CN217603958U - Rayleigh scattering sky lamp - Google Patents

Abstract

The application provides a Rayleigh scattering sky light, this Rayleigh scattering sky light includes following part: the light source module comprises a plurality of light-emitting units which are linearly arranged along a first direction, and each light-emitting unit comprises a reflecting cup with a reflecting inner cavity and a light source with the built-in reflecting inner cavity; the opening of the reflection inner cavity is a light outlet, and the inner wall surface is a reflection surface; the Rayleigh scattering element is provided with an incidence surface; in a second direction which is parallel to the plane of the light outlet and vertical to the first direction, the first reflection area and the third reflection area of the reflection surface are arranged in a polarization mode which is asymmetric relative to the central axis of the reflection cup; in the first direction, the second reflecting area and the fourth reflecting area of the reflecting surface are symmetrically arranged relative to the central axis of the reflecting cup; the polarized light reflection of the first reflection area and the third reflection area, the reflection of the second reflection area and the fourth reflection area, and the illumination intensity of the light obliquely irradiating the incident surface are equal. The blue sky illumination effect that the rayleigh scattering's sky lamp that this application provided can reach luminance uniformity.

Description

Rayleigh scattering sky lamp

Technical Field

The application belongs to the technical field of lighting devices, and more specifically relates to a sky lamp of rayleigh scattering.

Background

Sky lamps are increasingly popular with users as a new type of lamp that can simulate the appearance of a blue sky and the illumination of sunlight. The sky light generally includes a lamp housing, a light source, and a rayleigh scattering plate, wherein the light source is embedded in the lamp housing, the rayleigh scattering plate is disposed at a light exit surface of the lamp housing, light emitted from the light source irradiates the rayleigh scattering plate, and then the light irradiates a wall or a floor after being transmitted and rayleigh scattered by the rayleigh scattering plate to form an illumination spot. Therefore, the sky lamp not only can emit light rays similar to sunlight, but also can synchronously present blue sky scenes by utilizing a special Rayleigh scattering effect, so that indoor personnel can feel in an outdoor environment similar to sunlight irradiation, and the extension sense of an indoor space is effectively enhanced, and the mood of the indoor personnel is more pleasant. However, in the conventional sky light design, the illumination intensity of the light source projected onto the rayleigh scattering plate is not uniform, so that the sky light does not achieve a blue sky effect with uniform brightness.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the present application is to provide a skylight of rayleigh scattering to solve the technical problem that the skylight brightness is uneven in the prior art.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: a rayleigh scattering sky light is provided, comprising:

the light source module comprises a plurality of light-emitting units which are linearly arranged along a first direction, and each light-emitting unit comprises a reflecting cup with a reflecting inner cavity and a light source which is arranged in the reflecting inner cavity; the opening of one end of the reflecting inner cavity, which is far away from the light source, is a light outlet, and the inner wall surface of the reflecting inner cavity is a reflecting surface; and the number of the first and second groups,

the Rayleigh scattering piece is provided with an incident surface parallel to the light source module, and light rays emitted by the light source are emitted from the light outlet directly or after being reflected by the reflecting surface and are obliquely incident on the incident surface; the Rayleigh scattering element is used for transmitting and Rayleigh scattering the light rays incident to the incident surface;

the reflecting surface comprises a first reflecting area, a second reflecting area, a third reflecting area and a fourth reflecting area; in a second direction which is parallel to the plane where the light outlet is located and vertical to the first direction, the first reflection area and the third reflection area are arranged in a polarization mode which is asymmetric relative to the central axis of the reflection cup; in the first direction, the second reflecting area and the fourth reflecting area are symmetrically arranged relative to the central axis of the reflecting cup; the reflection cup is used for polarized light reflection through the first reflection area and the third reflection area and reflection of the second reflection area and the fourth reflection area so as to enable the illumination intensity of light rays emitted by the light source module to be equal when the light rays irradiate the incident surface.

Optionally, the reflection cup has a light source mounting opening opposite to the light outlet, the light source is accommodated at the light source mounting opening, and the light source and the reflection cup are coaxially arranged.

Optionally, the reflective inner cavity is provided with a flaring which gradually enlarges along the direction from the light source mounting opening to the light outlet.

Optionally, the incident surface is divided into a far-end incident area and a near-end incident area, and the distance between the light source module and the incident surface decreases from the far-end incident area to the near-end incident area; the first reflecting area is positioned on one side of the third reflecting area far away from the Rayleigh scattering piece;

part of light emitted by the light source is reflected by the first reflecting area, reflected by the third reflecting area and directly emitted from the light outlet to irradiate the far-end incident area; the other part of light emitted by the light source is reflected by the first reflecting area and directly emitted from the light outlet to realize irradiation to the near-end incident area; the illumination intensity of the light irradiated on the far-end incident area is equal to that of the light irradiated on the near-end incident area.

Optionally, the first reflection area includes a first far-end reflection sub-area and a first near-end reflection sub-area, the first far-end reflection sub-area is located on one side of the first reflection area close to the light outlet, and the first near-end reflection sub-area is located on one side of the first reflection area close to the light source;

part of light emitted by the light source is reflected by the first far-end reflection subarea and then irradiates to the far-end incidence area, and part of light emitted by the light source is reflected by the first near-end reflection subarea and then irradiates to the near-end incidence area.

Optionally, the first reflection area, the second reflection area, the third reflection area and the fourth reflection area are all concave cambered surfaces.

Optionally, a plurality of reflective convex portions are arranged in an array manner on the first reflective area, the second reflective area, the third reflective area and the fourth reflective area, and the reflective convex portions are arranged to protrude toward a central axis of the reflective cup.

Optionally, the reflective convex portions are in a rectangular block shape, and the first reflective area, the second reflective area, the third reflective area and the fourth reflective area are distributed in the plurality of reflective convex portions in a splicing manner.

Optionally, the light source module further comprises a lamp panel, the lamp panel is in a long-strip plate shape, and the plurality of light emitting units are uniformly distributed on the lamp panel along the first direction; light source fixed mounting is on the lamp plate, and the reflection cup is fixed with the lamp plate.

Optionally, the light source module is further including locating a plurality of fixed bolsters on the lamp plate, is equipped with the fixed buckle that corresponds with the fixed bolster position on the lateral surface of reflection cup, and the reflection cup is connected and is realized fixing on the lamp plate through the buckle of fixed buckle and fixed bolster.

The application provides a sky lamp of rayleigh scattering's beneficial effect lies in: compared with the prior art, in the application, the reflecting surface of the reflecting cup is partitioned, and the first reflecting area and the third reflecting area after being partitioned are arranged in a polarized light mode in the second direction in an asymmetric mode relative to the central axis of the reflecting cup, so that light rays emitted by the light source can be specifically distributed in the second direction after being reflected by the polarized light of the first reflecting area and the polarized light of the third reflecting area; simultaneously, because the light source module is parallel with the incident surface, first direction is parallel with the incident surface promptly, and second reflecting area and fourth reflecting area are the axis symmetry setting for the reflection cup, so light can realize evenly distributed in the first direction after the reflection of second reflecting area and fourth reflecting area, and the effect that the illumination intensity of every department equals when these two kinds of light reflection effect combine together just can reach light irradiation to the incident surface. Then, after the light with uniform illumination intensity incident to the incident surface is scattered and transmitted by the Rayleigh scattering element, the light can be further uniformly diffused, and finally, the scene of blue sky with more uniform brightness and the scene similar to sunlight illumination are realized, so that people in the room are more happy and happy. In addition, because the light source module is obliquely arranged relative to the Rayleigh scattering piece, the Rayleigh scattering sky lamp also has the advantage of thinner thickness. In other words, the rayleigh scattering sky light in the present application has the combined advantages of both thin thickness and uniform brightness.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a perspective view of a Rayleigh scattering sky light in accordance with an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of a light source module of a rayleigh-scattering sky light according to an embodiment of the present disclosure;

fig. 3 is an exploded view of a light source module of a rayleigh scattering sky light according to an embodiment of the present disclosure;

fig. 4 is an exploded view of another angle of a light source module of a rayleigh scattering sky light according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of a reflector cup of a Rayleigh scattering sky light in accordance with an embodiment of the present disclosure;

FIG. 6 is a schematic view of an optical path of a Rayleigh scattering sky light according to an embodiment of the present disclosure;

fig. 7 is a schematic optical path diagram of a light emitting unit of a rayleigh scattering sky light in a second direction according to an embodiment of the present application;

fig. 8 is a schematic optical path diagram of a light emitting unit of a rayleigh scattering sky light in a first direction according to an embodiment of the present application;

fig. 9 is a schematic optical path diagram of a partial cross-sectional structure of a reflector cup of a rayleigh scattering sky light according to an embodiment of the present application.

The reference numbers illustrate:

100-light source module, 200-Rayleigh scattering element, 110-light emitting unit, 210-incident surface, 111-reflecting cup, 112-light source, 113-light outlet, 114-reflecting inner cavity, 115-reflecting surface, 115 a-first reflecting area, 115 b-second reflecting area, 115 c-third reflecting area, 115 d-fourth reflecting area, 300-lamp housing, 116-light source mounting port, 211-far end incident area, 212-near end incident area, 115 e-first far end reflecting area, 115 f-first near end reflecting area, 117-reflecting convex part, 120-lamp panel, 130-fixing bracket, 118-fixing buckle and 131-buckle hole.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present application are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present application and should not be construed as limiting the present application.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The embodiment of the application provides a sky lamp of sky rayleigh scattering.

Referring to fig. 1 to 8, in an embodiment, the rayleigh scattering sky light includes a light source module 100 and a rayleigh scattering element 200. Specifically, the light source module 100 includes a plurality of light emitting units 110 linearly arranged along a first direction, each light emitting unit 110 includes a reflective cup 111 having a reflective cavity 114 and a light source 112 embedded in the reflective cavity 114; the opening of the end of the reflective cavity 114 away from the light source 112 is a light outlet 113, and the inner wall surface of the reflective cavity 114 is a reflective surface 115. The rayleigh scattering element 200 has an incident surface 210 parallel to the light source module 100, and light emitted from the light source 112 is emitted from the light outlet 113 directly or after being reflected by the reflecting surface 115, and is obliquely incident on the incident surface 210; the rayleigh scattering element 200 transmits and rayleigh scatters light incident on the incident surface 210. The reflective surface 115 includes a first reflective region 115a, a second reflective region 115b, a third reflective region 115c, and a fourth reflective region 115d; in a second direction parallel to the plane of the light exit 113 and perpendicular to the first direction, the first reflective region 115a and the third reflective region 115c are disposed in a polarization state asymmetric with respect to the central axis L of the reflective cup 111; in the first direction, the second reflective region 115b and the fourth reflective region 115d are symmetrically disposed with respect to the central axis L of the reflective cup 111; the reflective cup 111 is used for polarized light reflection through the first reflective region 115a and the third reflective region 115c, and reflection through the second reflective region 115b and the fourth reflective region 115d, so that the illumination intensity of the light emitted from the light source module 100 on the incident surface 210 is equal.

It should be noted that, in the present embodiment, as shown in fig. 1, in addition to the above-mentioned component structures, the rayleigh scattering sky lantern further includes a flat box-shaped light casing 300, the light source module 100 is disposed in the inner cavity of the light casing 300 and is fixedly connected with the inner wall of the side plate of the light casing 300, and the rayleigh scattering element 200 is generally flat and is disposed at the light exit surface of the bottom plate of the light casing 300. If the first direction, which is the arrangement direction of the light emitting units 110 in fig. 1, is the front-back direction, the thickness direction of the lamp housing 300 is the vertical direction, and the length direction of the lamp housing 300 is the horizontal direction, the light source module 100 is actually positioned at the upper left of the rayleigh scattering element 200, and the first direction is the same as the width direction of the lamp housing 300 and is parallel to the rayleigh scattering element 200. Here, the effect of the sky light to produce blue sky illumination is based on the rayleigh scattering phenomenon. The rayleigh scattering phenomenon is a special scattering phenomenon, also called "molecular scattering", in which when the particle size is much smaller than the wavelength of the incident light (smaller than one tenth of the wavelength), the intensity of the scattered light in each direction is different, and the intensity is proportional to the fourth power of the frequency of the incident light, so that the blue light is scattered more, thereby showing a blue sky scene. The rayleigh scattering element 200 utilizes the rayleigh scattering principle, and a certain amount of scattering particles are doped in materials such as optical plastics and optical glass, so as to increase the scattering of blue light, and meanwhile, long-wavelength light in the light can penetrate through the rayleigh scattering element 200 to present illumination spots similar to sunlight irradiation on walls or floors.

Based on the structural design, in the embodiment, the reflection surface 115 of the reflection cup 111 is partitioned, and the partitioned first reflection area 115a and the partitioned third reflection area 115c are arranged in a polarized light manner in the second direction, which is asymmetric with respect to the central axis L of the reflection cup 111, so that the light emitted by the light source 112 can be reflected by the polarized light of the first reflection area 115a and the polarized light of the third reflection area 115c, and then specific distribution is realized in the second direction; meanwhile, since the light source module 100 is parallel to the incident surface 210, that is, the first direction is parallel to the incident surface 210, and the second reflective area 115b and the fourth reflective area 115d are symmetrically arranged with respect to the central axis L of the reflective cup 111, light is reflected by the second reflective area 115b and the fourth reflective area 115d, and then is uniformly distributed in the first direction, and the two light reflection effects are combined to achieve the effect of equal illumination intensity at each position when the light irradiates the incident surface 210. Then, after the light with uniform illumination intensity is scattered and transmitted by the rayleigh scattering element 200 when the light is incident on the incident surface 210, the light can be further uniformly diffused, and finally, a scene of blue sky with more uniform brightness and a scene similar to sunlight illumination are realized, so that people in the room are more happy and happy. In addition, since the light source module 100 is disposed obliquely relative to the rayleigh scattering element 200, the rayleigh scattering sky light has an advantage of a thinner thickness. In other words, the rayleigh scattering sky light in the present application has the combined advantages of thin thickness and uniform brightness.

Referring to fig. 2 to 5, in the present embodiment, the reflective cup 111 has a light source mounting opening 116 opposite to the light outlet 113, the light source 112 is accommodated in the light source mounting opening 116, and the light source 112 and the reflective cup 111 are coaxially disposed. Thus, the light emitted from the light source 112 can be emitted from the light outlet 113 directly or reflected by the reflective surface 115 to be emitted from the light outlet 113, so as to avoid light leakage. Moreover, the coaxial arrangement of the light source 112 and the reflection cup 111 is also beneficial to the design convenience of the light reflection optical path of the reflection surface 115. Here, the light source 112 is preferably an energy-saving, environment-friendly and high-efficiency LED light source, and the spectrum of the light emitted by the LED light source includes, but is not limited to, a high color temperature white light spectrum, a low color temperature white light spectrum, a full spectrum of natural light, an infrared spectrum, and the like, and may be a combination of multiple spectrums. In addition, to avoid the influence of the LED light source when it is overheated, the reflective cup 111 is preferably made of high temperature resistant optical plastic, and the temperature resistance of the material should be greater than 120 ℃.

Referring to fig. 2 to 6, in the present embodiment, the reflective cavity 114 is disposed in a flaring shape gradually expanding in a direction from the light source mounting opening 116 toward the light outlet 113. The design can obtain larger area of the light outlet 113 and better light reflection effect. In addition, in order to ensure the brightness uniformity of the rayleigh scattering sky lantern, the light emitted from the light source module 100 should be fully illuminated when being projected onto the rayleigh scattering element 200, i.e. the angle of the light projected onto the rayleigh scattering element 200 should satisfy a certain angle range.

It can be understood that in order to achieve uniform illumination of the rayleigh scattering element 200, the uniformity of the light exiting in the first and second directions needs to be controlled. It should be noted that fig. 6 to 9 are schematic diagrams with simplified structures, so as to illustrate the light paths. In the first direction, i.e. the transverse direction, as shown in fig. 8, since the light source module 100 is located at one side of the rayleigh scattering element 200, the light source module 100 is parallel to the incident surface 210, and the light source module 100 includes a plurality of light emitting units 110 linearly arranged along the first direction, an optical reflection design for making the reflection cup 111 symmetrical in the first direction is required, that is, in the first direction, the second reflection area 115b and the fourth reflection area 115d are symmetrically arranged with respect to the central axis L of the reflection cup 111. On the other hand, in the second direction, i.e., the longitudinal direction, as shown in fig. 6 and 7, since the light is obliquely incident on the incident surface 210, the illumination intensity of the light on the incident surface 210 is generally weaker as the distance from the light source 112 is larger, and thus the light distribution in the second direction needs to be polarized, which can be realized by arranging the first reflective region 115a and the third reflective region 115c in a polarized manner in the second direction which is asymmetric with respect to the central axis L of the reflective cup 111.

As shown in fig. 6, in the present embodiment, the incident surface 210 is divided into a far-end incident region 211 and a near-end incident region 212, and the distance from the light source module 100 to the incident surface 210 decreases from the far-end incident region 211 to the near-end incident region 212; the first reflecting region 115a is located on the side of the third reflecting region 115c away from the rayleigh scattering element 200; part of light emitted by the light source is reflected by the first reflecting area 115a, reflected by the third reflecting area 115c and directly emitted from the light outlet 113 to irradiate the far-end incident area 211; another part of the light emitted by the light source is reflected by the first reflection region 115a and directly emitted from the light outlet 113 to be irradiated to the near-end incident region 212; the intensity of the light irradiated to the far-end incident region 211 is equal to the intensity of the light irradiated to the near-end incident region 212. Further, the first reflection region 115a includes a first far-end reflection sub-region 115e and a first near-end reflection sub-region 115f, the first far-end reflection sub-region 115e is located on one side of the first reflection region 115a close to the light outlet 113, and the first near-end reflection sub-region 115f is located on one side of the first reflection region 115a close to the light source 112; part of the light emitted by the light source 112 is reflected by the first far-end reflection sub-area 115e and then irradiates the far-end incident area 211, and part of the light emitted by the light source 112 is reflected by the first near-end reflection sub-area 115f and then irradiates the near-end incident area 212. In other words, for the purpose of uniformly irradiating the rayleigh scattering element 200, the target irradiation area, i.e. the incidence plane 210, can be divided into two incidence areas, namely, the near incidence area 212 and the far incidence area 211, and the two incidence areas are respectively controlled by the first reflection area 115a and the third reflection area 115c and the light is directly emitted from the light outlet 113 to control the light distribution. Wherein, the illumination intensity on the far-end incident region 211 is controlled by the third reflective region 115c, the first far-end reflective subarea 115e which is the region on the first reflective region 115a and is partially far away from the light source 112, and the light rays directly emitted from the light outlet 113; the illumination intensity of the proximal incident area 212 is controlled by the area of the first reflective area 115a partially close to the light source 112, i.e. the first proximal reflective sub-area 115f, and the light emitted from the light outlet 113.

Further, in the present embodiment, the first reflective region 115a, the second reflective region 115b, the third reflective region 115c, and the fourth reflective region 115d are all concave surfaces. The concave cambered surfaces are all total reflection surfaces, and the curvatures of the total reflection surfaces can be calculated according to the illumination intensity of the target area. As shown in fig. 7, OA in the figure is an incident light, AB is a reflected light of the incident light after being reflected by the third reflective region 115c, and if the angle of the light of each region is divided into N units, the angle of the 45-degree light of the third reflective region 115c is divided into 1000 unit angles, i.e., each unit angle is 45/1000 degrees. According to the principle of isolux, if the light intensity of the far-end light is kept consistent, more light rays need to be distributed, so that the coordinates of the points of the third reflection region 115c can be obtained, and a curve can be fitted. Of course, the curvatures of the first reflective region 115a, the second reflective region 115b and the fourth reflective region 115d can be obtained by the same method.

Referring to fig. 3 to 5 and fig. 9, in order to further enhance the reflection uniformity of the reflection surface 115 to the light, and further improve the brightness uniformity of the rayleigh scattering sky lamp, a plurality of reflective protrusions 117 are arranged in an array on the first reflection area 115a, the second reflection area 115b, the third reflection area 115c and the fourth reflection area 115d, and the reflective protrusions 117 are protruded toward the central axis L of the reflector cup 111. As shown in fig. 3 to 5, the reflective protrusions 117 are rectangular blocks, and the first reflective region 115a, the second reflective region 115b, the third reflective region 115c, and the fourth reflective region 115d are formed by splicing and spreading a plurality of reflective protrusions 117. In other words, the reflecting surface 115 has a scaly shape, and the reflecting convex portions 117 are spread over the upper surface. Generally, the larger the projection height of the reflective protrusion 117 is, the more uniform the reflected light is, but the light is more disordered, so the projection height of the reflective protrusion 117 is usually controlled within 0.1mm, and the preferable range of the length and width of the reflective protrusion 117 is 1mm to 2mm, which causes difficulty in processing if the size of the reflective protrusion 117 is too small, and the larger the size of the reflective protrusion 117 causes the smaller the number thereof, thereby reducing the optimization effect of the light.

Referring to fig. 1 to 4, in the present embodiment, the light source module 100 further includes a lamp panel 120, the lamp panel 120 is in a shape of a long strip plate, and the plurality of light emitting units 110 are uniformly arranged on the lamp panel 120 along a first direction; the light source 112 is fixedly installed on the lamp panel 120, and the reflective cup 111 is fixed to the lamp panel 120. The light source module 100 further includes a plurality of fixing brackets 130 disposed on the lamp panel 120, a fixing buckle 118 corresponding to the fixing bracket 130 is disposed on an outer side surface of the reflection cup 111, and the reflection cup 111 is fixed on the lamp panel 120 by the fixing buckle 118 being connected with the fixing bracket 130. Specifically, for each reflection cup 111, two fixing fasteners 118 are provided and are oppositely disposed along the second direction, correspondingly, each reflection cup 111 also has two corresponding fixing brackets 130, the two fixing brackets 130 are also oppositely disposed along the second direction and are provided with fastening holes 131, and then, the fastening hooks of the corresponding fasteners are fastened into the fastening holes 131, so that the fastening connection between the reflection cup 111 and the fixing brackets 130 can be realized. However, the design is not limited thereto, and in other embodiments, the reflective cup 111 and the lamp panel 120 may be connected by other methods, such as but not limited to a screw connection. However, in the embodiment, the reflective cup 111 and the fixing bracket 130 are fixed by a snap fit, so that the reflective cup 111 is more convenient to mount.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A rayleigh-scattering sky light, comprising:

the light source module comprises a plurality of light emitting units which are linearly arranged along a first direction, and each light emitting unit comprises a reflecting cup with a reflecting inner cavity and a light source which is arranged in the reflecting inner cavity; an opening at one end of the reflecting inner cavity, which is far away from the light source, is a light outlet, and the inner wall surface of the reflecting inner cavity is a reflecting surface; and the number of the first and second groups,

the Rayleigh scattering piece is provided with an incident plane parallel to the light source module, and light rays emitted by the light source are emitted from the light outlet directly or after being reflected by the reflecting surface and obliquely incident on the incident plane; the Rayleigh scattering piece is used for transmitting and Rayleigh scattering the light rays incident to the incident surface;

the reflecting surface comprises a first reflecting area, a second reflecting area, a third reflecting area and a fourth reflecting area; in a second direction which is parallel to the plane where the light outlet is located and vertical to the first direction, the first reflection area and the third reflection area are arranged in a polarization mode which is asymmetric relative to the central axis of the reflection cup; in the first direction, the second reflection area and the fourth reflection area are symmetrically arranged relative to the central axis of the reflection cup; the reflection cup is used for enabling the illumination intensity of the light rays emitted by the light source module to be equal when the light rays irradiate the incident surface through polarized light reflection of the first reflection area and the third reflection area and reflection of the second reflection area and the fourth reflection area.

2. The rayleigh-scattering sky lamp as set forth in claim 1, wherein the reflector cup has a light source mounting opening opposite the light exit opening, the light source is received at the light source mounting opening, and the light source is disposed coaxially with the reflector cup.

3. The rayleigh-scattering sky lamp as set forth in claim 2, wherein the reflecting inner cavity is provided in a flare gradually expanding in a direction from the light source mounting port toward the light exit port.

4. The rayleigh-scattering sky lamp as set forth in claim 3, wherein the incidence plane is divided into a far-end incidence area and a near-end incidence area, and the distance between the light source module and the incidence plane is gradually decreased from the far-end incidence area to the near-end incidence area; the first reflection area is positioned on one side of the third reflection area far away from the Rayleigh scattering piece;

part of light rays emitted by the light source are reflected by the first reflecting area, reflected by the third reflecting area and directly emitted from the light outlet to irradiate the far-end incident area; another part of light emitted by the light source is reflected by the first reflecting area and directly emitted from the light outlet to realize irradiation to the near-end incident area; the illumination intensity of the light irradiated on the far-end incident area is equal to the illumination intensity of the light irradiated on the near-end incident area.

5. The rayleigh-scattering sky lamp as defined in claim 4, wherein the first reflecting area includes a first far-end reflecting partition located on a side of the first reflecting area near the light exit port and a first near-end reflecting partition located on a side of the first reflecting area near the light source;

and part of light rays emitted by the light source are reflected by the first far-end reflection subarea and then irradiate to the far-end incidence area, and part of light rays emitted by the light source are reflected by the first near-end reflection subarea and then irradiate to the near-end incidence area.

6. The rayleigh-scattering sky light of claim 3, wherein the first, second, third and fourth reflective regions are concave arcs.

7. The rayleigh-scattering sky lamp as set forth in claim 2, wherein a plurality of reflective protrusions are arranged in an array on the first reflective area, the second reflective area, the third reflective area and the fourth reflective area, and the reflective protrusions are convexly disposed toward the central axis of the reflector cup.

8. The rayleigh-scattering sky lamp as set forth in claim 7, wherein the reflection convex portion has a rectangular block shape, and the first reflection region, the second reflection region, the third reflection region and the fourth reflection region are distributed over a plurality of the reflection convex portions in a mutually spliced manner.

9. The rayleigh-scattering sky light of any one of claims 1 to 8, wherein the light source module further comprises a lamp panel having a shape of a long strip plate, and a plurality of the light emitting units are uniformly arranged on the lamp panel along the first direction; the light source is fixedly installed on the lamp panel, and the reflection cup is fixed with the lamp panel.

10. The rayleigh-scattering sky lamp as defined in claim 9, wherein the light source module further comprises a plurality of fixing brackets provided on the lamp panel, fixing fasteners corresponding to the fixing brackets are provided on the outer side surface of the reflecting cup, and the reflecting cup is fixed to the lamp panel by the fastening of the fixing fasteners and the fixing brackets.

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