Projection lamp assembly and vehicle

Abstract

The invention belongs to the technical field of vehicle accessories, and provides a projection lamp assembly and a vehicle, the projection lamp assembly comprises a transmission assembly and a projection assembly, and the projection assembly comprises a plurality of films; the transmission assembly comprises a driving shaft and a driven shaft; the driving shaft comprises a first driving part and a second driving part which are distributed in the axial direction. The driven shaft comprises a first driven part and a second driven part which are distributed in 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. Compared with the prior art, by integrating the transmission assembly and the projection assembly, the multiple films can be automatically switched, the number of projectable images is increased, the switching process of the projected images is also accompanied by the change effect of zooming and focusing, the switching of the projected images is not abrupt, and the user experience is improved.

Description

Technical Field

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

[0002] In the existing projection technology field, as one of the core components, projection lamps are widely used in various scenarios, including but not limited to home entertainment, commercial displays, educational occasions, and vehicle interiors. The traditional projection lamp design usually focuses on the projection of a single image, that is, only one preset image or pattern can be displayed each time. This traditional projection lamp design concept is based on its main function - clearly and stably projecting specific content onto the screen, so it is often only equipped with a fixed film or a set of limited replaceable transparent films / templates. If the user needs to replace the projected content, they need to manually replace these films, 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 being able to quickly switch different image contents is increasing. For example, when the vehicle door is opened, it is hoped that multiple different projection images can be automatically cycled to attract consumers' attention. However, most of the current projection devices on the market are still limited to projecting a single image at a time and cannot meet the above requirements for flexibility and efficiency.

[0004] In addition, even if the existing projection devices have a certain degree of multi-image switching ability, they generally have problems such as complex structure and inconvenient operation. For example, some devices use mechanical hands or other automation devices to replace the films, which not only increases the cost and volume of the device, but also reduces the reliability and stability of the system. 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 situation of the prior art.

[0006] The technical solution adopted by the present invention to solve the above technical problem is: to propose a projection lamp assembly, including: a projection component, which includes a light source, an illumination lens group, a film component, and an imaging lens group along the optical axis direction. The film component includes a bracket and a plurality of films. The plurality of films are spaced apart in the circumferential direction of the bracket, and the end faces of the plurality of films are in the same plane. The film component has a use position and an image-changing position; a transmission component, which includes a drive shaft and a driven shaft fixedly connected to the bracket; The drive shaft includes a first drive part and a second drive part distributed along the axial direction; The driven shaft includes a first driven part and a second driven part 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; 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.

[0007] 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.

[0008] 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; 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.

[0009] 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; 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.

[0010] 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 part includes a first track groove, a second track groove, and a third track groove provided on the outer periphery of the driving shaft. The first end of the transmission pin is slidably arranged in any one of the track grooves, and the second end of the transmission pin is connected to the driven shaft. Among them, 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 axially, the first end of the transmission pin slides relatively in the second track groove.

[0011] In the above-mentioned projection lamp assembly, the intermittent movement mechanism is a cam disc mechanism; the second driving part is a fourth convex part that abuts against the second driven part movably, and a spring is arranged on the bracket along the axial direction of the driven part; When the fourth convex part abuts tightly against the second driven part, the film component is in the use position and compresses the spring; When the fourth convex part separates from the second driven part, the spring extends and pushes the film component to move from the use position to the image switching position.

[0012] In the above-mentioned projection lamp assembly, the bracket includes a support part and a connecting part. Each film corresponds to one support part. A plurality of support parts are arranged at intervals on the outer periphery of the connecting part. A clamping groove is arranged on the connecting part, and a clamping buckle is arranged on the driven shaft. The clamping buckle is clamped in the clamping groove for switching the film corresponding to the projection component when the driven shaft rotates.

[0013] In the above-mentioned projection lamp assembly, the projection component further includes a light shield. The light shield is movably sleeved outside the illumination lens group and covers the gap between the film component and the illumination lens group. 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 group; When the driven shaft moves axially, the light shield moves synchronously with the driven shaft; A guiding groove is arranged outside the light source, and a third convex part is arranged on the light shield. The third convex part is movably inserted into the guiding groove for guiding the movement of the light shield.

[0014] In the above-mentioned projection lamp assembly, it further includes: A housing, and the transmission assembly and the projection component are both arranged in the housing; A connecting block, which is movably arranged in the housing, the moving direction of the connecting block being parallel to the axial direction of the driven shaft, and the transmission pin being connected to the connecting block; A circuit board, which is arranged in the housing, the light source being electrically connected to the circuit board to supply power to the light source; A heat dissipation member, which is arranged on the housing and abuts against the circuit board; A motor, which is arranged on the housing, the driving shaft being connected to the output end of the motor.

[0015] The present invention also provides a vehicle for solving the above technical problems, comprising the above-mentioned projection lamp assembly.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] (1) By integrating the transmission assembly and the projection assembly, multiple film sheets can be automatically switched and focused with the imaging lens group. Compared with the traditional projection lamp equipped with only one fixed film sheet, this solution not only enriches the number of projectable images, but also the switching process of the projected images is accompanied by the effects of zooming and focusing, making the switching of the projected images not abrupt and improving the user experience.

[0018] (2) By using the driven groove and the driving rod structure, precise intermittent transmission is achieved, ensuring the stability and accuracy during the switching process of the film sheets and reducing the possibility of misoperation.

[0019] (3) By adopting the design of the convex tooth part, precise meshing and separation can be achieved when the driving shaft drives the driven shaft to axially move, ensuring the accuracy and reliability of the film sheet switching.

[0020] (4) Through the design of the track groove and the transmission pin, the flexible conversion between the two motion states of axial movement and rotation of the driven shaft is realized, improving the versatility and adaptability of the entire transmission system. Description of the Drawings

[0021] Figure 1 is a perspective view of a projection lamp assembly of the present invention.

[0022] Figure 2 is a perspective view when the intermittent rotation mechanism is a Geneva mechanism and the intermittent movement mechanism is a track groove column mechanism.

[0023] Figure 3 is Figure 2 a perspective view after omitting the circuit board and the imaging lens group in

[0024] Figure 4 is Figure 2 a perspective view of the driving shaft in

[0025] Figure 5 is Figure 2 The three-dimensional view of the driven shaft in

[0026] Figure 6 is Figure 2 The three-dimensional view after omitting the drive shaft and the circuit board in

[0027] Figure 7 is the exploded view of the projection assembly.

[0028] Figure 8 is the three-dimensional view of the film component.

[0029] Figure 9 is the three-dimensional view when the intermittent rotation mechanism is a Geneva mechanism and the intermittent movement mechanism is a cam disc mechanism.

[0030] Figure 10 is Figure 9 The three-dimensional view of the drive shaft in

[0031] Figure 11 is the three-dimensional view when the intermittent rotation mechanism is an incomplete gear mechanism and the intermittent movement mechanism is a track groove column mechanism.

[0032] Figure 12 is Figure 11 The three-dimensional view of the drive shaft in

[0033] Figure 13 is Figure 11 The three-dimensional view of the driven shaft in

[0034] In the figure, 100, transmission assembly; 110, drive shaft; 111, drive rod; 112, second convex tooth part; 113, first convex part; 114, first track groove; 115, second track groove; 116, third track groove; 117, fourth convex part; 120, driven shaft; 121, driven groove; 122, first convex tooth part; 123, first concave part; 124, buckle; 130, transmission pin; 131, first end; 132, second end; 200, projection assembly; 210, light source; 211, guide groove; 220, illumination lens group; 230, film component; 231, film; 232, bracket; 232a, support part; 232b, connecting part; 232c, card slot; 233, spring; 240, imaging lens group; 250, light shield; 251, third convex part; 300, housing; 400, connecting block; 500, circuit board; 600, heat sink; 700, motor. Detailed implementation manners

[0035] The following are specific embodiments of the present invention and in combination with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0037] As Figures 1 to 13 shown, in this solution, mainly through two embodiments, the structure of the projection lamp and its application in vehicles will be described in detail. The above-mentioned vehicles can be cars, trucks, buses, etc.

[0038] A projection lamp assembly includes: a transmission component 100 and a projection component 200.

[0039] Specifically, along the optical axis direction, the projection component 200 includes a light source 210, an illumination lens group 220, a film component 230, and an imaging lens group 240. The film component 230 includes a bracket 232 and a plurality of films 231. The films 231 are arranged at intervals in the circumferential direction of the bracket 232, and the end faces of the plurality of films 231 are in the same plane, so as to be able to switch the film 231 that is in focus with the imaging lens group 240 when the bracket 232 rotates. The projection component 200 emits light through the light source 210. When the film 231 is in focus with the imaging lens group 240, the image on the film 231 is projected onto the ground or other platforms.

[0040] The transmission component 100 is used to switch the plurality of films 231 individually to be in focus with the imaging lens group 240. The film component 230 has a use position and an image-changing position. The transmission component 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 component 230 through the bracket 232. When the driven shaft 120 rotates, it drives different films 231 to be in focus with the imaging lens group 240, thereby realizing the function of switching the projection image.

[0041] In order to realize the switching of the film 231 that is in focus with the imaging lens group 240 by the driven shaft 120, in this embodiment, the driving shaft 110 includes a first driving part and a second driving part distributed along the axial direction, and the driven shaft 120 includes a first driven part and a second driven part distributed along the axial direction. Among them, the second driving part and the second driven part are linked to form an intermittent movement mechanism for driving the driven shaft 120 to move axially; while the first driving part and the first driven part are linked to form an intermittent rotation mechanism for driving the driven shaft 120 to rotate and thus switch the film 231.

[0042] The unidirectional continuous rotation of the drive shaft 110 can drive the driven shaft 120 to perform a complete motion stroke. The motion stroke of the driven shaft 120 includes continuous zooming, image switching, and focusing strokes. Among them, when in the zooming stroke, the drive 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 drive 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 to enable the projection assembly 200 to change the projection pattern. When in the focusing stroke, the drive 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.

[0043] In the initial state, one of the films 231 is in focus with the imaging lens group 240, and the light source 210 and the illumination lens group 220 project the image of this film 231 onto the ground or other plane. The first driving part and the first driven part are in a non-transmission connection state. When it is necessary to switch the projection image, the drive shaft 110 starts to rotate.

[0044] First, the driven shaft 120 is in the zooming stroke. At this time, the drive shaft 110 rotates and drives the driven shaft 120 to move axially (in the Figure 2 direction from bottom to top) through the transmission between 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. During this process, the film assembly 230 moves a certain distance along the axial direction of the driven shaft 120. Since the first driving part and the first driven part are in a non-transmission connection state at this time, the rotation of the drive shaft 110 will not cause the driven shaft 120 to rotate. During the movement of the film 231, as the distance between the film 231 and the imaging lens group 240 changes, the focal length between the two also changes, making the projection image gradually change from clear to blurred.

[0045] Subsequently, the driven shaft 120 is in the commutation stroke. During the axial movement of the driven shaft 120 and the continuous rotation of the drive shaft 110, the first driven part and the first driving part gradually change to a transmission connection state. At this time, under their combined action, the driven shaft 120 starts to rotate, thereby realizing the alignment of another film 231 with the imaging lens group 240 and completing the switching of the projection image. During this process, the drive shaft 110 always maintains a rotating state.

[0046] After the switching of the film 231 is completed, 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 Figure 2 the direction from top to bottom), until the switched film 231 moves to the use position and completes focusing with the imaging lens group 240, making the projected image clear.

[0047] 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 group 240. Compared with the traditional projection lamp equipped with only one fixed film 231, this solution not only enriches the number of projectable images, but also the switching process of the projected image is accompanied by the changing effects of zooming and focusing, making the switching of the projected image not abrupt and improving the user experience.

[0048] In one embodiment, the intermittent rotation mechanism is a Geneva wheel mechanism. At this time, the first driven part is a driven slot 121 provided on the driven shaft 120, and the first driving part is a driving rod 111 provided on the driving shaft 110. The axial direction of the driving rod 111 is parallel to the axis of the driving shaft 110 and is movably inserted into the driven slot 121.

[0049] In the initial state, the driving rod 111 is located outside the driven slot 121, so that the first driving part and the first driven part are in a non-transmission connection state. Therefore, when the driving shaft 110 starts to rotate, only under the action of the second driving part and the second driven part, the driving shaft 110 rotates, while the driven shaft 120 only moves axially without rotating. As the driven shaft 120 moves and the driving shaft 110 continues to rotate, the driving rod 111 gradually enters the driven slot 121. At this time, the first driving part and the first driven part establish a transmission connection, and the driving shaft 110 starts to drive the driven shaft 120 to rotate, thus realizing the switching of the film 231.

[0050] In this solution, precise intermittent transmission is achieved by using the structure of the driven slot 121 and the driving rod 111, ensuring the stability and accuracy during the switching process of the film 231 and reducing the possibility of misoperation.

[0051] It should be noted that in the drawings, although the number of both the driven slot 121 and the film 231 is shown as four, in fact, the number of these components is not limited to four, and may also be three, five or any other number.

[0052] In the second embodiment of the first driving part and the first driven part, the intermittent rotation mechanism is an incomplete gear mechanism.

[0053] 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 axially move, 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.

[0054] Similarly, referring to Figures 11 to 13 , in the initial state, the first convex tooth part 122 and the second convex tooth part 112 do not engage. When the driving shaft 110 rotates, due to the transmission between the second driving part and the second driven part, the driven shaft 120 is driven to move in the Figure 11 direction from bottom to top, so that the film component 230 moves from the use displacement to the image switching position. When the film component 230 moves to the image switching position, the first convex tooth part 122 and the second convex tooth part 112 start to engage. As the driving shaft 110 continues to rotate, the driven shaft 120 will be driven to rotate.

[0055] Furthermore, a first concave part 123 is arranged on the outer peripheral wall of the driven shaft 120, and a first convex part 113 adapted to the first concave part 123 is arranged on the outer peripheral wall of the driving shaft 110; when the driven shaft 120 axially moves, the first convex part 113 abuts against the first concave part 123 movably. Or, a second concave part is arranged on the outer peripheral wall of the driving shaft 110, and a second convex part adapted to the second concave part is arranged on the outer peripheral wall of the driven shaft 120; when the driven shaft 120 axially moves, the second convex part abuts against the second concave part movably.

[0056] After the driven shaft 120 finishes moving, it is necessary to accurately align the driving rod 111 with the opening of the driven groove 121, or make the first convex tooth part 122 and the second convex tooth part 112 accurately engage. Only in this way, when the driving shaft 110 continues to rotate, can the driving rod 111 smoothly enter the driven groove 121, or the first convex tooth part 122 and the second convex tooth part 112 accurately engage. The mutual cooperation between the convex part and the concave part ensures that the driven shaft 120 will not deflect due to external factors during the axial movement, thus ensuring the normal working process of the entire projection lamp. As for the specific configuration of the convex part and the concave part, any one of the above two situations can be adopted.

[0057] Referring to Figures 2 to 5, the intermittent movement mechanism of this solution is a track groove column mechanism. At this time, the transmission component 100 of this solution further includes a transmission pin 130. The second driving part includes a first track groove 114, a second track groove 115, and a third track groove 116 provided on the outer periphery of the driving shaft 110. The first end 131 of the transmission pin 130 is slidably arranged in any track groove, and the second end 132 of the transmission pin 130 is connected to the driven shaft 120. Among them, 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.

[0058] Referring to 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 are not in transmission connection.

[0059] When the driving shaft 110 rotates Figure 3 in the counterclockwise or clockwise direction, the first end 131 of the transmission pin 130 enters the second track groove 115 and starts to drive the transmission pin 130 to move upward from bottom to top along the Figure 3 direction shown. When the transmission pin 130 moves, it drives the driven shaft 120 to move axially. When the first end 131 of the transmission 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.

[0060] When the driving rod 111 enters the driven groove 121 and the driving shaft 110 continues to rotate, it starts to drive the driven shaft 120 to rotate. As the driven shaft 120 rotates, the driving rod 111 also starts 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. When the driving rod 111 completely slides out of the driven groove 121, the first end 131 of the transmission pin 130 starts to re-enter the second track groove 115, causing the driven shaft 120 to move in the reverse direction until the first end 131 of the transmission pin 130 returns to the third track groove 116 again. By using the design of the track groove and the transmission pin 130, the flexible conversion of the driven shaft 120 between the two motion states of axial movement and rotation is realized, improving the versatility and adaptability of the entire transmission system.

[0061] Preferably, referring to Figure 3 , the connection between the second end 132 of the transmission pin 130 and the driven shaft 120 can be realized by providing 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 can not only effectively play the role of axial fixation, but also ensure that the transmission pin 130 does not need to be driven to rotate together when the driven shaft 120 rotates.

[0062] Further preferably, due to the friction between the drive pin 130 and the track groove, the drive pin 130 is made of a metal material to enhance wear resistance.

[0063] Refer to Figure 9 And Figure 10 , in another embodiment, the intermittent movement mechanism is a cam disc mechanism; the second driving part is a fourth convex part 117 that abuts against the second driven part movably, and a spring 233 is arranged on the bracket 232 along the axial direction of the driven part; when the fourth convex part 117 abuts tightly against the second driven part, the film sheet assembly 230 is in the use position and compresses the spring 233; when the fourth convex part 117 separates from the second driven part, the spring 233 extends and pushes the film sheet assembly 230 to move from the use position to the image changing position.

[0064] Refer to Figure 9 , at this time, the film sheet assembly 230 is in the use position, the fourth convex part 117 abuts tightly against the second driven part, and compresses the spring 233 through the film sheet assembly 230. And the first driving part and the first driven part are not in the transmission state. At this time, when the drive shaft 110 rotates, it will drive the fourth convex part 117 to separate from the second driven part. After the pressing of the fourth convex part 117 is removed, the spring 233 extends and pushes the driven shaft 120 to move in the Figure 9 direction from bottom to top in to move the film sheet assembly 230 from the use position to the image changing position. And, after the film sheet assembly 230 moves to the image changing position, the first driving part and the first driven part start to enter the transmission state. During this process, the drive shaft 110 always maintains a rotating state. After the film sheet assembly 230 is switched to the image changing position, due to the transmission between the first driving part and the first driven part, the drive shaft 110 starts to drive the driven shaft 120 to rotate.

[0065] It should be noted that in this solution, the intermittent rotation mechanism formed by the linkage of the first driving part and the first driven part includes two forms: a Geneva wheel mechanism and an incomplete gear mechanism, while the intermittent movement mechanism formed by the linkage of the second driving part and the second driven part includes two forms: a track groove column mechanism and a cam disc mechanism. Therefore, the transmission assembly 100 of this solution has at least four different transmission methods.

[0066] In this solution, the bracket 232 includes a support part 232a and a connecting part 232b. Each film sheet 231 corresponds to a support part 232a. A plurality of support parts 232a are arranged at intervals on the outer periphery of the connecting part 232b. A clamping groove 232c is arranged on the connecting part 232b, and a clamping buckle 124 is arranged on the driven shaft 120. The clamping buckle 124 is clamped in the clamping groove 232c for switching the film sheet 231 corresponding to the projection assembly 200 when the driven shaft 120 rotates.

[0067] The support part 232a and the connecting part 232b are designed such that multiple film sheets 231 can be arranged compactly and orderly together, facilitating management and quick switching. At the same time, it also simplifies the overall structural design of the device. The settings of the card slot 232c and the buckle 124 are used for the fixed connection between the bracket 232 and the driven shaft 120.

[0068] It is worth mentioning that the projection assembly 200 further includes a light shield 250. The light shield 250 is movably sleeved outside the illumination lens group 220 and covers the gap between the film sheet assembly 230 and the illumination lens group 220. The light shield 250 is rotationally connected to the driven shaft 120 and 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.

[0069] Since the film sheet assembly 230 can move axially, there must be a space for the film sheet assembly 230 to move between the film sheet assembly 230 and the illumination lens group 220. If there is no light shield 250, stray light in the projection system may emit from the gap between the two and re-enter the projection system through a certain path, thus interfering with the final projection pattern. Therefore, the function of the light shield 250 is to absorb the 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 setting an annular groove on the driven shaft 120 and a connecting part 232b inserted into the annular groove on the light shield 250. To enhance the light shielding effect, the light shield 250 can be designed in black. Of course, other colors are also within the protection scope of this solution.

[0070] Preferably, a guiding groove 211 is provided outside the light source 210, and a third convex part 251 is provided on the light shield 250. The third convex part 251 is movably inserted into the guiding groove 211 for guiding the movement of the light shield 250.

[0071] It is worth mentioning that this solution further includes: a housing 300, the transmission assembly 100 and the projection assembly 200 are both arranged inside the housing 300; a connecting block 400, which is movably arranged inside the housing 300. 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 inside the housing 300. The projection assembly 200 is electrically connected to the circuit board 500 to provide power for the projection assembly 200; a heat dissipation part 600, which is arranged on the housing 300 and abuts against the circuit board 500; a motor 700, which is arranged on the housing 300, and the drive shaft 110 is connected to the output end of the motor 700.

[0072] The housing 300 is configured as the main structure of the projection lamp in this solution, which is used to provide protection for the transmission component 100 and the projection component 200 therein, preventing water or other objects from entering the transmission component 100 and the projection component 200, so as to ensure the normal operation of the entire projection lamp. One end of the spring 233 abuts against the inner wall of the housing 300, and is used to make the spring 233 in a compressed state when the fourth convex portion 117 abuts against the second driven portion. The movable setting between the connecting block 400 and the inner wall of the housing 300 can be realized by providing corresponding guide grooves 211 on the inner wall of the housing 300 and movably installing both ends of the connecting block 400 in the guide grooves 211. It is mainly used to support the transmission pin 130, and the connecting block 400 and the transmission pin 130 can be integrally formed, or can be fixed by means of threaded connection or welding. The heat dissipation component 600 is used to dissipate heat from the circuit board 500 to ensure the normal operation of the projection lamp. The motor 700 is used to provide a power source for the rotation of the drive shaft 110.

[0073] It should be noted that in the present invention, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. Terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0074] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0075] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by 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; 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. The projection lamp assembly according to claim 1, wherein 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. A projection lamp assembly according to claim 1, characterized in that, 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. A projection lamp assembly according to claim 1, characterized in that, 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 within the first track groove or the third track groove; When the driven shaft moves axially, the first end of the transmission pin slides relatively within the second track groove.

6. A projection lamp assembly according to claim 1, characterized in that, The intermittent movement mechanism is a cam disc mechanism; the second driving part is a fourth convex part that abuts against the second driven part movably, and a spring is arranged on the bracket along the axial direction of the driven part; When the fourth convex part abuts tightly against the second driven part, the film sheet assembly is in the use position and compresses the spring; When the fourth convex part separates from the second driven part, the spring extends and pushes the film sheet assembly to move from the use position to the image-changing position.

7. A projection lamp assembly according to claim 1, characterized in that, The bracket includes a support part and a connecting part. Each film sheet corresponds to one support part. A plurality of the support parts are arranged at intervals on the outer periphery of the connecting part. A clamping groove is arranged on the connecting part, and a clamping buckle is arranged on the driven shaft. The clamping buckle is clamped in the clamping groove and is used to switch the film sheet corresponding to the projection assembly when the driven shaft rotates.

8. The projection lamp assembly according to claim 1, characterized in that, The projection assembly further includes a light-shielding cover. The light-shielding cover is movably sleeved outside the illumination lens group and covers the gap between the film sheet assembly and the illumination lens group. The light-shielding cover is rotationally connected to the driven shaft and is fixed along the axial direction of the driven shaft; When the driven shaft rotates, the light-shielding cover remains stationary relative to the illumination lens group; When the driven shaft moves axially, the light-shielding cover moves synchronously with the driven shaft; A guiding groove is arranged outside the light source, and a third convex part is arranged on the light-shielding cover. The third convex part is movably inserted into the guiding groove and is used to provide guidance for the movement of the light-shielding cover.

9. The projection lamp assembly according to claim 5, characterized in that, Further included are: A housing, where the transmission assembly and the projection assembly are both arranged within the housing; A connecting block, which is movably arranged within the housing. 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, which is arranged within the housing. The light source is electrically connected to the circuit board to supply power to the light source; A heat dissipation component, which is arranged on the housing and abuts against the circuit board; A motor, which is arranged on the housing. The driving shaft is connected to the output end of the motor.

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

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