A projection lamp assembly and vehicle

Abstract

The present application belongs to the technical field of vehicle accessories, and provides a projection lamp assembly and a vehicle, the projection lamp assembly comprising: a transmission assembly and a projection assembly, the projection assembly comprising a plurality of film pieces; the transmission assembly comprising a driving shaft and a driven shaft; the driving shaft comprising a first driving part and a second driving part distributed along an axial direction; the driven shaft comprising a first driven part and a second driven part distributed along an axial direction; the second driving part and the second driven part being linked to form an intermittent movement mechanism, and the first driving part and the first driven part being linked to form an intermittent rotation mechanism.Compared with the prior art, the present application integrates the transmission assembly and the projection assembly, so that the plurality of film pieces can be automatically switched, not only enriching the number of projectable images, but also the switching process of the projection image being accompanied by the changing effects of zooming and focusing, so that the switching of the projection image is not conspicuous, and the user experience is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle accessories, and in particular relates to a projection lamp assembly and a vehicle. Background Art

[0002] In the existing field of projection technology, projection lamps, as one of the core components, are widely used in various scenarios, including but not limited to home entertainment, commercial displays, educational venues, and vehicle interiors. Traditional projection lamp designs are usually focused on projecting a single image, that is, they can only display one preset image or pattern at a time. The design concept of this traditional projection lamp is based on its main function - to project specific content clearly and stably onto the screen. Therefore, it is often equipped with only a fixed film or a limited set of replaceable transparencies / templates. If the user needs to change the projected content, these films need to be manually replaced, which is a cumbersome and time-consuming process.

[0003] However, with the diversification of application scenarios and the improvement of user experience requirements, the demand for the ability to quickly switch between different image content is growing. For example, when a vehicle door is opened, it is desirable to automatically cycle through multiple projection images to attract the customer's attention. However, most current projection devices on the market are still limited to projecting a single image at a time, failing to meet these requirements for flexibility and efficiency.

[0004] Furthermore, existing projection devices, even those with a certain degree of multi-image switching capability, often suffer from complex structures and inconvenient operation. For example, some devices use robots or other automated devices to change film, but this not only increases equipment cost and size but also reduces system reliability and stability. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a projection lamp assembly and a vehicle in view of the current status of the existing technology.

[0006] The technical solution adopted by the present invention to solve the above technical problems is as follows: a projection lamp assembly is provided, comprising: a projection assembly, which includes a light source, an illumination lens group, a film assembly, and an imaging lens group along the optical axis; the film assembly includes a bracket and a plurality of film sheets, the plurality of film sheets are arranged at intervals along the circumference of the bracket, and the end surfaces of the plurality of film sheets are in the same plane; the film assembly has a use position and an image switching position;

[0007] a transmission assembly comprising a drive shaft and a driven shaft fixedly connected to the bracket;

[0008] The drive shaft includes a first drive portion and a second drive portion distributed along the axial direction;

[0009] The driven shaft includes a first driven portion and a second driven portion distributed along the axial direction;

[0010] The second driving part and the second driven part are linked to form an intermittent moving mechanism, and the first driving part and the first driven part are linked to form an intermittent rotating mechanism;

[0011] The movement stroke of the driven shaft includes a continuous zoom stroke, an image switching stroke and a focusing stroke; wherein,

[0012] When in the zoom stroke, the driving shaft rotates and drives the driven shaft and the film assembly to move axially through the second driving part and the second driven part, so that the film assembly moves from the use position to the image switching position;

[0013] When in the image switching stroke, the driving shaft rotates and drives the driven shaft and the film assembly to rotate through the first driving part and the first driven part, thereby switching the film to enable the projection assembly to change the projection pattern;

[0014] When in the focusing stroke, the driving shaft rotates and drives the driven shaft and the film assembly to move axially through the second driving part and the second driven part, so that the film assembly moves from the image switching position to the use position.

[0015] In the above-mentioned projection lamp assembly, the intermittent rotation mechanism is a groove wheel mechanism, the first driven part is a driven groove arranged on the driven shaft, the first driving part is a driving rod arranged on the driving shaft, the axial direction of the driving rod is arranged parallel to the axis of the driving shaft, and the driving rod is movably inserted in the driven groove.

[0016] In the above-mentioned projection lamp assembly, the intermittent rotation mechanism is an incomplete gear mechanism, the first driven portion is a first convex tooth portion provided on the outer periphery of the driven shaft, and the first driving portion is a second convex tooth portion provided on the outer periphery of the driving shaft;

[0017] When the driving shaft drives the driven shaft to move axially, the first convex tooth portion and the second convex tooth portion are driven to gradually align and mesh with each other, or gradually stagger along the axial direction of the driving shaft.

[0018] In the above-mentioned projection lamp assembly, a first recess is provided on the outer peripheral wall of the driven shaft, and a first protrusion adapted to the first recess is provided on the outer peripheral wall of the driving shaft;

[0019] When the driven shaft moves axially, the first convex portion and the first concave portion movably abut against each other;

[0020] Alternatively, a second recess is provided on the outer peripheral wall of the driving shaft, and a second protrusion adapted to the second recess is provided on the outer peripheral wall of the driven shaft;

[0021] When the driven shaft moves axially, the second convex portion and the second concave portion movably abut against each other.

[0022] In the above-mentioned projection lamp assembly, the intermittent movement mechanism is a track groove column mechanism, the transmission assembly further includes a transmission pin, the second driving portion includes a first track groove, a second track groove and a third track groove arranged on the outer circumference of the driving shaft, the first end of the transmission pin is slidably arranged in any track groove, and the second end of the transmission pin is connected to the driven shaft; wherein,

[0023] When the driven shaft rotates axially, the first end of the transmission pin slides relatively in the first track groove or the third track groove;

[0024] When the driven shaft moves in the axial direction, the first end of the transmission pin slides relatively in the second track groove.

[0025] In the above-mentioned projection lamp assembly, the intermittent movement mechanism is a cam plate mechanism; the second driving portion is a fourth protrusion that movably abuts against the second driven portion; and the bracket is provided with a spring along the axial direction of the driven portion;

[0026] When the fourth protrusion is pressed against the second driven portion, the film assembly is in the use position and compresses the spring;

[0027] When the fourth protrusion is separated from the second driven portion, the spring stretches and pushes the film assembly to move from the use position to the image switching position.

[0028] In the above-mentioned projection lamp assembly, the bracket includes a supporting part and a connecting part, each film sheet corresponds to one supporting part, and multiple supporting parts are arranged at intervals on the periphery of the connecting part. A card slot is provided on the connecting part, and a buckle is provided on the driven shaft. The buckle is engaged in the card slot and is used to switch the film sheet corresponding to the projection assembly when the driven shaft rotates.

[0029] In the above-mentioned projection lamp assembly, the projection assembly further includes a light shield, which is movably mounted on the outer side of the illumination lens assembly and covers the gap between the film assembly and the illumination lens assembly, and the light shield is rotatably connected to the driven shaft and fixed along the axial direction of the driven shaft;

[0030] When the driven shaft rotates, the light shield remains stationary relative to the illumination lens assembly;

[0031] When the driven shaft moves in the axial direction, the light shield moves synchronously with the driven shaft;

[0032] A guide groove is provided on the outer side of the light source, and a third convex portion is provided on the light shield. The third convex portion is movably inserted in the guide groove to provide guidance for the movement of the light shield.

[0033] The above-mentioned projection lamp assembly further includes:

[0034] A housing, wherein the transmission assembly and the projection assembly are both arranged in the housing;

[0035] a connecting block movably disposed in the housing, wherein the moving direction of the connecting block is parallel to the axial direction of the driven shaft, and the transmission pin is connected to the connecting block;

[0036] a circuit board disposed in the housing, the light source being electrically connected to the circuit board for providing power to the light source;

[0037] a heat sink, which is disposed on the housing and abuts against the circuit board;

[0038] The motor is arranged on the housing, and the driving shaft is connected to the output end of the motor.

[0039] The present invention solves the above technical problem and further provides a vehicle including the above-mentioned projection lamp assembly.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] (1) By integrating the transmission component and the projection component, multiple films can be automatically switched and focused with the imaging lens group. Compared with the traditional projection lamp equipped with only one fixed film, this solution not only enriches the number of projectable images, but also the switching process of the projected image is accompanied by the change effect of zoom and focus, making the switching of the projected image not abrupt, which can improve the user experience.

[0042] (2) Precise intermittent transmission is achieved by using a driven slot and a drive rod structure, ensuring stability and accuracy during film switching and reducing the possibility of misoperation.

[0043] (3) The convex tooth design can achieve precise engagement and disengagement when the driving shaft drives the driven shaft to move axially, ensuring the accuracy and reliability of film switching.

[0044] (4) Through the design of the track groove and transmission pin, the driven shaft can be flexibly converted between the two motion states of axial movement and rotation, which improves the versatility and adaptability of the entire transmission system. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 It is a three-dimensional diagram of a projection lamp assembly of the present invention.

[0046] Figure 2 This is a three-dimensional diagram when the intermittent rotation mechanism is a grooved wheel mechanism and the intermittent movement mechanism is a track groove column mechanism.

[0047] Figure 3 yes Figure 2 A stereoscopic diagram in which the circuit board and imaging lens group are omitted.

[0048] Figure 4 yes Figure 2 A three-dimensional view of the middle drive shaft.

[0049] Figure 5 yes Figure 2 A three-dimensional view of the driven shaft.

[0050] Figure 6 yes Figure 2 A three-dimensional diagram with the drive shaft and circuit board omitted.

[0051] Figure 7 This is an exploded view of the projection component.

[0052] Figure 8 It is a three-dimensional diagram of the film assembly.

[0053] Figure 9 This is a perspective view when the intermittent rotation mechanism is a grooved wheel mechanism and the intermittent movement mechanism is a cam plate mechanism.

[0054] Figure 10 yes Figure 9 A three-dimensional view of the middle drive shaft.

[0055] Figure 11 This is a three-dimensional diagram when the intermittent rotation mechanism is an incomplete gear mechanism and the intermittent movement mechanism is a track groove column mechanism.

[0056] Figure 12 yes Figure 11 A three-dimensional view of the middle drive shaft.

[0057] Figure 13 yes Figure 11 A three-dimensional view of the driven shaft.

[0058] In the figure, 100, transmission assembly; 110, driving shaft; 111, driving rod; 112, second convex tooth portion; 113, first convex portion; 114, first track groove; 115, second track groove; 116, third track groove; 117, fourth convex portion; 120, driven shaft; 121, driven groove; 122, first convex tooth portion; 123, first concave portion; 124, buckle; 130, transmission pin; 131, first end; 132, second end; 20 0. Projection assembly; 210. Light source; 211. Guide groove; 220. Illumination lens group; 230. Film assembly; 231. Film; 232. Bracket; 232a. Support portion; 232b. Connecting portion; 232c. Card slot; 233. Spring; 240. Imaging lens group; 250. Light shield; 251. Third protrusion; 300. Housing; 400. Connecting block; 500. Circuit board; 600. Heat sink; 700. Motor. DETAILED DESCRIPTION

[0059] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0060] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship and movement status of various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0061] like Figures 1 to 13 As shown, in this solution, two embodiments are mainly used to describe in detail the structure of the projection lamp and its application in vehicles. The above-mentioned vehicles can be cars, trucks, buses, etc.

[0062] A projection lamp assembly includes a transmission assembly 100 and a projection assembly 200.

[0063] Specifically, projection assembly 200 includes a light source 210, an illumination lens assembly 220, a film assembly 230, and an imaging lens assembly 240 along the optical axis. Film assembly 230 includes a bracket 232 and multiple films 231. Films 231 are spaced apart around bracket 232, with their end faces coplanar. This allows the film 231 that is focused with imaging lens assembly 240 to be switched when bracket 232 rotates. Projection assembly 200 emits light from light source 210, and when film 231 is in focus with imaging lens assembly 240, the image on film 231 is projected onto the ground or other platform.

[0064] The transmission assembly 100 is used to individually switch multiple film sheets 231 to focus with the imaging lens group 240. The film assembly 230 has a use position and an image switching position. The transmission assembly 100 includes a driving shaft 110 and a driven shaft 120 fixedly connected to the bracket 232. The driven shaft 120 is fixedly connected to the film assembly 230 through the bracket 232. When the driven shaft 120 rotates, it drives different film sheets 231 to focus with the imaging lens group 240, thereby realizing the switching function of the projected image.

[0065] To enable the driven shaft 120 to switch the film 231 focused on the imaging lens assembly 240, in this embodiment, the driving shaft 110 includes a first driving portion and a second driving portion distributed along the axial direction, while the driven shaft 120 also includes a first driven portion and a second driven portion distributed along the axial direction. The second driving portion and the second driven portion work together to form an intermittent movement mechanism, which drives the driven shaft 120 to move axially. The first driving portion and the first driven portion work together to form an intermittent rotation mechanism, which drives the driven shaft 120 to rotate and thereby switch the film 231.

[0066] The unidirectional continuous rotation of the driving shaft 110 can drive the driven shaft 120 to perform a complete movement stroke, and the movement stroke of the driven shaft 120 includes a continuous zoom stroke, an image switching stroke and a focusing stroke; wherein, when in the zoom stroke, the driving shaft 110 rotates and drives the driven shaft 120 and the film assembly 230 to move axially through the second driving part and the second driven part, so that the film assembly 230 moves from the use position to the image switching position; when in the image switching stroke, the driving shaft 110 rotates and drives the driven shaft 120 and the film assembly 230 to rotate through the first driving part and the first driven part, thereby switching the film 231 so that the projection assembly 200 changes the projection pattern; when in the focusing stroke, the driving shaft 110 rotates and drives the driven shaft 120 and the film assembly 230 to move axially through the second driving part and the second driven part, so that the film assembly 230 moves from the image switching position to the use position.

[0067] In the initial state, one film sheet 231 is focused on the imaging lens assembly 240, and the light source 210 and the illumination lens assembly 220 project an image of the film sheet 231 onto the ground or other surface. The first driving unit and the first driven unit are in a non-transmission connection. When the projected image needs to be switched, the drive shaft 110 begins to rotate.

[0068] First, the driven shaft 120 is in the zoom stroke. At this time, the driving shaft 110 rotates and drives the driven shaft 120 to move axially (along the axis of the zoom stroke) through the transmission between the second driving part and the second driven part. Figure 2The film assembly 230 moves from the in-use position to the image switching position (from bottom to top). During this process, the film assembly 230 moves a certain distance along the axial direction of the driven shaft 120. Since the first driving unit and the first driven unit are in a non-transmission connection at this time, the rotation of the drive shaft 110 does not cause the driven shaft 120 to rotate. As the film 231 moves, the distance between the film 231 and the imaging lens assembly 240 changes, and the focal length between them also changes, causing the projected image to gradually change from clear to blurred.

[0069] Subsequently, the driven shaft 120 enters the reversing stroke. As the driven shaft 120 axially moves and the drive shaft 110 continues to rotate, the first driven portion and the first driving portion gradually transition into a transmission connection. At this point, driven shaft 120 begins to rotate, thereby aligning the next film 231 with the imaging lens assembly 240 and completing the switching of the projected image. During this process, the drive shaft 110 remains in a rotating state.

[0070] After the film 231 is switched, the driven shaft 120 switches to the zoom stroke. At this time, the first driving part and the first driven part are again converted into a non-transmission connection state. In this state, under the action of the second driving part and the second driven part, the driven shaft 120 starts to move in the reverse direction (along the Figure 2 From top to bottom), until the switched film 231 moves to the use position and completes the focus with the imaging lens group 240, so that the projected image becomes clear.

[0071] In this solution, by integrating the transmission assembly 100 and the projection assembly 200, multiple films 231 can be automatically switched and aligned with the imaging lens assembly 240. Compared to traditional projection lamps equipped with only a single fixed film 231, this solution not only increases the number of projectable images, but also accompanies the switching of projected images with zoom and focus effects, making the switching of projected images less abrupt and improving the user experience.

[0072] In one embodiment, the intermittent rotation mechanism is a groove wheel mechanism. In this case, the first driven part is a driven groove 121 set on the driven shaft 120, and the first driving part is a driving rod 111 set on the driving shaft 110. The axial direction of the driving rod 111 is set parallel to the axis of the driving shaft 110 and is movably inserted in the driven groove 121.

[0073] Initially, drive rod 111 is positioned outside driven slot 121, creating a non-transmission connection between the first drive unit and the first driven unit. Therefore, when drive shaft 110 begins to rotate, drive shaft 110 rotates solely under the influence of the second drive unit and the second driven unit, while driven shaft 120 moves axially without rotating. As driven shaft 120 moves and continues to rotate, drive rod 111 gradually enters driven slot 121. At this point, a transmission connection is established between the first drive unit and the first driven unit, and drive shaft 110 begins to drive driven shaft 120 in rotation, thereby switching film 231.

[0074] In this solution, precise intermittent transmission is achieved by using the driven slot 121 and the driving rod 111 structure, thereby ensuring stability and accuracy during the switching process of the film 231 and reducing the possibility of misoperation.

[0075] It should be noted that, although the number of the driven slots 121 and the number of the films 231 are both shown as four in the drawings, in fact the number of these components is not limited to four, and may also be three, five or any other number.

[0076] In the second embodiment of the first driving part and the first driven part, the intermittent rotation mechanism is an incomplete gear mechanism.

[0077] At this time, the first driven part is the first convex tooth part 122 arranged on the outer periphery of the driven shaft 120, and the first driving part is the second convex tooth part 112 arranged on the outer periphery of the driving shaft 110; when the driving shaft 110 drives the driven shaft 120 to move axially, it drives the first convex tooth part 122 and the second convex tooth part 112 to gradually align and engage along the axial direction of the driving shaft 110, or gradually stagger.

[0078] Similarly, refer to Figures 11 to 13 In the initial state, the first convex tooth portion 122 and the second convex tooth portion 112 are not engaged. When the driving shaft 110 rotates, the transmission between the second driving portion and the second driven portion drives the driven shaft 120 along Figure 11 The film assembly 230 moves from the use position to the image switching position. When the film assembly 230 moves to the image switching position, the first protruding tooth portion 122 and the second protruding tooth portion 112 begin to mesh. As the driving shaft 110 continues to rotate, it will drive the driven shaft 120 to rotate.

[0079] Furthermore, a first recess 123 is provided on the outer circumferential wall of the driven shaft 120, and a first protrusion 113 is provided on the outer circumferential wall of the driving shaft 110 to match the first recess 123; when the driven shaft 120 moves axially, the first protrusion 113 and the first recess 123 move in contact with each other. Alternatively, a second recess is provided on the outer circumferential wall of the driving shaft 110, and a second protrusion is provided on the outer circumferential wall of the driven shaft 120 to match the second recess; when the driven shaft 120 moves axially, the second protrusion and the second recess move in contact with each other.

[0080] After the driven shaft 120 completes its movement, the drive rod 111 must be precisely aligned with the opening of the driven slot 121, or the first and second convex teeth 122 and 112 must be precisely meshed. Only in this way can the drive rod 111 smoothly enter the driven slot 121, or the first and second convex teeth 122 and 112 precisely mesh, as the drive shaft 110 continues to rotate. The interaction between the convex and concave portions ensures that the driven shaft 120 will not deflect due to external factors during axial movement, thereby ensuring the normal operation of the entire projector lamp. The specific configuration of the convex and concave portions can be either of the two aforementioned configurations.

[0081] Reference Figures 2 to 5 The intermittent movement mechanism of this scheme is a track groove column mechanism. At this time, the transmission assembly 100 of this scheme also includes a transmission pin 130, and the second driving part includes a first track groove 114, a second track groove 115 and a third track groove 116 arranged on the outer periphery of the driving shaft 110. The first end 131 of the transmission pin 130 is slidably set in any track groove, and the second end 132 of the transmission pin 130 is connected to the driven shaft 120; wherein, when the driven shaft 120 rotates axially, the first end 131 of the transmission pin 130 slides relatively in the first track groove 114 or the third track groove 116; when the driven shaft 120 moves axially, the first end 131 of the transmission pin 130 slides relatively in the second track groove 115.

[0082] Reference Figures 2 to 4 At this time, the first end 131 of the transmission pin 130 is located in the third track groove 116, and the driving rod 111 of the driving shaft 110 does not enter the driven groove 121, so that the first driving part and the first driven part do not form a transmission connection.

[0083] When the drive shaft 110 moves along Figure 3 When the drive pin 130 rotates counterclockwise or clockwise, the first end 131 of the drive pin 130 enters the second track groove 115 and starts to drive the drive pin 130 along the Figure 3 The direction shown is from bottom to top, and when the driving pin 130 moves, the driven shaft 120 moves axially. When the first end 131 of the driving pin 130 enters the first track groove 114 from the second track groove 115 and slides therein, the driven shaft 120 no longer moves axially.

[0084] When the drive rod 111 enters the driven groove 121 and the drive shaft 110 continues to rotate, it begins to drive the driven shaft 120 to rotate. As the driven shaft 120 rotates, the drive rod 111 also begins to slide out of the driven groove 121. During this process, the first end 131 of the transmission pin 130 always slides in the first track groove 114. After the drive rod 111 completely slides out of the driven groove 121, the first end 131 of the transmission pin 130 begins to re-enter the second track groove 115, causing the driven shaft 120 to move in the opposite direction until the first end 131 of the transmission pin 130 returns to the third track groove 116. The design of the track groove and the transmission pin 130 enables the flexible conversion of the driven shaft 120 between the two motion states of axial movement and rotation, thereby improving the versatility and adaptability of the entire transmission system.

[0085] Preferably, refer to Figure 3 The connection between the second end 132 of the transmission pin 130 and the driven shaft 120 can be achieved by setting an annular groove on the outer periphery of the driven shaft 120 and inserting the second end 132 of the transmission pin 130 into the annular groove. This not only effectively plays the role of axial fixing, but also ensures that when the driven shaft 120 rotates, there is no need to drive the transmission pin 130 to rotate together.

[0086] It is further preferred that, due to the friction between the transmission pin 130 and the track groove, the transmission pin 130 is made of metal material to enhance wear resistance.

[0087] Reference Figure 9 and Figure 10 In another embodiment, the intermittent movement mechanism is a cam mechanism; the second driving part is a fourth protrusion 117 that is movably abutted against the second driven part, and the bracket 232 is provided with a spring 233 along the axial direction of the driven part; when the fourth protrusion 117 is pressed against the second driven part, the film assembly 230 is in the use position and compresses the spring 233; when the fourth protrusion 117 is separated from the second driven part, the spring 233 stretches and pushes the film assembly 230 to move from the use position to the image switching position.

[0088] Reference Figure 9 At this time, the film assembly 230 is in the use position, the fourth protrusion 117 is tightly against the second driven part, and the spring 233 is compressed through the film assembly 230. The first driving part and the first driven part are not in the transmission state. At this time, when the driving shaft 110 rotates, it will drive the fourth protrusion 117 to separate from the second driven part. After the fourth protrusion 117 is no longer pressing, the spring 233 stretches and pushes the driven shaft 120 along Figure 9The film assembly 230 moves from the in-use position to the image switching position. After the film assembly 230 moves to the image switching position, the first driving unit and the first driven unit begin to drive the film assembly 230. During this process, the drive shaft 110 continues to rotate. After the film assembly 230 switches to the image switching position, the drive shaft 110 begins to drive the driven shaft 120 to rotate due to the transmission between the first driving unit and the first driven unit.

[0089] It is worth noting that the intermittent rotation mechanism formed by the linkage of the first driving unit and the first driven unit in this embodiment includes two types of mechanisms: a sheave mechanism and a partial gear mechanism, while the intermittent movement mechanism formed by the linkage of the second driving unit and the second driven unit includes two types of mechanisms: a track groove mechanism and a cam plate mechanism. Therefore, the transmission assembly 100 of this embodiment has at least four different transmission modes.

[0090] In this solution, the bracket 232 includes a supporting portion 232a and a connecting portion 232b. Each film 231 corresponds to a supporting portion 232a. Multiple supporting portions 232a are arranged at intervals on the outer periphery of the connecting portion 232b. A card slot 232c is provided on the connecting portion 232b. A buckle 124 is provided on the driven shaft 120. The buckle 124 is engaged in the card slot 232c and is used to switch the film 231 corresponding to the projection assembly 200 when the driven shaft 120 rotates.

[0091] The design of the support portion 232a and the connecting portion 232b allows multiple films 231 to be arranged together compactly and orderly, which is convenient for management and quick switching, while also simplifying the overall structural design of the device. The slot 232c and the buckle 124 are provided for a fixed connection between the bracket 232 and the driven shaft 120.

[0092] It is worth mentioning that the projection assembly 200 also includes a light shield 250, which is movably mounted on the outside of the illumination lens group 220 and covers the gap between the film assembly 230 and the illumination lens group 220. The light shield 250 is rotatably connected to the driven shaft 120 and is fixed along the axial direction of the driven shaft 120; when the driven shaft 120 rotates, the light shield 250 remains stationary relative to the illumination lens group 220; when the driven shaft 120 moves axially, the light shield 250 moves synchronously with the driven shaft 120.

[0093] Since the film assembly 230 can move axially, there must be space between the film assembly 230 and the illumination lens group 220 for the film assembly 230 to move. If there is no light shield 250, stray light in the projection system may be emitted from the gap between the two and re-enter the projection system through some means, thereby interfering with the final projection pattern. Therefore, the function of the light shield 250 is to absorb stray light emitted from the gap, thereby ensuring the purity of the projected image. Similarly, the connection between the light shield 250 and the driven shaft 120 can be achieved by providing an annular groove on the driven shaft 120 and providing a connecting portion 232b on the light shield 250 that is inserted into the annular groove. In order to enhance the light shielding effect, the light shield 250 can be designed in black. Of course, other colors are also within the scope of protection of this solution.

[0094] Preferably, a guide groove 211 is provided on the outer side of the light source 210 , and a third protrusion 251 is provided on the light shield 250 . The third protrusion 251 is movably inserted into the guide groove 211 to provide guidance for the movement of the light shield 250 .

[0095] It is worth mentioning that the present solution also includes: a shell 300, in which the transmission assembly 100 and the projection assembly 200 are both arranged in the shell 300; a connecting block 400, which is movably arranged in the shell 300, and the moving direction of the connecting block 400 is parallel to the axial direction of the driven shaft 120, and the transmission pin 130 is connected to the connecting block 400; a circuit board 500, which is arranged in the shell 300, and the projection assembly 200 is electrically connected to the circuit board 500 to provide power to the projection assembly 200; a heat sink 600, which is arranged on the shell 300 and abuts against the circuit board 500; a motor 700, which is arranged on the shell 300, and the drive shaft 110 is connected to the output end of the motor 700.

[0096] The housing 300 serves as the main structure of this projector lamp, protecting the transmission assembly 100 and projection assembly 200 therein from water and other objects, ensuring proper operation of the entire projector lamp. One end of the spring 233 abuts against the inner wall of the housing 300, compressing the spring 233 when the fourth protrusion 117 abuts the second driven portion. The movable connection between the connecting block 400 and the inner wall of the housing 300 is achieved by providing corresponding guide grooves 211 on the inner wall of the housing 300, with the ends of the connecting block 400 movably mounted within these grooves. The connecting block 400 primarily supports the transmission pin 130 and can be integrally formed with the transmission pin 130 or secured by threaded connections or welding. The heat sink 600 dissipates heat from the circuit board 500, ensuring proper operation of the projector lamp. The motor 700 provides power for the rotation of the drive shaft 110.

[0097] It should be noted that, in the present invention, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integral whole; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0098] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0099] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A projection lamp assembly, characterized in that: include: A projection assembly, which includes a light source, an illumination lens group, a film assembly, and an imaging lens group along the optical axis. The film assembly includes a bracket and a plurality of films, the plurality of films being arranged at intervals around the bracket, and the end faces of the plurality of films being in the same plane. The film assembly has a use position and an image switching position. a transmission assembly comprising a drive shaft and a driven shaft fixedly connected to the bracket; The drive shaft includes a first drive portion and a second drive portion distributed along the axial direction; The driven shaft includes a first driven portion and a second driven portion distributed along the axial direction; The second driving part and the second driven part are linked to form an intermittent moving mechanism, and the first driving part and the first driven part are linked to form an intermittent rotating mechanism; A housing, wherein the transmission assembly and the projection assembly are both arranged in the housing; a motor, which is arranged on the housing, and the drive shaft is connected to an output end of the motor; When the projection image needs to be switched, the motor drives the driving shaft to rotate, and the driving shaft drives the driven shaft to move while rotating. The movement stroke of the driven shaft includes a continuous zoom stroke, an image switching stroke and a focusing stroke; wherein, When in the zoom stroke, the driving shaft rotates and drives the driven shaft and the film assembly to move axially through the second driving part and the second driven part, so that the film assembly moves from the use position to the image switching position; When in the image switching stroke, the driving shaft rotates and drives the driven shaft and the film assembly to rotate through the first driving part and the first driven part, thereby switching the film to enable the projection assembly to change the projection pattern; When in the focusing stroke, the driving shaft rotates and drives the driven shaft and the film assembly to move axially through the second driving part and the second driven part, so that the film assembly moves from the image switching position to the use position.

2. A projection lamp assembly according to claim 1, characterized in that: The intermittent rotation mechanism is a groove wheel mechanism, the first driven part is a driven groove arranged on the driven shaft, the first driving part is a driving rod arranged on the driving shaft, the axial direction of the driving rod is arranged parallel to the axis of the driving shaft, and is movably inserted in the driven groove.

3. The projection lamp assembly according to claim 1, wherein: The intermittent rotation mechanism is an incomplete gear mechanism, the first driven portion is a first convex tooth portion provided on the outer periphery of the driven shaft, and the first driving portion is a second convex tooth portion provided on the outer periphery of the driving shaft; When the driving shaft drives the driven shaft to move axially, the first convex tooth portion and the second convex tooth portion are driven to gradually align and mesh with each other, or gradually stagger along the axial direction of the driving shaft.

4. A projection lamp assembly according to claim 2 or 3, characterized in that: A first concave portion is provided on the outer peripheral wall of the driven shaft, and a first convex portion adapted to the first concave portion is provided on the outer peripheral wall of the driving shaft; When the driven shaft moves axially, the first convex portion and the first concave portion movably abut against each other; Alternatively, a second recess is provided on the outer peripheral wall of the driving shaft, and a second protrusion adapted to the second recess is provided on the outer peripheral wall of the driven shaft; When the driven shaft moves axially, the second convex portion and the second concave portion movably abut against each other.

5. The projection lamp assembly according to claim 1, wherein: The intermittent movement mechanism is a track groove column mechanism, the transmission assembly further includes a transmission pin, the second driving portion includes a first track groove, a second track groove and a third track groove arranged on the outer periphery of the driving shaft, the first end of the transmission pin is slidably arranged in any track groove, and the second end of the transmission pin is connected to the driven shaft; wherein, When the driven shaft rotates axially, the first end of the transmission pin slides relatively in the first track groove or the third track groove; When the driven shaft moves in the axial direction, the first end of the transmission pin slides relatively in the second track groove.

6. The projection lamp assembly according to claim 1, wherein: The intermittent movement mechanism is a cam plate mechanism; the second driving part is a fourth convex part that movably abuts against the second driven part, and the bracket is provided with a spring along the axial direction of the driven part; When the fourth protrusion is pressed against the second driven portion, the film assembly is in the use position and compresses the spring; When the fourth protrusion is separated from the second driven portion, the spring stretches and pushes the film assembly to move from the use position to the image switching position.

7. The projection lamp assembly according to claim 1, wherein: The bracket includes a supporting part and a connecting part, each film corresponds to a supporting part, and multiple supporting parts are arranged at intervals on the periphery of the connecting part. A slot is provided on the connecting part, and a buckle is provided on the driven shaft. The buckle is engaged in the slot and is used to switch the film corresponding to the projection assembly when the driven shaft rotates.

8. The projection lamp assembly according to claim 1, wherein: The projection assembly further includes a light shield, which is movably sleeved on the outside of the illumination lens assembly and covers the gap between the film assembly and the illumination lens assembly, and the light shield is rotatably connected to the driven shaft and fixed along the axial direction of the driven shaft; When the driven shaft rotates, the light shield remains stationary relative to the illumination lens assembly; When the driven shaft moves in the axial direction, the light shield moves synchronously with the driven shaft; A guide groove is provided on the outer side of the light source, and a third convex portion is provided on the light shield. The third convex portion is movably inserted in the guide groove to provide guidance for the movement of the light shield.

9. The projection lamp assembly according to claim 5, wherein: Also includes: a connecting block movably disposed in the housing, wherein the moving direction of the connecting block is parallel to the axial direction of the driven shaft, and the transmission pin is connected to the connecting block; a circuit board disposed in the housing, the light source being electrically connected to the circuit board for providing power to the light source; A heat sink is provided on the housing and abuts against the circuit board.

10. A vehicle, characterized in that: The invention comprises a projection lamp assembly according to any one of claims 1 to 9.

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