Three-dimensional (3D) variable tail lamp

Abstract

The utility model discloses a 3D variable tail lamp which comprises a tail lamp light guide plate, a transparent grating film tightly attached to the front face of the tail lamp light guide plate and an LED lamp strip arranged on the side face of the tail lamp light guide plate. The surface, close to the transparent grating film, of the tail lamp light guide plate is divided into a plurality of first strip-shaped areas, second strip-shaped areas and third strip-shaped areas which are sequentially and circularly arranged, and a left projection pattern, an orthographic projection pattern and a right projection pattern of the same 3D tail lamp model are formed on the first strip-shaped areas, the second strip-shaped areas and the third strip-shaped areas correspondingly. A plurality of cylindrical lenses are formed on the light emitting surface of the transparent grating film. According to the utility model, by changing the observation angle of the human eyes, the tail lamp light irradiated into the human eyes is changed, a three-dimensional tail lamp shape is formed in the brain, and meanwhile, the scheme is small in size and light in weight, and can be applied to various vehicle types.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile lamps, in particular to a 3D stereo variable taillight. Background Art

[0002] In the field of automotive lighting, the common three-dimensional shape of taillights is currently achieved by thick-walled parts or light guides, and the shape is fixed and cannot be changed. The common taillight shape includes a shell, a PCB board, a light guide (thick wall), a light blocking structure, a decorative ring and an outer lampshade. In order to achieve a three-dimensional shape, the light guide and the thick wall often need to occupy a large space to ensure the realization of the installation structure and effect. The installation structure of this type of solution is generally complex, which will increase the weight of the entire lamp and increase the volume, which is inconsistent with the current popular trend of flattening the shape of automotive lights. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a 3D stereo variable taillight, which changes the taillight shining into the human eye by changing the observation angle of the human eye, forming a three-dimensional taillight shape in the brain. At the same time, this solution is small in size and light in weight, and can be applied to a variety of vehicle models.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A 3D variable taillight, comprising a taillight light guide plate, a transparent grating film closely arranged on the front of the taillight light guide plate, and an LED light strip arranged on the side of the taillight light guide plate;

[0006] The surface of the taillight light guide plate close to the transparent grating film is divided into a plurality of first strip areas, second strip areas and third strip areas which are arranged in a circular pattern in sequence, and the first strip areas, the second strip areas and the third strip areas are respectively formed with a left projection pattern, a front projection pattern and a right projection pattern of the same 3D taillight shape;

[0007] A plurality of cylindrical lenses are formed on the light-emitting surface of the transparent grating film.

[0008] Furthermore, the widths of the first strip area, the second strip area, and the third strip area are equal.

[0009] Furthermore, the width of a single cylindrical lens is equal to the sum of the widths of the first strip-shaped area and the second strip-shaped area.

[0010] Furthermore, the projection angle between the left projection pattern and the orthographic projection pattern is 20°, and the projection angle between the right projection pattern and the orthographic projection pattern is 20°.

[0011] Furthermore, the taillight light guide plate is made of transparent PMMA or PC.

[0012] Furthermore, the left projection pattern, the front projection pattern and the right projection pattern are all formed by laser engraving.

[0013] By adopting the above technical solution, the utility model has the following beneficial effects:

[0014] 1. The utility model divides the surface of the taillight light guide plate into three strip areas arranged at intervals in a cycle, and laser engraves three projection patterns of the same 3D taillight shape on the surfaces of the three strip areas, and then designs the surface of the transparent grating film to be formed into a microstructure of multiple cylindrical lenses; this is different from the traditional three-dimensional modeling structure, and adopts a surface luminescence method, so that the light passes through the three projection patterns and then enters the human eye after being refracted by the transparent grating film, so as to form a three-dimensional modeling effect; this structure is simple and lightweight, occupies little space, and is more in line with the current popular trend of flattening the shape of car lights.

[0015] 2. The utility model can achieve the effect of three-dimensional virtual image and variable shape, and can achieve a shape different from the existing taillight. The light reflected by the taillight light guide plate passes through the transparent grating film, refracts and converges the light before entering the human eye; and there is a distance between the human eyes, and the light entering the eyes is generated by two pictures. The brain synthesizes the images of the two different pictures to produce a three-dimensional virtual image with a depth image; when the image is two completely different taillight shapes, two completely different shapes will be produced through the change of viewing angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure decomposition of the first embodiment of the utility model;

[0017] Figure 2 This is a side structural diagram of the first embodiment of the utility model;

[0018] Figure 3 It is a projection view of three projection patterns of the first embodiment of the utility model;

[0019] Figure 4 This is a front reference schematic diagram of the second embodiment of the present utility model;

[0020] Among them, 1. taillight light guide plate; 11. first strip area; 12. second strip area; 13. third strip area; 2. transparent grating film; 20. cylindrical lens; 3. LED light strip; 100. front projection pattern; 101. left projection pattern; 102. right projection pattern. DETAILED DESCRIPTION

[0021] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0022] like Figure 1-4As shown, in this embodiment, a 3D variable taillight is provided, which is mainly composed of an external shell and a taillight light guide plate 1, a transparent grating film 2 and an LED light strip 3 arranged therein. The transparent grating film 2 is tightly fixed on the front of the taillight light guide plate 1, and the LED light strip 3 is installed on the side of the taillight light guide plate 1. The material of the taillight light guide plate 1 is transparent PMMA or PC.

[0023] In order to form a three-dimensional modeling effect, the surface of the taillight light guide plate 1 close to the transparent grating film 2 is divided into a plurality of first strip areas 11, second strip areas 12 and third strip areas 13 which are arranged in a circular manner in sequence, and the left projection pattern 101, the orthographic projection pattern 100 and the right projection pattern 102 of the same 3D taillight modeling are laser engraved on the first strip area 11, the second strip area 12 and the third strip area 13 respectively, the projection angle between the left projection pattern 101 and the orthographic projection pattern 100 is 20°, and the projection angle between the right projection pattern 102 and the orthographic projection pattern 100 is also 20°. At the same time, a plurality of cylindrical lenses 20 are formed on the light-emitting surface of the transparent grating film 2, the widths of the first strip area 11, the second strip area 12 and the third strip area 13 are equal, and the width of a single cylindrical lens 20 is equal to the sum of the widths of the first strip area 11 and the second strip area 12.

[0024] In order to achieve the effect of three-dimensional change, the 3D taillight shape can be rendered by three-dimensional modeling. After exporting the projection views of multiple angles, the pattern is engraved in partitions on the surface of the taillight light guide plate 1, where the width of a single area of ​​the pattern depends on the size of the taillight and the number of patterns. The refraction and focusing of light are used to affect the focus position of the pattern and the minimum distance required to move for the pattern to change.

[0025] refer to Figure 1-3 In the embodiment 1 shown, Figure 3 These are three projection views of the same 3D taillight shape. The middle one is the orthographic projection view, and the left and right ones are projection views rotated 20 degrees. They are laser engraved on the first strip area 11, the second strip area 12 and the third strip area 13 on the surface of the taillight light guide plate 1, respectively, to form the final left projection pattern 101, the orthographic projection pattern 100 and the right projection pattern 102. The molding effect can be seen from Figure 1 Furthermore, see Figure 4 In the second embodiment shown, another 3D taillight shaping effect can be seen.

[0026] With such a design, the taillight light guide plate 1 guides the light emitted by the LED light strip 3 to various areas of the light guide plate by reflection; since there is a laser engraved pattern on the surface of the taillight light guide plate 1, when the light reaches the engraved pattern area, the light escapes from the surface of the structure and enters the transparent grating film 2, and then enters the human eye after being refracted by the cylindrical lens 20 to form a three-dimensional pattern. When people stand at different positions at the rear of the car, they can see the taillight shapes in different areas; when people walk at the rear of the car, the taillight shape area entering the human eye is constantly changing, and because there is a distance between the left and right eyes, the images entering the left and right eyes are also different, forming two perspectives of the taillight shape in the brain, so a three-dimensional changing visual effect will be formed. According to the following distance of daily driving and the distance of pedestrians from the car, the optimal field of view of the grating light should meet 2-15 meters.

[0027] It can be seen from the above design that the structure of this embodiment is different from the traditional three-dimensional modeling structure. It adopts a surface light-emitting method, so that the light passes through three projection patterns and then enters the human eye after being refracted by a transparent grating film to form a three-dimensional modeling effect; this structure is simple and lightweight, occupies little space, and is more in line with the current popular trend of flattening of car lights.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] The above specific embodiments further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. 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 protection scope of the present invention.

Claims

1. A 3D variable taillight, characterized by: It comprises a tail light guide plate (1), a transparent grating film (2) arranged in close contact with the front of the tail light guide plate (1), and an LED light strip (3) arranged on the side of the tail light guide plate (1); The surface of the taillight light guide plate (1) close to the transparent grating film (2) is divided into a plurality of first strip areas (11), second strip areas (12) and third strip areas (13) which are arranged in a circular pattern in sequence; the first strip areas (11), the second strip areas (12) and the third strip areas (13) are respectively formed with a left projection pattern (101), a front projection pattern (100) and a right projection pattern (102) of the same 3D taillight shape; A plurality of cylindrical lenses (20) are formed on the light-emitting surface of the transparent grating film (2).

2. The 3D variable taillight according to claim 1, characterized in that: The first strip area (11), the second strip area (12), and the third strip area (13) have the same width.

3. The 3D variable taillight according to claim 2, characterized in that: The width of a single cylindrical lens (20) is equal to the sum of the widths of the first strip-shaped area (11) and the second strip-shaped area (12).

4. The 3D variable taillight according to claim 1, characterized in that: The projection angle between the left projection pattern (101) and the orthographic projection pattern (100) is 20°, and the projection angle between the right projection pattern (102) and the orthographic projection pattern (100) is 20°.

5. The 3D variable taillight according to claim 1, characterized in that: The material of the tail light light guide plate (1) is transparent PMMA or PC.

6. The 3D variable taillight according to claim 1, characterized in that: The left projection pattern (101), the front projection pattern (100) and the right projection pattern (102) are all formed by laser engraving.

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