Illuminating lamp

Abstract

The invention discloses a lighting lamp, and relates to the technical field of lighting equipment, the disclosed lighting lamp comprises a first lamp body and at least one second lamp body, the first lamp body comprises a first shell and a first light-emitting assembly arranged in the first shell, and the first lamp body is used for concentrated lighting; the second lamp body is arranged on the side edge of the first lamp body and used for wide-area illumination, the second lamp body comprises a second shell, a second light source and a light source diffusion assembly, the second light source and the light source diffusion assembly are arranged in the second shell, and the light source diffusion assembly comprises a first light inlet face and a first light outlet face; the light source diffusion assembly is used for receiving initial emergent light rays of the second light source and emitting the initial emergent light rays from the first light emitting face in a divergent mode. By means of the combination of the first lamp body and the second lamp body, the brightness and the illumination range of an illuminated face are guaranteed, the problems of exposure and glare of the illuminated face are solved, and therefore visual fatigue is relieved, and the eye protection effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting devices, and in particular to a lighting fixture. Background Art

[0002] With the improvement of the quality of life, table lamps have become an indispensable item in people's daily lives. In the case of insufficient indoor lighting, table lamps are usually used as supplementary lighting devices. Especially when users have the need to read and write, table lamps can ensure the brightness of the reading and writing areas of users.

[0003] In the related art, in order to ensure the brightness of the table lamp, most of the light irradiated by the table lamp is concentrated in a small area. However, the concentrated irradiation in a small area is likely to cause problems such as overexposure and glare on the illuminated surface, which will cause visual fatigue after long-term use and even affect the user's eyesight and physical health. Summary of the Invention

[0004] The present invention discloses a lighting fixture to solve the problem that most of the light irradiated by the table lamp in the related art is concentrated in a small area, which is likely to cause problems such as overexposure and glare on the illuminated surface.

[0005] To solve the above technical problems, the present invention is implemented as follows:

[0006] The technical solution of the present invention discloses a lighting fixture, including:

[0007] A first lamp body, including a first housing and a first light-emitting component disposed in the first housing, the first lamp body being used for concentrated lighting;

[0008] At least one second lamp body, disposed on the side of the first lamp body for wide-area lighting, the second lamp body including a second housing, a second light source and a light source diffusion component disposed in the second housing, the light source diffusion component including a first light-incident surface and a first light-emitting surface, the first light-incident surface facing the second light source, and the light source diffusion component being used for receiving the initial emitted light of the second light source and emitting the initial emitted light in a divergent manner from the first light-emitting surface.

[0009] Optionally, the light source diffusion component includes:

[0010] A diffusion main body, on which both the first light-incident surface and the first light-emitting surface are provided, the diffusion main body further including a functional surface, the functional surface being disposed opposite to the first light-emitting surface and connected through the first light-incident surface;

[0011] A plurality of light diffusing lenses are disposed on the functional surface, and the plurality of light diffusing lenses are all concave with respect to the functional surface. The light diffusing lenses are used to reflect and / or refract the initially emitted light rays so that the initially emitted light rays are emitted in a divergent manner from the first light-emitting surface and the functional surface.

[0012] Optionally, the light source diffusion assembly further includes a reflector, which is disposed on the side of the diffusion body where the functional surface is provided. The reflector is used to reflect the light rays transmitted through the functional surface back to the functional surface.

[0013] Optionally, the plurality of light diffusing lenses are arranged in an array on the functional surface.

[0014] Optionally, the curvatures of the plurality of light diffusing lenses are all the same.

[0015] Optionally, the second light source is disposed on the side surface of the second housing, and the direction of the initially emitted light rays is parallel to the first light-emitting surface.

[0016] Optionally, the number of the second lamp bodies is two. The two second lamp bodies are symmetrically distributed on the opposite sides of the first lamp body and are respectively connected to the first lamp body.

[0017] Optionally, the first light-emitting component includes:

[0018] A first light source;

[0019] A light guide plate, which includes a second light-incident surface and at least one second light-emitting surface. The second light-incident surface faces the first light source. The light guide plate is used to receive the emitted light rays of the first light source and emit the emitted light rays from at least one of the second light-emitting surfaces.

[0020] Optionally, the number of the second light-emitting surfaces is two, including a first sub-light-emitting surface and a second sub-light-emitting surface. The first sub-light-emitting surface and the second sub-light-emitting surface are disposed opposite to each other on the light guide plate and are connected through the second light-incident surface;

[0021] The first light-emitting component further includes a semi-transmissive and semi-reflective back plate, which is disposed on the side of the light guide plate where the second sub-light-emitting surface is provided. The semi-transmissive and semi-reflective back plate is used to transmit a part of the light rays transmitted through the second sub-light-emitting surface out of the semi-transmissive and semi-reflective back plate, and reflect another part of the light rays transmitted through the second sub-light-emitting surface back to the second sub-light-emitting surface.

[0022] Optionally, the first light source is annular and is disposed around the circumference of the light guide plate. The direction of the emitted light rays of the first light source is parallel to the second light-emitting surface.

[0023] The technical solution adopted by the present invention can achieve the following technical effects:

[0024] The lighting fixture disclosed by the technical solution of the present invention includes a first lamp body and at least one second lamp body. The first lamp body includes a first housing and a first light-emitting component disposed within the first housing. The first lamp body is used for focused lighting, ensuring the brightness of the illuminated surface. The second lamp body is disposed on the side of the first lamp body and is used for wide-area lighting. The second lamp body includes a second housing, a second light source disposed within the second housing, and a light source diffusion component. The light source diffusion component includes a first light-incident surface and a first light-emitting surface. The first light-incident surface faces the second light source. The light source diffusion component is used for receiving the initial emitted light of the second light source and emitting the initial emitted light in a divergent manner from the first light-emitting surface, expanding the lighting area and reducing the problems of overexposure and glare on the illuminated surface. By using the combination of the first lamp body and the second lamp body, both the brightness and the lighting area of the illuminated surface are ensured, and the problems of overexposure and glare on the illuminated surface are reduced, thereby alleviating visual fatigue and achieving the effect of protecting eyes. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the lighting fixture disclosed by the embodiment of the present invention;

[0026] Figure 2 It is a schematic structural diagram of the second light source and the light source diffusion component disclosed by the embodiment of the present invention;

[0027] Figure 3 It is an optical path diagram of the second light source and the light source diffusion component disclosed by the embodiment of the present invention;

[0028] Figure 4 It is one of the schematic structural diagrams of the second lamp body disclosed by the embodiment of the present invention;

[0029] Figure 5 It is another schematic structural diagram of the second lamp body disclosed by the embodiment of the present invention;

[0030] Figure 6 It is a schematic structural diagram of the diffusion main body and the light-expanding lens disclosed by the embodiment of the present invention;

[0031] Figure 7 It is one of the optical path diagrams of the light source diffusion component disclosed by the embodiment of the present invention;

[0032] Figure 8 It is another optical path diagram of the light source diffusion component disclosed by the embodiment of the present invention;

[0033] Figure 9 It is a third optical path diagram of the light source diffusion component disclosed by the embodiment of the present invention;

[0034] Figure 10 It is a fourth optical path diagram of the light source diffusion component disclosed by the embodiment of the present invention;

[0035] Figure 11 Structural schematic diagram of the first light-emitting component disclosed in the embodiment of the present invention;

[0036] Figure 12 Optical path diagram of the first light-emitting component disclosed in the embodiment of the present invention.

[0037] Explanation of reference numerals:

[0038] 100 - First lamp body, 110 - First housing, 120 - First light-emitting component, 121 - First light source, 122 - Light guide plate, 123 - Second light incident surface, 124 - Second light exit surface, 1241 - First sub-light exit surface, 1242 - Second sub-light exit surface, 125 - Half-reflective and half-transmissive backplane;

[0039] 200 - Second lamp body, 210 - Second housing, 220 - Second light source, 230 - Light source diffusion component, 231 - First light incident surface, 232 - First light exit surface, 233 - Diffusion main body, 234 - Functional surface, 235 - Diffusion lens, 236 - Reflective member. Detailed implementation manners

[0040] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] The terms "first", "second", etc. in the description and claims of the present invention are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention can be implemented in an order different from those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or multiple.

[0042] The following will describe in detail the technical solutions disclosed in each embodiment of the present invention with reference to the drawings.

[0043] Please refer to Figures 1 to 12, embodiments of the present invention disclose a lighting fixture. The disclosed lighting fixture may include a first lamp body 100 and at least one second lamp body 200. The second lamp body 200 is disposed on the side of the first lamp body 100. It should be noted that the first lamp body 100 has a light-emitting side and a back plate disposed opposite to each other, and the sides of the first lamp body 100 are respectively connected to the light-emitting side and the back plate. The specific number of the second lamp bodies 200 may be one, two, or more than two. Taking two second lamp bodies 200 as an example, as Figure 1 shown, the two second lamp bodies 200 can be respectively disposed on two opposite sides of the first lamp body 100. The light-emitting directions of the first lamp body 100 and the two second lamp bodies 200 are the same, but there are differences in the illumination areas.

[0044] The first lamp body 100 is used for concentrated lighting. Specifically, it may include a first housing 110 and a first light-emitting component 120. The first light-emitting component 120 is disposed in the first housing 110. The first light-emitting component 120 may include a light source, a diffuser plate, wires, etc. The first light-emitting component 120 is mainly used for emitting light.

[0045] The second lamp body 200 is used for wide-area lighting. Specifically, it may include a second housing 210, a second light source 220, and a light source diffusion component 230. Both the second light source 220 and the light source diffusion component 230 are disposed in the second housing 210. The second light source 220 may be an incandescent lamp, an LED (Light Emitting Diode), etc. The light source diffusion component 230 includes a first light-incident surface 231 and a first light-emitting surface 232. The first light-incident surface 231 faces the second light source 220, can receive the initial emitted light from the second light source 220, and emit the initial emitted light in a divergent manner from the first light-emitting surface 232, thereby increasing the illumination area of the second lamp body 200 and reducing the illuminance at the same time. Among them, illuminance is a quantity indicating the intensity of light and the degree of illumination of the surface area of an object. The relationship between illuminance and luminous intensity is shown in the following formula:

[0046] E = I * cos 3 θ / d 2

[0047] where E is the illuminance, I is the luminous intensity, θ is the angle between the illuminated point and the vertical center line of the lamp head, and d is the vertical distance between the light-emitting surface of the lamp head and the illuminated surface.

[0048] It should be noted that the main difference between concentrated lighting and wide-area lighting lies in the illumination area and illuminance. For the illumination area, concentrated lighting is smaller than wide-area lighting. For illuminance, concentrated lighting is greater than wide-area lighting. That is, wide-area lighting has a larger illumination area and lower illuminance, and it is not easy to produce glare and overexposure in the illumination area.

[0049] The first housing 110 and the second housing 210 can be made by an integral molding method and divided into different functional areas to accommodate the first light-emitting component 120, the second light source 220, and the light source diffusion component 230 respectively. The first housing 110 and the second housing 210 can also be made separately and connected together by a bracket structure, or connected together by bonding, snap connection, or other means.

[0050] As can be seen from the above description, the lighting fixture disclosed in the embodiment of the present invention improves the related art. The light source diffusion component 230 receives the initial emitted light of the second light source 220 and emits the initial emitted light in a divergent manner from the first light-emitting surface 232, expanding the lighting area and reducing the problems of exposure and glare on the illuminated surface. By using the combination of the first lamp body 100 and the second lamp body 200, the brightness and lighting area of the illuminated surface are ensured, and the problems of exposure and glare on the illuminated surface are reduced, thereby alleviating visual fatigue and achieving the effect of protecting eyes.

[0051] Further, as Figures 2 to 10 shown, the light source diffusion component 230 may include a diffusion body 233. The shape of the diffusion body 233 may be a cube, a frustum of a cone, or other shapes. The first light-incident surface 231 and the first light-emitting surface 232 are both provided on the diffusion body 233. A functional surface 234 is also provided on the diffusion body 233. The functional surface 234 is arranged opposite to the first light-emitting surface 232, and the functional surface 234 and the first light-emitting surface 232 are connected by the first light-incident surface 231.

[0052] The light source diffusion component 230 further includes a plurality of light diffusion lenses 235. The plurality of light diffusion lenses 235 are provided on the functional surface 234, and the plurality of light diffusion lenses 235 are all recessed in the functional surface 234 and arranged in a hole form on the functional surface 234. The initial emitted light direction can be determined by the plurality of light diffusion lenses 235.

[0053] Specifically, as Figure 3 、 Figures 7 to 10 shown, the initial emitted light enters the interior of the diffusion body 233 through the first refraction of the first light-incident surface 231. After encountering the light diffusion lens 235, refraction and reflection can occur on the curved surface of the light diffusion lens 235, and two paths of light, L1 and L2, are formed. The light L2 exits downward through the refraction of the light diffusion lens 235 and is emitted from the first light-emitting surface 232. As Figure 10 shown, the light L2 passes through the light diffusion lens 235 to achieve the effect of polarizing in the positive direction of the y-axis and expanding in the positive and negative directions of the x-axis, so that the initial emitted light is emitted in a divergent manner from the first light-emitting surface 232, and the emitted light expands in the positive direction of the y-axis and the positive and negative directions of the x-axis, thereby increasing the illumination area.

[0054] The light ray L1 is refracted upward by the light diffusing lens 235 and emitted through the functional surface 234. For the light ray L1 emitted from the functional surface 234, a reflector 236 can be arranged on the side of the diffusion body 233 where the functional surface 234 is located. The reflector 236 can specifically be a reflecting lens, a reflective paper, etc. The reflector 236 can be used to reflect the light ray L1 back to the functional surface 234 again, and then through the refraction of the light diffusing lens 235 again, the light is emitted downward and out through the first light-emitting surface 232. By controlling the curvature of the light diffusing lens 235, the angles of the refracted light and the reflected light can be controlled, so that the light rays emitted from the functional surface 234 can be concentrated at a specific angle, thereby controlling the shape and illuminance of the illumination area.

[0055] The light source diffusion component 230 can reasonably distribute the initial emitted light rays through multiple refractions and reflections, and deflect most of the light rays towards the working area. To avoid the phenomenon of under-light exposure, the curvature of the light diffusing lens 235 can also be controlled to differentially design the light rays at different angles, and the light rays can be reasonably distributed on the entire illuminated surface, enabling the illuminance of the initial emitted light rays to transition evenly in the illuminated area.

[0056] Furthermore, as Figure 6 shown, multiple light diffusing lenses 235 are arranged in an array on the functional surface 234, which can fully receive the initial emitted light rays and refract and reflect them. Under the action of multiple light diffusing lenses 235 arranged in an array, the emitted light can be made more uniform, and at the same time, the effect of positive polarization in the y-axis direction and positive and negative light diffusion in the x-axis direction can be improved, thereby ensuring the uniformity of the brightness and illuminance of the illuminated surface.

[0057] In some optional embodiments, as Figure 6 shown, the curvatures of multiple light diffusing lenses 235 are the same, which can make the emitted light more uniform, ensure the uniformity of the illuminated surface, and at the same time, it is also convenient for manufacturing. Of course, the curvatures of multiple light diffusing lenses 235 can also be differentially designed to change the polarization angle and light diffusion range of the emitted light, so that the lighting fixture can adapt to more usage scenarios, thereby improving the flexibility.

[0058] Furthermore, as Figures 2 to 3 shown, the second light source 220 is arranged on the side surface of the second housing 210. It should be noted that the second housing 210 also has a light-emitting side and a back plate, and the light-emitting side and the back plate are connected by the side surface. By adopting the method of arranging the second light source 220 on the side surface, that is, the side-emitting method, since the direction of the initial emitted light rays of the second light source 220 is parallel to the first light-emitting surface 232, the problem of the second light source 220 directly irradiating the first light-emitting surface 232 is avoided. Compared with the direct-downward light-emitting method, the light rays emitted through the first light-emitting surface 232 are softer; combined with the refraction of the light source diffusion component 230 and the reflection of the reflecting member, a wide-area lighting effect is achieved through the dual action.

[0059] In some alternative embodiments, such as Figure 1 shown, the specific number of the second lamp bodies 200 may be one, two or more than two. Taking two second lamp bodies 200 as an example, as Figure 1 shown, the two second lamp bodies 200 may be symmetrically distributed on opposite sides of the first lamp body 100 respectively, and the two second lamp bodies 200 are connected to the first lamp body 100. The specific connection method may be bonding, snap connection, bolt connection, etc. By symmetrically arranging two second lamp bodies 200 on both sides of the first lamp body 100, the first lamp body 100 is used for concentrated illumination, and the two second lamp bodies 200 are used to form two wide-area illumination areas on both sides of the concentrated illumination area, so that the distribution of the entire illumination area is more uniform.

[0060] Furthermore, as Figures 11 to 12 shown, the first light-emitting component 120 may specifically include a first light source 121. The first light source 121 may be an incandescent lamp, an LED, etc. The first light source 121 may be a strip-shaped light source or a ring-shaped light source, etc. The first light-emitting component 120 further includes a light guide plate 122. The shape of the light guide plate 122 may be rectangular, circular, etc. The light guide plate 122 includes a second light incident surface 123 and at least one second light exit surface 124. The second light incident surface 123 faces the first light source 121. The light guide plate 122 can receive the emitted light of the first light source 121 and emit the emitted light from at least one second light exit surface 124. The emitted light of the first light source 121 can be evenly diverged onto the second light exit surface 124 through refraction and reflection in the light guide plate 122, thereby improving the uniformity of the illumination of the first lamp body 100.

[0061] Furthermore, as Figures 11 to 12 shown, the number of the second light exit surfaces 124 is two, including a first sub-light exit surface 1241 and a second sub-light exit surface 1242. The first sub-light exit surface 1241 and the second sub-light exit surface 1242 are arranged back to back on the light guide plate 122 and are connected through the second light incident surface 123.

[0062] The first light-emitting component 120 further includes a semi-transmissive and semi-reflective back plate 125. The semi-transmissive and semi-reflective back plate 125 is arranged on the side of the light guide plate 122 where the second sub-light exit surface 1242 is provided. The semi-transmissive and semi-reflective back plate 125 has the functions of transmission and reflection. That is, part of the light irradiated on the semi-transmissive and semi-reflective back plate 125 can be transmitted through the semi-transmissive and semi-reflective back plate 125, and the other part can be reflected by the semi-transmissive and semi-reflective back plate 125. Therefore, the semi-transmissive and semi-reflective back plate 125 can continue to transmit part of the light transmitted by the second sub-light exit surface 1242 out of the semi-transmissive and semi-reflective back plate 125, and at the same time reflect the other part of the light transmitted by the second sub-light exit surface 1242 to the second sub-light exit surface 1242.

[0063] Specifically, as Figures 11 to 12As shown in the figure, after the light emitted by the first light source 121 passes through the light guide plate 122, the light is divided into two paths. The light emitted upward is V1, and the light emitted downward is V2. After V1 passes through the semi-transmissive and semi-reflective back plate 125, the light is divided into two paths again. Part of the light is transmitted upward, and part of the light is reflected downward. The light emitted upward is responsible for ambient lighting, and the light emitted downward is responsible for small-area concentrated lighting, which can meet the requirements of different scenarios.

[0064] Further, as Figures 11 to 12 shown, the first light source 121 is annular, and the annular first light source 121 is arranged around the circumference of the light guide plate 122, so as to provide emitted light from various angles on the circumference of the light guide plate 122, further improving the uniformity of illumination of the first lamp body 100.

[0065] The direction of the emitted light of the first light source 121 is parallel to the second light-emitting surface 124, avoiding the problem that the first light source 121 directly irradiates the second light-emitting surface 124. Compared with the direct-downlight emission mode, the light emitted through the second light-emitting surface 124 is softer.

[0066] In the above embodiments of the present invention, the differences between the various embodiments are mainly described. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a more optimal embodiment. For the sake of brevity of the text, they will not be elaborated here.

[0067] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the present invention and the claims, and all of them belong to the protection scope of the present invention.

Claims

1. A lighting fixture, characterized in that, it comprises: A first lamp body (100), including a first housing (110) and a first light-emitting component (120) disposed within the first housing (110), the first lamp body (100) being used for concentrated lighting; At least one second lamp body (200), disposed on the side of the first lamp body (100) for wide-area lighting, the second lamp body (200) including a second housing (210), a second light source (220) and a light source diffusion component (230) disposed within the second housing (210), the light source diffusion component (230) including a first light-incident surface (231) and a first light-emitting surface (232), the first light-incident surface (231) facing the second light source (220), the light source diffusion component (230) being used for receiving the initial emitted light rays of the second light source (220) and emitting the initial emitted light rays in a divergent manner from the first light-emitting surface (232).

2. The lighting fixture according to claim 1, characterized in that, the light source diffusion component (230) comprises: A diffusion main body (233), both the first light-incident surface (231) and the first light-emitting surface (232) being disposed on the diffusion main body (233), the diffusion main body (233) further including a functional surface (234), the functional surface (234) being disposed opposite to the first light-emitting surface (232) and connected through the first light-incident surface (231); A plurality of light-diffusing lenses (235), disposed on the functional surface (234), and a plurality of the light-diffusing lenses (235) being recessed within the functional surface (234), the light-diffusing lenses (235) being used for reflecting and / or refracting the initial emitted light rays so that the initial emitted light rays are emitted in a divergent manner from the first light-emitting surface (232) and the functional surface (234).

3. The lighting fixture according to claim 2, characterized in that, the light source diffusion component (230) further includes a reflecting member (236), the reflecting member (236) being disposed on the side of the diffusion main body (233) where the functional surface (234) is provided, the reflecting member (236) being used for reflecting the light rays transmitted through the functional surface (234) back to the functional surface (234).

4. The lighting fixture according to claim 2, characterized in that, a plurality of the light-diffusing lenses (235) are arranged in an array on the functional surface (234).

5. The lighting fixture according to claim 2, characterized in that, the curvatures of a plurality of the light-diffusing lenses (235) are the same.

6. The lighting fixture according to claim 2, characterized in that, the second light source (220) is disposed on the side surface of the second housing (210), and the direction of the initial emitted light rays is parallel to the first light-emitting surface (232).

7. The lighting fixture according to any one of claims 1-6, characterized in that, The number of the second lamp bodies (200) is two, and the two second lamp bodies (200) are symmetrically distributed on opposite sides of the first lamp body (100) respectively, and are respectively connected to the first lamp body (100).

8. The lighting fixture according to claim 1, wherein, the first light-emitting component (120) includes: a first light source (121); a light guide plate (122), the light guide plate (122) includes a second light-incident surface (123) and at least one second light-emitting surface (124), the second light-incident surface (123) faces the first light source (121), and the light guide plate (122) is configured to receive the emitted light of the first light source (121) and emit the emitted light from at least one of the second light-emitting surfaces (124).

9. The lighting fixture according to claim 8, wherein, the number of the second light-emitting surfaces (124) is two, including a first sub-light-emitting surface (1241) and a second sub-light-emitting surface (1242), the first sub-light-emitting surface (1241) and the second sub-light-emitting surface (1242) are arranged back to back on the light guide plate (122), and are connected through the second light-incident surface (123); the first light-emitting component (120) further includes a semi-transmissive and semi-reflective back plate (125), the semi-transmissive and semi-reflective back plate (125) is disposed on a side of the light guide plate (122) where the second sub-light-emitting surface (1242) is provided, and the semi-transmissive and semi-reflective back plate (125) is configured to transmit a part of the light transmitted by the second sub-light-emitting surface (1242) out of the semi-transmissive and semi-reflective back plate (125), and reflect another part of the light transmitted by the second sub-light-emitting surface (1242) to the second sub-light-emitting surface (1242).

10. The lighting fixture according to claim 8, wherein, the first light source (121) is annular and is disposed around the periphery of the light guide plate (122), and the direction of the emitted light of the first light source (121) is parallel to the second light-emitting surface (124).

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