A car projection device with switchable patterns

Abstract

The utility model belongs to the field of automobile projection, and specifically relates to an automobile projection device with switchable patterns, which comprises: a rotating motor, at least one group of lens components, a film and a circuit board; the film is sleeved on the rotating shaft of the rotating motor; a plurality of patterns of different shapes are arranged on the film; the circuit board is located at the lower end of the film, and at least one light source is arranged on the circuit board; each lens component comprises a projection lens and a condenser lens, the film is arranged between the projection lens and the condenser lens, a light source is arranged at the lower end of each condenser lens, and the projection lens, the condenser lens and the light source are arranged along the same optical axis. The utility model drives the film to rotate by rotating the rotating shaft, and at the same time, the light beam emitted by the light source is irradiated onto the film through the condenser lens, and the light beam continues to pass through the projection lens and is projected onto a projection screen or other surfaces, and the rotating shaft drives the film to rotate so that the area irradiated by the light source on the film is also changed accordingly, and finally the projection pattern can be changed.

Description

Technical Field

[0001] The utility model belongs to the field of automobile projection, and in particular relates to an automobile projection device with switchable patterns. Background Art

[0002] Film projection is a traditional projection technology that uses transparent film or film to project light through the film or film to a screen or other surface to achieve image mapping. Film projection lamps are usually composed of a light source, a lens, and a film sheet. Its working principle is as follows:

[0003] First, the image to be projected is made using film and loaded into the projector lamp; then, the light source is turned on to generate a light beam, which is focused onto the film by a lens; finally, the light passes through the film or film and is projected onto a projection screen or other surface with the aid of an imaging lens, forming a clear image.

[0004] Since film projection technology is a traditional projection technology, its projection effect and user experience have the following disadvantages:

[0005] (1) Since the projection pattern depends on the design of the film, the projection pattern cannot be changed and the projection effect is single; and the film and imaging lens are usually fixed in combination, and can only project patterns with fixed magnifications.

[0006] (2) Although it is currently possible to achieve dynamic projection effects by combining multiple film lenses, the number of dynamic frames presented is determined by the number of film lenses, and a continuous dynamic projection effect cannot be achieved. Utility Model Content

[0007] In view of this, in order to solve the problems existing in the prior art, the purpose of the utility model is to provide a car projection device with switchable patterns, to achieve the effect of switchable projection patterns, to solve the problem of single and immutable projection patterns, and to achieve a dynamic and continuous projection effect.

[0008] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0009] A pattern-switchable automotive projection device, comprising: a rotating motor, at least one set of lens components, a film and a circuit board;

[0010] The output end of the rotating motor has a rotating shaft, and the film is sleeved outside the rotating shaft and rotates synchronously with the rotating shaft;

[0011] The film is provided with a plurality of patterns of different shapes;

[0012] The circuit board is located below the film, at least one light source is arranged on the circuit board, and the circuit board is sleeved on the outer side of the rotating shaft;

[0013] Each of the lens assemblies comprises: a projection lens and a condenser lens, wherein the projection lens and the condenser lens are respectively arranged above and below the film, and a light source is arranged below each condenser lens, and the projection lens, the condenser lens and the light source are arranged along the same optical axis.

[0014] The specific technical effect is: a number of patterns of different shapes are set on the film, and the film is driven to rotate by rotating the shaft. At the same time, the light beam emitted by the light source is irradiated onto the film through a focusing lens, and the light beam continues to pass through the projection lens and is projected onto the projection screen or other surfaces. The rotation of the shaft drives the film to rotate, so that the area irradiated by the light source on the film also changes, and finally the projection pattern can be changed.

[0015] Furthermore, it also includes: a shell, the rotating motor, the projection lens, the focusing lens, the film and the circuit board are all arranged in the shell, the circuit board and the focusing lens are both installed on the inner wall of the shell, and the projection lens is installed on the upper end of the shell.

[0016] Furthermore, the condenser lens includes two positive lenses.

[0017] The specific technical effect is: it plays the role of focusing the light beam emitted by the light source onto the film.

[0018] Furthermore, the two positive lenses are made of high temperature resistant material.

[0019] Furthermore, each of the projection lenses has a focal length, and the focal lengths are different from each other.

[0020] The specific technical effect is that each projection lens adopts a different focal length to achieve the switching of the magnification of the pattern.

[0021] Furthermore, each of the projection lenses has an object plane, and the outer contour of each of the object planes is greater than or equal to the outer contour of the pattern corresponding thereto.

[0022] The specific technical effect is: ensuring that the pattern is completely projected onto the projection screen or other surfaces.

[0023] Furthermore, the film is arranged in a disc-shaped structure, and a plurality of the patterns are arranged in a ring-shaped array around the axis of the disc-shaped structure.

[0024] The specific technical effect is: a number of patterns are arranged in a central ring array on the film, ensuring that when the film is rotating, the projected dynamic pattern is dynamic and continuous, reducing the abruptness and frustration when the pattern changes.

[0025] Furthermore, an outer circumference of the lower end of the projection lens is provided with an external thread.

[0026] The specific technical effect is: it is easy to install the projection lens.

[0027] Furthermore, a through hole is provided on the circuit board, the rotating shaft passes through the through hole, and the diameter of the through hole is larger than the diameter of the rotating shaft.

[0028] The specific technical effect is that the diameter of the through hole is larger than the diameter of the rotating shaft, which not only ensures that the circuit board and the film are connected, but also prevents the rotating shaft from rotating and driving the circuit board to rotate.

[0029] Furthermore, the film is provided with two arc-shaped holes arranged opposite to each other, the upper end of the rotating shaft protrudes upward to form two positioning posts cooperating with the arc-shaped holes, and each of the positioning posts passes through one of the arc-shaped holes.

[0030] The specific technical effect is: it is easy to limit and install the film.

[0031] Furthermore, each of the positioning posts is arranged in a semicircular structure, and there is a distance between the two positioning posts.

[0032] The beneficial effects of the utility model are:

[0033] (1) A plurality of patterns of different shapes are arranged on the film, and the film is driven to rotate by the rotation of the shaft. At the same time, the light beam emitted by the light source is irradiated onto the film through the focusing lens, and the light beam continues to pass through the projection lens and is projected onto the projection screen or other surfaces. The rotation of the shaft drives the film to rotate, so that the area irradiated by the light source on the film also changes accordingly, and finally the projection pattern can be changed. The structure is simple and the cost is low;

[0034] (2) By controlling the rotation speed and rotation angle of the rotating motor to control the rotation of the film, the projection pattern can be dynamically and continuously changed, reducing the abruptness and frustration when the pattern changes.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0037] Figure 1 It is a structural schematic diagram of embodiment 1 of the utility model;

[0038] Figure 2 yes Figure 1 A top view of

[0039] Figure 3 It is a structural schematic diagram of embodiment 2 of the present utility model.

[0040] In the figure:

[0041] 1. Rotating motor; 2. Circuit board; 3. Film; 4. Light source; 5. Focusing lens; 6. Projection lens; 7. Rotating shaft; 8. Lens assembly; 9. External thread; 10. Arc hole; 11. Positioning column; 12. Shell. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] A pattern-switchable automotive projection device, comprising: a rotating motor 1, at least one set of lens components 8, a film 3 and a circuit board 2;

[0044] The rotating motor 1 has a rotating shaft 7, and the film 3 is sleeved on the rotating shaft 7;

[0045] The film 3 is provided with a plurality of patterns of different shapes;

[0046] The circuit board 2 is located at the lower end of the film 3, and at least one light source 4 is disposed on the circuit board 2;

[0047] Each lens assembly 8 includes: a projection lens 6 and a condenser lens 5, which are respectively arranged at the upper end and the lower end of the film 3, and a light source 4 is arranged at the lower end of each condenser lens 5. The projection lens 6, the condenser lens 5 and the light source 4 are arranged along the same optical axis.

[0048] It should be noted here that: a number of patterns of different shapes are set on the film 3, and the film 3 is driven to rotate by the rotation of the rotating shaft 7. At the same time, the light beam emitted by the light source 4 is irradiated onto the film 3 through the focusing lens 5, and the light beam continues to pass through the projection lens 6 and is projected onto the projection screen or other surfaces. The rotation of the rotating shaft 7 drives the film 3 to rotate, so that the area irradiated by the light source 4 on the film 3 also changes, and finally the projection pattern can be changed.

[0049] It also includes: a shell 12, in which the rotating motor 1, the focusing lens 5, the film 3 and the circuit board 2 are all installed, the rotating motor 1, the focusing lens 5 and the circuit board 2 are all fixedly connected to the shell 12, and the projection lens 6 is installed at the upper end of the shell 12.

[0050] The rotation speed and rotation angle of the rotating electrical machine 1 can be adjusted and controlled according to actual needs.

[0051] Embodiment 1:

[0052] like Figure 1 to Figure 2 As shown, the number of lens assemblies 8 is one group, the number of light sources 4 on the circuit board 2 is also one, and the light source 4 and the lens assembly 8 are arranged along the same optical axis.

[0053] The condenser lens 5 includes two positive lenses.

[0054] It should be noted here that the two positive lenses are stacked to focus the light beam emitted by the light source 4 onto the film 3 .

[0055] The two positive lenses are made of high temperature resistant material.

[0056] High temperature resistant materials can be made of PC or glass.

[0057] The film 3 is arranged in a disc-shaped structure, and a plurality of patterns are arranged in a ring shape around the axis of the disc-shaped structure.

[0058] It should be noted here that: a plurality of patterns are arranged in a central annular array of the film sheet 3 to ensure that the film sheet 3 is in a rotating state, and the projected dynamic pattern is dynamic and continuous, thereby reducing the abruptness and frustration when the pattern changes.

[0059] The outer circumference of the lower end of the projection lens 6 is provided with an external thread 9 .

[0060] It should be noted here that a mounting hole is provided at the upper end of the housing 12 , and an internal thread matching the external thread 9 is provided on the mounting hole to facilitate the assembly and disassembly of the projection lens 6 .

[0061] The circuit board 2 is provided with a through hole, through which the rotating shaft 7 passes. The diameter of the through hole is larger than the diameter of the rotating shaft 7 .

[0062] It should be noted here that the diameter of the through hole is larger than the diameter of the rotating shaft 7 , which not only ensures that the circuit board 2 and the film 3 are coaxially arranged, but also prevents the rotating shaft 7 from rotating and driving the circuit board 2 to rotate.

[0063] The film 3 is provided with two arc-shaped holes 10 which are arranged opposite to each other. The upper end of the rotating shaft 7 protrudes upward to form two positioning posts 11 which cooperate with the arc-shaped holes 10 . Each positioning post 11 passes through one arc-shaped hole 10 .

[0064] It should be noted here that the design of inserting the film sheet 3 on the positioning column 11 is adopted to facilitate the positioning and installation of the film sheet 3 .

[0065] Each positioning post 11 is arranged in a semicircular structure, and there is a distance between two positioning posts 11 .

[0066] The working principle of Example 1 is as follows:

[0067] When the light source 4 on the circuit board 2 is turned on, the light beam emitted by the light source 4 is focused onto the film 3 through the focusing lens 5, and the light beam passes through the pattern on the film 3 and is finally imaged onto the projection screen or other surfaces by the projection lens 6. During operation, the light beam is only irradiated on a certain area of ​​the film 3, so only the pattern in the irradiated area is projected. By starting the rotating motor 1, the rotating shaft 7 rotates to drive the film 3 to rotate, and the pattern irradiated on the film 3 also changes accordingly, and finally the projection pattern can be changed.

[0068] Embodiment 2:

[0069] like Figure 3 As shown, the difference from Example 1 is that the number of lens assemblies 8 is three groups, the number of light sources 4 on the circuit board 2 is also three, each light source 4 is arranged corresponding to a lens assembly 8, and each light source 4 is arranged along the same optical axis as a lens assembly 8.

[0070] It should be noted that the three groups of lens assemblies 8 are arranged in a central annular array on the film 3 .

[0071] Each projection lens 6 has a focal length, and the focal lengths of the three projection lenses 6 are different from each other.

[0072] It should be noted here that each projection lens 6 adopts a different focal length to achieve the switching of the magnification of the pattern.

[0073] Each projection lens 6 has an object surface, and the outer contour of each object surface is greater than or equal to the outer contour of the pattern corresponding thereto.

[0074] What needs to be explained here is: ensure that the pattern is completely projected onto the projection screen or other surface.

[0075] The working principle of the second embodiment is as follows: if the car needs to use a pattern with a certain focal length during projection, one of the light sources 4 on the circuit board 2 is lit up through the circuit board 2, and the light beam emitted by the light source 4 is focused onto the film 3 through the focusing lens 5. The light beam passes through the pattern on the film 3 and is finally imaged onto the projection screen or other surfaces by the projection lens 6 corresponding to the light source 4. During operation, the light beam is only irradiated on a certain area of ​​the film 3, so only the pattern in the irradiated area is projected. By starting the rotating motor 1, the rotating shaft 7 rotates to drive the film 3 to rotate, and the pattern irradiated on the film 3 also changes accordingly, and finally the projection pattern can be changed, and the pattern can be projected through the projection lens 6 with different focal lengths by illuminating different light sources 4, so as to realize the switching of the magnification of the projection pattern.

[0076] In summary, the beneficial effects of the utility model are:

[0077] (1) A plurality of patterns of different shapes are arranged on the film 3, and the film 3 is driven to rotate by the rotation of the rotating shaft 7. At the same time, the light beam emitted by the light source 4 is irradiated onto the film 3 through the focusing lens 5, and the light beam continues to pass through the projection lens 6 and is projected onto the projection screen or other surfaces. The rotation of the rotating shaft 7 drives the film 3 to rotate, so that the area irradiated by the light source 4 on the film 3 also changes accordingly, and finally the projection pattern can be changed. The structure is simple and the cost is low;

[0078] (2) By controlling the rotation speed and rotation angle of the rotating motor 1 to control the rotation of the film 3, it is possible to achieve dynamic and continuous changes in the projection pattern, reducing the abruptness and frustration when the pattern changes.

[0079] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0080] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0082] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A car projection device with switchable patterns, characterized in that: include: A rotating motor (1), at least one set of lens components (8), a film (3) and a circuit board (2); The output end of the rotating motor (1) is provided with a rotating shaft (7), and the film (3) is sleeved outside the rotating shaft (7) and rotates synchronously with the rotating shaft (7); The film (3) is provided with a plurality of patterns of different shapes; The circuit board (2) is located below the film sheet (3), at least one light source (4) is arranged on the circuit board (2), and the circuit board (2) is sleeved on the outside of the rotating shaft (7); Each of the lens assemblies (8) comprises: a projection lens (6) and a condenser lens (5); the projection lens (6) and the condenser lens (5) are respectively arranged above and below the film (3); a light source (4) is arranged below each of the condenser lenses (5); and the projection lens (6), the condenser lens (5) and the light source (4) are arranged along the same optical axis.

2. A pattern switchable automobile projection device as claimed in claim 1, characterized in that: Also includes: A housing (12), wherein the rotating motor (1), the projection lens (6), the condenser lens (5), the film (3) and the circuit board (2) are all arranged in the housing (12); the circuit board (2) and the condenser lens (5) are both mounted on the inner wall of the housing (12); and the projection lens (6) is mounted on the upper end of the housing (12).

3. A pattern switchable automobile projection device as claimed in claim 1, characterized in that: The condenser lens (5) comprises two positive lenses, and the material of the two positive lenses is made of high temperature resistant material.

4. A pattern switchable automobile projection device as claimed in claim 1, characterized in that: Each of the projection lenses (6) has a focal length, and the focal lengths are different from each other.

5. A pattern-switchable automobile projection device as claimed in claim 1, characterized in that: Each of the projection lenses (6) has an object plane, and the outer contour of each of the object planes is greater than or equal to the outer contour of the pattern corresponding thereto.

6. A pattern-switchable automobile projection device as claimed in claim 1, characterized in that: The film (3) is arranged in a disc-shaped structure, and a plurality of the patterns are arranged in a ring-shaped array around the axis of the disc-shaped structure.

7. A pattern-switchable automobile projection device as claimed in claim 1, characterized in that: The outer periphery of the lower end of the projection lens (6) is provided with an external thread (9).

8. The pattern-switchable automobile projection device as claimed in claim 1, characterized in that: The circuit board (2) is provided with a through hole, the rotating shaft (7) passes through the through hole, and the diameter of the through hole is greater than the diameter of the rotating shaft (7).

9. The pattern-switchable automobile projection device as claimed in claim 1, characterized in that: The film sheet (3) is provided with two arc-shaped holes (10) arranged opposite to each other, and the upper end of the rotating shaft (7) protrudes upward to form two positioning posts (11) matched with the arc-shaped holes (10), and each positioning post (11) passes through one of the arc-shaped holes (10).

10. The pattern-switchable automobile projection device as claimed in claim 9, characterized in that: Each of the positioning posts (11) is arranged in a semicircular structure, and there is a distance between the two positioning posts (11).

Images