Projection device

Abstract

The utility model discloses a projection device, the projection device comprises at least two projection lamps and a base, the base comprises at least two connecting parts, the at least two connecting parts extend in different directions, and one connecting part is at least provided with one projection lamp. The mounting efficiency and the space utilization rate are improved.

Description

Technical Field

[0001] This application relates to the field of projection equipment technology, and in particular to a projection device. Background Technology

[0002] Projection devices utilize the principle of optical projection, employing a high-brightness light source to project the image structure (patterns or text content) on the projection element onto a wall, floor, or screen.

[0003] However, in related technologies, each base of the projection device is equipped with only one projection lamp. When a multi-projection lamp effect is required, multiple mounting bases are needed, and each mounting base requires installation space. This reduces installation efficiency and space utilization when multiple projection lamps are needed. Utility Model Content

[0004] This application provides a projection device that enables the installation of multiple projection lamps on a single base, thereby improving installation efficiency and space utilization.

[0005] This application provides a projection device, which includes at least two projection lamps and a base. The base includes at least two connecting parts, which extend in different directions. At least one projection lamp is mounted on each connecting part.

[0006] In some embodiments, the base includes:

[0007] A connector includes at least two connecting portions and an assembly portion, wherein at least two connecting portions are connected to the assembly portion;

[0008] A fastener is connected to the end of the assembly that is away from the projection lamp, and fixes the projection lamp to the mounting surface or an external device.

[0009] In some embodiments, the projection lamp is rotatably connected to the connecting portion.

[0010] In some embodiments, the connecting portion has a connection position for connecting to the projection lamp;

[0011] In the front-back direction of the projection device, the multiple connection positions are located on the same plane.

[0012] In some embodiments, the connector further includes:

[0013] A spherical portion is connected to the end of the connecting portion. The projection lamp includes a housing, and the housing is provided with a mounting groove, the groove wall of which is spherical.

[0014] It also includes a mounting component with a through hole, the diameter of which is smaller than the outer diameter of the spherical portion. The mounting component is detachably connected to the housing to rotatably fix the spherical portion in the mounting groove, and the connecting portion can extend outward from the through hole.

[0015] In some embodiments, the connector includes:

[0016] The main body includes the assembly part, the connecting part, and a hemispherical part connected to the connecting part; and

[0017] A hemispherical cover, which is detachably connected to the hemispherical portion to form the spherical portion.

[0018] In some embodiments, the hemispherical cover is screwed to the hemispherical portion.

[0019] In some embodiments, the housing includes;

[0020] Shell body;

[0021] Multiple arc-shaped connecting plates are arranged around and connected to the outer wall of the shell body to form the mounting groove with the shell body. The multiple arc-shaped connecting plates are arranged at intervals, and the end of the arc-shaped connecting plate away from the shell is provided with a constricted portion, so that the outer diameter of the groove opening of the mounting groove is smaller than the outer diameter of the spherical portion.

[0022] The through hole has inwardly protruding arc-shaped limiting parts on both sides of its hole wall.

[0023] In some embodiments, the mounting element has an internal thread, the arc-shaped connecting plate has an external thread, and the internal thread is threadedly connected to the external thread.

[0024] In some embodiments, the housing further includes multiple support ribs connected to the inner wall of the housing body and the arc-shaped connecting plate, the outer surfaces of the multiple support ribs being arc-shaped to form the bottom wall of the spherically shaped mounting groove.

[0025] In some embodiments, the fixing member is a grounding rod having mounting holes;

[0026] The assembly part includes multiple support plates, one side of which is connected to each other and the other side is set at an angle. The support plates are interference-fitted with the wall of the mounting hole.

[0027] In some embodiments, the fastener is a fixing seat, the fixing seat having a fixing surface that rests on the mounting surface;

[0028] The outer wall of the assembly part is provided with a first buckle, the fastener has an assembly hole, the wall of the assembly hole is provided with a second buckle, at least a portion of the assembly part extends into the assembly hole, and the first buckle and the second buckle are connected.

[0029] In some embodiments, the fixing base has a fixing plate with a fixing surface and fixing holes, through which fasteners can pass to fix the fixing plate relative to the mounting surface.

[0030] In some embodiments, the projection lamp includes:

[0031] The housing has a mounting cavity and a light-transmitting hole connecting the mounting cavity to the outside;

[0032] A light panel, installed in the mounting cavity, includes an emitting light source;

[0033] A projection element is mounted in the mounting cavity and positioned in the light emission direction of the emitting light source; and

[0034] A projection lens is installed in the mounting cavity and positioned in the light emission direction of the emitting light source;

[0035] The light emitted from the light source passes through the projection element and the projection lens and is emitted outward through the light-transmitting hole.

[0036] In some embodiments, the projection lamp further includes a spotlight cup, mounted on the lamp panel and positioned in the light emission direction of the emitting light source;

[0037] The projection element is mounted on the side of the spotlight cup opposite to the emitting light source.

[0038] In some embodiments, the projection element is a projection sheet;

[0039] The projection lamp also includes a pressure plate, which is fixedly connected to the spotlight cup to press the projection element onto the spotlight cup.

[0040] In some embodiments, the lamp panel has multiple emitting light sources, the projection element has multiple image structures, and the projection lens has multiple focusing parts, with one emitting light source corresponding to one image structure and one focusing part;

[0041] The projection lamp also includes a motor, the main body of which is mounted on the back of the lamp panel, and the drive shaft of the motor passes through the lamp panel and is rotatably connected to the projection lens.

[0042] The plurality of the emitting light sources, the plurality of the image structures, and the focusing part are arranged in a circular pattern along the circumference of the drive shaft.

[0043] In some embodiments, the connector further includes:

[0044] A first connecting arm is connected to the assembly part at its middle part, and two connecting parts are formed at opposite ends of the first connecting arm, wherein the first connecting arm is arc-shaped.

[0045] In some embodiments, the connector further includes:

[0046] The second connecting arm has one end connected to the connection point where the first connecting arm connects to the assembly part, and the other end of the second connecting arm forms the connecting part.

[0047] In some embodiments, the first connecting arm and / or the second connecting arm are provided with a plurality of first reinforcing ribs spaced apart in the extending direction;

[0048] And / or, the first connecting arm and / or the second connecting arm are provided with a plurality of second reinforcing ribs extending in the extension direction.

[0049] The projection device based on the embodiments of this application includes a base comprising at least two connecting portions extending in different directions, thereby enabling the mounting of multiple projection lamps on a single base and allowing different projection lamps to project at different positions and angles. Therefore, the projection device of this application can achieve a wider projection coverage, meeting various projection needs. Furthermore, the arrangement of multiple projection lamps can produce brighter and clearer images, thereby improving projection quality. Multiple projection lamps can also be superimposed for projection, achieving richer colors and a greater sense of depth. In addition, only one base needs to be installed and fixed to secure multiple projection lamps in the desired positions, improving installation efficiency and space utilization. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0051] Figure 1 A schematic diagram of the structure of the first projection device provided in this application;

[0052] Figure 2 A cross-sectional schematic diagram of the first projection device provided in this application;

[0053] Figure 3 An exploded view of the first projection device provided in this application;

[0054] Figure 4 A schematic diagram of the structure of the second projection device provided in this application;

[0055] Figure 5 A cross-sectional schematic diagram of the first projection device provided in this application;

[0056] Figure 6 A schematic diagram of the third projection device provided in this application;

[0057] Figure 7 A schematic diagram of the fourth projection device provided in this application;

[0058] Figure 8 A schematic diagram of the structure of the connector for the first projection device provided in this application;

[0059] Figure 9 A structural schematic diagram of a fastener provided in this application;

[0060] Figure 10 A cross-sectional schematic diagram of a projection lamp provided in this application;

[0061] Figure 11 An exploded view of a projection lamp provided in this application;

[0062] Figure 12 A schematic diagram of the structure of an installation component provided in this application.

[0063] Description of Figure Numbers:

[0064] 1. Projection device; 10. Base; 110. Connector; 111. Main body; 1111. Connecting part; 1112. Assembly part; 1113. Support plate; 1114. First swivel; 1115. First connecting arm; 1116. Second connecting arm; 1117. First reinforcing rib; 1118. Second reinforcing rib; 112. Spherical part; 1121. Hemispherical part; 1122. Hemispherical cover; 120. Fixing member; 121. Grounding rod; 121a. Mounting hole; 122. Fixing base; 122a. Assembly hole; 1221. Fixing surface; 1222. Fixing plate; 1230. Fixing hole; 1240, second swivel; 20, projection lamp; 210, housing; 210a, mounting groove; 210b, mounting cavity; 210c, light-passing hole; 211, housing body; 212, arc-shaped connecting plate; 2121, constricted opening; 213, support rib; 220, lamp plate; 221, mounting plate; 222, emitting light source; 230, slide; 240, projection lens; 2401, focusing part; 250, spotlight cup; 260, pressure plate; 270, motor; 280, sealing glass; 290, sealing ring; 30, mounting part; 30a, through hole; 310, arc-shaped limiting part.

[0065] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0066] 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.

[0067] Where the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0068] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0069] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0070] Please see Figures 1 to 7 This application proposes a projection device 1, including at least two projection lamps 20 and a base 10. The base 10 supports and fixes the projection lamps 20, ensuring that the projection lamps 20 can stably project images. The base 10 includes at least two connecting portions 1111, which extend in different directions, and each connecting portion 1111 is equipped with at least one projection lamp 20. Since the projection lamps 20 are mounted on different connecting portions 1111, and these connecting portions 1111 extend in different directions, multiple projection lamps 20 can be mounted on one base 10, and different projection lamps 20 can be projected at different positions and angles. Therefore, the projection device 1 of this application can achieve a wider projection coverage, meet various projection needs, and the arrangement of multiple projection lamps 20 can produce brighter and clearer images, thereby improving projection quality; it can also use multiple projection lamps 20 to perform superimposed projection, achieving richer colors and a sense of depth. Furthermore, the connecting part 1111 of this application is detachably connected to the projection lamp 20, so that the user can install the projection lamp 20 on one or more connecting parts 1111 as needed.

[0071] Please see Figure 2 , Figure 3 as well as Figure 5 The base 10 includes a connector 110 and a fixing member 120. The connector 110 includes an assembly part 1112 and at least two connecting parts 1111, with the at least two connecting parts 1111 connected to the assembly part 1112. The fixing member 120 is connected to the assembly part 1112 and fixes the projection lamp 20 to the mounting surface or an external device.

[0072] Please see Figures 1 to 5In some embodiments, there are two connecting portions 1111, and the connector 110 further includes a first connecting arm 1115. The middle portion of the first connecting arm 1115 is connected to the assembly portion 1112, and the opposite ends of the first connecting arm 1115 form two connecting portions 1111. This improves the stability of the connection between the two connecting portions 1111 and the assembly portion 1112. Of course, in other embodiments, a connecting portion 1111 can be formed by a single connecting arm, and the connecting arm can be connected to the assembly portion 1112 alone, or at least a portion of adjacent connecting arms can be connected together. Optionally, the first connecting arm 1115 is arc-shaped, which increases the contact area with the assembly portion 1112 and also has a higher aesthetic appeal. Of course, in other embodiments, the first connecting arm 1115 can also be V-shaped.

[0073] Please see Figure 6 and Figure 7 In some embodiments, the connector 110 further includes a second connecting arm 1116, one end of which is connected to the connection point where the first connecting arm 1115 is connected to the assembly part 1112, and the other end of which forms a connecting part 1111. In this way, three connecting parts 1111 can be provided on the connector 110, thereby allowing three projection lamps 20 to be installed.

[0074] Please refer to the following: Figure 8 In some embodiments, the first connecting arm 1115 and / or the second connecting arm 1116 are provided with a plurality of first reinforcing ribs 1117 spaced apart in the extending direction; the first connecting arm 1115 and / or the second connecting arm 1116 are provided with a plurality of second reinforcing ribs 1118 extending in the extending direction. The first reinforcing ribs 1117 and the second reinforcing ribs 1118 can improve the rigidity and stability of the connecting arm, prevent the connecting arm from bending or deforming under force, and improve the stability of supporting the projection lamp 20.

[0075] It should be noted that the connector 110 and the fastener 120 can be integrally molded components, meaning they can be made from the same material (such as metal or plastic) in a single process through injection molding, casting, or other processes. This offers advantages such as compact structure, simple manufacturing, and low cost. Alternatively, the connector 110 and the fastener 120 can be separate structures, meaning they can be made from the same or different materials or using the same or different manufacturing processes, and connected by a detachable connection. This allows for the replacement of different fasteners 120 as needed.

[0076] Please see Figures 1 to 3 as well as Figure 6In some embodiments, the fixing member 120 is a ground insertion rod 121. One end of the ground insertion rod 121 has a mounting hole 121a, and the other end is used to insert into the ground. The ground insertion rod 121 can provide a stable support point, making it easy to fix the projector lamp 20 in different scenarios, and can effectively prevent the projector lamp 20 from shaking or tilting during use. In addition, the projector lamp 20 can be fixed at different heights by changing the length of the ground insertion rod 121, which is convenient for users.

[0077] Please refer to the following: Figure 8 The assembly part 1112 includes multiple support plates 1113. One side of each support plate 1113 is connected to form a common connection area, while the other side is set at an angle. The size and direction of these angles can be the same or different, but overall they collectively form an approximately circular or annular outer contour. The multiple support plates 1113 are interference-fitted with the wall of the mounting hole 121a. This connection method is simple and robust, allowing for easy disassembly and reinstallation when maintenance or replacement of the projection lamp 20 is required.

[0078] Please see Figure 4 , Figure 5 as well as Figure 7 In some embodiments, the fastener 120 is a fixing seat 122, which has a fixing surface 1221 that rests on a mounting surface (desktop, wall, floor, etc.). The outer wall of the assembly part 1112 is provided with a first buckle 1114, and the fastener 120 has an assembly hole 122a. A second buckle 1240 is provided on the wall of the assembly hole 122a. At least a portion of the assembly part 1112 is inserted into the assembly hole 122a, and the first buckle 1114 and the second buckle 1240 are connected by a buckle. During installation, the user only needs to insert the assembly part 1112 into the assembly hole 122a and rotate it to the appropriate position to achieve a secure connection. This installation method requires no additional tools or fasteners, greatly improving installation efficiency. Similar to the installation process, disassembly also only requires a rotational action to easily separate the assembly part 1112 and the fastener 120. This design facilitates equipment maintenance and replacement, reducing maintenance costs and time.

[0079] Please refer to the following: Figure 9 Furthermore, the mounting base 122 includes a mounting plate 1222, which has a mounting surface 1221 and mounting holes 1230. Fasteners (such as bolts and screws) pass through the mounting holes 1230 and are fixed to the mounting surface, ensuring a secure connection between the mounting base 122 and the mounting surface. This connection method has high tensile and shear strength, can withstand large external forces and vibrations, and ensures the stability and safety of the projection lamp 20.

[0080] Please see Figure 10 and Figure 11 The projection lamp 20 includes a housing 210, a lamp panel 220, a projection element, and a projection lens 240. The housing 210 has a mounting cavity 210b and a light-transmitting hole 210c communicating with the outside. The lamp panel 220 is mounted in the mounting cavity 210b and includes an emitting light source 222. The projection element is mounted in the mounting cavity 210b and is positioned in the light-emitting direction of the emitting light source 222. The projection lens 240 is mounted in the mounting cavity 210b and is positioned in the light-transmitting direction of the emitting light source 222. The light emitted by the emitting light source 222 passes through the projection element and the projection lens 240 and is emitted outward through the light-transmitting hole 210c.

[0081] Please see Figure 10 and Figure 11 The housing 210 serves as the outer shell of the projection lamp 20, protecting the internal components from external environmental interference. Furthermore, the outer surface of the housing 210 can be provided with multiple protrusions to increase the contact area between the housing 210 and the air, thereby improving heat dissipation. The housing 210 may include a rear shell and a front shell. The rear shell has a receiving groove with an opening on one side, and the front shell is threaded to the rear shell and seals the opening of the receiving groove. The front shell may be provided with a light-transmitting hole 210c. A sealing glass 280 can be installed at the light-transmitting hole 210c to seal the mounting cavity 210b, preventing dust or moisture from entering the mounting cavity 210b. Furthermore, sealing rings 290 can be provided on both opposite sides of the sealing glass 280; that is, a sealing ring 290 can be provided between the sealing glass 280 and the front shell, and a sealing ring 290 can be provided between the sealing glass 280 and the rear shell after the front shell and rear shell are fixed. In some embodiments, the housing 210 may also include a rear cover, a middle shell, and a front cover. The middle shell has a cylindrical structure with openings at both ends. The rear cover and the front cover are respectively installed at both ends of the middle shell and seal the two openings. The front cover may be provided with a light-transmitting hole 210c.

[0082] Please see Figure 11 The light panel 220 includes a mounting plate 221 and an emitting light source 222 mounted on the mounting plate 221. The emitting light source 222 can be an LED lamp bead. The projection element can carry specific images, image structures, or text. The projection element can be in the form of a lamp sheet, film, liquid crystal light valve, etc. Specifically, the light emitted from the emitting light source 222 passes through the projection element and outputs image light, which is then directed towards the projection lens 240. The projection lens 240 is used to magnify the image light and project it (e.g., onto a projection surface such as the ground, wall, or screen to form an image).

[0083] Furthermore, the projection lens 240 may consist of only a convex lens. In other embodiments, the projection lens 240 may include multiple lenses. For example, the projection lens 240 may include a first lens, a second lens, and a third lens arranged coaxially along the direction of emitted light. The first lens and the third lens both have positive optical power, while the second lens has negative optical power; this application does not impose any limitations on this. The structure and principle of the projection lens 240 have been disclosed in related technologies and will not be repeated here.

[0084] Please see Figure 10 and Figure 11 In some embodiments, the projection lamp 20 further includes a spool cup 250, which is mounted on a mounting plate 221 and positioned in the light-emitting direction of the emitting light source 222. The projection element is mounted on the side of the spool cup 250 facing away from the emitting light source 222. The spool cup 250 and the mounting plate 221 can be connected by screws. The spool cup 250 can also be called a reflector, condenser reflector, or light cup, and is mainly used to reflect and focus light. It has opposing inlet and outlet ports. The inlet port is smaller than the outlet port, so that the focusing cavity inside the spool cup 250 has a trapezoidal structure. Additionally, the inner wall of the spool cup 250 can be provided with a reflective layer to reflect and concentrate the incident light, making the light emitted approximately uniformly and parallelly. This reduces the light divergence range, forming small-angle light with good brightness uniformity, allowing as much of the emitted light as possible to pass through the projection element and projection lens 240, resulting in a better projected image.

[0085] It should be noted that the aforementioned reflective layer can be formed by uniformly coating reflective paint onto the inner wall surface of the spotlight cup 250 to form a reflective coating; it can also be a reflective film attached to the inner wall surface of the spotlight cup 250; or it can be formed by depositing reflective materials (such as aluminum, silver, silicon dioxide, or other materials) onto the inner wall surface of the spotlight cup 250 using coating techniques such as vapor deposition, magnetron sputtering, physical vapor deposition, or chemical vapor deposition to form a reflective layer on the cavity wall of the focusing cavity.

[0086] Please see Figure 10 and Figure 11In some embodiments, the projection element is a projection sheet 230; the projection lamp 20 also includes a pressure plate 260, which is fixedly connected to the swivel cup 250 to press the projection sheet 230 onto the swivel cup 250. By fixing the pressure plate 260 to the swivel cup 250, the pressure plate 260 can firmly press the projection sheet 230 onto the swivel cup 250, preventing it from moving or loosening during projection, ensuring the clarity and stability of the projected image, and avoiding image distortion or blurring caused by changes in the position of the projection sheet 230. It can also ensure close and uniform contact between the projection sheet 230 and the swivel cup 250, reducing light leakage or scattering between the two, and improving light utilization and projection effect.

[0087] Understandably, the slide 230 has an image structure. Furthermore, the pressure plate 260 has corresponding clearance holes for the image structure. The pressure plate 260 and the spotlight cup 250 press against the edge of the slide 230, ensuring the image structure remains flat during projection and preventing image distortion or blurring caused by the slide 230 curling or deforming. The clearance holes also prevent internal reflection or scattering of light from the pressure plate 260, which could reduce light utilization efficiency, darken the projected image, or cause light spots. The pressure plate 260 can be made of polymethyl methacrylate (PMMA), polystyrene (PS), polycarbonate (PC), or glass, materials that offer high light transmittance, good heat resistance, and impact resistance.

[0088] Please see Figure 11 In some embodiments, the mounting plate 221 may be equipped with multiple emitting light sources 222, the projection sheet 230 may have multiple image structures, and the projection lens 240 may have multiple focusing parts 2401. In the direction of light emission, one emitting light source 222 corresponds to one image structure and one focusing part 2401. It should be noted that the focusing part 2401 here may be multiple protruding structures provided on a lens. The projection lamp 20 also includes a motor 270, the main body of which is mounted on the back of the mounting plate 221, and the drive shaft of the motor 270 passes through the mounting plate 221 and is rotatably connected to the projection lens 240. The multiple emitting light sources 222, multiple image structures, and focusing parts 2401 are arranged circumferentially in the circumferential direction of the drive shaft. The motor 270 drives the projection lens 240 to rotate, so that the originally static image structure light can present a dynamic effect, increasing the interest and viewing experience of the projection. Furthermore, the rotation speed, direction, and rotation time of the motor 270 can all be controlled by programming, enabling the projection lamp 20 to dynamically project according to preset animation effects, thus meeting diverse application needs.

[0089] Furthermore, the mounting plate 221 of the lamp board 220 can be a circuit board, and the projection lamp 20 also includes a conductive wire. One end of the conductive wire is electrically connected to the circuit board, and the other end is connected to a plug, so that it can be used with an external power supply to power the emitting light source 222 and the motor 270.

[0090] In some embodiments, the projection lamp 20 is rotatably connected to the connecting part 1111, which allows the projection lamp 20 to rotate freely in multiple directions, thereby making it easy to adjust its projection angle and position.

[0091] Furthermore, the connecting part 1111 has a connection position for connecting to the projection lamp 20; in the front-rear direction of the projection device 1, multiple connection positions are located on the same plane. Since all the projection lamps 20 are located on the same plane, their projected light rays will not block each other, ensuring that each projection lamp 20 can independently and completely display its projected image structure or light effect. Moreover, since light obstruction is avoided, there is no need to frequently adjust the position or angle of the projection lamps 20 during the debugging process, thereby saving debugging time.

[0092] Please refer to the following: Figure 2 , Figure 3 as well as Figure 8 In some embodiments, the connector 110 further includes a spherical portion 112, which is connected to the end of the connector 1111. The housing 210 is provided with a mounting groove 210a, the wall of which is spherical. The projection device 1 of this application also includes a mounting member 30, which is provided with a through hole 30a. The diameter of the through hole 30a is smaller than the outer diameter of the spherical portion 112. The mounting member 30 is detachably connected to the housing 210 so that the spherical portion 112 is rotatably fixed in the mounting groove 210a, and the connector 1111 can extend outward from the through hole 30a.

[0093] The spherical part 112 is connected to the end of the connecting part 1111 and is rotatably fixed in the mounting groove 210a of the housing 210. This allows the connecting part 1111 to rotate freely within a certain range, enabling the projection lamp 20 to easily adjust the projection angle and achieve multi-angle projection to meet the needs of different scenarios. Furthermore, the wall of the mounting groove 210a is spherically shaped and fits tightly with the spherical part 112, ensuring the stability of the connecting part 110 during rotation. The mounting part 30 is provided with a through hole 30a, the diameter of which is smaller than the outer diameter of the spherical part 112, effectively preventing the spherical part 112 from falling off during installation and improving the reliability of the connection.

[0094] Please see Figure 8The connector 110 includes a main body 111 and a hemispherical cover 1122. The main body 111 includes the aforementioned assembly part 1112, connecting part 1111, and a hemispherical part 1121 connected to the connecting part 1111. The hemispherical cover 1122 is detachably connected to the hemispherical part 1121 to form a spherical part 112. It is understood that since the diameter of the through hole 30a of the mounting member 30 is smaller than the outer diameter of the spherical part 112, the complete spherical part 112 cannot be directly passed through the through hole 30a. In this case, the hemispherical part 1121 (as part of the spherical part 112) can first be passed through the through hole 30a. After the hemispherical part 1121 passes through the through hole 30a, the hemispherical cover 1122 is then fixed relative to the hemispherical part 1121 to form a complete spherical part 112. This step-by-step installation method simplifies the installation process and solves the problem that the spherical part 112 is too large to pass through the through hole 30a. Of course, in other embodiments, the mounting member 30 can be configured as a split structure. For example, the mounting member 30 can be designed as two parts, which surround and fix together on both sides of the connecting part 1111. This application does not limit this.

[0095] Optionally, the hemispherical cover 1122 is screwed to the hemispherical portion 1121. This connection method is simple and has high stability. Of course, in other embodiments, a snap-fit ​​connection can also be used.

[0096] Alternatively, the housing 210 of the projection lamp 20 is connected to a spherical part 112, and the end of the connecting part 1111 is formed with a mounting groove 210a. Here, this application does not limit the specific connection method between the projection lamp 20 and the housing 210.

[0097] Please see Figure 10 and Figure 11The housing 210 includes a main body 211 and multiple arc-shaped connecting plates 212. The multiple arc-shaped connecting plates 212 are arranged around and connected to the outer wall of the main body 211 to form a mounting groove 210a. The spaced arrangement of the arc-shaped connecting plates 212 allows them to undergo a certain degree of elastic deformation when subjected to external force. When the spherical part 112 enters the mounting groove 210a, the arc-shaped connecting plates 212 can slightly expand outward to accommodate the outer diameter of the spherical part 112, thereby ensuring that the spherical part 112 can be smoothly embedded. The end of the arc-shaped connecting plate 212 away from the housing 210 is provided with a constricted portion 2121. The constricted portion 2121 acts as a "clasp". Once the spherical part 112 is fully inserted into the mounting groove 210a, the constricted portion 2121 will tightly hold the spherical part 112, preventing it from accidentally detaching from the mounting groove 210a. Optionally, the mounting component 30 is provided with an internal thread, and the arc-shaped connecting plate 212 is provided with an external thread, with the internal thread and the external thread being threadedly connected. The advantages of this arrangement are twofold: firstly, it facilitates disassembly; and secondly, the mounting component 30 can provide support to the connecting plate on the outside of the arc-shaped connecting plate 212, thereby improving the stability of the arc-shaped connecting plate 212 in fixing the spherical part 112.

[0098] Please see Figure 12 Furthermore, the through hole 30a on the mounting component 30 has inwardly protruding arc-shaped limiting portions 310 on opposite sides of the hole wall. The arc-shaped limiting portions 310 can limit the rotation range of the spherical portion 112 within the mounting groove 210a, preventing it from rotating excessively or deviating from the predetermined position, ensuring the stability and accuracy of the projection lamp 20 after installation, and avoiding projection deviation or equipment damage caused by improper rotation.

[0099] Please see Figure 10 The housing 210 also includes multiple support ribs 213 connected to the inner walls of the housing body 211 and the arc-shaped connecting plate 212. The outer surfaces of the support ribs 213 are arc-shaped to form the bottom wall of the spherical mounting groove 210a. The support ribs 213 connected to the inner walls of the housing body 211 and the arc-shaped connecting plate 212 can improve the stability of the connection between the housing body 211 and the arc-shaped connecting plate 212. Moreover, the support ribs 213 can form a mounting groove 210a that can be easily formed in a spherical manner, and the support ribs 213 can provide uniform support force, reducing the risk of deformation and damage to the housing 210 under stress.

[0100] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0101] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A projection device (1), characterized in that, include: At least two projector lamps (20); as well as Base (10), including: A connector (110) includes at least two connecting portions (1111) and an assembly portion (1112), wherein at least two of the connecting portions (1111) are connected to the assembly portion (1112), and the at least two connecting portions (1111) extend in different directions, and at least one of the projection lamps (20) is mounted on one of the connecting portions (1111); and A fastener (120) is connected to the end of the assembly (1112) away from the projection lamp (20) and fixes the projection lamp (20) to the mounting surface or external device.

2. The projection device (1) as claimed in claim 1, characterized in that, The projection lamp (20) is rotatably connected to the connecting part (1111).

3. The projection device (1) as described in claim 2, characterized in that, The connecting part (1111) has a connection position for connecting to the projection lamp (20); In the front-back direction of the projection device (1), the multiple connection positions are located on the same plane.

4. The projection device (1) as described in claim 2, characterized in that, The connector (110) further includes: A spherical part (112) is connected to the end of the connecting part (1111). The projection lamp (20) includes a housing (210), and the housing (210) is provided with a mounting groove (210a). The groove wall of the mounting groove (210a) is spherically shaped. It also includes a mounting member (30) having a through hole (30a) with a diameter smaller than the outer diameter of the spherical part (112). The mounting member (30) is detachably connected to the housing (210) to rotatably fix the spherical part (112) in the mounting groove (210a), and the connecting part (1111) can extend outward from the through hole (30a).

5. The projection device (1) as described in claim 4, characterized in that, The connector (110) includes: The main body (111) includes the assembly part (1112), the connecting part (1111), and a hemispherical part (1121) connected to the connecting part (1111); and A hemispherical cover (1122) is detachably connected to the hemispherical portion (1121) to form the spherical portion (112); And / or, the housing (210) includes; Shell body (211); Multiple arc-shaped connecting plates (212) are arranged around and connected to the outer wall of the shell body (211) to form the mounting groove (210a) with the shell body (211). The multiple arc-shaped connecting plates (212) are arranged at intervals, and the end of the arc-shaped connecting plate (212) away from the shell (210) is provided with a constricted portion (2121) so that the outer diameter of the groove opening of the mounting groove (210a) is smaller than the outer diameter of the spherical portion (112). The through hole (30a) has inwardly protruding arc-shaped limiting parts (310) on both sides of its hole wall.

6. The projection device (1) as claimed in claim 1, characterized in that, The fixing member (120) is a ground insertion rod (121), which has a mounting hole (121a); The assembly part (1112) includes a plurality of support pieces (1113), one side of the plurality of support pieces (1113) is connected to each other, and the other side is set at an angle. The support pieces (1113) are interference-fitted with the wall of the mounting hole (121a). And / or; the fastener (120) is a fixing seat (122), the fixing seat (122) having a fixing surface (1221) which is supported on the mounting surface; The outer wall of the assembly part (1112) is provided with a first buckle (1114), the fastener (120) has an assembly hole (122a), the wall of the assembly hole (122a) is provided with a second buckle (1240), at least a portion of the assembly part (1112) extends into the assembly hole (122a), and the first buckle (1114) and the second buckle (1240) are buckled together.

7. The projection device (1) as claimed in claim 1, characterized in that, The projection lamp (20) includes: The housing (210) has a mounting cavity (210b) and a light-transmitting hole (210c) connecting the mounting cavity (210b) and the outside; A lamp panel (220) is installed in the mounting cavity (210b) and includes an emitting light source (222); A projection element is mounted in the mounting cavity (210b) and positioned in the light-emitting direction of the emitting light source (222); and A projection lens (240) is installed in the mounting cavity (210b) and positioned in the light emission direction of the emitting light source (222); The light emitted by the light source (222) passes through the projection element, the projection lens (240), and is emitted outward through the light-transmitting hole (210c).

8. The projection device (1) as claimed in claim 7, characterized in that, The projection lamp (20) also includes: A spotlight cup (250) is mounted on the lamp plate (220) and positioned in the light-emitting direction of the emitting light source (222); and Pressure plate (260); The projection element is a projection sheet (230), and the pressure plate (260) is fixedly connected to the spotlight cup (250) to press the projection element onto the side of the spotlight cup (250) away from the emitting light source (222).

9. The projection device (1) as claimed in claim 7, characterized in that, The lamp panel (220) has multiple emitting light sources (222), the projection element has multiple image structures, and the projection lens (240) has multiple focusing parts (2401). One emitting light source (222) corresponds to one image structure and one focusing part (2401). The projection lamp (20) also includes a motor (270), the main body of which is mounted on the back of the lamp plate (220), and the drive shaft of the motor (270) passes through the lamp plate (220) and is rotatably connected to the projection lens (240). The plurality of the emitting light sources (222), the plurality of the image structures, and the focusing part (2401) are arranged in a circular pattern in the circumferential direction of the drive shaft.

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