Film dynamic projection device

Abstract

The utility model relates to the technical field of projection equipment, in particular to a film dynamic projection device, which comprises a light-emitting component, a light-emitting component, a light-emitting component, a light-emitting component, a light-emitting component, a light-emitting component, a light-emitting component, a light-emitting component and a light-emitting component, the film assembly comprises a film arranged right in front of the condensing lens group, a rotating gear connected with the film, and a driving group connected with the rotating gear and used for driving the rotating gear to rotate; the imaging lens module is arranged right in front of the film, and the imaging lens module is suitable for being matched with the rotating gear in a threaded and screwed mode. According to the utility model, the structure of the whole film dynamic projection device can be simplified, and the use performance of the film dynamic projection device can be optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of projection equipment, in particular to a film dynamic projection device. Background Art

[0002] Film projection equipment is commonly used for building exterior lighting, indoor spot lighting, landscape lighting, stage atmosphere creation, and automotive lighting. Depending on the needs, there are many different types of projection lamps, capable of simulating various scenes, such as starry sky projection lamps and snowflake projection lamps.

[0003] For example, publication number CN207281458U discloses a dynamic film projector that incorporates two projection assemblies. The turntable intermittently pauses during rotation, using the spiral transmission strip of the transmission wheel and the transmission rod on the projection assembly's rotating shaft. This allows the contents of multiple films to be projected continuously, further allowing the contents of multiple films to be linked together to create an uninterrupted animation effect. While this dynamic projector can achieve dynamic projection effects, it requires the coordinated use of two projection assemblies, resulting in a complex overall structure and relatively high structural costs.

[0004] Based on the above situation, Publication No. CN221222468U discloses a projection device and a projection lamp for producing a meteor light effect. These devices only require a single film assembly, which uses rotating gears to drive the film to rotate synchronously to achieve a dynamic projection effect. Actual research has revealed the following problems:

[0005] First, it uses a second imaging lens, an adjustment lens, and a wide-angle lens arranged in sequence in the direction of film projection. The second imaging lens is used to collect the effective pattern light spot passing through the film, thereby forming a real image pattern and projecting it to the adjustment lens. The adjustment lens then reshapes and corrects the real image pattern and projects it to the wide-angle lens. The wide-angle lens magnifies the adjusted real image pattern and projects it onto the light and shadow bearing surface, thereby presenting a clear and magnified pattern effect on the light and shadow bearing surface. However, with this imaging component, the clarity of the projected scene cannot be adjusted.

[0006] Secondly, the film and the rotating gear are fixed together through the cooperation of multiple components such as the film tray, the fixing seat, and the fixing buckle. This results in a complex structure between the film assembly and the rotating gear, cumbersome assembly, and high production costs.

[0007] In summary, for the existing film dynamic projection device, from the perspective of simplifying the structure and optimizing the performance, its overall structure needs to be further optimized. Utility Model Content

[0008] The purpose of the utility model is to provide a film dynamic projection device to solve the technical problems of simplifying the structure and optimizing the use performance.

[0009] The film dynamic projection device of the present invention is realized as follows:

[0010] A film dynamic projection device, comprising:

[0011] A light-emitting assembly comprising at least one light source and a focusing lens group arranged directly in front of the light source;

[0012] The film assembly includes a film sheet located in front of the focusing lens group, a rotating gear for fixing the film sheet, and a driving group connected to the rotating gear for driving the rotating gear to rotate;

[0013] The imaging lens module is arranged in front of the film and is suitable for being detachably connected with the rotating gear.

[0014] In an optional embodiment of the present invention, a first assembly hole for fixing the film and a second assembly hole for connecting the imaging lens module are formed at the axis of the rotating gear; and

[0015] The first assembly hole and the second assembly hole are coaxially distributed and connected through each other.

[0016] In an optional implementation of the present invention, the first assembly hole and the second assembly hole are both cylindrical through holes; and

[0017] An annular blocking portion is formed between the first assembly hole and the second assembly hole.

[0018] In an optional implementation of the present invention, the film sheet is bonded to the first assembly hole.

[0019] In an optional implementation of the present invention, the imaging lens module is screwed into the second assembly hole.

[0020] In an optional implementation of the present invention, the driving group includes a driving wheel meshed with the rotating gear, and a motor for driving the driving wheel to rotate.

[0021] In an optional implementation of the present invention, the film dynamic projection device further includes a partition for supporting the rotating gear; and

[0022] The condenser lens group is mounted on the partition; and

[0023] The rotating gear and the focusing lens group are respectively arranged on two opposite side ends of the partition.

[0024] In an optional implementation of the present invention, the partition is provided with an assembly cavity for fixing the focusing lens group; and

[0025] The end surface of the partition facing the rotating gear is provided with a light-through hole communicated with the assembly cavity.

[0026] In an optional implementation of the present invention, the rotating gear is connected to the partition through a bearing.

[0027] In an optional embodiment of the present invention, the film dynamic projection device further includes

[0028] an outer shell for fixing the partition; and

[0029] The outer shell has a hollow cavity for accommodating the light emitting component, the film component and the imaging lens module; and

[0030] At least one of the light emitting sources is fixed on the inner wall of the hollow cavity so that the at least one light emitting source faces the focusing lens group.

[0031] By adopting the above technical solution, the utility model has the following beneficial effects: the film dynamic projection device of the utility model drives the film to rotate by rotating gears, so that the pattern formed by the light irradiating the film keeps rotating at a certain speed, and finally the pattern output by the imaging lens module forms a dynamic effect, wherein the film is directly fixed on the rotating gear, which simplifies the structure of the overall film dynamic projection device, thereby simplifying the assembly process and reducing production costs.

[0032] In addition, for the imaging lens module, it can form a threaded connection structure with the rotating gear, which can adjust the clarity of the projected scene. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Shown is a schematic diagram of the exploded structure of the film dynamic projection device of the present invention;

[0034] Figure 2 FIG2 is a schematic diagram of the internal cross-sectional structure of the film dynamic projection device of the present invention;

[0035] Figure 3 The figure shows the internal partial cross-sectional structure of the film dynamic projection device of the present invention. Figure 1 ;

[0036] Figure 4 The figure shows the internal partial cross-sectional structure of the film dynamic projection device of the present invention. Figure 2 ;

[0037] Figure 5The figure shows the internal partial cross-sectional structure of the film dynamic projection device of the present invention. Figure 3 .

[0038] In the figure: outer shell 11, cover 12, PCB light board 2, first lens 31, second lens 32, film 4, rotating gear 5, first assembly hole 51, second assembly hole 52, imaging lens module 6, motor 71, driving wheel 72, partition 8, assembly cavity 81, retaining ring 82, bearing 9, light source 10. DETAILED DESCRIPTION

[0039] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0040] See also Figures 1 to 5 As shown, this embodiment provides a film dynamic projection device, comprising: an outer shell 11 and a light-emitting assembly, a film assembly, and an imaging lens module 6 disposed within the outer shell 11. The outer shell 11 has a hollow cavity for accommodating the light-emitting assembly, the film assembly, and the imaging lens module 6. The outer shell 11 is also equipped with a cover plate 12 for sealing the hollow cavity. The cover plate 12 is disposed on the light-emitting surface of the imaging lens module 6. Therefore, considering the need for light emission, the cover plate 12 is made of a transparent material.

[0041] In this regard, generally speaking, the light-emitting component includes at least one light-emitting light source 10, and a focusing lens group arranged directly in front of the light-emitting light source 10. The focusing lens group here can optionally include a first lens 31 and a second lens 32 used in conjunction with each other. The focusing lens group is used to focus the light emitted by at least one light-emitting light source 10 to increase the light intensity. The film component includes a film 4 arranged directly in front of the focusing lens group, a rotating gear 5 for fixing the film 4, and a driving group connected to the rotating gear 5 for driving it to rotate. The imaging lens module 6 is arranged directly in front of the film 4, and the imaging lens module 6 is suitable for being detachably connected to the rotating gear 5. For example, in an optional embodiment, the imaging lens module 6 includes at least one imaging lens, at least one adjustment lens and at least one wide-angle lens arranged in sequence in the projection direction of the film 4. The second imaging lens is used to collect the effective pattern light spots passing through the film 4, thereby forming a real image pattern and projecting it to the adjustment lens. The adjustment lens then reorganizes and corrects the real image pattern and projects it to the wide-angle lens. The wide-angle lens magnifies the adjusted real image pattern and projects it onto the light and shadow bearing surface, thereby presenting a clear and magnified pattern effect on the light and shadow bearing surface.

[0042] Here, at least one light source 10 is fixed on the inner wall of the hollow cavity so that the at least one light source 10 faces the condenser lens group. As for the light source 10, it is generally fixed on the PCB light board 2.

[0043] Here, in conjunction with the accompanying drawings, a relatively simplified example is provided, in which the drive assembly includes a driving wheel 72 meshing with the rotating gear 5, and a motor 71 for driving the driving wheel 72 to rotate. In this structure, through the action of the motor 71, the driving gear, and the rotating gear 5, and through the speed conversion between the motor 71 and the rotating gear 5, the pattern on the film 4 rotates more smoothly, avoiding the jerking sensation caused by the low-speed rotation of the motor 71.

[0044] Based on the above situation, furthermore, in order to enable the rotating gear 5 to adapt to the fixing requirements of the film 4 and the imaging lens module 6, a first assembly hole 51 for fixing the film 4 and a second assembly hole 52 for matching the imaging lens module 6 are formed at the axis of the rotating gear 5; and the first assembly hole 51 and the second assembly hole 52 are coaxially distributed and connected through.

[0045] Based on the above, let's take an optional implementation as an example. The first assembly hole 51 and the second assembly hole 52 are both cylindrical through holes; and an annular barrier is formed between the first assembly hole 51 and the second assembly hole 52. The annular barrier can form a barrier between the first assembly hole 51 and the second assembly hole 52, which is used to fix the film 4, but will not affect the light transmission requirements between the film 4 and the imaging lens module 6. In this regard, it should be noted that this embodiment does not make an absolute limitation on the relationship between the inner diameters of the first assembly hole 51 and the second assembly hole 52. The accompanying drawings of this embodiment only use the case where the inner diameter of the first assembly hole 51 is smaller than that of the second assembly hole 52 as an example. In this structure, the film 4 is adhesively connected to the first assembly hole 51. The imaging lens module 6 is screwed into the second assembly hole 52.

[0046] Furthermore, it is necessary to explain that the film dynamic projection device of this embodiment further includes a partition 8 for supporting the rotating gear 5; a condenser lens assembly mounted on the partition 8; and the rotating gear 5 and the condenser lens assembly are respectively disposed on two opposite sides of the partition 8. The motor 71 is also fixed to the partition 8.

[0047] In more detail, the partition plate 8 is provided with an assembly cavity 81 for fixing the focusing lens group; and the end surface of the partition plate 8 facing the rotating gear 5 is provided with a light hole connected to the assembly cavity 81. It should be noted that the matching relationship between the focusing lens group and the assembly cavity 81 is as follows:

[0048] For the focusing lens group placed in the assembly cavity 81, one axial side end thereof abuts against the inner bottom wall of the assembly cavity 81, while the other axial side end of the focusing lens group is limited by a retaining ring 82 that is snapped into the assembly cavity 81. The design of the retaining ring 82 is convenient and reliable to assemble.

[0049] In addition to the above structure, it should be noted that, in an optional embodiment, the rotating gear 5 is connected to the partition 8 via a bearing 9. The design of the bearing 9 here not only ensures the normal rotation of the rotating gear 5 relative to the partition 8, but also better ensures the coaxiality between the focusing lens group, the film 4, and the imaging lens module 6, thereby improving the accuracy of the overall film dynamic projection device. Furthermore, the coaxial arrangement of the light source 10, the focusing lens group, the film, and the imaging lens module 6 here can effectively reduce the loss of light emitted by the light source 10, thereby improving the brightness of the pattern projected by the film dynamic projection device.

[0050] In summary, the specific implementation principles of the film dynamic projection device of this embodiment are as follows:

[0051] When the PCB light board 2 is powered, the light source 10 emits bright light, which is focused by the focusing lens group and then irradiated on the film 4 to form a pattern light beam. The formed pattern light beam is projected onto the imaging lens module 6 at the front end and the image is projected onto the ground. During this process, after the motor 71 is activated, it drives the rotating gear 5 to rotate, and at the same time drives the film 4 fixed to the rotating gear 5 to rotate, so that the pattern formed by the light irradiating on the film 4 keeps rotating at a certain speed, and finally the pattern coming out of the imaging lens module 6 forms a dynamic effect. The film 4 is directly fixed on the rotating gear 5, which simplifies the structure of the overall film dynamic projection device, thereby simplifying the assembly process and reducing production costs. Moreover, for the imaging lens module 6, it can form a threaded connection structure with the rotating gear 5, which can adjust the clarity of the projected scene.

[0052] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0053] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0054] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0055] In the present invention, unless otherwise expressly specified or limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A film dynamic projection device, characterized in that: include: A light-emitting assembly comprising at least one light source and a focusing lens group arranged directly in front of the light source; The film assembly includes a film sheet located in front of the focusing lens group, a rotating gear for fixing the film sheet, and a driving group connected to the rotating gear for driving the rotating gear to rotate; The imaging lens module is arranged in front of the film and is suitable for being detachably connected with the rotating gear.

2. The film dynamic projection device according to claim 1, characterized in that: A first assembly hole for fixing the film and a second assembly hole for connecting the imaging lens module are formed at the axis of the rotating gear; and The first assembly hole and the second assembly hole are coaxially distributed and connected through each other.

3. The film dynamic projection device according to claim 2, characterized in that: The first assembly hole and the second assembly hole are both cylindrical through holes; and An annular blocking portion is formed between the first assembly hole and the second assembly hole.

4. The film dynamic projection device according to claim 2 or 3, characterized in that: The film sheet is bonded to the first assembly hole.

5. The film dynamic projection device according to claim 2 or 3, characterized in that: The imaging lens module is screw-connected with the second assembly hole.

6. The film dynamic projection device according to claim 1, characterized in that: The driving group includes a driving wheel meshed with the rotating gear, and a motor for driving the driving wheel to rotate.

7. The film dynamic projection device according to claim 1, characterized in that: The film dynamic projection device further includes a partition for supporting the rotating gear; as well as The condenser lens group is mounted on the partition; and The rotating gear and the focusing lens group are respectively arranged at two opposite side ends of the partition.

8. The film dynamic projection device according to claim 7, characterized in that: The partition is provided with an assembly cavity for fixing the focusing lens group; and The end surface of the partition facing the rotating gear is provided with a light-through hole communicated with the assembly cavity.

9. The film dynamic projection device according to claim 7 or 8, characterized in that: The rotating gear is connected to the partition plate through a bearing.

10. The film dynamic projection device according to claim 7 or 8, characterized in that: described The film dynamic projection device further comprises an outer shell for fixing the partition; and The outer shell has a hollow cavity for accommodating the light emitting component, the film component and the imaging lens module; as well as At least one of the light emitting sources is fixed on the inner wall of the hollow cavity so that the at least one light emitting source faces the focusing lens group.

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