Blue sky lamp lighting device

Abstract

A blue sky lamp lighting device comprises a rectangular lamp shell, a Rayleigh scattering plate and a light-emitting assembly, the Rayleigh scattering plate and the light-emitting assembly are installed in the lamp shell, and the light-emitting assembly is composed of a first light source, a second light source, a first light barrier and a second light barrier. Light rays of the first light source and the second light source irradiate the Rayleigh scattering plate area on the other side through the gap between the first light barrier and the second light barrier, part of the light rays generate Rayleigh scattering to achieve the blue-sky-like effect, and the rest of the light rays penetrating through the area achieve the double-side light-emitting illumination effect. The lighting device is suitable for lighting long and narrow aisle spaces such as corridors, light can be evenly distributed on the two sides of a wall and does not directly enter human eyes, and the sky-blue sky lighting effect is effectively simulated indoors.

Description

Technical Field

[0001] The utility model belongs to the technical field of lighting devices and relates to a blue sky lamp, in particular to a blue sky lamp suitable for use in a narrow and long corridor. Background Art

[0002] The blue sky lamp is a lighting device that simulates the natural blue sky light effect through a special lamp structure and optical design. The lamp uses a Rayleigh scattering light-emitting plate made of a special material. When the light generated by the light-emitting component passes through the light-emitting plate, part of the short-wave blue light undergoes Rayleigh scattering, which makes the Rayleigh scattering light-emitting plate achieve a sky-blue background effect. The remaining blue light and almost all other bands of light pass through the Rayleigh scattering light-emitting plate to achieve white light lighting. The blue sky lamp simulates the sky blue lighting effect through Rayleigh scattering, aiming to create a blue sky effect for the indoor environment, so that people can feel the visual and sensory experience similar to the outdoor blue sky even when they are indoors.

[0003] Blue sky lights are usually used in closed (semi-closed) places without natural light sources, such as basements or dark rooms. By simulating the blue sky lighting effect of natural light, the lighting environment is improved, making people feel more comfortable and natural. At the same time, blue sky lights also have a huge application market in commercial spaces, exhibition halls and other places. Using blue sky lights in these places can increase the naturalness, beauty and comfort of the indoor environment.

[0004] At present, blue sky lamps generally use LED as the main point light source components, so there is a strong glare problem. This is because in order to take into account both the blue sky effect and the efficient lighting effect, blue sky lamps usually use a special structure of Rayleigh scattering light output plate, which allows some short-wave blue light to Rayleigh scatter to achieve the blue sky effect, while allowing most other bands of light to pass through to achieve the lighting effect. When the light emitted by the light-emitting component directly shines on the human eye through the Rayleigh scattering light output plate, the partitioning of the emitted light can be clearly observed. The central bright spot is the relatively parallel light emitted by the light-emitting component, and the surrounding is the direct light and diffuse reflected light that are not acted upon by the light-emitting component. However, whether it is directly irradiated to the eyes or reflected on the surface of an object, it will be dazzling.

[0005] To prevent glare, blue sky lights are usually designed with a single-sided tilted light structure, projecting light onto a single wall or illuminated object to avoid direct exposure to the human eye, creating a natural light-like blue sky lighting effect in the indoor environment.

[0006] For a blue sky lamp lighting device that emits light from one side, a reflective device is usually designed in the lamp body or the lamp body is tilted and extended on one side, and the lighting component is installed at the appropriate position of the lamp body to achieve a lighting effect with light emitted from one side. On the one hand, the extension leads to a larger volume of existing single-sided light-emitting lighting devices (the width is increased to about 1.5 times the actual light-emitting panel), or an additional reflective device is required. Not only is the device structure complicated, but the increased volume is also not conducive to the design and aesthetics of the actual lighting application installation environment; on the other hand, in places where a bilaterally symmetrical light-emitting lighting effect is required, single-sided blue sky lamps need to be installed in multiples to achieve the same lighting effect, and this is greatly restricted in terms of lamp installation design and lighting atmosphere creation.

[0007] Therefore, developing a blue sky lamp lighting device with double-sided light output, simple structure, and smaller lamp body structure that is suitable for use in narrow corridors such as corridors is of great significance to promoting the application scenarios of blue sky lamps and the large-scale commercial development of blue sky lamps. Utility Model Content

[0008] The purpose of the utility model is to provide a blue sky lamp lighting device, which, through the reasonable design of the light source, enables the light to be irradiated onto a Rayleigh scattering plate from both sides according to a predetermined light path, thereby achieving a better double-sided light emitting lighting effect while showing a more realistic blue sky effect.

[0009] To achieve the above-mentioned purpose, the utility model provides a blue sky lamp lighting device, including a lamp housing, a Rayleigh scattering plate and a light-emitting component. The lamp housing is rectangular and has a downward light outlet. The Rayleigh scattering plate is installed at the light outlet at the bottom of the lamp housing. The light-emitting component is fixedly installed in the cavity of the lamp housing. Part of the light emitted by the light-emitting component is scattered by the Rayleigh scattering plate to achieve a blue sky effect, and the remaining light is used for lighting through the Rayleigh scattering plate.

[0010] Furthermore, a light blocking plate is added to the lighting device of the utility model to block the light from the light source at a certain angle so that the light can only be irradiated on the Rayleigh scattering plate according to a predetermined light path within the range between the lamp housing and the light blocking plate, thereby generating blue sky-like lighting through the Rayleigh scattering plate within the predetermined area.

[0011] Specifically, with the center line of the length direction of the lamp shell of the Rayleigh scattering plate as the boundary, the light-emitting assembly described in the utility model is composed of a first light source and a second light source installed on both sides of the center line of the length direction of the lamp shell in the lamp shell and arranged along the length direction of the lamp shell, and a first light baffle and a second light baffle respectively arranged below the first light source and the second light source and having the same length as the lamp shell.

[0012] The first light blocking plate and the second light blocking plate are located in the light regions of the first light source and the second light source, so that the width thereof can be used to block the light from a part of the angles of the first light source and the second light source.

[0013] Among them, the first light baffle and the second light baffle are respectively used to block the light emitted by the first light source at downward and upward angles, so that the light emitted by the first light source can only pass through the gap between the first light baffle and the second light baffle, and shine on the Rayleigh scattering plate area between the center line of the lamp shell in the length direction and the bottom edge of the lamp shell in the length direction on the side of the second light baffle. Part of the light produces Rayleigh scattering to achieve a blue sky effect, and the rest of the light passes through this area to achieve a lighting effect.

[0014] Similarly, the second light baffle and the first light baffle are used to block the light emitted by the second light source at downward and upward angles, respectively, so that the light emitted by the second light source can only pass through the gap between the second light baffle and the first light baffle, and illuminate the Rayleigh scattering plate area between the center line of the lamp shell in the length direction and the bottom edge of the lamp shell in the length direction on the side of the first light baffle. Part of the light produces Rayleigh scattering to achieve a blue sky effect, and the rest of the light passes through this area to achieve a lighting effect.

[0015] Therefore, except for part of the short-wave blue light emitted by the first light source and the second light source being scattered by the Rayleigh scattering plate, most of the remaining light passes through the Rayleigh scattering plate and illuminates the opposite sides of the first light source and the second light source, thereby realizing double-sided lighting of the lighting device.

[0016] Furthermore, the utility model preferably designs the lighting device into a symmetrical structure, that is, the first light source and the second light source are installed on the top of the lamp housing symmetrically with respect to the center line of the length direction of the lamp housing, and the first light baffle and the second light baffle are respectively obliquely arranged on the top of the lamp housing and on the outside of the first light source and the second light source, and the first light baffle and the second light baffle have the same width and have the same inclination angle but opposite directions.

[0017] Specifically, the inclination angle is set so that the first light baffle and the second light baffle extend downward and just intersect on the center line of the length direction of the lamp shell of the Rayleigh scattering plate; the width is set so that the bottom end of the first light baffle is located on the plane formed by the bottom edge of the lamp shell in the length direction on the first light baffle side and the second light source, and the bottom end of the second light baffle is located on the plane formed by the bottom edge of the lamp shell in the length direction on the second light baffle side and the first light source.

[0018] Therefore, through the cooperation between the first light baffle and the second light baffle, the light emitted by the first light source can only illuminate the Rayleigh scattering plate area between the center line of the lamp shell in the length direction and the bottom edge of the lamp shell in the length direction on the side of the second light baffle, thereby producing Rayleigh scattering and lighting effects; the light emitted by the second light source can only illuminate the Rayleigh scattering plate area between the center line of the lamp shell in the length direction and the bottom edge of the lamp shell in the length direction on the side of the first light baffle, thereby producing Rayleigh scattering and lighting effects.

[0019] Designing the lighting device to have a symmetrical structure, that is, the positions, angles, and sizes of the two groups of light-emitting components are symmetrical to each other, can greatly reduce the difficulty of preparing the device and achieve the purpose of making the lighting device simpler and more efficient lighting.

[0020] More specifically, the utility model preferably sets the inclination angle of the first light baffle and the second light baffle, that is, the angle between the first light baffle or the second light baffle and the lamp housing to 10-80°.

[0021] At the same time, taking into account factors such as the low processing accuracy of the first light baffle and the second light baffle and the slight deviation in setting the inclination angle, it is very likely that the light from the first light source and the second light source irradiated on the center line of the length direction of the Rayleigh scatter plate lamp housing cannot form a very precise seamless connection, or there may be slits or partial light overlap, and the farthest light output from the first light source and the second light source cannot be located exactly at the connection between the edge of the Rayleigh scatter plate and the lamp housing in the length direction of the lamp housing, thereby making it impossible for the Rayleigh scatter plate to achieve a uniform blue sky-like light effect.

[0022] Therefore, the utility model provides a light-beam housing around the edges of the Rayleigh scattering plate and at the center line of the lamp housing in the length direction (ie, the intersection of the light rays irradiated on the Rayleigh scattering plate by the first light source and the second light source).

[0023] The light beam housing is a light-proof frame structure and can be made of materials such as acrylic, preferably white material. The cross-sectional width and height of the frame structure can be set according to the use of the lighting device, but the maximum does not exceed 20 cm.

[0024] Furthermore, the frame cross section of the light beam housing at the center line of the lamp housing in the length direction may be preferably set to an isosceles trapezoidal structure, whose long bottom side contacts the Rayleigh scattering plate, that is, the two side surfaces of the light beam housing are inclined surfaces.

[0025] Among them, the light-beaming shell around the Rayleigh scattering plate is used to strictly confine the illumination light transmitted from the Rayleigh scattering plate to a specified range, so that it can form a regular illumination area with clear boundaries when projected onto the illuminated object or wall, achieving a lighting effect similar to that of sunlight transmitting through the window and illuminating the illuminated object or wall.

[0026] The light beam shell arranged at the center line position, on the one hand, cooperates with the surrounding light beam shells to form a regular and patterned projection lighting area, and on the other hand, is used to block the light of the first light source and the second light source irradiated on the center line of the Rayleigh scattering plate, so as to solve the problem of uneven brightness of the Rayleigh scattering plate caused by the slits or partial light overlap due to the inability to form a very precise seamless connection, thereby improving the yield rate of the lighting device.

[0027] At the same time, the light beam shells arranged around and at the center line of the Rayleigh scattering plate also have a decorative effect on the lighting device, allowing it to be more matched and coordinated with the surrounding environment.

[0028] Furthermore, the utility model also provides a black light-absorbing layer on the inner surface of the lamp housing of the lighting device, and on both side surfaces of the first light baffle and the second light baffle to prevent light reflection from occurring inside the lighting device, so that the lighting device of the utility model no longer generates reflected light except for the direct light from the above-mentioned two light sources.

[0029] Furthermore, the black light-absorbing layer used in the present invention can be any existing material that can absorb the light irradiated on its surface and reduce reflection, and the present invention has no special limitation on it.

[0030] Preferably, the black light absorbing layer can be a light absorbing material coating or layer with an irregular rough surface or a porous structure. More preferably, the black light absorbing layer is black felt.

[0031] Furthermore, in the lighting device of the present invention, the first light source and the second light source are composed of an LED light source, a lens and a reflective cup, the LED light source is installed at the focal position of the reflective cup, the lens is arranged adjacent to the LED light source and is located on the light emitting side of the LED light source, and through reasonable installation and arrangement, the light emission quantity (light center intensity, light spot size, etc.) and light emission quality (light spot edge and fading effect, etc.) are controlled, so that the LED light source emits more uniform light into the set area of ​​the Rayleigh scattering plate, part of the short-wave blue light undergoes Rayleigh scattering to achieve a blue sky effect, and most of the light is transmitted through the Rayleigh scattering plate to achieve the lighting effect.

[0032] The blue sky lamp lighting device provided by the utility model can generate a light range with a specific angle distribution. Through the reasonable design of the position of the light-emitting component and the angle of the light-blocking plate, under their coordinated effect, the light emitted by the light-emitting component is distributed in a specific area of ​​the Rayleigh scattering plate, and a blue sky effect is achieved through the Rayleigh scattering effect. At the same time, the light transmitted through the Rayleigh scattering plate is evenly sprinkled on the illuminated objects or walls on both sides of the lighting device, which can effectively simulate the lighting effect of the blue sky indoors.

[0033] The lighting device of the utility model adopts an ingenious design, introducing double rows of lighting light sources into the same lamp housing, and through reasonable arrangement, the light emitted by the two rows of lighting light sources (the first light source and the second light source) is cross-evenly irradiated onto the Rayleigh scattering plate, which not only solves the problem of difficulty in emitting light from both sides of the same lamp housing, but also effectively simplifies the structure of the lighting device and reduces the size of the lighting device through ingenious design.

[0034] Furthermore, the blue sky lamp of the utility model preferably adopts a symmetrical regular lamp body shell, which also makes the lighting device more compatible with the lighting environment, which is conducive to expanding the lighting market of the product.

[0035] Based on the above structural characteristics, the blue sky lamp lighting device of the present invention is more suitable for use in long and narrow passages, such as semi-enclosed or enclosed spaces such as corridors and alleys.

[0036] Since the first light source and the second light source of the blue sky lamp lighting device of the utility model adopt an inclined light emission mode, after passing through the Rayleigh scattering plate, a regular irradiation range with a certain height is formed on the opposite wall or the irradiated object. The irradiation range makes it impossible for anyone standing at any position in the space where the lighting device is installed to directly see the first light source and the second light source, thereby effectively avoiding the glare phenomenon.

[0037] The size designs of the aisles (or corridors) and lighting places of various buildings are different. Therefore, the size specifications of the blue sky light lighting device of the present invention will also change accordingly with the actual size of the lighting place.

[0038] Furthermore, in order to ensure that the first light source and the second light source can illuminate the designated illumination area on the wall (or the illuminated object) after passing through the Rayleigh scattering plate, the angle between the light baffle and the upper part of the lamp housing and the width of the light baffle will also change with the change of the size of the lamp housing.

[0039] Through the structural arrangement design of the blue sky lamp lighting device of the utility model, the light emitted by the light sources on both sides is irradiated on the predetermined area of ​​the Rayleigh scattering plate in a specified manner without overlapping under the action of the light blocking plate to form Rayleigh scattering, thereby achieving a blue sky effect and generating double-sided light for lighting. The device not only has a simple structure, a regular appearance, and a small size, but also has no glare, can provide lighting needs in different ranges, and can create a natural blue sky light lighting effect in closed (semi-closed) spaces such as conference rooms, basements, narrow corridors, alleys, garages, and wards where light cannot reach, making people feel happy and in good condition. It is of great significance to improving the quality of life and living standards, and has a huge application market.

[0040] The blue sky lamp lighting device of the utility model does not require additional supplementary light sources, nor does it require fine configuration of the light distribution of the light sources in the device, thereby simplifying the design structure of the lighting device and enhancing the ability to simulate the blue sky effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural schematic diagram of the utility model blue sky lamp lighting device.

[0042] Figure 2 It is a structural schematic diagram of a blue sky lamp lighting device with a symmetrical structure.

[0043] Figure 3 It is a schematic diagram of the light beam shell structure of the blue sky lamp lighting device.

[0044] Figure 4 It is a light path diagram of installing a blue sky light lighting device in a specific scenario.

[0045] Figure 5 It is a design rendering of installing the blue sky light lighting device in a specific scenario. Implementation

[0046] The specific implementation of the utility model is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of the utility model, so that those skilled in the art can well understand and use the utility model, rather than limiting the scope of protection of the utility model.

[0047] It should be understood that, for the convenience of description, in the embodiments of the present invention, terms indicating orientation or position relationship, such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "center", "top", "bottom", "inside", and "outside" may be used. These terms are only based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the device of the utility model is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0048] In the description of the embodiments of the utility model, it is also necessary to explain that, unless otherwise clearly stipulated and limited, the terms "set", "installed", "fixed", "connected" and the like should be understood in a broad sense. For example, when a component is referred to as "fixed on" or "set on" another component, it can be understood as directly on the other component or indirectly on the other component; when a component is referred to as "connected to" another component, it can also be directly connected to the other component or indirectly connected to the other component. It can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or even the internal connection of the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0049] The preparation methods of the lighting devices involved in the embodiments of the present invention are all conventional methods in the prior art unless otherwise specified, and the names and / or abbreviations used are all conventional names in the field and are very clear and unambiguous in the relevant fields of use. Technicians in the field can understand the conventional process steps based on the names and apply the corresponding equipment, and implement them according to conventional conditions or the conditions recommended by the manufacturer. Example

[0050] Example 1

[0051] The structure of the blue sky light lighting device is as follows Figure 1 The lamp housing 1 is a regular rectangular parallelepiped, the length L of the lamp housing 1 can be 10-480 cm, the width W>20 cm, and the height H>10 cm. The lower part of the lamp housing 1 is a light outlet, and the Rayleigh scattering plate 2 is installed at the light outlet to seal the lamp housing 1 to form a lamp cavity.

[0052] A light-emitting assembly is installed in the lamp cavity, which is divided into a first light-emitting assembly 3 and a second light-emitting assembly 4. oooo' The two sides are respectively arranged on the left and right sides of the lamp cavity.

[0053] The first light-emitting assembly 3 is composed of a first light source 31 and a first light baffle 32 along a length L, and the second light-emitting assembly 4 is composed of a second light source 41 and a second light baffle 42 along a length L. The lengths of the first light baffle 32 and the second light baffle 42 are consistent with the length L of the lamp housing 1; the first light baffle 32 forms an angle θ1 with the top of the lamp housing 1, and the second light baffle 42 forms an angle θ2 with the top of the lamp housing 1. The angles θ1 and θ2 are in the range of 10 to 80°, and the angles should be such that the first light baffle 32 and the second light baffle 42 can just pass through the center line when extending downward. oooo' .

[0054] At the same time, the widths of the first light baffle 32 and the second light baffle 42 are set to meet the following conditions: if a plane is set that passes through the second light source 41 and the bottom edge of the left side of the lamp housing 1 at the same time, the width of the first light baffle 32 is set so that its bottom edge is also exactly located on the plane. Similarly, if a plane is set that passes through the first light source 31 and the bottom edge of the right side of the lamp housing 1 at the same time, the width of the second light baffle 42 is set so that its bottom edge is also exactly located on the plane.

[0055] Black felt 5 is provided on the inner surface of the lamp housing 1 and the two side surfaces of the first light baffle 32 and the second light baffle 42 to absorb the light irradiated thereon so that no light reflection occurs in the lamp cavity.

[0056] The downward and upward parts of the light emitted by the first light source 31 are blocked by the first light baffle 32 and the second light baffle 42 respectively, and no reflection is generated. The middle part of the light is irradiated obliquely between the first light baffle 32 and the second light baffle 42 on the center line. oooo' On the right half of the Rayleigh scattering plate, part of the short-wave blue light is Rayleigh scattered, making the right part of the Rayleigh scattering plate show a blue sky background effect, and the rest of the blue light and almost all other bands of light are transmitted through the right Rayleigh scattering plate to realize white light illumination, forming a certain regular lighting area within the predetermined range of the right wall.

[0057] The downward and upward parts of the light emitted by the second light source 41 are blocked by the second light baffle 42 and the first light baffle 32 respectively, and no reflection is generated. The middle part of the light is irradiated obliquely between the second light baffle 42 and the first light baffle 32 on the center line. oooo' On the left half of the Rayleigh scattering plate, part of the short-wave blue light is Rayleigh scattered, so that the left part of the Rayleigh scattering plate also shows a blue sky background effect. The remaining blue light and almost all other bands of light are transmitted through the left Rayleigh scattering plate to achieve white light illumination, forming a certain regular lighting area within the predetermined range of the left wall.

[0058] A light beam housing 6 is also provided on the outer surface of the Rayleigh scattering plate 2. The structure of the light beam housing 6 is as follows: Figure 3 , which is arranged in the shape of a "sun" on the edges and center line of the Rayleigh scatter plate 2 oooo' The white acrylic frame at the position is 2cm wide and is used to block the light passing through the Rayleigh scattering plate at this position. oooo' Position The cross section of the white acrylic frame is an isosceles trapezoid, with the long base touching the Rayleigh scattering plate and the short base facing outwards.

[0059] The light beam shells on the edges can more accurately control the light transmitted through the Rayleigh scattering panel and irradiating the wall, ensuring that the light is irradiated within the specified area and the light is uniform and has clear boundaries. The light beam shell in the middle can eliminate the problem of light overlap or light loss, further ensuring the uniformity of the blue sky effect formed by the Rayleigh scattering panel.

[0060] Example 2

[0061] The structure of the blue sky lamp lighting device of this embodiment is as follows Figure 2 As shown, the overall structure is the same as that of Embodiment 1, except that the light-emitting component in the lamp housing 1 of the lighting device is designed to be a completely symmetrical structure.

[0062] The first light source 31 and the second light source 41 are symmetrical about the center line oooo'The first light baffle 32 and the second light baffle 42 are installed on the left and right sides of the top of the lamp housing. The first light baffle 32 and the second light baffle 42 have the same width and are arranged in opposite directions at the top of the lamp housing and outside the first light source and the second light source at the same tilt angle θ.

[0063] The first light baffle 32 and the second light baffle 42 are inclined at an angle θ such that the two light baffles extend downward and intersect the center line of the Rayleigh scattering plate 2 oooo' The width of the first light baffle 32 and the second light baffle 42 makes their bottom ends respectively located on the plane formed by the left bottom edge of the lamp housing and the second light source 41, and on the plane formed by the right bottom edge of the lamp housing and the first light source 31.

[0064] When the blue sky light lighting device with a symmetrical structure design of this embodiment is installed in the middle of the top of a narrow corridor or alley, a symmetrical light-emitting effect can be formed on the walls on both sides.

[0065] Example 3

[0066] Figure 4 The application diagram of the utility model blue sky lamp lighting device in a specific scene is given. The specific scene is a long and narrow corridor with walls on both sides, an indoor height of 250cm and a width of 220cm, which conforms to the actual situation of corridors in daily life.

[0067] In this scenario, the blue sky light lighting device of Example 2 is installed in the middle position of the length direction of the top of the corridor, and the direct lighting range generated by the lighting device is the area between the lower light path 7 and the upper light path 8, and the rest of the area will not be directly illuminated by light.

[0068] Specifically, Figure 4 OACE is the space area covered by the left side of the blue sky lamp lighting device, and CE is the range of the light that can be irradiated on the wall; OBDF is the space area covered by the right side of the blue sky lamp lighting device, and DF is the range of the light that can be irradiated on the wall. Therefore, as long as pedestrians do not enter the above light coverage area, that is, ABDFOEC area, when walking in the corridor, there will be no direct light entering the field of vision, solving the glare problem.

[0069] In daily life, people usually choose to walk in the middle of the corridor rather than close to the walls. According to a survey, the closest distance to the wall for most people when walking is about 40cm. Therefore, the light will be above the pedestrians' heads, and no light will enter their eyes, avoiding the glare caused by light entering the eyes.

[0070] At the same time, if Figure 5 As shown in the actual lighting effect diagram, people passing through the corridor can observe that the lighting devices above their heads emit sky blue light, as if there is a blue sky above their heads.

[0071] The above embodiments of the present invention do not describe all the details in detail, nor do they limit the present invention to the above embodiments. Various changes, modifications, substitutions and variations made by ordinary technicians in this field without departing from the principles and purpose of the present invention should be included in the protection scope of the present invention.

Claims

1. A blue sky lamp lighting device, comprising a lamp housing, a Rayleigh scattering plate and a light-emitting component, wherein the lamp housing is rectangular and has a downward light outlet, a Rayleigh scattering plate is installed at the light outlet at the lower part of the lamp housing, and the light-emitting component is fixedly installed in the cavity of the lamp housing; wherein: Taking the center line of the lamp housing of the Rayleigh scattering plate in the length direction as the boundary, the light-emitting assembly is composed of a first light source and a second light source installed in the lamp housing on both sides of the center line of the lamp housing in the length direction and arranged along the length direction of the lamp housing, and a first light baffle and a second light baffle respectively arranged below the first light source and the second light source and having the same length as the lamp housing; The first light baffle and the second light baffle respectively block the light emitted by the first light source at downward and upward angles, so that the light emitted by the first light source can only pass through the gap between the first light baffle and the second light baffle, and illuminate the Rayleigh scattering plate area between the center line of the lamp housing in the length direction and the bottom edge of the lamp housing in the length direction on the side of the second light baffle; The second light baffle and the first light baffle respectively block the light emitted by the second light source at downward and upward angles, so that the light emitted by the second light source can only pass through the gap between the second light baffle and the first light baffle, and illuminate the Rayleigh scattering plate area between the center line of the lamp housing in the length direction and the bottom edge of the lamp housing in the length direction on the side of the first light baffle.

2. The lighting device according to claim 1, characterized in that The first light source and the second light source are installed in the top of the lamp housing symmetrically with respect to the center line of the length direction of the lamp housing, and the first light baffle and the second light baffle are respectively arranged obliquely on the top of the lamp housing and outside the first light source and the second light source, and the first light baffle and the second light baffle have the same width and have the same angle and opposite inclination angles; The inclination angle is set so that the first light baffle and the second light baffle extend downward and just intersect the center line of the lamp housing in the length direction of the Rayleigh scattering plate; The width is set so that the bottom end of the first light baffle is located on the plane formed by the bottom edge of the lamp housing in the length direction on the first light baffle side and the second light source, and the bottom end of the second light baffle is located on the plane formed by the bottom edge of the lamp housing in the length direction on the second light baffle side and the first light source; Through the cooperation between the first light baffle and the second light baffle, the light emitted by the first light source can only illuminate the Rayleigh scattering plate area between the center line of the lamp shell in the length direction and the bottom edge of the lamp shell in the length direction on the side of the second light baffle, and the light emitted by the second light source can only illuminate the Rayleigh scattering plate area between the center line of the lamp shell in the length direction and the bottom edge of the lamp shell in the length direction on the side of the first light baffle.

3. The lighting device according to claim 1 or 2, characterized in that A light-beam housing is arranged around the Rayleigh scattering plate and on the center line of the lamp housing in the length direction.

4. The lighting device according to claim 1 or 2, characterized in that The inner surface of the lamp housing and the surfaces on both sides of the first light baffle plate and the second light baffle plate are all provided with a black light absorbing layer which prevents the surface from generating light reflection.

5. The lighting device according to claim 4, characterized in that The black light-absorbing layer is a light-absorbing material coating or layer with an irregular rough surface or a porous structure.

6. The lighting device according to claim 5, characterized in that The black light absorbing layer is black felt.

7. The lighting device according to claim 1 or 2, characterized in that The first light source and the second light source are composed of an LED light source, a lens and a reflective cup. The LED light source is installed at the focal position of the reflective cup. The lens is arranged adjacent to the LED light source and located on the light-emitting side of the LED light source so that the light emitted by the LED light source enters the set area of ​​the Rayleigh scattering plate.

8. The lighting device according to claim 1 or 2, characterized in that The inclination angles of the first light blocking plate and the second light blocking plate are 10-80°.

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