Light source module and lighting device

Abstract

The application provides a light source module and a lighting device. The light source module comprises a light guide, the light guide comprising an incident surface, an emitting surface and a top surface, the top surface being arranged opposite to the emitting surface, the top surface comprising a first reflection area and a second reflection area, the second reflection area surrounding the first reflection area; a light source plate, light emitted by the light source plate being incident to the incident surface to form source light, the source light being reflected and / or refracted by the first reflection area and the second reflection area to form first light and second light respectively, the first light and the second light being emitted by the emitting surface, and on the emitting surface, an emission angle of the first light is smaller than an emission angle of the second light.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and more particularly to a light source module and a lighting device. Background Technology

[0002] In order to achieve soft and uniform emitted light in the light source module of the lighting device, a light guide plate can be used to guide the light. For example, some table lamps have a light guide plate in the lamp head to make the emitted light softer and more uniform.

[0003] However, the inventors of this application have discovered that, since the light emission angle of the light source module with the light guide plate is relatively small, if the area of ​​the irradiated surface needs to be large, the distance between the desk lamp and the irradiated surface often needs to be increased significantly. At this time, the illuminance of the central area of ​​the irradiated surface will decrease and cannot meet the requirements. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a light source module and an illumination device, thereby resolving the difficulty in balancing the large irradiated area and the high illuminance in the central region for light source modules using light guide plates.

[0005] The technical solution of the present invention provides a light source module, comprising:

[0006] A light guide includes an incident surface, an exiting surface, and a top surface, the top surface being disposed opposite to the exiting surface. The top surface includes a first reflective area and a second reflective area, the second reflective area surrounding the first reflective area. A light source plate emits light that is incident on the incident surface to form a source ray. The source ray is reflected and / or refracted by the first and second reflective areas to form a first ray and a second ray, respectively. Both the first ray and the second ray exit from the exiting surface, and on the exiting surface, the exit angle of the first ray is smaller than that of the second ray.

[0007] Optionally, on the light-emitting surface, the second ray is deflected in a direction away from the optical axis of the light source module.

[0008] Optionally, the light-emitting surface includes a central region and a peripheral region surrounding the central region;

[0009] A first microstructure is provided on the first reflective area, and the first microstructure is used to refract and / or reflect the first light ray to form the first light ray emitted from the central region;

[0010] A second microstructure is provided on the second reflective area, which is used to refract and / or reflect the second light rays to form the second light rays emitted from the peripheral area.

[0011] Optionally, the first microstructure and the second microstructure are integrally disposed on the light guide.

[0012] Optionally, the light guide is provided in separate parts, and the light guide includes a first light guide element and a second light guide element, with the first microstructure disposed on the first light guide element and the second microstructure disposed on the second light guide element.

[0013] Optionally, the first reflective area is circular, the second reflective area is annular, and the axes of the first reflective area and the second reflective area are collinear.

[0014] Optionally, the area ratio of the first reflective area to the second reflective area is between 1:9 and 9:1.

[0015] Optionally, the light-incident surface connects the top surface and the light-emitting surface, and the light source plate surrounds the light-incident surface and is disposed towards the light-incident surface.

[0016] Optionally, it may also include: a reflective element disposed on the surface of the light guide that is opposite to the light emitting surface.

[0017] Optionally, it also includes: a housing, in which the light source plate and the light guide are housed, the housing having a light outlet, and the light emitting surface facing the light outlet.

[0018] The present invention also provides a lighting device, including the light source module as described above.

[0019] In the light source module provided by the technical solution of the present invention, the emission angle of the first light beam is smaller than that of the second light beam. Without increasing the light-emitting surface of the light source module, the first light beam mainly illuminates the area directly below and around the light source module (near-end area), while the second light beam mainly illuminates the area below the light source module away from directly below (far-end area). The combination of the two results in a larger emission angle of the light source module. When the illuminated surface needs to have a large area, it is not necessary to significantly increase the distance between the light source module and the illuminated surface, thereby ensuring that the illuminance of the central area on the illuminated surface is not significantly reduced. Attached Figure Description

[0020] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of it, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0021] Figure 1 This is an exploded view of the light source module in an embodiment of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the central light guide component;

[0023] Figure 3 for Figure 2 A cross-sectional view of the light guide along the AA direction;

[0024] Figure 4 For the light source module in the embodiments of the present invention, from Figure 3 The optical path diagram of the light emitted from the light guide component;

[0025] Figure 5 for Figure 2 and Figure 3 A schematic diagram of light reflection by the second reflective area on the central light guide component;

[0026] Figure 6 for Figure 2 and Figure 3 A schematic diagram of light reflection by the first reflective area on the central light guide component;

[0027] Figure 7 Several implementations with different area ratios for the first and second reflective zones.

[0028] Figure label:

[0029] 100-Light Source Module;

[0030] 10-Light guide; 11-Incident surface; 12-Emitting surface; 13-Top surface; 131-First reflection area; 132-Second reflection area;

[0031] 20-Light source board;

[0032] 30 - Reflective element; Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only one part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0034] The lighting device provided in this embodiment of the invention includes a light source module 100. See also... Figure 1 , Figure 2 and Figure 3The light source module 100 includes a light guide 10 and a light source plate 20. The light guide 10 includes an incident surface 11, an emitting surface 12, and a top surface 13, with the top surface 13 facing away from the emitting surface 12. Light emitted from the light source plate 20 is incident on the incident surface 11, and after being reflected and refracted by at least one of the top surface 13, it is emitted from the emitting surface 12. A first reflection area 131 and a second reflection area 132 are provided on the top surface 13, and the second reflection area 132 can surround the first reflection area 131. Light emitted from the light source plate 20 is incident on the incident surface 11 to form a source ray. After being reflected or refracted by at least one of the first reflection area, the source ray forms a first ray. After being reflected or refracted by at least one of the second reflection area, the source ray forms a second ray. Both the first ray and the second ray are emitted from the emitting surface 12, and the emission angle of the first ray is smaller than that of the second ray on the emitting surface 12.

[0035] In this embodiment of the invention, the light emitted from the light source module 100 via the light guide 10 can meet the requirement of soft and uniform emitted light. Furthermore, the emission angle of the first light beam is smaller than that of the second light beam, see [reference needed]. Figure 4 In the diagram, the thicker lines in the middle (the five lines in the middle) are the first rays, while the thinner lines in the outer part (the two lines on the left and the two lines on the right) are the second rays.

[0036] It can be seen that the first ray is mainly projected onto the area of ​​the irradiated area that is close to the optical axis of the light source module 100, while the second ray is mainly projected onto the area of ​​the irradiated area that is far from the optical axis of the light source module 100.

[0037] In this embodiment of the invention, without increasing the light-emitting surface 12 of the light source module 100, the first light mainly illuminates the area directly below and around the light source module 100 (near-end region), and the second light mainly illuminates the area below the light source module 100 away from directly below (far-end region). The combination of these two elements results in a larger emission angle for the light source module 100. When a larger area of ​​the illuminated surface is required, the distance between the light source module 100 and the illuminated surface does not need to be significantly increased. This prevents a significant decrease in illuminance in the central area of ​​the illuminated surface, thus avoiding the situation where the illuminance in the central area of ​​the illuminated surface decreases significantly due to an increase in the distance between the light source module 100 and the illuminated surface. This solves the problem currently faced by light source modules 100 using light guide plates that struggle to balance a larger illuminated surface size with higher illuminance in the central area.

[0038] The exit angle refers to the angle between the emitted ray and the normal. On the light-emitting surface 12, the exit angle of the first ray is the angle between the emitted ray emitted from the light-emitting surface 12 and the normal of the light-emitting surface 12.

[0039] In one embodiment, the light guide 10 may be in the form of a light guide plate, or it may not be plate-shaped. The light guide 10 may be made of plexiglass, or any other material capable of guiding light, such as transparent polycarbonate.

[0040] In this embodiment of the invention, on the light-emitting surface 12, the second ray can deviate from the optical axis of the light source module 100, that is, deflect in a direction away from the first reflection area 131, such as... Figure 4 The thinner optical path shown, specifically the two leftmost and two rightmost rays, is squarely deflected away from the optical axis of the light source module 100. Therefore, after passing through the light-emitting surface 12, the second ray does not need to pass directly below the first reflective area 131 to directly illuminate the illuminated area. Consequently, when the distance between the light source module 100 and the illuminated surface is increased or decreased, the brightness of the light spot on the illuminated surface can change more smoothly, and the size of the light spot can also increase or decrease smoothly, resulting in a better user experience. Of course, in some embodiments, after passing through the light-emitting surface 12, the second ray can be deflected towards the optical axis of the light source module 100, meaning the second ray needs to pass directly below the first reflective area 131 before illuminating the illuminated area.

[0041] In this embodiment of the invention, outside the light-emitting surface 12, the first ray can be parallel to the optical axis of the light source module 100, that is, the emission angle of the first ray can be zero. Of course, the emission angle of the first ray can not be zero, but a small angle.

[0042] In this embodiment of the invention, the light-emitting surface 12 may include a central region and a peripheral region surrounding the central region.

[0043] In this embodiment of the invention, in order to make the emission angle of the first light ray different from that of the second light ray, a first microstructure may be provided on the first reflection region 131 for refracting or reflecting at least one of the first light ray to form the first light ray emitted from the central region of the light-emitting surface 12. A second microstructure may be provided on the second reflection region 132 for reflecting or refracting at least one of the second light ray to form the second light ray emitted from the outer periphery region.

[0044] The first and second microstructures can deflect the source light rays from the light source plate 20 in different directions, resulting in different projection ranges. For example, the first microstructure causes the source light rays from the light source plate 20 to be mainly deflected directly below and near the light-emitting surface 12, relatively close to the optical axis of the light source module 100 (the closer area of ​​the light source module 100). The second microstructure causes the source light rays from the light source plate 20 to be deflected away from directly below the light-emitting surface 12, relatively far from the optical axis of the light source module 100 (the farther area of ​​the light source module 100). This results in a more uniform distribution of light energy in the area directly below and further away from the light source module 100. For example, in... Figure 5 The emitted light from the light guide 10 under the first microstructure is shown. Figure 6 The emitted light from the light guide 10 under the second microstructure is shown.

[0045] In other words, the first light rays formed after refraction and / or reflection by the first microstructure are mainly used to illuminate the central area of ​​the irradiated area. Therefore, the illuminance of the central area of ​​the irradiated area is not easily reduced significantly due to the increase in the distance between the light source module 100 and the irradiated surface. The second light rays formed after refraction and / or reflection by the second microstructure are mainly used to illuminate the peripheral area of ​​the irradiated area. This can increase the emission angle of the light source module 100. Even if the distance between the light source module 100 and the irradiated area is small, a large light spot can still be formed on the irradiated surface, increasing the area of ​​the irradiated area.

[0046] In one embodiment, the first microstructure can be provided only on the first reflective region 131, while the second microstructure is not provided on the second reflective region 132. This also allows the emission angle of the first ray to differ from that of the second ray; for example, the emission angle of the first ray is smaller than that of the second ray. Conversely, the second microstructure can be provided only on the second reflective region 132, while the first microstructure is not provided on the first reflective region 131. This also allows the emission angle of the first ray to differ from that of the second ray; for example, the emission angle of the first ray is smaller than that of the second ray.

[0047] In one embodiment, the first microstructure may be a first inclined surface disposed on the first reflective area 131 at an angle relative to the light-emitting surface 12, and the degree of inclination of the first inclined surface relative to the light-emitting surface 12 affects the emission angle of the emitted light reflected by the first reflective area 131.

[0048] In one embodiment, the second microstructure may be a second inclined surface disposed on the second reflective region 132 at an angle relative to the light-emitting surface 12. The degree of inclination of the second inclined surface relative to the light-emitting surface 12 affects the emission angle of the emitted light reflected by the second reflective region 132.

[0049] The tilt of the first microstructure relative to the light-emitting surface 12 is different from the tilt of the second microstructure relative to the light-emitting surface 12. For example, the tilt of the first microstructure relative to the light-emitting surface 12 is less than the tilt of the second microstructure relative to the light-emitting surface 12, thereby making the emission angle of the emitted light reflected by the first microstructure less than the emission angle of the emitted light reflected by the second microstructure.

[0050] In another embodiment, the microstructure (including the first microstructure and the second microstructure) can be a dot on the light guide 10, which is formed directly on the top surface 13 during the light guide forming process. The processing method can be chemical etching, precision mechanical engraving, photolithography, or internal diffusion.

[0051] In this design, the dots in the first microstructure are designated as first dots, and the dots in the second microstructure are designated as second dots. The aspect ratios of the first and second dots are different; for example, the aspect ratio of the first dot is smaller than that of the second dot. This difference in aspect ratio results in the emission angle of the light rays reflected or refracted by the first microstructure being smaller than that of the light rays reflected or refracted by the second microstructure. Of course, in some embodiments, the aspect ratio of the first dot may be equal to or greater than that of the second dot.

[0052] In this context, the depth-to-diameter ratio refers to the ratio of the depth value to the radial value of each halftone dot. All first-order halftone dots may have different depth values; however, dots with larger depth values ​​also have larger radial values, resulting in all first-order halftone dots having the same depth-to-diameter ratio, or fluctuating within a certain range. Similarly, all second-order halftone dots may have different depth values; again, dots with larger depth values ​​also have larger radial values, resulting in all second-order halftone dots having the same depth-to-diameter ratio, or fluctuating within a certain range.

[0053] In this embodiment of the invention, the light guide 10 can be integrally formed. In other words, the first reflective area 131 and the second reflective area 132 are integrally formed on the light guide 10, that is, the first microstructure and the second microstructure are integrally formed on the light guide 10. Therefore, the light guide 10 is an independent component, which allows it to be easily assembled into the light source module 100. "Integrated" here can refer to integral molding during processing, meaning the light guide 10 can be integrally formed during the manufacturing process.

[0054] As a variation, the light guide 10 may not be integrally formed, but rather composed of separate components. The light guide 10 may include a first light guide element and a second light guide element, wherein the first reflective area 131 and its first microstructure are disposed on the first light guide element, and the second reflective area 132 and its second microstructure are disposed on the second light guide element. The first light guide element may include a first light-incident surface 11 and a first light-exiting surface 12, and the second light guide element may include a second light-incident surface 11 and a second light-exiting surface 12. The first and second light-exiting surfaces 12 may be flush along the radial plane or not. When the light guide 10 is composed of separate components, the second light guide element surrounds the first light guide element, and a gap may or may not exist between the first and second light guide elements. If a gap is included, a light source plate 20 may be disposed between the first and second light guide elements to direct light onto the first light guide element. In one embodiment, the type of reflective area included on the top surface 13 of the light guide 10 is equal to the number of light guide elements in the light guide 10, that is, each light guide element is provided with a corresponding reflective area.

[0055] The first reflective area 131 can be circular, and the second reflective area 132 can be annular. The axes of the first reflective area 131 and the second reflective area 132 can be collinear, thus making the light spot located directly below the light source module 100 centrally symmetrical. Of course, the shapes of the first reflective area 131 and the second reflective area 132 can be flexibly defined, which will not be elaborated here.

[0056] In one embodiment, the first reflective area 131 and the second reflective area 132 can together cover the top surface 13 of the light guide 10. In other words, when the light guide 10 is a flat cylinder, the projected area of ​​the first reflective area 131 and the second reflective area 132 on the light emitting surface 12 is equal to the area of ​​the light emitting surface 12. Of course, the first reflective area 131 and the second reflective area 132 may not cover the entire top surface 13.

[0057] In this embodiment of the invention, in order to obtain different light distribution curves, the area ratio of the first reflection area 131 and the second reflection area 132 can be between 1:9 and 9:1, for example 2:8, 3:7, 4:6, 5:5, 6:4, 7:3, 8:2, etc.

[0058] exist Figure 7 The document presents several embodiments with different area ratios of the first reflective region 131 and the second reflective region 132. It shows the light distribution curves of the light source module 100 under different area ratios of the first reflective region 131 and the second reflective region 132, and shows the uniformity of the light spot of the light source module 100 at vertical distances from the optical axis of 0-300mm, 300-500mm, and 0-500mm, respectively.

[0059] from Figure 7 As can be seen, after the light from the light source board 20 is incident and reflected and refracted by the first reflection area 131, most of the light is emitted at a small angle and projected onto the near-end area within a 300mm radius of the center of the light source module, directly improving or mainly controlling the illuminance at the 300mm ring, while also taking into account the illuminance level below the lamp. From Figure 7 It can also be seen that after the light from the light source plate 20 is incident, it is reflected and refracted by the second reflection area 132, and most of the light is emitted at a large angle and projected to the far end area about 500mm away from the center of the light source block, directly improving or mainly controlling the illuminance at the 500mm ring.

[0060] In this embodiment of the invention, the light source plate 20 can be disposed around the light guide 10, surrounding the light incident surface 11 and facing the light incident surface 11. The light incident surface 11 of the light guide 10 can connect the top surface 13 and the light emitting surface 12. In other words, the light source module 100 of this embodiment of the invention is provided with a light guide 10 and the light source is disposed in a side-incident manner, thereby reducing the thickness of the light source module 100. Of course, in some embodiments, the light source plate 20 in the light source module 100 can be disposed on the top of the light guide 10, that is, the light source is disposed in a direct-down manner. In this case, the first reflection area 131 and the second reflection area 132 can be disposed in the middle or side of the light guide 10, for example, dispersedly disposed in the middle of the light guide 10, refracting or reflecting the light from the top onto the light emitting surface 12 opposite to the top.

[0061] The light-incident surface 11 can be an annular side surface, and the light-exit surface 12 and the top surface 13 can both be circular, or other shapes, such as rectangular, square, pentagonal, or irregular shapes. In other words, the light guide 10 can be a flat cylindrical shape, or approximately a flat cylindrical shape.

[0062] In this embodiment of the invention, the light source module 100 may further include a reflective element 30, which may be disposed on the surface of the light guide 10 facing away from the light emitting surface 12. The reflective element 30 can reflect all light rays incident on the reflective element 30 so that they can be emitted from the light emitting surface 12, thereby improving the luminous efficiency of the light source module 100.

[0063] In this embodiment of the invention, the light source board 20 may include a light substrate and a light-emitting unit. The light-emitting unit is disposed on the light substrate and faces the light incident surface 11 of the light guide 10. Part of the light from the light source board 20 can be directly incident on the first reflection area 131, and part of the light can be directly incident on the second reflection area 132.

[0064] In this embodiment of the invention, the top surface 13 of the light guide 10 may further include a third reflective region, which surrounds the second reflective region 132. The emitted light rays reflected or refracted by the third reflective region can be referred to as third rays. The emission angle of the third ray may be different from the emission angle of the second ray or the emission angle of the first ray. For example, the emission angle of the third ray may be greater than the emission angle of the second ray.

[0065] A third microstructure can be provided on the third reflection area. This third microstructure can be a third dot or a third inclined surface to make the emission angle of the third ray larger. Of course, in some embodiments, outside the light-emitting surface 12, the third ray can be deviated from the optical axis of the light source module 100; or conversely, the third ray can be oriented towards the optical axis of the light source module 100.

[0066] In practical applications, the number of reflective areas on the light guide 10 can be more than three, such as four, five or more, and the emission angle of the emitted light reflected or refracted by the reflective area closer to the periphery can be larger.

[0067] In this embodiment of the invention, the light source module 100 may further include a housing, on which a light outlet is provided, and the light source plate 20 and the light guide 10 described above are housed inside the housing. The light-emitting surface 12 of the light guide 10 is disposed facing the light outlet of the housing so that light can be emitted to the outside of the light source module 100.

[0068] In this embodiment of the invention, the emitted light reflected or refracted by the first reflection zone 131 can be parallel light or nearly parallel light, and the emission angle can be any angle within 5 degrees, 10 degrees, 15 degrees, 20 degrees, 30 degrees, 45 degrees, or 60 degrees; correspondingly, the emission angle of the emitted light reflected or refracted by the second reflection zone 132 can be any angle within 15 degrees, 20 degrees, 30 degrees, 45 degrees, 70 degrees, 90 degrees, or 120 degrees. If the light guide 10 also includes a third reflection zone, the emission angle of the emitted light reflected or refracted by the third reflection zone can be even higher.

[0069] In this embodiment of the invention, the thickness of the light guide 10 can be between 2 and 5 millimeters, that is, the height between the light-emitting surface 12 and the top surface 13 of the light guide 10 can be between 2 and 5 millimeters. The above-mentioned microstructure appears to the naked eye as a frosted or matte finish. The above-mentioned reflective element 30 can be a white reflective film, a half-head half-mirror, or a reflector.

[0070] The light source module 100 in this embodiment of the invention can be applied to various lighting devices, such as table lamps, wall lamps, ceiling lamps, etc.

[0071] Taking a desk lamp as an example, current light guide plates cannot precisely control the direction of emitted light across multiple areas. When applied to a desk lamp, it is impossible to independently adjust the illuminance uniformity of the near-end area (the area directly below and near the lamp head) and the far-end area (the outer perimeter area below the lamp head, away from directly below), thus hindering flexible design and development based on specific customer requirements. In this embodiment of the invention, by setting two different microstructures on the light guide 10 and allowing for editable design of the microstructure ratio, the illuminance and illuminance uniformity of the near-end and far-end areas can be effectively and precisely controlled for independent adjustment. This achieves both ultra-high uniformity lighting effects over large areas and high illuminance levels in small areas.

[0072] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A light source module (100), characterized in that, include: A light guide (10) includes an incident light surface (11), an exit light surface (12) and a top surface (13). The top surface (13) is disposed opposite to the exit light surface (12). The top surface (13) includes a first reflection area (131) and a second reflection area (132). The second reflection area (132) surrounds the first reflection area (131). The light source plate (20) emits light that is incident on the light incident surface (11) to form a source light. The source light is reflected and / or refracted by the first reflection area and the second reflection area to form a first light and a second light respectively. The first light and the second light are both emitted from the light exiting surface (12). On the light exiting surface (12), the emission angle of the first light is smaller than that of the second light. The light-emitting surface (12) includes a central region and a peripheral region surrounding the central region; A first microstructure is provided on the first reflective region (131), and / or a second microstructure is provided on the second reflective region (132); The first microstructure is used to refract and / or reflect the first light ray to form the first light ray emitted from the central region; the second microstructure is used to refract and / or reflect the second light ray to form the second light ray emitted from the peripheral region; The top surface (13) also includes a third reflective area, which surrounds the second reflective area (132), and the angle of the emitted light from the third reflective area is greater than the angle of the emitted light from the second light.

2. The light source module (100) according to claim 1, characterized in that, On the light-emitting surface (12), the second light ray deflects away from the optical axis of the light source module (100).

3. The light source module (100) according to claim 1, characterized in that, The first microstructure and the second microstructure are integrally disposed on the light guide (10).

4. The light source module (100) according to claim 1, characterized in that, The light guide (10) is configured separately. The light guide (10) includes a first light guide element and a second light guide element. The first microstructure is disposed on the first light guide element, and the second microstructure is disposed on the second light guide element.

5. The light source module (100) according to claim 1, characterized in that, The first reflective area (131) is circular, and the second reflective area (132) is annular. The axes of the first reflective area (131) and the second reflective area (132) are collinear.

6. The light source module (100) according to claim 5, characterized in that, The area ratio of the first reflective area (131) to the second reflective area (132) is between 1:9 and 9:

1.

7. The light source module (100) according to any one of claims 1 to 6, characterized in that, The light-incident surface (11) connects the top surface (13) and the light-outcident surface (12), and the light source plate (20) surrounds the light-incident surface (11) and is disposed toward the light-incident surface (11).

8. The light source module (100) according to any one of claims 1 to 6, characterized in that, It also includes a reflective element (30), which is disposed on the surface of the light guide (10) away from the light-emitting surface (12).

9. The light source module (100) according to any one of claims 1 to 6, characterized in that, It also includes: a housing, in which the light source plate (20) and the light guide (10) are housed, the housing is provided with a light outlet, and the light outlet surface (12) faces the light outlet.

10. A lighting device, characterized in that, Includes the light source module (100) as described in any one of claims 1-9.

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