CN115539901A - Surface light source light-emitting structure and simulated sky lighting device - Google Patents

Abstract

The invention provides a surface light source light-emitting structure and a simulated sky lighting device, wherein the surface light source light-emitting structure comprises: the light-transmitting structural part is provided with a first surface, a second surface, a first side part and a second side part, wherein the first surface and the second surface are oppositely arranged, the first side part and the second side part are connected with the first surface and the second surface, and the first side part is provided with a first light source installation part; the light-emitting device is arranged on the first light source installation part, the light-transmitting structural part comprises a plurality of light guide pieces which are arranged between the first surface and the second surface at intervals along the first light incidence direction, the light guide pieces comprise first reflection inclined planes facing the first light incidence direction, and the first reflection inclined planes are used for guiding at least part of first light rays incident along the first light incidence direction to the second surface; the light-transmitting plate comprises a light blocking area and a light emitting area, and the light blocking area is used for preventing at least part of light from being emitted from the light emitting area. The technical scheme of this application has solved the relatively poor problem of simulated sky visual effect of lamps and lanterns among the correlation technique effectively.

Description

Surface light source light-emitting structure and simulated sky lighting device

Technical Field

The invention relates to the technical field of illumination, in particular to a light-emitting structure of a surface light source and a simulated sky illumination device.

Background

With the social progress and the improvement of the quality of life, people pay more and more attention to the quality of life and pursue a healthy living environment. Under the circumstances, a new lamp form, namely a simulated sky lamp, or a blue sky lamp, a sky lamp, and the like, begins to appear in the household lighting industry in recent years. The main characteristic of the simulated sky lamp is the simulated sky visual effect.

In the related art, a light source in a blank light is obliquely irradiated to a light outlet, and light rays irradiated to the light outlet need to be parallel as much as possible, so that a simulated sky visual effect can be ensured.

Disclosure of Invention

The invention mainly aims to provide a light-emitting structure of a surface light source and a sky simulation lighting device, and aims to solve the problem that a lamp in the related art is poor in sky simulation visual effect.

In order to achieve the above object, according to one aspect of the present invention, there is provided a light emitting structure of a surface light source, including: the light-transmitting structural part is provided with a first surface, a second surface, a first side part and a second side part, wherein the first surface and the second surface are oppositely arranged, the first side part and the second side part are connected with the first surface and the second surface, and the first side part is provided with a first light source installation part; the light-emitting device is arranged on the first light source installation part, the light-transmitting structural part comprises a plurality of light guide pieces which are arranged between the first surface and the second surface at intervals along the first light incidence direction, the light guide pieces comprise first reflection inclined planes facing the first light incidence direction, and the first reflection inclined planes are used for guiding at least part of first light rays incident along the first light incidence direction to the second surface; the light-transmitting plate comprises a light blocking area and a light emitting area, and the light blocking area is used for preventing at least part of light from being emitted from the light emitting area.

Furthermore, a light condensation structure is arranged on the second surface and used for condensing emergent light rays of the second surface, wherein the light condensation structure is a plurality of arc-shaped bulges which are arranged on the second surface and protrude outwards; or the light condensation structure is a plurality of Fresnel lens structures arranged on the second surface; or the light-gathering structure is a rotary structure.

Furthermore, a plurality of light guide member arrays are arranged, a plurality of light gathering structure arrays are arranged, and each first reflection inclined plane corresponds to one light gathering structure, or each first reflection inclined plane corresponds to a plurality of light gathering structures.

Furthermore, the light-emitting area is arranged corresponding to the plurality of light-gathering structures, and/or the light-transmitting plate is positioned between the light-gathering structures and the focuses of the light-gathering structures.

Furthermore, the first reflection inclined plane has a certain light transmittance, and the light transmittance of the first reflection inclined planes of the plurality of light guide pieces is gradually smaller along the first light incidence direction; and/or the first reflection inclined planes have certain reflectivity, and the reflectivity of the first reflection inclined planes of the light guide pieces is gradually increased along the first light incidence direction.

Furthermore, the plurality of light guide members are a plurality of first light reflecting grooves, the plurality of first light reflecting grooves are arranged on the first surface and are recessed into the light-transmitting structural member, and the first reflecting inclined plane is a first inclined plane groove wall of the plurality of first light reflecting grooves; the minimum distance between the first inclined groove walls and the second surface is gradually reduced along the first light incidence direction, and/or the heights of the first inclined groove walls are gradually increased along the light incidence direction, and/or the inclination angles of the first inclined groove walls are the same; and/or the length difference of two adjacent first inclined groove walls is the same along the first light incidence direction.

Further, the light-transmitting medium is accommodated in the first light reflecting groove, and the refractive index of the light-transmitting structural member is greater than that of the light-transmitting medium; and/or the inner surface of the first light reflecting groove is provided with a light reflecting coating.

Further, the second side has the second light source installation department, and a plurality of leaded light spares still are provided with a plurality of second reflection of light grooves, and a plurality of second reflection of light grooves set up in the first surface, and a plurality of second reflection of light grooves and a plurality of first reflection of light groove are reverse to be set up, and every second reflection of light groove all has interconnect's second inclined plane cell wall and the straight face cell wall of second.

Further, the included angle between the first inclined groove wall and the second inclined groove wall is between 80 degrees and 100 degrees.

According to another aspect of the invention, there is provided a simulated sky lighting device comprising: the direct light source comprises a light-emitting structure of the surface light source and a light-emitting unit positioned at the side part of the light-emitting structure of the surface light source; the scattering plate is positioned at the downstream of the direct area light source and used for converting emergent rays of the direct area light source into first diffused light and second transmitted light to be emitted outwards; the light-emitting structure of the surface light source is the light-emitting structure of the surface light source.

By applying the technical scheme of the invention, the light-transmitting structural part is provided with the first surface, the second surface, the first side part and the second side part, the first side part is provided with the first light source installation part, and the light-emitting device is arranged on the first light source installation part. The light guide part is arranged between the first surface and the second surface and comprises a first reflection inclined plane facing to the first light incidence direction, and the first reflection inclined plane is used for guiding at least part of first light rays incident along the first light incidence direction to the second surface. The light-transmitting plate comprises a light blocking area and a light emergent area, and the light blocking area is used for preventing at least part of light from being emitted from the light emergent area. Through foretell setting, the region of being in the light can be realized sheltering from light, goes out the light zone and can realize the printing opacity, and the light that light emitting device sent is partly sheltered from by the region of being in the light, and the light zone of going out can be seen through to the rest, makes the light of great angle can be sheltered from by the region of being in the light like this to can prevent that stray light from going out the light zone and passing through, and then can improve the effect in simulation sky. Therefore, the technical scheme of the application effectively solves the problem that the simulated sky vision effect of the lamp in the related art is poor.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic top view illustrating a first embodiment of a light exit structure of a surface light source according to the present invention;

fig. 2 shows a perspective structure diagram of the light-transmitting plate of the light-emitting structure of the surface light source in fig. 1;

fig. 3 is a schematic cross-sectional view illustrating a light emitting structure of the surface light source of fig. 1;

FIG. 4 shows a schematic view of the light of FIG. 1 passing through a light-transmitting panel and an arcuate protrusion;

FIG. 5 shows the ray diagram of FIG. 4;

FIG. 6 shows a schematic view of the direction of refraction of the light rays of FIG. 1;

fig. 7 is a schematic cross-sectional view showing a second embodiment of a light exit structure of a surface light source according to the present invention;

fig. 8 is a schematic top view illustrating a light emitting structure of the surface light source of fig. 7;

fig. 9 is a perspective view of the light-transmitting plate of the light-emitting structure of the surface light source of fig. 7.

Wherein the figures include the following reference numerals:

10. a light-transmitting structural member; 11. a first surface; 12. a second surface; 13. a first side portion; 14. a second side portion; 20. a light emitting device; 30. a light guide; 31. a first reflective slope; 311. a first sloped slot wall; 312. a first straight slot wall; 32. a first light reflecting groove; 33. a second reflective groove; 331. a second sloped slot wall; 332. a second straight groove wall; 40. a light-transmitting plate; 41. a light blocking area; 42. a light emitting area; 50. a light-gathering structure; 51. an arc-shaped bulge; 60. a diffuser plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 6, in the first embodiment, the light emitting structure of the surface light source includes: a light-transmitting structure 10 and a light-transmitting panel 40. The light-transmitting structural member 10 has a first surface 11 and a second surface 12 which are oppositely arranged, and a first side portion 13 and a second side portion 14 which are connected with the first surface 11 and the second surface 12, wherein the first side portion 13 is provided with a first light source mounting portion; the light emitting device 20 is disposed on the first light source installation portion, the light transmissive structure 10 includes a plurality of light guide members 30 disposed between the first surface 11 and the second surface 12 at intervals along the first light incident direction, the plurality of light guide members 30 include a first reflection inclined plane 31 facing the first light incident direction, and the first reflection inclined plane 31 is configured to guide at least a portion of the first light incident along the first light incident direction to the second surface 12. The light-transmitting plate 40 includes a light blocking region 41 and a light exit region 42, and the light blocking region 41 prevents at least part of light from exiting from the light exit region 42.

With the technical solution of the present embodiment, the light-transmitting structural member 10 has a first surface 11, a second surface 12, a first side portion 13 and a second side portion 14, the first side portion 13 is provided with a first light source mounting portion, and the light-emitting device 20 is provided on the first light source mounting portion. A light guide member 30 is disposed between the first surface 11 and the second surface 12, the light guide member 30 includes a first reflection inclined plane 31 facing the first light incident direction, and the first reflection inclined plane 31 is used for guiding at least a portion of the first light incident along the first light incident direction to the second surface 12. The light-transmitting plate 40 includes a light blocking region 41 and a light emitting region 42, and the light blocking region 41 is configured to prevent at least a portion of light from exiting from the light emitting region 42. Through the above arrangement, the light blocking region 41 can block light, the light emitting region 42 can realize light transmission, a part of light emitted by the light emitting device 20 is blocked by the light blocking region 41, and the rest of the light can penetrate through the light emitting region 42, so that the light with a larger angle can be blocked by the light blocking region 41, thereby preventing stray light from penetrating from the light emitting region 42, and further improving the effect of simulating the sky. Therefore, the technical scheme of the embodiment effectively solves the problem of poor sky simulation visual effect of the lamp in the related art.

As shown in fig. 1 to 6, in the first embodiment, the first surface 11 and the second surface 12 are arranged parallel to each other, and the above arrangement can ensure the light emitting effect.

As shown in fig. 1 to fig. 6, in the first embodiment, a light-gathering structure 50 is disposed on the second surface 12, and the light-gathering structure 50 is used for gathering light emitted from the second surface 12, where the light-gathering structure 50 is a plurality of arc-shaped protrusions 51 disposed on the second surface 12 and protruding outward; or the light-gathering structure 50 is a plurality of fresnel lens structures disposed on the second surface 12; or the light focusing structure 50 is a revolution structure. The light condensing structure 50 is provided to further ensure the irradiation of light and to avoid the loss of light. The diverging effect of the arc-shaped protrusions 51 on the incident collimated light can increase the chances of intersection and mixing of the light emitted from the arc-shaped protrusions 51 adjacent to the light emitting surface side of the light-transmitting structural member 10, and the improvement of the illuminance distribution uniformity of the light emitted from the arc-shaped protrusions 51 on the rayleigh scattering plate is facilitated.

Specifically, in the present embodiment, the arc surface of the arc protrusion 51 may be a spherical surface or an aspherical surface.

Of course, each first inclined groove wall 311 is disposed corresponding to a plurality of arc-shaped protrusions 51, so that the disposition of the arc-shaped protrusions 51 can be reduced, and the difficulty of processing can be reduced.

As shown in fig. 1 to 6, in the first embodiment, the minimum distance between the plurality of first reflection inclined planes 31 spaced apart along the first light incident direction and the second surface 12 gradually decreases along the first light incident direction. That is, the height of the light guide member 30 is higher and higher or is closer to the second surface 12, so as to avoid being blocked by the light guide member 30 of the previous stage, and the above arrangement enables the first light to be reflected by the plurality of first reflection slopes 31, that is, the emergent light of the light emitting device 20 or the light source can be transmitted to the plurality of light guide members 30 by one stage and reflected and emitted through the second surface 12, thereby realizing the conversion of the point light source or the line light source to the surface light source. Specifically, the heights of the plurality of first reflection inclined planes 31 may gradually increase along the first light incident direction.

As shown in fig. 1 to 6, in the first embodiment, the light guides 30 are arranged in an array, the light collecting structures 50 are arranged in an array, and each first reflective inclined plane 31 is disposed corresponding to one light collecting structure 50, or each first reflective inclined plane 31 is disposed corresponding to a plurality of light collecting structures 50. The light emitting effect can be ensured by the arrangement.

As shown in fig. 1 to fig. 6, in the first embodiment, the light exiting region 42 is disposed corresponding to a plurality of light condensing structures 50, and/or the light transmissive plate 40 is located between the light condensing structures 50 and the focal points of the light condensing structures 50. The above arrangement enables more light to pass out of the light exit region 42, which can improve the irradiation effect.

As shown in fig. 1 to 6, in the first embodiment, the first reflective slopes 31 have a certain light transmittance, and the light transmittance of the first reflective slopes 31 of the light guide members 30 is gradually smaller along the first light incident direction; and/or the first reflection slopes 31 have a certain reflectivity, and the reflectivity of the first reflection slopes 31 of the light guide members 30 gradually increases along the first light incident direction. The arrangement can effectively reflect part of light to the second surface 12 for emergence when passing through the first reflecting inclined plane 31, and part of light continues to propagate to the next-stage light guide part 30 through the first reflecting inclined plane 31, so that a point light source or a line light source is converted into a surface light source for emergence.

As shown in fig. 1 to 6, in the first embodiment, the light guide members 30 are a plurality of first light reflecting grooves 32, the plurality of first light reflecting grooves 32 are disposed on the first surface 11 and are recessed toward the interior of the light transmissive structure 10, the first reflecting slope 31 is a first slope groove wall 311 of the plurality of first light reflecting grooves 32, and the first light reflecting groove 32 further includes a first straight groove wall 312; wherein, the minimum distance between the plurality of first inclined groove walls 311 and the second surface 12 gradually decreases along the first light incident direction, and/or the height of the plurality of first inclined groove walls 311 gradually increases along the light incident direction, and/or the inclination angles of the plurality of first inclined groove walls 311 are the same; and/or the length difference of two adjacent first inclined groove walls 311 is the same along the first light incident direction. The inclination angles of the first inclined groove walls 311 are the same, so that the inclination angles of the reflected light rays can be ensured to be close, and the collimation rate of the emergent light rays can be improved. The height difference between the adjacent first inclined groove walls 311 is the same, so that the same reflection area of each level of the light guide member 30, that is, the same quantity of light reflected by each level of the light guide member, can be ensured, and thus, the uniformity of the light emitted from the second surface 12 can be ensured. When the inclination angles of the first inclined groove walls 311 are the same, the length difference of the first inclined groove walls 311 is the same, and it can also be ensured that the area difference of each level of the light guide member 30 is the same, that is, the reflection area is the same, and it can be ensured that the light emitted from the second surface 12 is uniform.

As shown in fig. 1 to 6, in the first embodiment, the first reflective groove 32 is disposed to effectively reduce the processing difficulty, and since the refractive index of air is smaller than that of the light guide 30, when the incident light passes through the interface between the air and the light guide 30, i.e., the first inclined groove wall 311, the incident light is totally reflected, so as to achieve the purpose of turning the incident light to the second surface 12 for exiting.

As shown in fig. 1 to 6, in the first embodiment, the light-transmitting medium is accommodated in the first light-reflecting groove 32, and the refractive index of the light-transmitting structural member 10 is greater than that of the light-transmitting medium; and/or the inner surface of the first light reflecting groove 32 is provided with a light reflecting coating. The above arrangement enables better reflection of light. Specifically, in order to enhance the structural strength of the light-transmitting structural member 10, a light-transmitting medium may be accommodated in the first reflective groove 32, wherein, in order to realize total reflection of the light at the first reflective inclined plane 31, preferably, the refractive index of the light-transmitting structural member 10 is greater than the refractive index of the light-transmitting medium. I.e. when light is directed from the optically dense medium to the optically thinner medium, total emission is relatively easy to occur. Thereby improving light utilization and ensuring that more light is reflected and exits the second surface 12. In order to further improve the light utilization rate, a reflective coating may be further disposed on the inner surface of the first reflective groove 32 or the first reflective inclined surface 31.

As shown in fig. 4 and 5, in the first embodiment, the central point of the arc-shaped protrusion 51 is assumed to be point a, a section is taken from point a to obtain a generatrix arc ab or arc ac of the arc-shaped protrusion 51, the generatrix (arc ab or arc ac) is rotated by 360 degrees to obtain the arc surface of the arc-shaped protrusion 51, and the effect of the arc surface bc is analyzed by taking two boundary light rays bd and cf as examples. Collimated light bd, cf can take place the light deflection after arc bc, and light bd is deflected after arc bc to be light bo, and light cf is deflected after arc bc to be light co, and light ao that is located the protruding 51 center pin of arc is the same with original light ae direction through light ao after arc bc, and light bo, light ao, light co intersect at the o point. After point o, ray bo keeps progressing direction oi, ray ao keeps progressing direction oh, and ray co keeps progressing direction og. Therefore, after the point o of the junction, the outgoing rays oi, oh, and og diverge corresponding to the incident collimated rays bd, ae, and cf.

Specifically, as shown in fig. 4 and 5, in the first embodiment, the arc surface of the arc protrusion 51 may be a spherical surface, or may be an aspheric surface. The distribution density of the arc-shaped protrusions 51 is the same as that of the light guide member 30, and the arc-shaped protrusions 51 are just above the first light reflecting grooves 32, which helps the light reflected from the first light reflecting grooves 32 to be efficiently emitted from the arc-shaped protrusions 51, thereby improving the optical efficiency.

As shown in fig. 7 to 9, in the second embodiment, the second side portion 14 has a second light source installation portion, and the light guide member 30 further includes a second reflection inclined surface for guiding at least a part of the second light incident along the second incident light direction to the first surface 11. The minimum distance between the plurality of second reflection slopes and the first surface 11 gradually decreases along the second light incident direction, and/or the first reflection slope 31 and the second reflection slope are located on two sides of the light guide member 30, wherein the minimum distance between the light guide member 30 and the second surface 12 gradually decreases along the first light incident direction, and the minimum distance between the light guide member 30 and the first surface 11 gradually decreases along the second light incident direction. The above arrangement enables simultaneous irradiation of the first side portion 13 and the second side portion 14. This makes it possible to improve the reflection effect of the light-transmitting structure 10 and thus to ensure the illumination effect. In particular, the above arrangement enables double-sided illumination.

As shown in fig. 7 to 9, in the second embodiment, the second side portion 14 has a second light source mounting portion, the plurality of light guides 30 are further provided with a plurality of second light reflecting grooves 33, the plurality of second light reflecting grooves 33 are provided on the first surface 11, the plurality of second light reflecting grooves 33 and the plurality of first light reflecting grooves 32 are oppositely arranged, and each of the second light reflecting grooves 33 has a second inclined groove wall 331 and a second straight groove wall 332 connected to each other. The above arrangement enables irradiation in a plurality of directions. Specifically, the light-emitting area of the second surface 12 is increased, and under the condition that the thickness of the light-transmitting structural member 10 is constant, the maximum height of the light-guiding member 30 is limited, so that the number of levels of the light-guiding members 30 arranged in one level is limited, and the light-emitting area is limited, therefore, by symmetrically arranging the second light sources on the second side portion 14 and symmetrically arranging the second light-reflecting grooves 33, the light-emitting area of the light-transmitting structural member 10 can be doubled. Of course, light extraction in multiple directions can also be realized.

It should be noted that, the reverse arrangement refers to left-right reverse arrangement or left-right symmetrical arrangement, so that the length of the light-transmitting structural member 10 is increased as much as possible while the thickness of the light-transmitting structural member 10 is not increased, the light-emitting area is increased, and the technical problem that the size of the sky lamp in the prior art is small is solved.

As shown in fig. 7 to 9, in the second embodiment, the included angle between the first sloped slot wall 311 and the second sloped slot wall 331 is between 80 ° and 100 °. The above arrangement enables angular refraction.

According to another aspect of the present application, there is provided a simulated sky lighting device, the simulated sky lighting device of the present embodiment comprising: the direct light source comprises a light-emitting structure of the surface light source and a light-emitting unit positioned at the side part of the light-emitting structure of the surface light source; a diffusion plate 60 located downstream of the direct surface light source for converting the emergent light of the direct surface light source into a first diffused light and a second transmitted light to be emitted outward; the light-emitting structure of the surface light source is the light-emitting structure of the surface light source. The surface light source light-emitting structure can improve the irradiation effect, and the scattering plate is arranged, so that the effect of simulating sky irradiation can be improved, and the simulated sky lighting device with the surface light source light-emitting structure also has the advantages.

The color temperature of the second transmitted light is lower than the color temperature of the first diffused light, thereby simulating a real blue sky effect. When the light emitting device 20 irradiates from the first light source installation part, the first light is reflected to the second surface 12 by the light guide member 30, specifically, the first light is reflected under the action of the first reflection inclined surface 31, so that the second surface 12 can be fully distributed with the first light, the conversion from a point light source or a line light source to a surface light source is realized, and the size and the thickness are thinner; compared with the prior art that the light source can only be pulled far as possible to cover a larger light-emitting area, the simulated sky lighting lamp is thinner. Thus, illumination can be effectively realized, the illumination effect can be guaranteed, rayleigh scattering can be realized under the action of the scattering plate 60, and the illumination effect of the simulated sky can be better realized. The thickness of the skylight can be reduced compared to the prior art.

The diffuser plate 60 is a rayleigh diffuser plate.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; below". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A light-emitting structure of a surface light source, comprising:

a light transmissive structure (10), the light transmissive structure (10) having a first surface (11) and a second surface (12) disposed opposite to each other, and a first side portion (13) and a second side portion (14) connected to the first surface (11) and the second surface (12), the first side portion (13) having a first light source mounting portion; the light emitting device (20) is arranged on the first light source installation part, the light-transmitting structural part (10) comprises a plurality of light guide pieces (30) which are arranged between the first surface (11) and the second surface (12) at intervals along a first light incidence direction, the light guide pieces (30) comprise first reflection inclined planes (31) facing the first light incidence direction, and the first reflection inclined planes (31) are used for guiding at least part of first light rays incident along the first light incidence direction to the second surface (12);

the light-transmitting plate (40) comprises a light blocking area (41) and a light emitting area (42), and the light blocking area (41) is used for preventing at least part of light from being emitted from the light emitting area (42).

2. A light-emitting structure of a surface light source as claimed in claim 1, wherein the second surface (12) is provided with a light-gathering structure (50), the light-gathering structure (50) is used for gathering the emergent light of the second surface (12), wherein,

the light gathering structure (50) is a plurality of arc-shaped bulges (51) which are arranged on the second surface (12) and protrude outwards; or the light-gathering structure (50) is a plurality of Fresnel lens structures arranged on the second surface (12); or the light-gathering structure (50) is a rotary structure.

3. The light exit structure of a surface light source as claimed in claim 2, wherein a plurality of the light guides (30) are arranged in an array, a plurality of the light collecting structures (50) are arranged in an array, and each of the first reflecting slopes (31) is disposed corresponding to one of the light collecting structures (50), or each of the first reflecting slopes (31) is disposed corresponding to a plurality of the light collecting structures (50).

4. The light exit structure of a surface light source as claimed in claim 2, wherein the light exit region (42) is disposed corresponding to a plurality of the light gathering structures (50), and/or the light transmissive plate (40) is located between the light gathering structures (50) and the focal points of the light gathering structures (50).

5. The light exit structure of a surface light source as claimed in claim 1, wherein the first reflecting slope (31) has a light transmittance, and the light transmittance of the first reflecting slope (31) of the plurality of light guide members (30) is gradually smaller along the first light entrance direction; and/or the first reflection inclined plane (31) has a certain reflectivity, and the reflectivity of the first reflection inclined plane (31) of the plurality of light guide members (30) is gradually increased along the first light incidence direction.

6. The light exit structure of a surface light source as claimed in claim 1, wherein the plurality of light guides (30) are a plurality of first light reflecting grooves (32), the plurality of first light reflecting grooves (32) are disposed on the first surface (11) and are recessed toward the inside of the light transmissive structure (10), the first reflecting slope (31) is a first slope groove wall (311) of the plurality of first light reflecting grooves (32), and the first light reflecting grooves (32) further comprise a first straight groove wall (312);

wherein the minimum distance between the plurality of first slanted slot walls (311) and the second surface (12) decreases gradually along the first light entrance direction, and/or the height of the plurality of first slanted slot walls (311) increases gradually along the light entrance direction, and/or the inclination angles of the plurality of first slanted slot walls (311) are the same; and/or the length difference of two adjacent first inclined groove walls (311) is the same along the first light incidence direction.

7. The light-emitting structure of the surface light source as claimed in claim 6, wherein the first light-reflecting groove (32) contains a light-transmitting medium therein, and the refractive index of the light-transmitting structural member (10) is greater than that of the light-transmitting medium; and/or the inner surface of the first light reflecting groove (32) is provided with a light reflecting coating.

8. The light exit structure of a surface light source as claimed in claim 6, wherein the second side portion (14) has a second light source mounting portion, the plurality of light guide members (30) are further provided with a plurality of second light reflecting grooves (33), the plurality of second light reflecting grooves (33) are provided on the first surface (11), the plurality of second light reflecting grooves (33) and the plurality of first light reflecting grooves (32) are oppositely provided, and each of the second light reflecting grooves (33) has a second inclined groove wall (331) and a second straight groove wall (332) connected to each other.

9. The light exit structure of a surface light source as claimed in claim 8, wherein the angle between the first sloped slot wall (311) and the second sloped slot wall (331) is between 80 ° and 100 °.

10. A simulated sky lighting apparatus, comprising:

the direct surface light source comprises a surface light source light-emitting structure and a light-emitting unit positioned on the side part of the surface light source light-emitting structure;

a scattering plate (60) located at the downstream of the direct area light source and used for converting the emergent ray of the direct area light source into a first diffused light and a second transmitted light to be emitted outwards;

wherein the light-emitting structure of a surface light source is as defined in any one of claims 1 to 9.

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