 200 are arranged along the second direction with the third openings 250 opposite to each other to form a second accommodation cavity.

[0156] In some embodiments, a fourth connection structure 270 is disposed in the second accommodating cavity.

[0157] Before the laser boards 200 are separated, two adjacent laser boards 200 along the second direction are connected via the fourth connection structure 270 .

[0158] When separating, the fourth connection structure 270 is cut off, and the burrs generated by the fourth connection structure 270 are located in the third opening 250 , so as not to affect the size of the laser board 200 and not to hinder the connection between the laser 100 and the laser board 200 .

[0159] The second direction is perpendicular to the first direction.

[0160] In some embodiments, the fourth connection structure 270 may be a connection rib.

[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

[0162] For the convenience of explanation, the above description has been made in conjunction with specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations can be obtained. The selection and description of the above embodiments are to better explain the principles and practical applications, so that those skilled in the art can better use the embodiments and various different variations of the embodiments suitable for specific use considerations.

Claims

1. A laser projection device, characterized in that: include: At least two lasers, at least two of the lasers are arranged side by side, the lasers include a plurality of first connection structures arranged at intervals, and at least two of the first connection structures are located on different horizontal lines; At least two laser boards, at least two of the laser boards are arranged side by side, the laser boards include a plurality of second connection structures arranged at intervals, and at least two of the second connection structures are located on different horizontal lines, and the first connection structure is electrically connected to the corresponding second connection structure through a connector.

2. The laser projection device according to claim 1, characterized in that: The connectors are of the same length.

3. The laser projection device according to claim 2, characterized in that: The laser comprises four first connection structures arranged at intervals; The laser board includes four second connection structures arranged at intervals; The four first connection structures and the four second connection structures are electrically connected through the four connectors.

4. The laser projection device according to any one of claims 1 to 3, characterized in that: The side walls of two adjacent lasers abut against each other.

5. The laser projection device according to any one of claims 1 to 3, characterized in that: Also included are fasteners and a main housing; Two side walls of the laser board that are opposite to each other along a first direction are respectively provided with first openings, and two adjacent laser boards are arranged along the first direction, and the first openings are opposite to each other, so as to form a mounting cavity; The fastener is inserted into the main housing through the installation cavity to connect the laser board and the main housing.

6. The laser projection device according to claim 5, characterized in that: The first opening is semicircular.

7. The laser projection device according to claim 5, characterized in that: Two side walls of the laser board that are opposite to each other along the first direction are respectively provided with second openings, and two adjacent laser boards are arranged along the first direction, and the second openings are opposite to each other, so as to form a first accommodation cavity; A third connection structure is disposed in the first accommodating cavity. Before the laser boards are separated, two adjacent laser boards along the first direction are connected via the third connection structure.

8. The laser projection device according to claim 7, characterized in that: The first opening is located in a middle area of ​​the laser board, and the second opening is close to an edge of the laser board.

9. The laser projection device according to claim 7, characterized in that: Two side walls of the laser board that are opposite to each other along the second direction are respectively provided with third openings, and two adjacent laser boards are arranged along the second direction, and the third openings are opposite to each other, so as to form a second accommodating cavity; A fourth connection structure is provided in the second accommodating cavity, and before the laser plates are separated, two adjacent laser plates along the second direction are connected by the fourth connection structure; The second direction is perpendicular to the first direction.

10. The laser projection device according to claim 5, characterized in that: The laser board includes a wiring area corresponding to the first connection structure, and along the first direction, a size of the wiring area is not less than 2.5 mm.

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