Novel area light source lightening assembly
By designing separated light-guided mixed light and light-guided light-emitting areas in the surface light source product, and using light-guided teeth to achieve uniform distribution of light, the high cost and high power consumption problems caused by multiple LED light sources in the prior art are solved, and the effect of a single light source lighting the entire light-emitting surface is achieved.
Patent Information
- Application Number
- CN202421390413.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-06-18
AI Technical Summary
Existing surface light source products require multiple LED light sources to achieve uniform illumination effect, resulting in high raw material costs and high power consumption.
A new surface light source lighting assembly is designed, by setting a separated light-guiding mixed light area and a light-guiding light emitting area, the first light-guiding teeth and the second light-guiding teeth are used to achieve uniform distribution and reflection of light, and only one light source is needed to light up the entire light-emitting surface.
It effectively reduces the number of light sources and the area of PCBA, significantly reduces product costs, and achieves a uniform lighting effect of the light-emitting surface.
Smart Images

Figure CN222616623U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of light guides, in particular to a novel surface light source lighting component. Background Art
[0002] For current surface light source products, such as Figure 1 As shown, a plurality of LED light sources 91 are usually arranged in an array on one side of the third light guide plate 9, and then the entire light-emitting surface 93 is illuminated by the light guide teeth 92 on the third light guide plate 9, so as to achieve a uniform lighting effect on the entire light-emitting surface 93. The technical solution of the surface light source requires the arrangement of multiple LED light sources to achieve a uniform illumination effect, and the raw material cost is relatively high, and the power consumption is also relatively high.
[0003] Therefore, in view of the above-mentioned technical problems, it is necessary to provide a new technical solution. Utility Model Content
[0004] In order to solve at least one of the technical problems existing in the prior art, the utility model can provide a new type of surface light source lighting component that can light up the entire light emitting surface by arranging only one light source, effectively reducing the number of light sources, and not increasing the number of parts, which is conducive to reducing costs. The specific technical solution is as follows:
[0005] On the one hand, the utility model provides a novel surface light source lighting component, which includes a light-guiding and light-mixing area and a light-guiding and light-emitting area, and a gap is provided between the light-guiding and light-mixing area and the light-guiding and light-emitting area;
[0006] The side of the light-guiding and light-mixing area away from the light-guiding and light-emitting area is a second light-mixing surface, and the first light-guiding teeth are arranged on the second light-mixing surface;
[0007] The light-guiding and luminous area includes a first light-emitting surface, a second light-emitting surface and a light-emitting surface. The first light-emitting surface is arranged on the side of the light-guiding and luminous area close to the light-guiding and mixing area. The light-emitting surface and the second light-emitting surface are both arranged adjacent to the first light-emitting surface. The second light-emitting surface and the light-emitting surface are arranged opposite to each other. A second light-guiding tooth is arranged on the second light-emitting surface.
[0008] As a preferred solution of the utility model, the side of the light-guiding and light-mixing area close to the light-guiding and light-emitting area is a first light-mixing surface, and the first light-mixing surface is arranged parallel to the first light-emitting surface.
[0009] As a preferred solution of the utility model, the light guiding mixing area and the light guiding luminous area are connected as one body, and both the light guiding mixing area and the light guiding luminous area are located on the first light guiding member, and a groove is provided on the first light guiding member, which separates the first light guiding member into the light guiding mixing area and the light guiding luminous area.
[0010] As a preferred solution of the utility model, the width of the groove along the radial direction is the gap between the light guiding and light mixing area and the light guiding and light emitting area.
[0011] As a preferred solution of the utility model, the light guiding mixing area and the light guiding luminous area are separately connected, the light guiding mixing area is located on the first light guiding member, the light guiding luminous area is located on the second light guiding member, and a gap is set between the first light guiding member and the second light guiding member.
[0012] As a preferred solution of the utility model, there are a plurality of first light guide teeth, and the plurality of first light guide teeth are evenly arranged at equal intervals or arranged in an array on the second light mixing surface.
[0013] As a preferred solution of the utility model, there are a plurality of second light guide teeth, and the plurality of second light guide teeth are evenly arranged at equal intervals or arranged in an array on the second light emitting surface.
[0014] As a preferred solution of the present invention, the first light-guiding tooth is a spherical light-guiding tooth or an elongated light-guiding tooth.
[0015] As a preferred solution of the present invention, the second light-guiding tooth is a spherical light-guiding tooth or an elongated light-guiding tooth.
[0016] As a preferred solution of the present invention, when the first light-guiding teeth are elongated light-guiding teeth, the elongated light-guiding teeth include prismatic light-guiding teeth and arc-shaped light-guiding teeth.
[0017] As a preferred solution of the present invention, when the second light-guiding teeth are elongated light-guiding teeth, the elongated light-guiding teeth include prismatic light-guiding teeth and arc-shaped light-guiding teeth.
[0018] As a preferred solution of the present invention, when the first light-guide tooth is an elongated light-guide tooth, the axis direction of the first light-guide tooth is arranged perpendicular to the second light-emitting surface.
[0019] As a preferred solution of the present invention, when the second light-guiding tooth is an elongated light-guiding tooth, the axis direction of the second light-guiding tooth is arranged parallel to the second light-mixing surface.
[0020] As a preferred solution of the utility model, it also includes a light source; the light source is arranged on the side of the light guiding and mixing area adjacent to the second light mixing surface.
[0021] Compared with the prior art, the technical solution described in the utility model has at least one or more of the following beneficial effects:
[0022] The utility model is specially designed to set up a separate light-guiding mixing area and a light-guiding luminous area, so that the number of light sources is effectively reduced, and the area of PCBA is also reduced, which greatly reduces the product cost. In the technical solution of the utility model, the light of the light source is irradiated to the light-guiding mixing area, and the light is evenly distributed in the light-guiding mixing area through reflection of the first light-guiding tooth, and then the evenly distributed light is irradiated to the light-guiding luminous area, and then the second light-guiding tooth on the light-guiding luminous area is irradiated to the light-emitting surface that needs to be illuminated, so as to achieve the effect of evenly lighting the light-emitting surface.
[0023] A gap is set to effectively separate the light-guiding and light-mixing area from the light-guiding and light-emitting area, ensuring that the light in the light-guiding and light-mixing area can be continuously reflected in the area, and finally evenly distributed through the first light-guiding tooth. Alternatively, a groove is set to effectively separate the light-guiding and light-mixing area from the light-guiding and light-emitting area through the gap of the groove, ensuring that the light in the light-guiding and light-mixing area can be continuously reflected in the area, and evenly distributed.
[0024] The first light mixing surface is arranged parallel to the first light emitting surface. When the light from the light guiding mixing area is irradiated to the light guiding light emitting area, since the two surfaces are distributed in parallel, the irradiation direction of the light will not be changed, so that the light can be irradiated to the light guiding light emitting area, thereby achieving the effect of a single light source illuminating the entire light emitting surface.
[0025] By setting the light guide and mixing area, the RGB colors (i.e. red, green and blue) in the light source can be fully mixed, avoiding the dispersion phenomenon that occurs in conventional light guide plates.
[0026] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of a surface light source product in the prior art;
[0029] Figure 2 It is a three-dimensional structural schematic diagram of an embodiment of the surface light source assembly of the utility model;
[0030] Figure 3 It is a three-dimensional structural schematic diagram of another embodiment of the surface light source assembly of the utility model;
[0031] Figure 4 It is a three-dimensional structural schematic diagram of another embodiment of the surface light source assembly of the utility model;
[0032] Figure 5 It is a three-dimensional structural schematic diagram of another embodiment of the surface light source assembly of the utility model;
[0033] Figure 6 It is a three-dimensional structural schematic diagram of another embodiment of the surface light source assembly of the utility model.
[0034] Among them, 1-light guiding and mixing area, 2-light guiding and luminous area, 3-first light guiding member, 4-second light guiding member, 5-light source, 11-first light guiding tooth, 12-first light mixing surface, 13-second light mixing surface, 21-first luminous surface, 22-second luminous surface, 23-light emitting surface, 24-second light guiding tooth, 31-groove, 32-gap, 9-third light guiding plate, 91-LED light source, 92-light guiding tooth, 93-luminous surface. DETAILED DESCRIPTION
[0035] The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the utility model, and should not be construed as limitations on the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model.
[0036] In the description of the present utility model, it is necessary to understand that the terms "upper", "lower", "top", "bottom", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 utility model. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
[0037] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "provided with", "equipped with", "connected", "installed with", "set", "opened", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected 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 utility model can be understood according to specific circumstances.
[0038] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention.
[0039] Please refer to Figure 2-6 ,like Figure 2-6 As shown, the utility model provides a novel surface light source lighting component, comprising a light guide and light mixing area 1 and a light guide and light emitting area 2, and a gap 32 is provided between the light guide and light mixing area and the light guide and light emitting area;
[0040] A first light guide tooth 11 is provided on the side of the light guide and light mixing area 1 away from the light guide and light emitting area 2;
[0041] The light-guiding and luminous area 2 includes a first light-emitting surface 21, a second light-emitting surface 22 and a light-emitting surface 23. The first light-emitting surface 21 is arranged on the side of the light-guiding and luminous area 2 close to the light-guiding and mixing area 1. The light-emitting surface 23 and the second light-emitting surface 22 are both arranged adjacent to the first light-emitting surface 21. The second light-emitting surface 22 and the light-emitting surface 23 are arranged opposite to each other. A second light-guiding tooth 24 is arranged on the second light-emitting surface 22.
[0042] The utility model is specially designed to set up a separate light-guiding mixing area and a light-guiding luminous area, so that the number of light sources is effectively reduced, and the area of PCBA is also reduced, which greatly reduces the product cost. In the technical solution of the utility model, the light of the light source is irradiated to the light-guiding mixing area, and the light is evenly distributed in the light-guiding mixing area through reflection of the first light-guiding tooth, and then the evenly distributed light is irradiated to the light-guiding luminous area, and then the second light-guiding tooth on the light-guiding luminous area is irradiated to the light-emitting surface that needs to be illuminated, so as to achieve the effect of evenly lighting the light-emitting surface.
[0043] A gap is provided to effectively isolate the light-guiding and light-mixing area from the light-guiding and light-emitting area, thereby ensuring that the light in the light-guiding and light-mixing area can be continuously reflected in the area and finally evenly distributed through the first light-guiding teeth.
[0044] By setting the light guide and mixing area, the RGB colors in the light source, namely red, green and blue, can be fully mixed, avoiding the dispersion phenomenon that occurs in conventional light guide plates.
[0045] Preferably, the light guiding and mixing area 1 further comprises a second light mixing surface 13, and the first light guiding teeth 11 are located on the second light mixing surface 13. In the example, the first light mixing surface 12 and the second light mixing surface 13 are arranged on two sides of the light guiding and mixing area 1 opposite to each other.
[0046] In a preferred example, the side of the light-guiding and light-mixing area 1 close to the light-guiding and light-emitting area 2 is the first light-mixing surface 12, and the first light-mixing surface 12 is arranged parallel to the first light-emitting surface 21. In the example, the first light-mixing surface 12 and the second light-mixing surface 13 are arranged oppositely on both sides of the light-guiding and light-mixing area 1. Further preferably, the first light-mixing surface 12 and the second light-mixing surface 13 are arranged parallel to each other. Further preferably, the first light-emitting surface 21 and the second light-emitting surface 22 are arranged perpendicularly.
[0047] The first light mixing surface is arranged parallel to the first light emitting surface. When the light from the light guiding mixing area is irradiated to the light guiding light emitting area, since the two surfaces are distributed in parallel, the irradiation direction of the light will not be changed, so that the light can be irradiated to the light guiding light emitting area, thereby achieving the effect of a single light source illuminating the entire light emitting surface.
[0048] Preferably, there are a plurality of first light guide teeth 11, and the plurality of first light guide teeth 11 are evenly arranged at equal intervals or arranged in an array on the second light mixing surface 13. Further preferably, as Figure 2 , Figure 4 and Figure 6 As shown, a plurality of first light guide teeth 11 are evenly arranged at equal intervals on the second light mixing surface 13. Further preferably, as Figure 3 and Figure 5 As shown, a plurality of first light guide teeth 11 are arranged in an array on the second light mixing surface 13 .
[0049] Preferably, the convex surface of the first light guide tooth 11 faces the inside of the light guiding and mixing area 1 .
[0050] Preferably, the first light-guiding tooth 11 is a spherical light-guiding tooth, an elongated light-guiding tooth or a light-guiding tooth of other shapes. Further preferably, the surface of the first light-guiding tooth 11 is a non-smooth surface. In the example, the surface of the first light-guiding tooth 11 is provided with a pattern. Further preferably, the elongated light-guiding teeth include but are not limited to prismatic light-guiding teeth, arc-shaped light-guiding teeth or light-guiding teeth of other shapes, etc. In the example, the length direction of the elongated light-guiding teeth is perpendicular to the second light-emitting surface 22. In the example, the length of the elongated light-guiding teeth is consistent with the height of the light-guiding mixing area 1. In the example, as Figure 3 and Figure 5 As shown, the first light guide tooth 11 is a spherical light guide tooth, and a plurality of spherical light guide teeth are arranged in an array with equal spacing on the second light mixing surface 13. Figure 2 , Figure 4 and Figure 6 As shown, the first light guide teeth 11 are prismatic light guide teeth, and a plurality of prismatic light guide teeth are evenly arranged at equal intervals on the second light mixing surface 13 , and the length of the prismatic light guide teeth is substantially consistent with the height of the light guide mixing area 1 .
[0051] Preferably, there are a plurality of second light guide teeth 24, and the plurality of second light guide teeth 24 are evenly arranged at equal intervals or arranged in an array on the second light emitting surface 22. Further preferably, as Figure 4 and Figure 5 As shown, a plurality of second light guide teeth 24 are evenly arranged at equal intervals on the second light emitting surface 22. Further preferably, as Figure 2-3 and Figure 6 As shown, a plurality of second light guide teeth 24 are arranged in an array on the second light emitting surface 22 .
[0052] Preferably, the convex surface of the second light guide tooth 24 faces the inside of the light guiding and luminous area 2 .
[0053] Preferably, the second light-guiding tooth 24 is a spherical light-guiding tooth, an elongated light-guiding tooth or a light-guiding tooth of other shapes. Further preferably, the surface of the second light-guiding tooth 24 is a non-smooth surface. In the example, the surface of the second light-guiding tooth 24 is provided with a pattern. Further preferably, the elongated light-guiding tooth includes but is not limited to a prismatic pattern, an arc pattern or other forms of patterns, etc. In the example, the elongated light-guiding tooth is arranged parallel to the second light-emitting surface 22. In the example, the length of the elongated light-guiding tooth is consistent with the length of the gap or the groove. In the example, as Figure 2-3 and Figure 6 As shown, the second light guide teeth 24 are spherical light guide teeth, and a plurality of spherical light guide teeth are arranged in an array with equal spacing on the second light emitting surface 22. Figure 4 and Figure 5 As shown, the second light-guiding tooth 24 is a prismatic light-guiding tooth, and a plurality of prismatic light-guiding teeth are evenly and evenly arranged on the second light-emitting surface 22 at equal intervals. The length of the prismatic light-guiding tooth is substantially consistent with the length of the gap or the groove. The axial direction of the second light-guiding tooth 24 is arranged parallel to the second light-mixing surface 13, and the axial direction of the second light-guiding tooth 24 is the length direction of the prismatic light-guiding tooth.
[0054] In a preferred embodiment, Figure 3-5 As shown, the light-guiding mixing area 1 and the light-guiding luminous area 2 are connected as one body, and both the light-guiding mixing area 1 and the light-guiding luminous area 2 are located on the first light guide 3. The first light guide 3 is provided with a groove 31, and the groove 31 separates the first light guide 3 into the light-guiding mixing area 1 and the light-guiding luminous area 2. The integrated design allows for more convenient installation, and because the light-guiding mixing area 1 and the light-guiding luminous area 2 can be more accurately aligned, a more uniform lighting effect can be achieved. In the example, the side wall of the groove 31 close to the light-guiding mixing area 1 is the first light-guiding mixing surface 12, and the side wall of the groove 31 close to the light-guiding luminous area 2 is the first luminous surface 21.
[0055] Preferably, one end of the first light guide tooth 11 close to the bottom of the groove 31 is not lower than the bottom of the groove 31 .
[0056] In the example, the width of the groove 31 along the radial direction is the gap between the light guiding and light mixing area 1 and the light guiding and light emitting area 2 .
[0057] A groove is provided to form a gap between the light-guiding mixing area and the light-guiding luminous area, thereby effectively isolating the light-guiding mixing area from the light-guiding luminous area, ensuring that the light in the light-guiding mixing area can be continuously reflected in the area and finally evenly distributed through the first light-guiding tooth.
[0058] In the example, the first light guide member 3 is a light guide plate.
[0059] In a less preferred embodiment, if Figure 6 As shown, the light guiding and mixing area 1 and the light guiding and luminous area 2 are separately connected, the light guiding and mixing area 1 is located on the first light guiding member 3, the light guiding and luminous area 2 is located on the second light guiding member 4, and a gap 32 is set between the first light guiding member 3 and the second light guiding member 4.
[0060] In the example, the first light guide member 3 and the second light guide member 4 are both light guide plates.
[0061] In a preferred embodiment, Figure 2 and Figure 6 As shown, a light source 5 is also included; the light source 5 is arranged on the side of the light guiding and mixing area 1 adjacent to the second light mixing surface 13 .
[0062] Preferably, the light source 5 can be arranged on both side surfaces of the light guide and light mixing area 1 adjacent to the second light mixing surface 13, or can be arranged on one side surface of the light guide and light mixing area 1 adjacent to the second light mixing surface 13. In the example, the light source 5 is arranged on one side surface of the light guide and light mixing area 1 adjacent to the second light mixing surface 13. In the example, the light source 5 is an LED lamp. Of course, the present patent is not limited to this, as long as the actual light emitting conditions can be met.
[0063] It should be noted that, in the absence of conflict, the above embodiments or all features in the embodiments described herein may be arbitrarily combined.
[0064] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "yet another embodiment", "another embodiment", "other embodiments", "example", "specific example" or "some examples" 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 representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.
[0065] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify and vary the above embodiments within the scope of the present invention.
Claims
1. A new type of surface light source lighting component, characterized in that: It comprises a light-guiding and light-mixing area (1) and a light-guiding and light-emitting area (2), and a gap (32) is provided between the light-guiding and light-mixing area and the light-guiding and light-emitting area; The side of the light-guiding and light-mixing area (1) away from the light-guiding and light-emitting area (2) is a second light-mixing surface (13), and the second light-mixing surface (13) is provided with a first light-guiding tooth (11); The light-guiding and luminous area (2) comprises a first light-emitting surface (21), a second light-emitting surface (22) and a light-emitting surface (23); the first light-emitting surface (21) is arranged on the side of the light-guiding and luminous area (2) close to the light-guiding and light-mixing area (1); the light-emitting surface (23) and the second light-emitting surface (22) are both arranged adjacent to the first light-emitting surface (21); the second light-emitting surface (22) and the light-emitting surface (23) are arranged opposite to each other; and a second light-guiding tooth (24) is arranged on the second light-emitting surface (22).
2. The novel surface light source lighting assembly according to claim 1 is characterized in that: The side surface of the light-guiding and light-mixing area (1) close to the light-guiding and light-emitting area (2) is a first light-mixing surface (12), and the first light-mixing surface (12) is arranged parallel to the first light-emitting surface (21).
3. The novel surface light source lighting assembly according to claim 1 is characterized in that: The light-guiding and light-mixing area (1) and the light-guiding and light-emitting area (2) are connected as one body; the light-guiding and light-mixing area (1) and the light-guiding and light-emitting area (2) are both located on a first light-guiding member (3); a groove (31) is provided on the first light-guiding member (3); the groove (31) separates the first light-guiding member (3) into the light-guiding and light-mixing area (1) and the light-guiding and light-emitting area (2).
4. The novel surface light source lighting assembly according to claim 3 is characterized in that: The width of the groove (31) along the radial direction is the gap (32) between the light-guiding and light-mixing area (1) and the light-guiding and light-emitting area (2).
5. The novel surface light source lighting assembly according to claim 1 is characterized in that: The light-guiding and light-mixing area (1) and the light-guiding and light-emitting area (2) are connected separately; the light-guiding and light-mixing area (1) is located on a first light-guiding member (3), the light-guiding and light-emitting area (2) is located on a second light-guiding member (4), and a gap (32) is provided between the first light-guiding member (3) and the second light-guiding member (4).
6. The novel surface light source lighting assembly according to claim 1, characterized in that: There are a plurality of first light guide teeth (11), and the plurality of first light guide teeth (11) are evenly arranged at equal intervals or arranged in an array on the second light mixing surface (13); and / or There are a plurality of second light guide teeth (24), and the plurality of second light guide teeth (24) are evenly arranged at equal intervals or arranged in an array on the second light emitting surface (22).
7. The novel surface light source lighting assembly according to claim 1 is characterized in that: The first light guide tooth (11) is a spherical light guide tooth or an elongated light guide tooth; and / or The second light guide tooth (24) is a spherical light guide tooth or an elongated light guide tooth.
8. The novel surface light source lighting assembly according to claim 7, characterized in that: When the first light-guiding tooth (11) is an elongated light-guiding tooth, the elongated light-guiding tooth includes a prismatic light-guiding tooth and an arcuate light-guiding tooth; and / or When the second light guide tooth (24) is an elongated light guide tooth, the elongated light guide tooth includes a prismatic light guide tooth and an arc-shaped light guide tooth.
9. The novel surface light source lighting assembly according to claim 1 or 7, characterized in that: When the first light guide tooth (11) is an elongated light guide tooth, the axial direction of the first light guide tooth (11) is arranged perpendicular to the second light emitting surface (22); and / or When the second light guide tooth (24) is an elongated light guide tooth, the axial direction of the second light guide tooth (24) is arranged parallel to the second light mixing surface (13).
10. The novel surface light source lighting assembly according to claim 1, characterized in that: Also includes a light source (5); The light source (5) is arranged on a side surface of the light-guiding and light-mixing area (1) adjacent to the second light-mixing surface (13).