Green lamp

Abstract

The invention relates to the field of lighting equipment, and particularly discloses a green lamp which comprises a lamp shell, a blue sky module and a main lighting module, the main lighting module is arranged on the side face of the lamp shell, and the blue sky module is arranged at the top of the lamp shell; the blue sky module comprises a shell, a Rayleigh scattering light guide plate, a reflection unit and a first light source; the Rayleigh scattering light guide plate is arranged in the shell; the reflection unit is arranged on the back of the Rayleigh scattering light guide plate and can reflect light rays emitted from the back of the Rayleigh scattering light guide plate into the Rayleigh scattering light guide plate again on the surfaces with different distances from the back of the Rayleigh scattering light guide plate; the first light source is arranged on one side of the Rayleigh scattering light guide plate; the main lighting module comprises a reflective bowl and a second light source. The blue sky effect can be formed, the independent lighting module is arranged, the brightness in the irradiation range is uniform, the appearance is slim, and installation in a narrow space is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to a lighting device, in particular to a blue sky lamp. BACKGROUND

[0002] With the development of economy and the improvement of people's living standards, a healthy living environment has become the pursuit of the public. For lighting devices, simulating natural light is the biggest challenge. In this environment, the blue sky lamp emerged as the times require. The main effect of this lamp is to simulate the visual effect of the sky, providing a skylight-like lighting effect for the space that cannot be irradiated by sunlight indoors.

[0003] The blue sky lamp in the prior art is mostly inclined to the Rayleigh scattering plate to achieve the visual effect of simulating the sky. In order to make the scattering plate light effect uniform, the light source and the light outlet need to maintain a large distance, resulting in a large overall thickness of the lamp. At the same time, this sky effect is relatively flat, which has a large gap with the real clear sky. SUMMARY

[0004] In order to solve the defects of the prior art, the present application provides a blue sky lamp which can form a blue sky effect, has an independent lighting module, the brightness in the irradiation range is uniform, and the appearance is thin, which is beneficial to installation in narrow space.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a blue sky lamp, which comprises a lamp shell, a blue sky module and a main lighting module, the main lighting module is arranged on the side of the lamp shell, and the blue sky module is arranged on the top of the lamp shell; the blue sky module comprises a shell, a Rayleigh scattering light guide plate, a reflection unit and a first light source; the Rayleigh scattering light guide plate is arranged in the shell; the reflection unit is arranged on the back of the Rayleigh scattering light guide plate and can reflect light emitted from the back of the Rayleigh scattering light guide plate into the Rayleigh scattering light guide plate at different distances from the back of the Rayleigh scattering light guide plate; the first light source is arranged on one side of the Rayleigh scattering light guide plate and can emit light into the Rayleigh scattering light guide plate from the side of the Rayleigh scattering light guide plate.

[0006] The main lighting module comprises a reflector bowl and a second light source, the second light source can emit light to the reflector bowl, and the reflector bowl can reflect the incident light and emit it from the light outlet of the lamp shell.

[0007] As an improvement of the above scheme, the surface of the second light source is provided with a lens, the surface of the second light source is flush with one side edge of the reflector bowl, the reflector bowl has a reflection curved surface, and the curvature of the reflection curved surface gradually decreases from the side close to the second light source to the side away from the light source.

[0008] As an improvement to the above solution, the reflective bowl is composed of several reflective units arranged horizontally and vertically, and the reflective unit has a reflective curved surface that convexes in the direction of reflection.

[0009] As an improvement to the above solution, the reflector bowl is composed of several horizontally adjacent reflective modules, each of which is provided with a second light source; the curvature of the reflective module gradually decreases from the side closer to the corresponding second light source to the side farther away from the corresponding second light source.

[0010] As an improvement to the above solution, the reflective module is composed of several reflective units arranged horizontally and vertically, and the reflective unit has a reflective curved surface that convexes in the reflection direction.

[0011] As an improvement to the above scheme, the reflective unit is a semi-transparent and semi-reflective plate.

[0012] As an improvement to the above solution, the back of the semi-transparent and semi-reflective plate is also provided with a black light-absorbing layer.

[0013] As an improvement to the above solution, the Rayleigh scattering light guide plate, the semi-transparent and semi-reflective plate and the black light-absorbing layer are arranged in close contact with each other, or a predetermined gap is provided between the Rayleigh scattering light guide plate and the semi-transparent and semi-reflective plate.

[0014] As an improvement to the above solution, the reflective unit is a mirror layer, and the Rayleigh scattering light guide plate is also provided with a diffuser plate on the front side.

[0015] As an improvement to the above solution, the reflective unit is a second diffuser plate, and the Rayleigh scattering light guide plate is also provided with a diffuser plate on its front side.

[0016] Implementing the embodiments of the present invention has the following beneficial effects:

[0017] This blue sky light uses a new simulated sky vision optical system and a self-designed reflector bowl main lighting system. The combination of the two creates a blue sky lighting device with a deep blue sky effect. It has an independent lighting module, uniform brightness within the illumination range, and a slim shape, which is conducive to installation in narrow spaces. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of an embodiment of a blue sky lamp according to the present invention;

[0019] Figure 2 This is a schematic diagram of an embodiment of the main lighting module of the present invention;

[0020] Figure 3 This is a partial structural schematic diagram of an embodiment of the main lighting module of the present invention;

[0021] Figure 4 yes Figure 3 Enlarged view of part A;

[0022] Figure 5 This is a schematic diagram of the structure of a blue sky module according to an embodiment of the present invention;

[0023] Figure 6 This is an optical path diagram of a blue sky module according to an embodiment of the present invention;

[0024] Figures 7-10 These are schematic diagrams illustrating the structure of different embodiments of the blue sky module of the present invention; Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It is hereby declared that the directional terms such as up, down, left, right, front, back, inside, and outside used in this text are based solely on the accompanying drawings and are not intended to specifically limit the invention.

[0026] like Figure 1 and Figure 5 As shown, the first embodiment of the present invention provides a blue sky lamp, including a lamp housing 1, a blue sky module 2, and a main lighting module 3. The main lighting module 3 is disposed on the side of the lamp housing 1, and the blue sky module 2 is disposed on the top of the lamp housing 1. The blue sky module 2 includes a housing 21, a Rayleigh scattering light guide plate 22, a reflection unit, and a first light source 4. The Rayleigh scattering light guide plate 22 is disposed in the housing 21. The reflection unit is disposed on the back of the Rayleigh scattering light guide plate 22 and can reflect light emitted from the back of the Rayleigh scattering light guide plate 22 back into the Rayleigh scattering light guide plate 22 at surfaces at different distances from the back of the Rayleigh scattering light guide plate 22. The first light source 4 is disposed on one side of the Rayleigh scattering light guide plate 22 and can direct light from the side of the Rayleigh scattering light guide plate 22 into the Rayleigh scattering light guide plate 22.

[0027] The main lighting module 3 includes a reflector bowl 31 and a second light source 32. The second light source 32 can direct light towards the reflector bowl 31, and the reflector bowl 31 can reflect the incoming light and emit it from the light outlet of the lamp housing 1.

[0028] Specifically, the lamp housing 1 is rectangular and has an internal cavity. The main lighting module 3 is located on one side of the cavity, the blue sky module 2 is located on the top of the cavity, and the bottom of the cavity is open.

[0029] This blue sky light uses a new simulated sky vision optical system and a self-designed reflector bowl main lighting system. The combination of the two creates a blue sky lighting device with a deep blue sky effect. It has an independent lighting module, uniform brightness within the illumination range, and a slim shape, which is conducive to installation in narrow spaces.

[0030] According to one embodiment of the main lighting module 3 of the present invention, a lens 33 is provided on the surface of the second light source 32, and the surface of the second light source 32 is flush with one edge of the reflector bowl 31. The reflector bowl 31 has a reflective arc surface 311, the curvature of which gradually decreases from the side closer to the second light source 32 to the side farther away from the second light source 32. The light emitted from the second light source 32 is converged by the convex lens 33, narrowing the light angle to 60° so that all the light is irradiated onto the reflector bowl 31, reducing light scattering, increasing light efficiency, and avoiding stray light in the light spot. In this embodiment, the reflector bowl 31 has a reflective arc surface 311, the curvature of which gradually decreases from the side closer to the second light source 32 to the side farther away from the light source, which can irradiate a rectangular light spot.

[0031] According to another embodiment of the main lighting module 3 of the present invention, the reflector bowl 31 is composed of a plurality of reflective units 312 arranged horizontally and vertically, and the reflective unit 312 has a reflective curved surface convex in the reflection direction. By using reflective units 312 with reflective curved surfaces convex in the reflection direction to form the reflector bowl 31, the emitted light pattern of the main lighting module 3 can be better controlled, making the light spot effect on the wall sharper and more regular.

[0032] like Figure 2 As shown, in another embodiment of the main lighting module 3 according to the present invention, the reflector bowl is composed of a plurality of laterally adjacent reflective modules 313, each of the reflective modules 313 being provided with a corresponding second light source 32; the curvature of the reflective module 313 gradually decreases from the side closer to the corresponding second light source 32 to the side farther away from the corresponding light source. By using a plurality of laterally adjacent reflective modules 313 to form a reflector bowl 31, compared with the reflector bowl 31 structure of other embodiments which has a uniformly varying curvature in all directions, each of the reflective modules 313 being provided with a corresponding second light source 32, the illumination range of each reflective module 313 can be independently controlled, thereby forming a uniformly illuminated regular light spot, such as a square light spot, through the partial superposition of the illumination range of each reflective module 313, resulting in good lighting effect.

[0033] Combination Figure 3 and Figure 4Preferably, the reflective module 313 can also be composed of several horizontally and vertically arranged reflective units 312, each reflective unit 312 having a reflective curved surface 314 protruding in the reflection direction. This structure absorbs the advantages of the previous main lighting module embodiment. The reflective module 313 is composed of reflective units 312 with reflective curved surfaces 314 protruding in the reflection direction. The reflective modules 313 are horizontally adjacent to form a roughly rectangular reflective bowl 31 with reflective curved surfaces 314 protruding in the reflection direction. This allows for fine-tuning and controlled dispersion of the incident light, resulting in good light focusing and high light output efficiency. When this lighting module is installed on the side of the blue sky module 2, the lamp can produce a blue sky effect while also illuminating a sharp rectangular light spot on the wall, achieving the effect of simulating the sun penetrating through a window and illuminating the room.

[0034] In one embodiment of the present invention, the housing 21 may be an aluminum housing; the reflecting unit is a semi-transparent and semi-reflective plate 23, and the Rayleigh scattering light guide plate 22 and the semi-transparent and semi-reflective plate 23 may be made of materials such as PC, acrylic, or glass. The thickness of the Rayleigh scattering light guide plate 22 is 4-6 mm, preferably 5 mm. The thickness of the semi-transparent and semi-reflective plate 23 is 1.5-3.5 mm, preferably 2.5 mm. A high-transmittance transparent plate 25 may also be disposed on the surface of the Rayleigh scattering light guide plate 22 to protect the internal components such as the Rayleigh scattering light guide plate 22. The first light source 4 is disposed on one side of the Rayleigh scattering light guide plate 22 in the form of side emission. The color temperature of the first light source 4 is 6880-8100K, the dominant wavelength is 484nm, and its red ratio is 15.1%, green ratio is 78.2%, and blue ratio is 6.6%.

[0035] like Figure 6As shown, when the first light source 4 is turned on, light enters the Rayleigh scattering light guide plate 22, where it is scattered by the surface of the micro-nano particles inside, causing the light-emitting surface to appear as if it were a blue sky. At this time, a lux meter is used to test the light-emitting surface, and the results show a red ratio of 12.6%, a green ratio of 35.9%, and a blue ratio of 51.5%, with a significant increase in the blue ratio. Some light is refracted downwards onto the semi-transparent and semi-reflective plate 23, undergoing multiple reflections, creating a superimposed blue sky effect when the human eye observes the lamp, resulting in a more three-dimensional visual effect. Specifically, when light reaches the surface of the semi-transparent and semi-reflective plate 23, half of the light is directly reflected and re-enters the Rayleigh scattering light guide plate 22. The remaining light undergoes two or more reflections within the semi-transparent and semi-reflective plate 23 before entering the Rayleigh scattering light guide plate 22. Because some of the energy of this portion of light is absorbed by the semi-transparent and semi-reflective plate 23, its intensity is weakened. Simultaneously, the increased number of reflections lengthens the light path, creating the illusion of distant light shining at the observer's perspective. The light emitted directly from Rayleigh scattering light guide plate 22, the light emitted from Rayleigh scattering light guide plate 22 after one reflection by semi-transparent and semi-reflective plate 23, and the light emitted from Rayleigh scattering light guide plate 22 after more than two reflections inside semi-transparent and semi-reflective plate 23, all mix to create the feeling of a deep sky.

[0036] The Blue Sky Module 2 utilizes a high degree of modularity, thinness, and ease of installation and maintenance, reducing the size of the sky light and facilitating its adoption in smaller buildings. This structure allows for the intentional division of light into different groups, creating various light clusters through controlled refraction and reflection. These light clusters then mix and diffuse, creating a deep blue sky effect with realistic simulation, allowing users to experience the sky and sunlight indoors and regulating their mood.

[0037] In this embodiment, the high-transmittance transparent plate 25, the Rayleigh scattering light guide plate 22, and the semi-transparent and semi-reflective plate 23 can be closely attached to each other to reduce the overall thickness. In another embodiment, such as Figure 8 As shown, a predetermined gap of 1-1.5mm is provided between the Rayleigh scattering light guide plate 22 and the semi-transparent and semi-reflective plate 23. Setting the above gap can avoid watermark problems between the plates and improve the presentation effect of this blue sky simulation module.

[0038] Combination Figure 7As shown, the second embodiment of the present invention provides a sky light, which differs from the first embodiment in that a black light-absorbing layer 26 is provided on the back of the semi-transparent and semi-reflective plate 23. The black light-absorbing layer 26 is a black light-absorbing velvet cloth. Utilizing the multi-layered microstructure of the velvet cloth, it can absorb light while producing minute reflections at different depths, enhancing the sense of depth in the sky effect. Furthermore, using black light-absorbing velvet cloth increases the contrast between blue and black when the human eye looks directly at the blue sky, making the blue sky appear deeper. Correspondingly, to increase or decrease the effect of the black light-absorbing layer 26, the black light-absorbing layer 26 can also be made of materials such as black coating, carbon nanotubes, black TiO2 nanomaterials, or black plastic, depending on the requirements.

[0039] When the first light source 4 is turned on, light enters the Rayleigh scattering light guide plate 22, where it is scattered by the micro-nano particles inside, creating a blue sky effect on its light-emitting surface. A lux meter is used to test the light-emitting surface, revealing a red ratio of 12.6%, a green ratio of 35.9%, and a blue ratio of 51.5%, showing a significant improvement in the blue ratio. Some light is refracted downwards onto the semi-transparent reflective plate 23, undergoing multiple reflections, creating a superimposed blue sky effect when the human eye observes the light fixture, enhancing its three-dimensionality. Specifically, when light reaches the surface of the semi-transparent reflective plate 23, half of the light is directly reflected back into the Rayleigh scattering light guide plate 22, while the remaining light passes through the semi-transparent reflective plate 23 and is absorbed by the black light-absorbing layer 26. The mixture of the light directly emitted from the Rayleigh scattering light guide plate 22 and the light emitted from the Rayleigh scattering light guide plate 22 after one reflection by the semi-transparent reflective plate 23 creates the feeling of a deep sky.

[0040] This embodiment features high modularity, thinness, and convenient installation and maintenance, reducing the size of the sky light and facilitating its adoption in smaller buildings. The structure allows for the deliberate division of light into different groups, creating various light clusters through controlled refraction and reflection. These light clusters then blend to create a deep blue sky effect, providing a realistic simulation that allows users to experience the sky and sunlight indoors, thus regulating their mood.

[0041] like Figure 9As shown, the third embodiment of the present invention provides a blue sky lamp. The difference from the first embodiment is that the Rayleigh scattering light guide plate 22 has a diffuser plate 27 on its surface. The diffuser plate 27 can be a Rayleigh scattering diffuser plate. The reflecting unit is a mirror layer 28; the housing 21 can be an aluminum housing, and the mirror layer 28 is an aluminum mirror formed by polishing the bottom surface of the aluminum housing. Of course, other materials can also be used to form the mirror structure as needed. When the first light source 4 is turned on, light enters the Rayleigh scattering light guide plate 22 and is scattered on the surface of the micro-nano particles inside, causing its light-emitting surface to exhibit a blue sky effect. Some light is refracted downwards onto the mirror layer 28, and after reflection, re-enters the Rayleigh scattering light guide plate 22. The light directly emitted from the Rayleigh scattering light guide plate 22 and the light reflected by the mirror layer 28 and then emitted from the Rayleigh scattering light guide plate 22 enter the diffuser plate 27, producing a certain amount of scattering. This creates a visual effect of superimposed blue sky effects when the human eye observes the lamp, making it more three-dimensional. In this embodiment, the inner surface of the housing 21 is a mirrored aluminum surface, replacing the reflective effect of the semi-transparent, semi-reflective plate 23, and is used in conjunction with the diffuser plate 27. This solution also solves the problem of watermarks caused by the adhesion of the sheet material, while the surface of the diffuser plate 27 is scratch-resistant and does not easily attract dust. The blue sky effect has a higher proportion of blue, making the "sky" bluer. At the same time, the number of sheet materials is reduced, the overall module is thinner and lighter, and the ease of assembly is improved.

[0042] This embodiment features high modularity, thinness, and convenient installation and maintenance, reducing the size of the sky light and facilitating its adoption in smaller buildings. The structure allows for the deliberate division of light into different groups, creating various light clusters through controlled refraction and reflection. These light clusters then blend to create a deep blue sky effect, providing a realistic simulation that allows users to experience the sky and sunlight indoors, thus regulating their mood.

[0043] like Figure 10 As shown, the fourth embodiment of the present invention provides a blue sky lamp, which differs from the above embodiment in that the Rayleigh scattering light guide plate 22 is provided with a diffuser plate 27 on its surface, and the diffuser plate 27 can be a Rayleigh scattering diffuser plate 27; the reflecting unit is a second diffuser plate 29.

[0044] When the first light source 4 is turned on, light enters the Rayleigh scattering light guide plate 22, where it is scattered on the surface of the micro-nano particles inside, giving its light-emitting surface a blue sky effect. Some light is refracted downwards onto the second diffuser plate 29, where it is scattered again. Some light is refracted or reflected and re-enters the Rayleigh scattering light guide plate 22. The light directly emitted from the Rayleigh scattering light guide plate 22 and the light refracted or reflected by the second diffuser plate 29 then emitted from the Rayleigh scattering light guide plate 22 enter the diffuser plate 27, producing a certain degree of scattering. This creates a visual effect of superimposed blue sky effects when the human eye observes the lamp, enhancing its three-dimensionality. In this embodiment, the second diffuser plate 29 replaces the reflective effect of the mirror layer 28, and is paired with the diffuser plate 27 located in front of the Rayleigh scattering light guide plate 22. This solution also solves the problem of watermarks caused by material adsorption. This solution weakens the depth of the blue sky simulation module, but the lamp will appear as a pale blue color when the main light is off.

[0045] This embodiment features high modularity, thinness, and convenient installation and maintenance, reducing the size of the sky light and facilitating its adoption in smaller buildings. The structure allows for the deliberate division of light into different groups, creating various light clusters through controlled refraction and reflection. These light clusters then blend to create a deep blue sky effect, providing a realistic simulation that allows users to experience the sky and sunlight indoors, thus regulating their mood.

[0046] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A blue sky lamp, characterized in that, Includes the lamp housing, the blue sky module, and the main lighting module. The main lighting module is located on the side of the lamp housing, and the blue sky module is located on the top of the lamp housing; The blue sky module includes a housing, a Rayleigh scattering light guide plate, a reflection unit, and a first light source; The Rayleigh scattering light guide plate is disposed in the housing; The reflective unit is located on the back of the Rayleigh scattering light guide plate, and can reflect light emitted from the back of the Rayleigh scattering light guide plate back into the Rayleigh scattering light guide plate at surfaces at different distances from the back of the Rayleigh scattering light guide plate. The first light source is located on one side of the Rayleigh scattering light guide plate, and can direct light from the side of the Rayleigh scattering light guide plate into the Rayleigh scattering light guide plate; The main lighting module includes a reflector bowl and a second light source. The second light source can direct light towards the reflector bowl, which can reflect the incoming light and emit it from the light outlet of the lamp housing.

2. The blue sky lamp as described in claim 1, characterized in that, The second light source surface is provided with a lens, and the second light source surface is flush with one side edge of the reflector bowl. The reflector bowl has a reflective arc surface, and the curvature of the reflective arc surface gradually decreases from the side closer to the second light source to the side farther away from the light source.

3. The blue sky lamp as described in claim 2, characterized in that, The reflective bowl is composed of several reflective units arranged neatly in the horizontal and vertical directions, and each reflective unit has a reflective curved surface that convexes in the direction of reflection.

4. The blue sky lamp as described in claim 2, characterized in that, The reflector bowl is composed of several horizontally adjacent reflective modules, and each reflective module is provided with a second light source; the curvature of the reflective module gradually decreases from the side closer to the corresponding second light source to the side farther away from the corresponding second light source.

5. The blue sky lamp as described in claim 4, characterized in that, The reflective module consists of several reflective units arranged neatly in a horizontal and vertical direction, and each reflective unit has a reflective curved surface that bulges in the direction of reflection.

6. The blue sky lamp as described in claim 4, characterized in that, The reflective unit is a semi-transparent, semi-reflective plate.

7. The blue sky lamp as described in claim 6, characterized in that, The back of the semi-transparent and semi-reflective plate is also provided with a black light-absorbing layer.

8. The blue sky lamp as described in claim 7, characterized in that, The Rayleigh scattering light guide plate, the semi-transparent and semi-reflective plate and the black light-absorbing layer are arranged in close contact with each other, or a predetermined gap is provided between the Rayleigh scattering light guide plate and the semi-transparent and semi-reflective plate.

9. The blue sky lamp as described in claim 4, characterized in that, The reflective unit is a mirror layer, and the Rayleigh scattering light guide plate also has a diffuser plate on its front side.

10. The blue sky lamp as described in claim 4, characterized in that, The reflective unit is a second diffuser plate, and the Rayleigh scattering light guide plate also has a diffuser plate on its front side.

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