WO2025228291A1 - Side-emitting illumination device and lamp - Google Patents

Abstract

A side-emitting illumination device (100) and a lamp (200). The side-emitting illumination device (100) comprises a housing (11) and a light source module (12). The housing (11) comprises a top wall (111) and a bottom wall (112) which are oppositely arranged, and a frame (113) connecting the top wall (111) and the bottom wall (112). A light source mounting space (115) is enclosed by the top wall (111), the bottom wall (112) and the frame (113), and a first light outlet (114) is provided on the side of the light source mounting space (115) away from the frame (113). The light source module (12) comprises: at least two light source assemblies (121), the at least two light source assemblies (121) being arranged on different sides of the light source mounting space (115); and light distribution components (122) arranged in a light-exiting path of the light source module (12) and corresponding to the light source assemblies (121) on a one-to-one basis. Light emitted by the light source module (12) exits from the first light outlet (114) after being acted upon by the light distribution components (122). By arranging two or more light source assemblies (121) on different sides of the light source mounting space (115), respectively, the illumination brightness can be effectively improved, and different illumination effects can be achieved.

Description

Side-emitting lighting devices and lamps

This application claims priority to Chinese Patent Application No. 202420943115.3, filed on April 30, 2024, entitled “Side-emitting Lighting Device and Lamp Fixture”, the entire contents of which are incorporated herein by reference.

Technical Field

This application relates to the field of lighting, and more particularly to a side-emitting lighting device and lamp.

Background Technology

As living standards improve, people have increasingly higher demands for lighting in various scenarios. Among these, side-emitting lighting devices that can simulate outdoor natural ambient light are gradually gaining market favor and are widely used in indoor lighting for homes, office buildings, shopping malls, stadiums, train stations, airports, and other locations. Traditional blue sky lights generally consist of a light source and a pattern panel depicting blue sky and white clouds. The light source illuminates the pattern panel to create an outdoor blue sky lighting environment. However, this approach cannot realistically represent the matching effect of blue sky and sunlight, resulting in poor layering, a lack of three-dimensionality, and unrealistic simulation.

In response, blue sky lights have emerged on the market that combine a light source with a diffuser panel to create sunlight similar to that found in nature. However, the light source is generally installed on the same side, resulting in relatively low brightness and uneven light emission, which significantly reduces the lighting effect.

In view of this, it is indeed necessary to provide a side-emitting lighting device and lamp to solve the above-mentioned technical problems.

Summary of the Invention

The purpose of this application is to provide a side-emitting lighting device that improves the brightness and uniformity of illumination, and to be applied to lamps.

To achieve the above objectives, this application provides a side-emitting lighting device for use in lamps, comprising a housing and a light source module. The housing includes a top wall and a bottom wall disposed opposite to each other, and a frame connecting the top wall and the bottom wall. A light source mounting space is formed between the top wall, the bottom wall, and the frame, and a first light outlet is provided on the side of the light source mounting space away from the frame. The light source module includes at least two light source components, and the at least two light source components are disposed on different sides of the light source mounting space. A light distribution element is disposed in the light output path of the light source module and is disposed in correspondence with each of the light source components. The light emitted by the light source module is emitted from the first light outlet after being acted upon by the light distribution element.

Optionally, it also includes a light-emitting element, which is disposed at the first light-emitting port, abuts against the top wall and the bottom wall, and is located inside the frame. The light emitted by the light source module is emitted through the light-emitting element after being acted upon by the light distribution element.

Optionally, the light source module includes a first light source assembly and a second light source assembly, one of which is disposed on the top wall and the other on the bottom wall; the light distribution element includes a first light distribution element and a second light distribution element, which are respectively disposed on the first light source assembly and the second light source assembly; or,

The light source module includes a first light source component and a second light source component. One of the first light source component and the second light source component is disposed on the top wall or the bottom wall, and the other is disposed on the frame. The light distribution element includes a first light distribution element and a second light distribution element, which are respectively covered on the first light source component and the second light source component.

Optionally, the side-emitting lighting device further includes a reflector, which is disposed on the side of the frame facing the first light outlet. After the light emitted by the light source assembly is acted upon by the light distribution component, part of the light is directly emitted through the first light outlet, and part of the light is emitted towards the frame and then reflected by the reflector before being emitted from the first light outlet.

Optionally, the housing is configured to be at least partially transparent, and the housing further includes a second light-emitting port disposed opposite to or adjacent to the first light-emitting port. The light emitted by the light source module is emitted through the light distribution element and then emitted through the first light-emitting port and the second light-emitting port respectively.

Optionally, the light distribution element is any one or a combination of a light guide plate, a lens, a reflector, and a reflector cup.

Optionally, each of the light source components includes a light source substrate and a plurality of light-emitting elements disposed on the light source substrate. The plurality of light-emitting elements can be independently controlled. By controlling the illumination state of the light-emitting elements, an illuminated light-emitting area and an unilluminated non-light-emitting area are formed at the first light-emitting port, with a light/shadow transition zone between the light-emitting area and the non-light-emitting area; or,

Each of the light source components includes a light source substrate partially surrounding the first light exit port and a plurality of light-emitting elements disposed on the light source substrate. The light-emitting elements are configured to form an illuminated light-emitting area on the first light exit port and an unilluminated non-light-emitting area on the portion of the first light exit port not surrounded by the light source component. A light/shadow transition zone exists between the light-emitting area and the non-light-emitting area; or...

The side-emitting lighting device includes a light-shielding member, which, together with the light source module, surrounds the first light outlet. The light source module is configured to form an illuminated light-emitting area on the first light outlet, and the light-shielding member is configured to form an unilluminated non-light-emitting area on the first light outlet. There is a light/shadow transition zone between the light-emitting area and the non-light-emitting area.

Optionally, the light source assembly includes a light source substrate and at least two different colored light-emitting elements disposed on the light source substrate, wherein the at least two different colored light-emitting elements are arranged in a cyclic manner on the light source substrate.

Another object of this application is to provide a luminaire that includes the above-described side-emitting lighting device.

To achieve the above objectives, this application also provides a lighting fixture, including the aforementioned side-emitting lighting device and a surface-emitting lighting device. The surface-emitting lighting device includes a main light source assembly, which is configured to emit light outward and has a main light source emitting surface. The side-emitting lighting device is arranged around the surface-emitting lighting device, and the first light outlet is connected to the main light source emitting surface and extends in a direction away from the main light source emitting surface.

Optionally, the surface-emitting illumination device further includes a light-emitting plate disposed on the light-emitting surface of the main light source. The side of the light-emitting plate facing away from the main light source assembly is a mirror. At least part of the light emitted by the side-emitting illumination device is projected onto the mirror after passing through the first light-emitting port, so as to form a virtual image on the light-emitting surface of the main light source.

Compared with traditional technologies, the technical solution of this application has the following beneficial effects:

The side-emitting lighting device of this application effectively improves lighting brightness by placing two or more light source components on different sides of the light source installation space. A light distribution element is installed in the light output path of the light source module, with each element corresponding to a specific light source component. The light emitted from the light source module is regulated by the light distribution element and then emitted from the first light outlet, effectively reducing light waste, improving light energy utilization, and achieving a highly efficient and uniform lighting effect. Furthermore, the number and layout of the light source components, as well as the shape and material of the light distribution element, can be adjusted according to specific needs, thereby flexibly controlling the lighting effect to meet the lighting requirements of different environments.

Attached Figure Description

Figure 1 is a three-dimensional structural diagram of the lamp provided in this application;

Figure 2 is a cross-sectional view at point A-A in Figure 1;

Figure 3 is a partial view of the circled area in Figure 2;

Figure 4 is a partial view of the circled area in Figure 3;

Figure 5 is a partial view of point B in Figure 4;

Figure 6 is an optical path diagram of Embodiment 1 of the side-emitting illumination device in this application;

Figure 7 is an optical path diagram of Embodiment 3 of the side-emitting illumination device in this application;

Figure 8 is a diagram showing the lighting effect of the lamps shown in Figure 1.

Explanation of reference numerals in the attached figures:
Housing 11, top wall 111, bottom wall 112, frame 113, first light outlet 114, light source mounting space 115;
Light source module 12, light source assembly 121, light source substrate 1211, light-emitting element 1212, light distribution element 122;
Light emitting part 13, reflecting part 14;
Side-emitting lighting device 100;
A surface-emitting lighting device 110, a main light source assembly 1101, a main light source emitting surface 1102, a light emitting plate 1103, and a mirror 1104;
Lighting fixtures 200.

Detailed Implementation

To make the objectives, technical solutions, and advantages of this application clearer, the application will be described in detail below with reference to the accompanying drawings and specific embodiments.

It should be noted that, in order to avoid obscuring this application with unnecessary details, only the structures and/or processing steps closely related to the solution of this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

Please refer to Figures 1-8. The lighting fixture 200 of this application includes a side-emitting lighting device 100 and a surface-emitting lighting device 110. The surface-emitting lighting device 110 is configured to simulate sunlight at different times of day in nature, and the side-emitting lighting device 100 is arranged around the surface-emitting lighting device 110, configured to simulate the effect of sunlight shining on the edge of a skylight. In addition, the side-emitting lighting device 100 can also form a virtual image in the surface-emitting lighting device 110.

Specifically, the surface-emitting lighting device 110 includes a main light source assembly 1101, which is configured to emit light outward and has a main light source emitting surface 1102. Preferably, the main light source assembly 1101 is a full-spectrum LED chip that can simulate the spectrum of sunlight. In other embodiments, the main light source assembly 1101 can also be a conventional white light source. By adding nanoparticles to the diffusion structure of the surface-emitting lighting device 110, Rayleigh scattering is formed, making the main light source emitting surface 1102 appear as blue as the sky. This application does not limit this. Preferably, the surface-emitting lighting device 110 also includes a light source element disposed above the side-emitting lighting device 100. The light source element emits light towards the mounting surface, which is generally the ceiling, to achieve a ceiling-washing light and shadow effect.

The side-emitting lighting device 110 also includes a light-emitting plate 1103 disposed on the light-emitting surface 1102 of the main light source. The side of the light-emitting plate 1103 facing away from the main light source assembly 1101 is a mirror 1104. At least part of the light emitted by the side-emitting lighting device 100 is projected onto the mirror 1104 after passing through the first light-emitting port 114 and is reflected by the mirror 1104 to form a virtual image on the light-emitting surface 1102 of the main light source, so as to simulate the window shadow effect formed on the window when one side of the window is illuminated by sunlight, making it appear deep and transparent to the human eye.

Specifically, the side-emitting lighting device 100 includes a housing 11 and a light source module 12 installed within the housing 11. The housing 11 includes a top wall 111 and a bottom wall 112 disposed opposite to each other, and a frame 113 connecting the top wall 111 and the bottom wall 112. A light source mounting space 115 is formed between the top wall 111, the bottom wall 112, and the frame 113. A first light outlet 114 is provided on the side of the light source mounting space 115 away from the frame 113. The first light outlet 114 of the side-emitting lighting device 100 is connected to the light-emitting surface 1102 of the main light source and extends in a direction away from the light-emitting surface 1102 of the main light source, ensuring that the light emitted by the side-emitting lighting device 100 can be smoothly projected onto the mirror surface 1104 of the light-emitting plate 1103 of the surface-emitting lighting device 110. This direct projection path effectively reduces light scattering and loss. Meanwhile, the extension of the first light outlet 114 creates a certain spatial distance between the light source of the side-emitting lighting device 100 and the light-emitting surface of the surface-emitting lighting device 110, making the ambient light of the side-emitting lighting device 100 more visually prominent and layered. This sense of distance makes the propagation of light between the two softer, avoiding direct or overly strong light effects, thus creating a more comfortable and natural lighting environment.

The light source module 12 includes at least two light source components 121 and a light distribution element 122. The at least two light source components 121 are positioned on different sides of the light source mounting space 115 to achieve multi-angle illumination and improve the uniformity of the lighting. The light distribution element 122 is positioned in the light output path of the light source module 12 and corresponds one-to-one with each of the light source components 121. The light distribution element 122 can be any one or a combination of a light guide plate, lens, reflector, and reflector cup, selected according to the application scenario. The light emitted from the light source module 12 is emitted from the first light outlet 114 after being controlled by the light distribution element 122. This arrangement ensures that the light emitted from the light source module 12 is controlled by the light distribution element 122 and emitted from the first light outlet 114, further enhancing the uniformity of the illumination effect. The use of at least two light source components 121 and corresponding light distribution elements 122 effectively improves the brightness of the light.

In this embodiment, the side-emitting lighting device 100 effectively improves the lighting brightness by placing two or more light source components 121 on different sides of the light source installation space 115. The light emitted by the light source module 12 is regulated by the light distribution component 122 and then emitted from the first light outlet 114, effectively reducing light waste, improving light energy utilization, and achieving a highly efficient and uniform lighting effect. In addition, the number and layout of the light source components 121, as well as the shape and material of the light distribution component 122, can be adjusted according to specific needs to flexibly control the lighting effect and meet the lighting requirements of different environments.

Furthermore, the side-emitting lighting device 100 also includes a light-emitting element 13. In this embodiment, the light-emitting element 13 is a diffuser plate, but in other embodiments it can be other equivalent components, which are not limited here. The light-emitting element 13 is disposed at the first light-emitting port 114, abutting against the top wall 111 and the bottom wall 112, and located inside the frame 113. The light emitted by the light source module 12 is emitted through the light-emitting element 13 after being acted upon by the light distribution element 122. The light-emitting element 13 homogenizes the light before emission, improving the uniformity of the emitted light.

Furthermore, each light source assembly 121 includes a light source substrate 1211 and a plurality of light-emitting elements 1212 disposed on the light source substrate 1211. The plurality of light-emitting elements 1212 can be independently controlled. By controlling the lighting state of the light-emitting elements 1212, an illuminated light-emitting area and an unilluminated non-light-emitting area are formed at the first light-emitting port 114. There is a light/shadow transition zone between the light-emitting area and the non-light-emitting area. This simulates sunlight shining from one side, illuminating one side of the window sill, while forming a dark side on the other side of the window sill, making the display effect more realistic. The light-emitting area and the non-light-emitting area are connected in a ring and together form an annular surface on the outer periphery of the first light-emitting port 114. The light/shadow transition zone is located at the junction of the light-emitting area and the non-light-emitting area. The function of the light/shadow transition zone is to form a light-dark boundary area between the light-emitting area and the non-light-emitting area. It can be a continuously changing area from bright to dark, or it can be a clear dividing line.

In a preferred embodiment, each light source assembly 121 includes a light source substrate 1211 partially surrounding the first light outlet 114 and a plurality of light-emitting elements 1212 disposed on the light source substrate 1211. The light-emitting elements 1212 are configured to form an illuminated light-emitting area on the first light outlet 114, and an unilluminated non-light-emitting area on the first light outlet 114 not surrounded by the light source assembly 121. A light/shadow transition zone exists between the light-emitting area and the non-light-emitting area. This arrangement simulates sunlight entering from one side, illuminating one side of the window sill, while forming a dark side on the other side of the window sill, making the display effect more realistic. The light-emitting area and the non-light-emitting area are circumferentially connected and together form an annular surface on the outer periphery of the first light outlet 114. The light/shadow transition zone is located at the junction of the light-emitting area and the non-light-emitting area. The function of the light/shadow transition zone is to form a light-dark boundary area between the light-emitting area and the non-light-emitting area. It can be a continuously changing area from bright to dark, or it can be a clear dividing line.

In other embodiments, the side-emitting lighting device 100 includes a light-shielding member, which, together with the light source module 12, surrounds the first light outlet 114. The light source module 12 is configured to form an illuminated light-emitting area on the first light outlet 114, and the light-shielding member is configured to form an unilluminated non-light-emitting area on the first light outlet 114. A light/shadow transition zone exists between the light-emitting area and the non-light-emitting area. This arrangement simulates sunlight entering from one side, illuminating one side of the window sill while creating a dark area on the other side, making the display effect more realistic. The light-emitting area and the non-light-emitting area are connected circumferentially and together form an annular surface on the outer periphery of the first light outlet 114. The light/shadow transition zone is located at the junction of the light-emitting area and the non-light-emitting area. The function of the light/shadow transition zone is to form a light-dark boundary area between the light-emitting area and the non-light-emitting area. This can be a continuously changing area from bright to dark, or it can be a distinct dividing line.

The light source assembly 121 includes a light source substrate 1211 and at least two different colored light-emitting elements 1212 disposed on the light source substrate 1211. The light-emitting elements 1212 of the at least two different colors are arranged sequentially and cyclically on the light source substrate 1211, making the emitted light color more uniform. The light source assembly 121 can control the light-emitting elements 1212 to emit different colors through programming or intelligent control. The light intensity and duration of different colored light-emitting elements can be easily adjusted to simulate the color of sunlight at different times, thereby creating various dynamic light and shadow changes and realizing dynamic light effects.

Example 1

In this embodiment 1, the light source module 12 includes a light source assembly 121 and a light distribution element 122. Further, the light source assembly 121 includes a first light source assembly and a second light source assembly, one of which is disposed on the top wall 111, and the other on the bottom wall 112. The light distribution element 122 includes a first light distribution element and a second light distribution element, which are respectively disposed on the first light source assembly and the second light source assembly.

Specifically, the first light source assembly is mounted on the top wall 111, and the first light distribution element 1 is a reflector, specifically a reflector cup. Light emitted from the first light source assembly is refracted by the reflector cup, with some light rays exiting towards the light-emitting element 13 and others towards the frame 113. A reflector 14 is provided on the frame 113 to reflect the portion of light rays that are directed towards it. The light rays reflected by the reflector 14 exit towards the light-emitting element 13. Specifically, the reflector 14 is located on the side of the frame 113 facing the first light-emitting port 114. Light emitted from the light source assembly 121, after being processed by the light distribution element 122, has some light rays directly exiting through the first light-emitting port 114, and others exiting towards the frame 113 and then being reflected by the reflector 14 before exiting from the first light-emitting port 114. In other embodiments, the reflector 14 can be a reflective film, i.e., a highly reflective material is sprayed onto the frame 113. This is not a limitation.

The reflector cup includes a small opening covering the first light source assembly and a larger opening away from it. The small opening effectively focuses the light emitted by the first light source assembly. Due to the focusing effect of the small opening, the light is concentrated before it exits, thus improving light utilization and reducing energy waste. This design allows the luminaire to emit brighter, more concentrated light at the same power, improving the lighting effect. The larger opening of the reflector cup reflects the light and increases the light emission angle. The larger opening design allows the light to exit at a wider angle after reflection, thereby expanding the illumination range and reducing shadow areas. This design makes the lighting effect of the luminaire 200 more uniform, avoiding lighting dead zones caused by uneven light distribution. The combination of the reflector cup's focusing and reflecting effects optimizes the distribution and projection of light. By adjusting the shape, material, and surface treatment of the reflector cup, precise control of the light direction can be achieved, allowing the light to exit along a predetermined path and angle to meet different lighting needs. In this embodiment 1, a prism sheet is covered at the end of the reflector cup away from the first light source assembly. The prism sheet is configured to refract some of the light emitted from the light source 1212 that has not been refracted by the reflector cup, so that the light emitted by the prism sheet is refracted and emitted toward the light emitting component 13 or toward the reflector 14 on the frame 113, thereby improving the utilization rate of the light emitted by the light source module 12.

The second light source assembly is mounted on the bottom wall 112, and the second light distribution element 2 is a lens. The lens is connected to the inner side of the light source substrate 1211 and covers the light-emitting element 1212. The light emitted from the light-emitting element 1212 is incident on the light-incident surface of the lens, refracted at the light-incident surface, and enters the lens under the condition of satisfying Snell's law. Then it is refracted at the light-emitting surface, and after exiting the lens, it passes through the light-emitting element 13 to achieve uniform light emission.

Example 2

The above-described embodiment 1 provides a side-emitting lighting device 100 applied to a lamp 200. The principle of this embodiment 2 is the same as that of embodiment 1, except that the installation position of the light source assembly 121 is different. Therefore, only the structural differences are described here, and the same parts will not be repeated. One of the first light source assembly and the second light source assembly is disposed on the top wall 111 or the bottom wall 112, and the other is disposed on the frame 113.

The light emitted by the light source components mounted on the bottom wall 112 and the frame 113 is controlled by the light distributor 122 and then emitted from the first light outlet 114, forming a surround lighting effect, which is particularly suitable for scenes that require creating a spatial atmosphere. The light source component 121 on the bottom wall 112 can project light downwards, while the light source component 121 on the frame 113 can project light to the sides and upwards, illuminating the edges of the lamp. This complements the light source component 121 on the bottom wall 112, enhancing the sense of space and layering, thus forming a three-dimensional lighting effect.

The light source component 121 mounted on the top wall 111 emits light primarily upwards, illuminating the upper part of the luminaire 200 or the ceiling. This complements the light source component 121 on the frame 113, resulting in a more complete lighting effect for the entire luminaire 200. The light source components 121 on the top wall 111 and the frame 113 can work together to distribute light more evenly around the luminaire 200, reducing shadow areas and significantly improving the overall brightness of the luminaire, making it particularly suitable for lighting scenarios requiring high brightness.

Example 3

The above-described embodiment 1 provides a side-emitting lighting device 100 applied to a lamp 200. The principle of this embodiment 3 is the same as that of embodiment 1, except that the structure of the housing 11 is different. Therefore, only the structural differences will be described here, and the same parts will not be repeated.

In this embodiment 3, the housing 11 is at least partially translucent. The housing 11 also includes a second light-emitting port disposed opposite to or adjacent to the first light-emitting port 114. The light emitted by the light source module 12 is emitted through the light distribution element 122 and then through the first light-emitting port 114 and the second light-emitting port respectively, achieving light emission from both the inside and outside. The light passing through the housing 11 not only illuminates its external space but also provides sufficient light to the internal space, creating a unique light and shadow effect. This design is particularly suitable for occasions requiring simultaneous attention to both internal and external ambient lighting, such as display cases and shop windows, effectively showcasing items while providing a comfortable visual experience for the observer.

In summary, the side-emitting lighting device 100 of this application effectively improves lighting brightness by separately arranging two or more light source components 121 on different sides of the light source installation space 115. A light distribution element 122 is provided in the light output path of the light source module 12, and the light distribution element 122 is arranged in a one-to-one correspondence with the light source component 121. The light emitted by the light source module 12 is regulated by the light distribution element 122 and then emitted from the first light outlet 114, effectively reducing light waste, improving light energy utilization, and achieving a highly efficient and uniform lighting effect. Furthermore, the number and layout of the light source components 121, as well as the shape and material of the light distribution element 122, can be adjusted according to specific needs, thereby flexibly controlling the lighting effect and meeting the lighting requirements of different environments.

The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims (10)

A side-emitting lighting device, comprising: The housing (11) includes a top wall (111) and a bottom wall (112) disposed opposite to each other, and a frame (113) connecting the top wall (111) and the bottom wall (112). A light source mounting space (115) is formed between the top wall (111), the bottom wall (112) and the frame (113), and a first light outlet (114) is provided on the side of the light source mounting space (115) away from the frame (113). The light source module (12) includes at least two light source components (121), and the at least two light source components (121) are disposed on different sides of the light source mounting space (115); The light distribution element (122) is disposed in the light output path of the light source module (12) and is disposed in a one-to-one correspondence with the light source assembly (121). The light emitted by the light source module (12) is emitted from the first light output port (114) after being acted upon by the light distribution element (122). According to claim 1, the side-emitting lighting device further includes a light-emitting element (13), which is disposed at the first light-emitting port (114), abuts against the top wall (111) and the bottom wall (112), and is located inside the frame (113). The light emitted by the light source module (12) is emitted through the light-emitting element (13) after being acted upon by the light distribution element (122). According to claim 2, the side-emitting lighting device comprises a first light source assembly and a second light source assembly, one of the first light source assembly and the second light source assembly being disposed on the top wall (111) and the other being disposed on the bottom wall (112), and the light distribution element (122) comprises a first light distribution element and a second light distribution element, the first light distribution element and the second light distribution element being respectively disposed on the first light source assembly and the second light source assembly; or, The light source module (12) includes a first light source component and a second light source component. One of the first light source component and the second light source component is disposed on the top wall (111) or the bottom wall (112), and the other is disposed on the frame (113). The light distribution element (122) includes a first light distribution element and a second light distribution element. The first light distribution element and the second light distribution element are respectively covered on the first light source component and the second light source component. According to claim 2, the side-emitting lighting device (100) further includes a reflector (14), which is disposed on the side of the frame (113) facing the first light outlet (114). After the light emitted by the light source assembly (121) is acted upon by the light distribution member (122), part of the light is directly emitted through the first light outlet (114), and part of the light is emitted towards the frame (113) and then reflected by the reflector (14) before being emitted from the first light outlet (114). According to claim 1, the side-emitting lighting device is configured to be at least partially transparent, and the housing (11) further includes a second light-emitting port disposed opposite to or adjacent to the first light-emitting port (114). The light emitted by the light source module (12) is emitted through the light distribution member (122) and then emitted through the first light-emitting port (114) and the second light-emitting port respectively. According to claim 1, the side-emitting lighting device is wherein the light distribution element (122) is any one or a combination of a light guide plate, a lens, a reflector, and a reflector cup. According to claim 1, the side-emitting lighting device, wherein, Each of the light source components (121) includes a light source substrate (1211) and a plurality of light-emitting elements (1212) disposed on the light source substrate (1211). The plurality of light-emitting elements (1212) can be independently controlled. By controlling the lighting state of the light-emitting elements (1212), an illuminated light-emitting area and an unilluminated non-light-emitting area are formed at the first light-emitting port (114), and a light/shadow transition area is provided between the light-emitting area and the non-light-emitting area; or, Each of the light source components (121) includes a light source substrate (1211) partially surrounding the first light outlet (114) and a plurality of light-emitting elements (1212) disposed on the light source substrate (1211). The light-emitting elements (1212) are configured to form an illuminated light-emitting area on the first light outlet (114) and an unilluminated non-light-emitting area on the first light outlet (114) not surrounded by the light source components (121). A light/shadow transition area exists between the light-emitting area and the non-light-emitting area; or, The side-emitting lighting device (100) includes a light-shielding member, which is arranged together with the light source module (12) around the first light outlet (114). The light source module (12) is configured to form an illuminated light-emitting area on the first light outlet (114), and the light-shielding member is configured to form an unilluminated non-light-emitting area on the first light outlet (114). There is a light/shadow transition zone between the light-emitting area and the non-light-emitting area. According to claim 1, the side-emitting lighting device, wherein the light source assembly (121) includes a light source substrate (1211) and at least two different colored light-emitting elements (1212) disposed on the light source substrate (1211), and the at least two different colored light-emitting elements (1212) are arranged in a cyclic manner on the light source substrate (1211). A lighting fixture, comprising: A surface-emitting lighting device (110) includes a main light source assembly (1101), the main light source assembly (1101) being configured to emit light outward and having a main light source emitting surface (1102), and, The side-emitting lighting device (100) as described in any one of claims 1 to 8 is arranged around the surface-emitting lighting device (110), and the first light outlet (114) is connected to the light-emitting surface (1102) of the main light source and extends in a direction away from the light-emitting surface (1102) of the main light source. According to claim 9, the lighting fixture further includes a light-emitting plate (1103) disposed on the light-emitting surface (1102) of the main light source, wherein the side of the light-emitting plate (1103) facing away from the main light source assembly (1101) is a mirror (1104), and the light emitted by the side-emitting lighting device (100) is at least partially projected onto the mirror (1104) after passing through the first light-emitting port (114) to form a virtual image on the light-emitting surface (1102) of the main light source.