Surface light-emitting module and vehicle lamp using same

Abstract

The utility model discloses a surface light-emitting module and a car lamp using the same. The surface light-emitting module comprises a black support, a light guide plate and a decorative ring which are sequentially arranged from back to front, and a light-emitting assembly arranged on the light inlet side of the light guide plate. The light guide plate comprises a light guide main body piece formed by double-shot molding and a light blocking part; wherein the light guide main body piece is injection-molded by adopting a transparent material, and the light blocking part is injection-molded by adopting a dark material; the light guide main body piece comprises a light incident part, a light reflecting part and a light emergent part; the light blocking part is located on the circumferential side end face, except the light inlet part, of the light guide body piece. Pyramid-shaped microstructures which are uniformly distributed are formed on the light emitting part; light emitted by the light-emitting assembly enters the light guide main body piece through the light inlet part, is transmitted in the light guide main body piece, is reflected by the light reflection part and is finally emitted out through the light emitting part.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of car light, especially to a surface light emitting module and car light using same. BACKGROUND

[0002] At present, in the field of car light, the surface light emitting effect is mainly realized through the following types: first, LED, light guide plate, light guide tooth and optical pattern; second, LED, light guide and thick wall part; third, LED, reflective film, light guide plate and diffusion film. Among them, for the first case, the general principle is to use the optical form of LED direct light guide plate, and the light guide plate surface optical microstructure is used to realize the effect of uniform light emission on the light guide plate surface.

[0003] For example, the LED light source surface light emitting module and the car light using the same disclosed in the announcement No. CN208635014U include: a back plate, a light guide plate and an optical film arranged in sequence from back to front; a plurality of concave / convex microstructures are arranged on the light guide plate. Although the surface light emitting module can realize uniform light emission through the microstructure, there are still bright lines, bright spots and other lighting defects at the edge of the light guide plate.

[0004] Based on the lighting defects such as bright lines and bright spots existing in the above-mentioned disclosed technology, the announcement No. CN213577305U discloses a car light multifunctional multipurpose light emitting device with microstructure pattern, which sets a light guide front lining plate on the front side of the light guide plate, which adopts an opaque material to block the light beam directly emitted by the LED light source, thereby avoiding the appearance of bright spots. In this regard, for the overall light emitting device, the light guide plate and the light guide front lining plate are two independent components, which not only increases the complexity of assembly, but also increases the material cost.

[0005] Therefore, from the perspective of simplifying the structure and reducing the production cost, it is still necessary to further improve the structure of the car light. UTILITY MODEL CONTENT

[0006] The first object of the utility model is to provide a surface light emitting module to solve the technical problem of simplifying the structure and reducing the production cost.

[0007] The second object of the utility model is to provide a car light to solve the technical problem of simplifying the structure and reducing the production cost.

[0008] The surface light emitting module of the utility model is realized as follows:

[0009] A surface light emitting module, comprising: a black support, a light guide plate and a decorative ring arranged in sequence from back to front, and a light emitting assembly arranged on the light incident side of the light guide plate.

[0010] The light guide plate comprises a light guide main body piece formed by double-color injection molding and a light blocking part; wherein the light guide main body piece is injection molded by transparent material, and the light blocking part is injection molded by dark color material; and

[0011] The light guide main body piece comprises a light inlet part, a light reflection part and a light outlet part; the light blocking part is located on the circumferential side end face of the light guide main body piece except the light inlet part;

[0012] The light outlet part is shaped with pyramid-shaped microstructures in uniform distribution;

[0013] The light emitted by the light emitting assembly enters the light guide main body piece through the light inlet part, propagates in the light guide main body piece, is reflected by the light reflection part and finally emitted by the light outlet part.

[0014] In an optional implementation of the utility model, the light inlet part is designed with at least one collimator.

[0015] In an optional implementation of the utility model, the light inlet part is shaped with optical pattern teeth.

[0016] In an optional implementation of the utility model, the decorative ring adopts a double-color decorative ring; the double-color decorative ring comprises a transparent part and a non-transparent part located on the circumferential side of the transparent part; wherein

[0017] The transparent part faces the light guide main body piece.

[0018] In an optional implementation of the utility model, the pyramid-shaped microstructures are formed by V-shaped groove arrays interlaced with each other.

[0019] In an optional implementation of the utility model, the included angle between the two sides of the V-shaped groove is 60°-100°.

[0020] The depth of the V-shaped groove is 50-100um, and the distance between two V-shaped grooves is 1-1.5 times the groove width.

[0021] In an optional implementation of the utility model, the included angle of the V-shaped groove arrays interlaced with each other is 60°-120°.

[0022] In an optional implementation of the utility model, the light reflection part is formed with a plurality of multi-faceted recessed structures recessed into the interior of the light guide main body piece;

[0023] The side of the multi-faceted recessed structure facing the light incidence direction is formed with a reflection surface, and the reflection surface is obliquely arranged and can reflect the incident light to the light outlet part.

[0024] In an optional implementation of the utility model, the plurality of surfaces of the multi-surface recessed structure are all arranged to be inclined into the recessed space of the multi-surface recessed structure.

[0025] The multi-surface recessed structure is a four-surface recessed structure or a six-surface recessed structure or an eight-surface recessed structure.

[0026] The utility model discloses a car lamp is realized as follows:

[0027] A car lamp comprises the surface light emitting module.

[0028] The utility model discloses a car lamp is realized as follows: BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is the whole structure schematic view of the surface light emitting module of example 1;

[0030] Figure 2 It is the schematic diagram of the light guide plate of the surface light emitting module of example 1;

[0031] Figure 3 It is the schematic diagram of the pyramid-shaped microstructure of the surface light emitting module of example 1;

[0032] Figure 4 It is the light path structure schematic diagram of the surface light emitting module of example 1;

[0033] Figure 5 It is the partial structure schematic diagram of the light reflection portion of the surface light emitting module of example 1.

[0034] In the drawing: black support 1, circuit board 21, LED 22, light guide main part 31, light blocking portion 32, light inlet portion 311, light reflection portion 312, light outlet portion 313, pyramid-shaped microstructure 4, V-shaped groove 41, multi-surface recessed structure 5, transparent portion 61, non-transparent portion 62. DETAILED DESCRIPTION

[0035] In order to make the content of the utility model more easily be clearly understood, the utility model is further explained in detail below according to specific embodiment and in conjunction with the drawings.

[0036] Embodiment 1:

[0037] Please refer to Figures 1 to 4 As shown in the figure, the embodiment provides a surface light emitting module, which comprises, from back to front, a black support 1, a light guide plate, a decorative ring, and a light emitting assembly arranged at the light entering side of the light guide plate.

[0038] The light emitting assembly here can be a combination of a circuit board 21 and an LED 22, and the number and distribution of the LED 22 can be determined according to the structure of the light entering side of the light guide plate or the lighting effect requirement, which is not absolutely limited in the embodiment. The black support 1, the light guide plate, and the decorative ring can be connected by, for example but not limited to, buckling.

[0039] Specifically, first, the light guide plate comprises a light guide main part 31 formed by double-color injection molding and a light blocking part 32; wherein the light guide main part 31 is injection molded by transparent material, and the light blocking part 32 is injection molded by dark color material. Here, for the dark color material used to make the light blocking part 32, the text emphasizes the use of dark color mainly to emphasize the use of color with strong light absorption ability, such as black, dark blue, brown, dark green, and dark gray, for example, black material can be used, so that the light blocking part 32 can effectively absorb the light at the end of the light guide plate away from the light emitting assembly, and the light emitting assembly directly forms a bright spot at the end of the light guide plate away from the light emitting assembly, so that the light will not propagate in other directions, thus avoiding the generation of bright spots and other defects such as end bright line bright spots.

[0040] Furthermore, the embodiment adopts a light guide main part 31 comprising a light entering part 311, a light reflecting part 312, and a light exiting part 313; the light blocking part 32 is located at the circumferential side end face of the light guide main part 31 except the light entering part 311, that is, for a flat light guide plate, the light blocking part 32 can be understood as forming a cladding effect at the side end face in the thickness direction, and since the light emitting assembly is also opposite to one of the side end faces in the thickness direction of the light guide plate, the side end face of the light guide plate facing the light emitting assembly does not need to be cladded.

[0041] Based on the above, first, the light exiting part 313 is shaped with uniformly distributed pyramid-shaped microstructures 4. Under this structure, the light emitted by the light emitting assembly enters the light guide main part 31 through the light entering part 311, propagates in the light guide main part 31, is reflected by the light reflecting part 312, and finally exits by the light exiting part 313. For this, it should be noted that the decorative ring adopts a double-color decorative ring; the double-color decorative ring comprises a transparent part 61 and a non-transparent part 62 located at the circumferential side of the transparent part 61; wherein the transparent part 61 is opposite to the light guide main part 31.

[0042] Regarding the pyramid-shaped microstructure 4 used in this embodiment, as an example of a specific optional implementation, it is formed by an array of V-shaped grooves 41 interlaced with each other. The two sides of the V-shaped groove 41 form an angle of 60°-100°; the depth of the V-shaped groove 41 is 50-100 um; the distance between the two V-shaped grooves 41 is 1-1.5 times the groove width. The array of V-shaped grooves 41 interlaced with each other at an angle of 60°-120°.

[0043] Next, it is explained that in an optional way, the light inlet part 311 is designed with at least one collimator. In another optional way, the light inlet part 311 is formed with optical pattern teeth.

[0044] In summary, for the surface light emitting module of this embodiment, the light guide plate used includes a light guide main part 31 formed by double-color injection molding and a light blocking part 32; wherein the light guide main part 31 is injection molded with transparent material, and the light blocking part 32 is injection molded with dark material, which under this structure makes the light beam uniformly exit, effectively improves the lighting defects such as edge bright line and bright spot of the light guide plate, and the integrated injection molding structure can simplify the structure, reduce the assembly process and reduce the production cost. Furthermore, the light exit part 313 is formed with pyramid-shaped microstructures 4 uniformly distributed, which not only realizes uniform light emission, but also improves the static appearance effect of the product compared with other forms of surface light source.

[0045] Embodiment 2:

[0046] Please refer to Figure 5 On the basis of the surface light emitting module of embodiment 1, the surface light emitting module provided by this embodiment is formed with a plurality of multi-faceted recessed structures 5 recessed into the light guide main part 31 on the light reflection part 312; the side of the multi-faceted recessed structure 5 facing the light incidence direction is formed with a reflection surface, the reflection surface is obliquely arranged and can reflect the incident light to the light exit part 313, the light after total reflection exits uniformly and has good light exit effect. Preferably, the multi-faceted recessed structures 5 are arrayed on the light reflection part 312.

[0047] Furthermore, it needs to be explained that the plurality of facets of the multi-faceted recessed structure 5 in this embodiment are all arranged to be oblique to the recessed space of the multi-faceted recessed structure 5, which is beneficial for demolding in the production and processing process; and the multi-faceted recessed structure 5 is a four-faceted recessed structure or a six-faceted recessed structure or an eight-faceted recessed structure. It needs to be explained here that "in" refers to the direction of the multi-faceted recessed structure 5 towards the recessed space of the multi-faceted recessed structure 5, and vice versa. Oblique to the recessed space of the multi-faceted recessed structure 5 refers to oblique from the outside of the multi-faceted recessed structure 5 to the recessed space. By controlling the inclination angle of the reflection surface of the multi-faceted recessed structure 5, the light exit direction of the reflected light is controlled, the structure is simple, and the light exit effect is good.

[0048] Embodiment 3:

[0049] On the basis of the surface light emitting module of Embodiment 1 or Embodiment 2, the present embodiment provides a vehicle lamp comprising the surface light emitting module of Embodiment 1 or Embodiment 2.

[0050] The above specific embodiments further specifically describe the purpose, technical scheme and beneficial effects of the present application, and it should be understood that the above are only specific embodiments of the present application and are not intended to limit the present application, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0051] In the description of the present application, it should be understood that the terms 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 application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, structure and operation, and therefore cannot be understood as a limitation on the present application.

[0052] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0053] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, structure and operation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation, and cannot be understood as indicating or implying relative importance.

[0054] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the parts must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0055] In the utility model, unless another definite provision and limitation, first feature is on or under second feature can include that first and second features are in direct contact, also can include that first and second features are not in direct contact but are in contact through other features between them. Moreover, first feature is on, above and on top of second feature includes that first feature is directly above and obliquely above second feature, or only indicates that the horizontal height of first feature is higher than second feature. First feature is under, below and under second feature includes that first feature is directly below and obliquely below second feature, or only indicates that the horizontal height of first feature is less than second feature.

Claims

1. A surface light emitting module, characterized by, The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module.

2. The surface light emitting module according to claim 1, wherein The application relates to a face light-emitting module.

3. The surface light emitting module according to claim 1, wherein The application relates to a face light-emitting module.

4. The surface light emitting module according to claim 1, wherein The application relates to a face light-emitting module. The application relates to a face light-emitting module.

5. The surface light emitting module according to claim 1, wherein The application relates to a face light-emitting module.

6. The surface light emitting module according to claim 5, wherein The application relates to a face light-emitting module. The application relates to a face light-emitting module.

7. The surface light emitting module according to claim 5 or 6, wherein The application relates to a face light-emitting module.

8. The surface light emitting module according to claim 1, wherein The application relates to a face light-emitting module. The application relates to a face light-emitting module.

9. The surface light emitting module according to claim 8, wherein The application relates to a face light-emitting module. The application relates to a face light-emitting module.

10. A vehicle lamp characterized by comprising: The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. The application relates to a face light-emitting module. 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