3D area light source optical structure and vehicle lamp using same

Abstract

The utility model discloses a 3D area light source optical structure and a car lamp using the same. The 3D area light source optical structure comprises an area light source module and a light guide plate assembly connected with the area light source module. The light guide plate assembly comprises a light guide support and at least one light guide plate arranged on the light guide support. The light guide plate is made of a colorless transparent material and comprises a light incident surface, a light reflecting surface and a light emergent surface; reflective diamond patterns which are arranged in a three-dimensional manner are arranged on the reflective surface; the reflective diamond patterns comprise a plurality of reflective pyramid-shaped recesses which are uniformly arranged and reflective baffle walls formed between the adjacent reflective pyramid-shaped recesses; the surface light source module comprises a circuit board fixed on the light guide bracket and a light source unit which is arranged on the circuit board and corresponds to the light incident surface of the light guide plate; light emitted by the light source unit enters the light guide plate through the light inlet surface, is reflected by the surface of the reflective diamond pattern of the reflective surface, and then is emitted out of the light guide plate through the light outlet surface.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, and in particular to a 3D surface light source optical structure and a vehicle lamp using the same. Background Art

[0002] Compared with point light sources, surface light sources are soft, eye-friendly, and natural, and can improve the driver's comfort when used in the field of car lights. The application of surface light sources makes the lamps more diverse in shape. The OLED light sources generally used in traditional technologies have controllable area sizes, but the cost of OLED panels is relatively high, which is not conducive to the cost control of the entire lamp.

[0003] In this regard, announcement number CN218001387U discloses a surface light source lighting system, a car light and a vehicle, which are composed of multiple surface light source units arranged in an arrangement, and cooperate with a light guide plate, and are equipped with dual-core LED lamp beads or lamp bead assemblies to achieve complex dynamic lighting effects. In this process, the dual-core LED lamp beads or lamp bead assemblies are controlled to work through a circuit board.

[0004] For the surface light source lighting system in the above-mentioned public technology, it is found through actual use that since the light guide plate can only realize the transmission of light, although the dual-core LED lamp beads or lamp bead assemblies can be controlled to achieve a dynamic lighting effect, the lighting effect presented is difficult to meet the current 3D effect for the shape of car lights. Utility Model Content

[0005] The first purpose of the utility model is to provide a 3D surface light source optical structure to solve the technical problem of achieving a 3D lighting effect of a surface light source.

[0006] The second object of the utility model is to provide a vehicle lamp to solve the technical problem of achieving a 3D lighting effect of a surface light source.

[0007] The 3D surface light source optical structure of the utility model is realized as follows:

[0008] A 3D surface light source optical structure, comprising: a surface light source module and a light guide plate assembly connected to the surface light source module; wherein

[0009] The light guide plate assembly comprises a light guide bracket and at least one light guide plate arranged on the light guide bracket;

[0010] The light guide plate is made of a colorless and transparent material, and includes a light incident surface, a light reflecting surface and a light emitting surface; the light reflecting surface is provided with a reflective diamond pattern arranged in a three-dimensional manner; the reflective diamond pattern includes a plurality of evenly arranged reflective pyramid-shaped depressions and a reflective barrier wall formed between adjacent reflective pyramid-shaped depressions; and

[0011] The surface light source module includes a circuit board fixed on a light guide bracket and a light source unit arranged on the circuit board corresponding to the light incident surface of the light guide plate; the light emitted by the light source unit enters the light guide plate through the light incident surface, is reflected by the reflective diamond pattern surface of the reflective surface, and then exits the light guide plate from the light emitting surface.

[0012] In an optional implementation of the utility model, it is characterized in that the light-emitting surface is also provided with light-emitting diamond patterns arranged in a three-dimensional manner;

[0013] The light-emitting diamond pattern comprises a plurality of evenly arranged light-emitting pyramid-shaped recesses and light-emitting barrier walls formed between adjacent light-emitting pyramid-shaped recesses.

[0014] In an optional implementation of the present invention, the reflective pyramid-shaped recess and the light-emitting pyramid-shaped recess are both triangular pyramid-shaped structures.

[0015] In an optional implementation of the utility model, the light guide plate assembly includes a light guide bracket and three light guide plates arranged on the light guide bracket at intervals;

[0016] The circuit board is provided with three light source units that match the three light guide plates one-to-one;

[0017] The three light guide plates are arranged in a staggered manner front to back along the light emitting direction.

[0018] In an optional implementation of the present invention, each of the light guide plates is made of light scattering material.

[0019] In an optional implementation of the present invention, the light guide bracket is made of black opaque material.

[0020] In an optional implementation of the present invention, the light guide bracket is formed with a hollow cavity for fixing the light guide bracket; and

[0021] The inner side wall of the cavity is provided with leather grain.

[0022] In an optional implementation of the utility model, the light guide plate is fixed to the circuit board by riveting, and the circuit board is fastened to the light guide bracket by screws; and

[0023] The side end surface of the light guide bracket facing the circuit board is provided with a slot suitable for inserting the light guide plate.

[0024] In an optional implementation of the present invention, each of the light source units includes an LED light source suitable for emitting two different colors.

[0025] The vehicle lamp of the utility model is realized as follows:

[0026] A vehicle lamp comprises: a housing, the 3D surface light source optical structure arranged in the housing, and a lampshade matched with the housing; wherein

[0027] The lampshade and the shell are combined to form a receiving cavity for receiving the 3D surface light source optical structure.

[0028] By adopting the above technical scheme, the utility model has the following beneficial effects: the 3D surface light source optical structure of the utility model and the car light using the same, through the reflective diamond pattern provided on the reflective surface of the light guide plate, the light emitted by the light source unit is reflected by the reflective diamond pattern to achieve a 3D three-dimensional lighting effect.

[0029] Furthermore, the present invention uses a light guide plate made of transparent material to replace the back plate generally used in the prior art, and through the superposition and coordination of multiple light guide plates, a crystal clear 3D lighting effect is achieved to meet the diversified and personalized needs of the headlight shape. Compared with the traditional surface light source system, the shape can be more complex and three-dimensional, and compared with the OLED light source, the production cost of the overall headlight can be effectively controlled.

[0030] In addition, the light-emitting surface of the light guide plate is provided with light-emitting diamond patterns, so that the light-emitting surface has uniform side surfaces in multiple directions in a three-dimensional space, presenting a sparkling effect like a diamond, with better light-emitting effect and more beautiful appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of the light guide plate of the 3D surface light source optical structure of the utility model;

[0032] Figure 2 It is a partial structural schematic diagram of the reflective diamond pattern of the light guide plate of the 3D surface light source optical structure of the utility model;

[0033] Figure 3 It is a structural schematic diagram of the reflective pyramid-shaped depressions and reflective baffle walls of the reflective diamond pattern of the light guide plate of the 3D surface light source optical structure of the utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the vehicle lamp of the utility model from a first perspective;

[0035] Figure 5 It is a second viewing angle structural schematic diagram of the vehicle lamp of the utility model.

[0036] In the figure: lampshade 1, housing 2, light guide plate assembly 3, first light guide plate 31, second light guide plate 32, third light guide plate 33, light incident surface 312, microstructure pattern 311, light emitting surface 313, circuit board 4, LED light source 41, light guide bracket 34. DETAILED DESCRIPTION

[0037] 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.

[0038] Embodiment 1:

[0039] See also Figures 1 to 5 As shown, this embodiment provides a 3D surface light source optical structure, including: a surface light source module and a light guide plate assembly 3 connected to the surface light source module; wherein the light guide plate assembly 3 includes a light guide bracket 34 and at least one light guide plate arranged on the light guide bracket 34; the corresponding surface light source module includes a circuit board 4 fixed on the light guide bracket 34 and at least one light source unit arranged on the circuit board 4 corresponding to the at least one light guide plate.

[0040] In this regard, this embodiment takes the case of using three light guide plates and three light source units as an example in conjunction with the accompanying drawings. Next, this embodiment describes each component in detail:

[0041] First, each light guide plate is made of a colorless and transparent material. Optionally, each of the light guide plates is made of a light scattering material such as light scattering polycarbonate (PC) or light scattering polymethyl methacrylate (PMMA). The light emitted by the light source unit will be scattered in the light scattering material, and the scattered light can be evenly emitted from the surface of the light guide plate. Therefore, by using the light scattering material for light guiding, a three-dimensional effect similar to OLED self-luminescence can be achieved.

[0042] Each light guide plate includes a light incident surface 312, a light reflecting surface and a light emitting surface 313; the light reflecting surface is provided with a reflective diamond pattern 311. Here, a sawtooth pattern can also be designed and processed on the light incident surface 312, and leather grains can be added to the pattern surface to make the LED light source 41 diffuse evenly and reduce the granularity of the light. Based on this structure, after the light emitted by the light source unit enters the light guide plate through the light incident surface 312, it is reflected by the surface of the reflective diamond pattern 311 on the reflective surface, and then exits the light guide plate from the light emitting surface 313.

[0043] Regarding the reflective diamond pattern 311 here: in a first optional implementation case, it specifically adopts the following form, the reflective diamond pattern 311 includes a plurality of evenly arranged reflective pyramidal recesses 3111 and a reflective barrier wall 3112 formed between adjacent reflective pyramidal recesses 3111. Taking the accompanying drawings as an example, the reflective pyramidal recesses 3111 are triangular pyramidal structures.

[0044] Based on the above situation, the present embodiment can also be designed in a modified manner as follows, that is, a light-emitting diamond pattern arranged in a three-dimensional manner is also provided on the light-emitting surface 313; for example, in conjunction with the accompanying drawings, the light-emitting diamond pattern includes a plurality of evenly arranged light-emitting pyramidal depressions and a light-emitting barrier wall 3112 formed between adjacent light-emitting pyramidal depressions, and for example, in conjunction with the accompanying drawings, the reflective pyramidal depression 3111 and the light-emitting pyramidal depression 3111 are both triangular pyramidal structures. That is, the texture structure of the overall light-emitting diamond pattern and the reflective diamond pattern 311 can be completely the same, so that when the light guide plate is actually produced, the reflective diamond pattern 311 and the light-emitting diamond pattern can be formed using the same mold.

[0045] Furthermore, for the three light guide plates, the three light guide plates are arranged in a staggered manner in the front and back direction along the light emitting direction. In terms of shape, in an optional implementation, the shapes of the first light guide plate 31, the second light guide plate 32 and the third light guide plate 33 are all triangular, and the triangles of the three light guide plates form similar triangles. The light guide plate in this shape cooperates with the reflective diamond pattern 311 and the light emitting diamond pattern so that the overall light guide plate presents a stronger three-dimensional light effect during the light guiding process.

[0046] In addition, for the size of the three light guide plates, the height of the three light guide plates in the dimension perpendicular to the light emitting direction can be selected to be the same for all three light guide plates, or the height of the three light guide plates in the dimension perpendicular to the light emitting direction can be a structure in which the height of the three light guide plates in the dimension perpendicular to the light emitting direction is gradually increased. Specifically, when the 3D surface light source optical structure of this embodiment is applied to a car lamp, the light guide plate closer to the light emitting surface of the car lamp (generally the lampshade 1) has a larger height, and the light guide plate farther away from the light emitting surface of the car lamp has a smaller height. Under such a design, the reflective diamond pattern and the light emitting diamond pattern of the three light guide plates can present a 3D shaped luminous effect. In more detail, in conjunction with the accompanying drawings, the three light guide plates are exemplified as the first light guide plate 31, the second light guide plate 32 and the third light guide plate 33, wherein the first light guide plate 31 is closest to the light emitting surface of the car lamp. In this regard, the height of the first light guide plate 31 in the dimension perpendicular to the light emitting direction is greater than that of the second light guide plate 32, and the height of the second light guide plate 32 in the dimension perpendicular to the light emitting direction is greater than that of the third light guide plate 33.

[0047] On the basis of the above structure, further speaking, regarding the position layout between the first light guide plate 31, the second light guide plate 32 and the third light guide plate 33, the three light guide plates are arranged in a staggered manner front to back, that is, the light emitted by the three light guide plates has partial cross-overlapping and partial non-overlapping areas. With such a design, a depth of field effect is formed when the three light guide plates are lit, thereby enhancing the three-dimensional effect of the light.

[0048] Next, the light guide bracket 34 can be made of black opaque material. More specifically, the light guide bracket 34 is formed with a hollow cavity for fixing the light guide bracket 34, and the inner wall of the cavity is provided with leather grain, thereby reducing the influence of light reflection on the display effect.

[0049] Regarding the cooperation between the light guide plate, the light guide bracket 34 and the circuit board 4:

[0050] For example, to facilitate processing and assembly, the light guide plate is fixed to the circuit board 4 by riveting, and the circuit board 4 is fastened to the light guide bracket 34 by screws; and the side end surface of the light guide bracket 34 facing the circuit board 4 is provided with a slot suitable for inserting the light guide plate.

[0051] Finally, it is necessary to explain that in a specific optional implementation, each light source unit includes multiple LED light sources 41. For each light source unit, multiple LED light sources 41 can be lit simultaneously or sequentially, and sequential lighting can achieve a dynamic light effect. Among the multiple LED light sources 41 here, there is an LED light source 41 suitable for emitting two different colors. In this regard, the two different colors of LED light sources 41 on each light source unit are distributed in a sequentially spaced structure. The light emitted by the two different colors of LED light sources 41 here can be yellow light and red light. When it is specifically used in a car lamp, lighting the LED light source 41 that emits red light can realize the position light function, and lighting the LED light source 41 that emits yellow light can realize the turn signal function.

[0052] Embodiment 2:

[0053] See also Figures 1 to 5 As shown, based on the 3D surface light source optical structure of Example 1, this embodiment provides a vehicle lamp, comprising: a shell 2, the 3D surface light source optical structure of Example 1 arranged in the shell 2, and a lampshade 1 matched with the shell 2; wherein the lampshade 1 and the shell 2 are enclosed to form a accommodating cavity for accommodating the 3D surface light source optical structure.

[0054] The light incident surfaces 312 of the first light guide plate 31, the second light guide plate 32 and the third light guide plate 33 are all facing the lampshade 1. In this structure, when the LED light source 41 is turned on, light enters from the light incident surface 312 of the light guide plate, is reflected on the surface of the microstructure pattern 311, and is emitted from the light emitting surface 313 of the light guide plate, and finally passes through the lampshade 1 to emit the car light.

[0055] Specifically, the light guide bracket 34 can be fastened to the housing 2 by screws, and the lampshade 1 can be fixed to the housing 2 by welding. The light guide bracket 34 has an opening on one side facing the lampshade 1, and the edge of the opening extends all around and abuts against the housing 2.

[0056] In summary, for the headlight of this embodiment, the reflective diamond pattern 311 designed on the light guide plate allows the light emitted by the light source unit to be reflected by the reflective diamond pattern 311, thereby achieving a 3D lighting effect. In addition, this embodiment uses a light guide plate made of a transparent material to replace the back plate generally used in the prior art, and through the superposition and coordination of multiple light guide plates, a crystal clear 3D lighting effect is achieved, meeting the diversified and personalized needs for the shape of the headlight.

[0057] 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 protection scope of the present invention.

[0058] In the description of the present invention, it is necessary to understand that the terms indicating 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 a limitation on the present invention.

[0059] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0060] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply 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 a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0061] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0062] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the 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. The 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 3D surface light source optical structure, It is characterized in that include: A surface light source module and a light guide plate assembly connected to the surface light source module; in The light guide plate assembly comprises a light guide bracket and at least one light guide plate arranged on the light guide bracket; The light guide plate is made of a colorless and transparent material, and includes a light incident surface, a light reflecting surface and a light emitting surface; the light reflecting surface is provided with a reflective diamond pattern arranged in a three-dimensional manner; the reflective diamond pattern includes a plurality of evenly arranged reflective pyramid-shaped depressions and a reflective barrier wall formed between adjacent reflective pyramid-shaped depressions; and The surface light source module includes a circuit board fixed on a light guide bracket and a light source unit arranged on the circuit board corresponding to the light incident surface of the light guide plate; the light emitted by the light source unit enters the light guide plate through the light incident surface, is reflected by the reflective diamond pattern surface of the reflective surface, and then exits the light guide plate from the light emitting surface.

2. The 3D surface light source optical structure according to claim 1, It is characterized in that The light emitting surface is also provided with light emitting diamond patterns arranged in a three-dimensional manner; The light-emitting diamond pattern comprises a plurality of evenly arranged light-emitting pyramid-shaped recesses and light-emitting barrier walls formed between adjacent light-emitting pyramid-shaped recesses.

3. The 3D surface light source optical structure according to claim 2, It is characterized in that The light-reflecting pyramid-shaped recess and the light-emitting pyramid-shaped recess are both triangular pyramid-shaped structures.

4. The 3D surface light source optical structure according to any one of claims 1 to 3, It is characterized in that The light guide plate assembly comprises a light guide bracket and three light guide plates arranged on the light guide bracket at intervals; The circuit board is provided with three light source units that match the three light guide plates one-to-one; The three light guide plates are arranged in a staggered manner front to back along the light emitting direction.

5. The 3D surface light source optical structure according to any one of claims 1 to 3, It is characterized in that Each of the light guide plates is made of light scattering material.

6. The 3D surface light source optical structure according to any one of claims 1 to 3, It is characterized in that The light guide bracket is made of black opaque material.

7. The 3D surface light source optical structure according to claim 6, It is characterized in that The light guide support is formed with a hollow cavity for fixing the light guide support; and The inner side wall of the cavity is provided with leather grain.

8. The 3D surface light source optical structure according to claim 7, It is characterized in that The light guide plate is fixed on the circuit board by riveting, and the circuit board is fastened to the light guide bracket by screws; and The side end surface of the light guide bracket facing the circuit board is provided with a slot suitable for inserting the light guide plate.

9. The 3D surface light source optical structure according to any one of claims 1 to 3, It is characterized in that Each of the light source units includes an LED light source suitable for emitting two different colors.

10. A car light, It is characterized in that include: A housing, a 3D surface light source optical structure as claimed in any one of claims 1 to 9 arranged in the housing, and a lampshade matched with the housing; in The lampshade and the shell are combined to form a receiving cavity for receiving the 3D surface light source optical structure.

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