Blue sky simulation module and lamp

Abstract

The utility model relates to the field of lighting equipment, and particularly discloses a blue sky simulation module which comprises a shell. 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; the 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 face of the Rayleigh scattering light guide plate. The embodiment of the utility model further discloses a lamp. The blue sky effect can be simulated, the modularization degree is high, the thickness is small, and installation and maintenance are convenient.

Description

Technical Field

[0001] The utility model relates to the field of lighting equipment, in particular to a blue sky simulation module and a lamp. Background Art

[0002] With economic development and rising living standards, a healthy living environment has become a popular pursuit. Simulating natural light poses a significant challenge for lighting devices. In this context, skylights have emerged. These fixtures simulate the visual effect of the sky, providing skylight-like lighting for indoor spaces shielded from sunlight.

[0003] Most of the blue sky lights in the existing technology use a light source to obliquely illuminate a Rayleigh scattering plate to achieve a visual effect of simulating the sky. The blue sky effect presented by this method is relatively hazy, and it is difficult to achieve a clear blue sky effect. At the same time, the lamp body is large in size, occupies a large area and is not conducive to installation. Utility Model Content

[0004] In order to solve the defects of the prior art, the utility model provides a blue sky simulation module and a lamp, which can simulate the blue sky effect, have a high degree of modularity, a thin thickness, and are easy to install and maintain.

[0005] In order to solve the above technical problems, the present invention provides a blue sky simulation module, comprising

[0006] case;

[0007] A Rayleigh scattering light guide plate is provided in the housing;

[0008] a reflecting unit, provided at the back of the Rayleigh scattering light guide plate, capable of reflecting light emitted from the back of the Rayleigh scattering light guide plate back into the Rayleigh scattering light guide plate;

[0009] The light source is provided on one side of the Rayleigh scattering light guide plate and can emit light into the Rayleigh scattering light guide plate from the side surface of the Rayleigh scattering light guide plate.

[0010] As an improvement to the above solution, the reflection unit is a semi-transparent and semi-reflective plate.

[0011] As an improvement to the above solution, a black light-absorbing layer is further provided on the back of the transflective plate.

[0012] 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 closely to each other.

[0013] As an improvement to the above solution, a predetermined gap is provided between the Rayleigh scattering light guide plate and the semi-transmissive and semi-reflective plate.

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

[0015] As an improvement to the above solution, the reflecting unit is a second diffuser plate, and a diffuser plate is further provided on the front side of the Rayleigh scattering light guide plate.

[0016] As an improvement to the above solution, the thickness of the Rayleigh scattering light guide plate is 4-6 mm, and the thickness of the semi-transparent and semi-reflective plate is 1.5-3.5 mm.

[0017] As an improvement of the above-mentioned solution, the shell includes a bottom plate and side plates that wrap the bottom and side surfaces of the Rayleigh scattering light guide plate and the reflection unit, the top of the side plate is horizontally bent inward to form a limiting pressure edge, and the limiting pressure edge presses the front edge of the Rayleigh scattering light guide plate; a light source accommodating cavity is provided between the side plate and the Rayleigh scattering light guide plate, and the light source is provided in the light source accommodating cavity.

[0018] Correspondingly, an embodiment of the present invention further provides a lamp provided with the blue sky simulation module as described above.

[0019] The implementation of the present invention has the following beneficial effects:

[0020] This embodiment offers a high degree of modularity, a thin profile, and easy installation and maintenance. This reduces the size of the skylight, making it easier to deploy in smaller buildings. This structure allows for the deliberate division of light into different groups, controlled by refraction and reflection. These light groups then blend and diffuse, creating a deep, blue sky effect. This realistic simulation allows users to experience the sky and sunlight indoors, enhancing their mood. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a first embodiment of a blue sky simulation module of the present utility model;

[0022] Figure 2 This is a cross-sectional view of a first embodiment of a blue sky simulation module of the present utility model;

[0023] Figure 3 This is a light path simulation diagram of the first embodiment of a blue sky simulation module of the utility model;

[0024] Figure 4 This is a cross-sectional view of a second embodiment of a blue sky simulation module of the present invention;

[0025] Figure 5 This is a cross-sectional view of another assembly method of the second embodiment of the blue sky simulation module of the present invention;

[0026] Figure 6 This is a cross-sectional view of a third embodiment of a blue sky simulation module of the present utility model;

[0027] Figure 7 It is a cross-sectional view of a fourth embodiment of a blue sky simulation module of the present utility model. DETAILED DESCRIPTION

[0028] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that any directional terms such as "up," "down," "left," "right," "front," "back," "inside," and "outside" that appear or will appear in this document are based solely on the accompanying drawings and are not intended to limit the present invention.

[0029] Example 1

[0030] like Figure 1-Figure 3 As shown, the first embodiment of the present utility model provides a blue sky simulation module, including a housing 1;

[0031] A Rayleigh scattering light guide plate 2 is provided in the housing 1;

[0032] The reflecting unit is provided on the back of the Rayleigh scattering light guide plate 2 and can reflect the light emitted from the back of the Rayleigh scattering light guide plate 2 back into the Rayleigh scattering light guide plate 2 at surfaces at different distances from the back of the Rayleigh scattering light guide plate 2; the reflecting unit is a semi-transparent and semi-reflective plate 3.

[0033] The light source 4 is disposed on one side of the Rayleigh scattering light guide plate 2 and can emit light into the Rayleigh scattering light guide plate 2 from the side of the Rayleigh scattering light guide plate 2 .

[0034] In this embodiment, the shell 1 can be an aluminum shell 1; the Rayleigh scattering light guide plate 2 and the semi-transparent and semi-reflective plate 3 can be made of materials such as PC, acrylic or glass. The thickness of the Rayleigh scattering light guide plate 2 is 4-6 mm, preferably 5 mm. The thickness of the semi-transparent and semi-reflective plate 3 is 1.5-3.5 mm, preferably 2.5 mm. A layer of highly transparent plate 5 can also be provided on the surface of the Rayleigh scattering light guide plate 2 to protect internal components such as the Rayleigh scattering light guide plate 2. The light source 4 is provided on one side of the Rayleigh scattering light guide plate 2 in the form of side light emission. The color temperature of the light source 4 used is 6880-8100K, the main wavelength is 484 nm, the red ratio is 15.1%, the green ratio is 78.2%, and the blue ratio is 6.6%.

[0035] When the light source 4 is turned on, the light enters the Rayleigh scattering light guide plate 2 and is scattered on the surface of the micro-nanoparticles inside it, causing the light-emitting surface to present a blue sky effect. At this time, the light-emitting surface is tested with an illuminance meter, and its red ratio is 12.6%, green ratio is 35.9%, and blue ratio is 51.5%, which means that the blue ratio has been greatly improved. Part of the light is refracted downward onto the semi-transparent and semi-reflective plate 3, and after multiple reflections, the human eye sees a superimposed blue sky effect when observing the lamp, which is more three-dimensional. Specifically, when the light reaches the surface of the semi-transparent and semi-reflective plate 3, half of the light will be directly reflected and re-enter the Rayleigh scattering light guide plate 2, and the remaining light will be reflected twice or more in the semi-transparent and semi-reflective plate 3 before entering the Rayleigh scattering light guide plate 2. Since part of the energy of this part of the light is absorbed by the semi-transparent and semi-reflective plate 3, its intensity will be weakened. At the same time, the light path becomes longer due to the increase in the number of reflections, forming a feeling of distant light exposure at the observer. The above light directly emitted from the Rayleigh scattering light guide plate 2, the light emitted from the Rayleigh scattering light guide plate 2 after one reflection through the semi-transparent and semi-reflective plate 3, and the light emitted from the Rayleigh scattering light guide plate 2 after two or more reflections inside the semi-transparent and semi-reflective plate 3 are mixed to form a feeling of a deep sky.

[0036] This embodiment offers a high degree of modularity, a thin profile, and easy installation and maintenance. This reduces the size of the skylight, making it easier to deploy in smaller buildings. This structure allows for the deliberate division of light into different groups, controlled by refraction and reflection. These light groups then blend and diffuse, creating a deep, blue sky effect. This realistic simulation allows users to experience the sky and sunlight indoors, enhancing their mood.

[0037] In this embodiment, the highly transparent plate 5, Rayleigh scattering light guide plate 2, and transflective plate 3 can be placed in close proximity to each other to reduce the overall thickness. In another embodiment, a predetermined gap of 1-1.5 mm is provided between the Rayleigh scattering light guide plate 2 and the transflective plate 3. This gap prevents watermarks between the plates and improves the presentation quality of the blue sky simulation module.

[0038] Preferably, the housing 1 includes a bottom plate 11 and side plates 12 that enclose the bottom and side surfaces of the Rayleigh scattering light guide plate 2 and the reflective unit. The top of the side plate 12 is horizontally bent inward to form a limiting pressure edge 13, which presses the front edge of the Rayleigh scattering light guide plate 2. A light source accommodating cavity 14 is provided between the side plate 12 and the Rayleigh scattering light guide plate 2, and the light source 4 is disposed in the light source accommodating cavity 14. By adopting this structure, the various components can be enclosed in the square housing 1, achieving a strong sense of integrity. This module does not require any additional connection structures such as bolts, making it easy to assemble and reliable.

[0039] Example 2

[0040] like Figure 4 As shown, the second embodiment of the present utility model provides a blue sky simulation module, including a housing 1;

[0041] A Rayleigh scattering light guide plate 2 is provided in the housing 1;

[0042] a reflective unit disposed on the back of the Rayleigh scattering light guide plate 2, capable of reflecting light emitted from the back of the Rayleigh scattering light guide plate 2 back into the Rayleigh scattering light guide plate 2 at surfaces at different distances from the back of the Rayleigh scattering light guide plate 2; the reflective unit is a semi-transparent and semi-reflective plate 3, having a light transmittance of 50% and a reflectivity of 50%;

[0043] A black light-absorbing layer 6 is provided on the back of the transflective plate 3;

[0044] The light source 4 is disposed on one side of the Rayleigh scattering light guide plate 2 and can emit light into the Rayleigh scattering light guide plate 2 from the side of the Rayleigh scattering light guide plate 2 .

[0045] In this embodiment, the shell 1 can be an aluminum shell 1; the Rayleigh scattering light guide plate 2 and the semi-transparent and semi-reflective plate 3 can be made of materials such as PC, acrylic or glass. The thickness of the Rayleigh scattering light guide plate 2 is 4-6 mm, preferably 5 mm. The thickness of the semi-transparent and semi-reflective plate 3 is 1.5-3.5 mm, preferably 2.5 mm. A layer of highly transparent plate 5 can also be provided on the surface of the Rayleigh scattering light guide plate 2 to protect internal components such as the Rayleigh scattering light guide plate 2. The light source 4 is provided on one side of the Rayleigh scattering light guide plate 2 in the form of side light emission. The color temperature of the light source 4 used is 6880-8100K, the main wavelength is 484 nm, the red ratio is 15.1%, the green ratio is 78.2%, and the blue ratio is 6.6%.

[0046] In this embodiment, the black light-absorbing layer 6 is made of black light-absorbing velvet. The multi-layered microstructure of the black light-absorbing velvet absorbs light while producing subtle reflections at varying depths, enhancing the layered effect of the sky. Furthermore, the use of black light-absorbing velvet increases the contrast between blue and black when the human eye looks directly at the blue sky, making the blue sky appear more profound. Accordingly, to enhance or reduce the effect of the black light-absorbing layer 6, the black light-absorbing layer 6 can also be made of materials such as black paint, carbon nanotubes, black TiO2 nanomaterials, and black plastic, as needed.

[0047] When the light source 4 is turned on, the light enters the Rayleigh scattering light guide plate 2 and is scattered on the surface of the micro-nanoparticles inside it, causing the light-emitting surface to present a blue sky effect. At this time, the light-emitting surface is tested with an illuminance meter, and the red ratio is 12.6%, the green ratio is 35.9%, and the blue ratio is 51.5%. The blue ratio has been greatly improved. Part of the light is refracted downward onto the semi-transparent and semi-reflective plate 3, and after multiple reflections, the human eye sees a superimposed blue sky effect when observing the lamp, which is more three-dimensional. Specifically, when the light reaches the surface of the semi-transparent and semi-reflective plate 3, half of the light will be directly reflected and re-enter the Rayleigh scattering light guide plate 2, and the remaining light will pass through the semi-transparent and semi-reflective plate 3 and be absorbed by the black light-absorbing layer 6. The above light emitted directly from the Rayleigh scattering light guide plate 2 and the light emitted from the Rayleigh scattering light guide plate 2 after one reflection from the semi-transparent and semi-reflective plate 3 are mixed to form the feeling of a deep sky.

[0048] This embodiment offers a high degree of modularity, a thin profile, and easy installation and maintenance. This reduces the size of the skylight, making it easier to deploy in smaller buildings. This structure allows for the deliberate division of light into different groups, controlled by refraction and reflection. These light groups blend together to create a deep, blue sky effect. This realistic simulation allows users to experience the sky and sunlight indoors, enhancing their mood.

[0049] In this embodiment, the high light transmittance transparent plate 5, the Rayleigh scattering light guide plate 2 and the semi-transparent and semi-reflective plate 3 can be placed close to each other to reduce the overall thickness. Figure 5 As shown, in another embodiment, a predetermined gap is provided between the Rayleigh scattering light guide plate 2 and the semi-transparent and semi-reflective plate 3, and the gap is 1-1.5 mm. Setting the above gap can avoid the problem of watermarks between the plates and improve the presentation effect of the blue sky simulation module.

[0050] Preferably, the housing 1 includes a bottom plate 11 and side plates 12 that enclose the bottom and side surfaces of the Rayleigh scattering light guide plate 2 and the reflective unit. The top of the side plate 12 is horizontally bent inward to form a limiting pressure edge 13, which presses the front edge of the Rayleigh scattering light guide plate 2. A light source accommodating cavity 14 is provided between the side plate 12 and the Rayleigh scattering light guide plate 2, and the light source 4 is disposed in the light source accommodating cavity 14. By adopting this structure, the various components can be enclosed in the square housing 1, achieving a strong sense of integrity. This module does not require any additional connection structures such as bolts, making it easy to assemble and reliable.

[0051] Example 3

[0052] like Figure 6 As shown, the third embodiment of the present utility model provides a blue sky simulation module, including a housing 1;

[0053] A diffuser plate 7, wherein the diffuser plate 7 may be a Rayleigh scattering diffuser plate;

[0054] A Rayleigh scattering light guide plate 2 is provided in the housing 1;

[0055] a reflective unit, provided on the back of the Rayleigh scattering light guide plate 2, capable of reflecting light emitted from the back of the Rayleigh scattering light guide plate 2 back into the Rayleigh scattering light guide plate 2 at surfaces at different distances from the back of the Rayleigh scattering light guide plate 2; the reflective unit is a mirror layer 8;

[0056] The light source 4 is disposed on one side of the Rayleigh scattering light guide plate 2 and can emit light into the Rayleigh scattering light guide plate 2 from the side of the Rayleigh scattering light guide plate 2 .

[0057] In this embodiment, the shell 1 can be an aluminum shell 1, and the mirror layer 8 is an aluminum mirror formed by grinding and polishing the bottom surface of the aluminum shell 1. Of course, other materials can also be used to form a mirror structure as needed; the Rayleigh scattering light guide plate 2 can be made of materials such as PC, acrylic or glass. The thickness of the Rayleigh scattering light guide plate 2 is 4-6 mm, preferably 5 mm. The thickness of the diffuser 7 is 3 mm. The light source 4 is arranged on one side of the Rayleigh scattering light guide plate 2 in the form of side light. The color temperature of the light source 4 used is 6880-8100K, the main wavelength is 484nm, and its red ratio is 15.1%, the green ratio is 78.2%, and the blue ratio is 6.6%.

[0058] When the light source 4 is turned on, the light enters the Rayleigh scattering light guide plate 2 and is scattered on the surface of the micro-nanoparticles inside it, causing the light-emitting surface to present a blue sky effect. Part of the light is refracted downward onto the mirror layer 8, and after reflection, it re-enters the Rayleigh scattering light guide plate 2. The light emitted directly from the Rayleigh scattering light guide plate 2 and the light reflected by the mirror layer 8 and then emitted from the Rayleigh scattering light guide plate 2 enter the diffuser 7, causing a certain amount of scattering, so that when the human eye observes the lamp, there appears a superimposed visual effect of the blue sky effect, which is more three-dimensional. The inner surface of the shell 1 of this embodiment is a mirrored aluminum surface, which replaces the reflective effect of the semi-transparent and semi-reflective plate 3 and cooperates with the diffuser 7. This solution can also solve the problem of watermarks caused by plate adsorption. At the same time, the surface of the diffuser 7 is scratch-resistant and not easy to absorb dust. The blue proportion of the blue sky atmosphere effect is higher, and the "sky" is bluer. At the same time, the number of plates is reduced, the module as a whole is lighter and thinner, and the ease of assembly is improved.

[0059] This embodiment offers a high degree of modularity, a thin profile, and easy installation and maintenance. This reduces the size of the skylight, making it easier to deploy in smaller buildings. This structure allows for the deliberate division of light into different groups, controlled by refraction and reflection. These light groups blend together to create a deep, blue sky effect. This realistic simulation allows users to experience the sky and sunlight indoors, enhancing their mood.

[0060] Preferably, the housing 1 includes a bottom plate 11 and side plates 12 that enclose the bottom and side surfaces of the diffuser plate 7 and Rayleigh scattering light guide plate 2. The top of the side plate 12 is horizontally bent inward to form a limiting pressure edge 13, which compresses the front edge of the diffuser plate 7. A light source accommodating cavity 14 is provided between the side plate 12 and the Rayleigh scattering light guide plate 2, and the light source 4 is disposed in the light source accommodating cavity 14. By adopting this structure, the various components can be enclosed in the square housing 1, achieving a strong sense of integrity. This module does not require any additional connection structures such as bolts, making it easy to assemble and reliable.

[0061] Example 4

[0062] like Figure 7 As shown, the fourth embodiment of the present utility model provides a blue sky simulation module, including a housing 1;

[0063] A diffuser plate 7, wherein the diffuser plate 7 may be a Rayleigh scattering diffuser plate;

[0064] A Rayleigh scattering light guide plate 2 is provided in the housing 1;

[0065] a reflective unit, provided on the back of the Rayleigh scattering light guide plate 2, capable of reflecting light emitted from the back of the Rayleigh scattering light guide plate 2 back into the Rayleigh scattering light guide plate 2 at surfaces at different distances from the back of the Rayleigh scattering light guide plate 2; the reflective unit is a second diffuser 9;

[0066] The light source 4 is disposed on one side of the Rayleigh scattering light guide plate 2 and can emit light into the Rayleigh scattering light guide plate 2 from the side of the Rayleigh scattering light guide plate 2 .

[0067] In this embodiment, the housing 1 can be aluminum; the Rayleigh scattering light guide plate 2 can be made of materials such as PC, acrylic, or glass. The Rayleigh scattering light guide plate 2 has a thickness of 4-6 mm, preferably 5 mm. The diffuser plate 7 has a thickness of 3 mm. The light source 4 is side-emitting and is located on one side of the Rayleigh scattering light guide plate 2. The light source 4 has a color temperature of 6880-8100 K, a dominant wavelength of 484 nm, a red ratio of 15.1%, a green ratio of 78.2%, and a blue ratio of 6.6%.

[0068] When the light source 4 is turned on, the light enters the Rayleigh scattering light guide plate 2 and is scattered on the surface of the micro-nanoparticles inside it, causing the light-emitting surface to present a blue sky effect. Part of the light is refracted downward onto the second diffuser plate 9 and scattered on the second diffuser plate 9. Part of the light re-enters the Rayleigh scattering light guide plate 2 after refraction or reflection. The light emitted directly from the Rayleigh scattering light guide plate 2 and the light refracted or reflected by the second diffuser plate 9 and then emitted from the Rayleigh scattering light guide plate 2 enter the diffuser plate 7, which produces a certain amount of scattering. When the human eye observes the lamp, a visual effect of a superimposed blue sky effect appears, which is more three-dimensional. This embodiment utilizes the second diffuser plate 9 to replace the reflective effect of the mirror layer 8, and is matched with the diffuser plate 7 located in front of the Rayleigh scattering light guide plate 2. This solution can also solve the problem of watermarks caused by plate adsorption. This solution will reduce the depth of the blue sky simulation module, but the lamp will appear light blue when observed without the main light.

[0069] This embodiment offers a high degree of modularity, a thin profile, and easy installation and maintenance. This reduces the size of the skylight, making it easier to deploy in smaller buildings. This structure allows for the deliberate division of light into different groups, controlled by refraction and reflection. These light groups blend together to create a deep, blue sky effect. This realistic simulation allows users to experience the sky and sunlight indoors, enhancing their mood.

[0070] Preferably, the housing 1 includes a bottom plate 11 and side plates 12 that enclose the bottom and side surfaces of the diffuser 7, Rayleigh scattering light guide plate 2, and second diffuser 9. The top of the side plate 12 is horizontally bent inward to form a limiting pressure edge 13, which presses the front edge of the diffuser 7. A light source accommodating cavity 14 is provided between the side plate 12 and the Rayleigh scattering light guide plate 2, and the light source 4 is disposed in the light source accommodating cavity 14. By adopting this structure, the various components can be enclosed in the square housing 1, achieving a strong sense of integrity. This module does not require any additional connection structures such as bolts, making it easy to assemble and reliable.

[0071] Preferably, in the above different embodiments, the side-emitting light source 4 can use lamp beads with adjustable color temperature. By adjusting the color temperature, the Rayleigh scattering light guide plate 2 can present various sky types such as clear sky after rain, noon, dusk, etc., to adapt to various different usage environments.

[0072] In addition, the fifth embodiment of the present invention further provides a lamp, which is provided with the blue sky simulation module as described above.

[0073] By adopting this embodiment, the degree of modularization is high, the thickness is thin, and the installation and maintenance are convenient. The volume of the sky light can be reduced, and it is convenient to promote the sky light in buildings with smaller areas.

[0074] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A blue sky simulation module, characterized in that: include case; A Rayleigh scattering light guide plate is provided in the housing; a reflecting unit, provided at the back of the Rayleigh scattering light guide plate, capable of reflecting light emitted from the back of the Rayleigh scattering light guide plate back into the Rayleigh scattering light guide plate; The light source is provided on one side of the Rayleigh scattering light guide plate and can emit light into the Rayleigh scattering light guide plate from the side surface of the Rayleigh scattering light guide plate.

2. The blue sky simulation module according to claim 1, wherein: The reflection unit is a semi-transparent and semi-reflective plate.

3. The blue sky simulation module according to claim 2, characterized in that: A black light-absorbing layer is also provided on the back of the semi-transparent and semi-reflective plate.

4. The blue sky simulation module according to claim 3, wherein: The Rayleigh scattering light guide plate, the semi-transparent and semi-reflective plate and the black light absorbing layer are arranged closely to each other.

5. The blue sky simulation module according to claim 2, characterized in that: A predetermined gap is provided between the Rayleigh scattering light guide plate and the semi-transmissive and semi-reflective plate.

6. The blue sky simulation module according to claim 1, wherein: The reflective unit is a mirror layer, and a diffusion plate is further provided on the front of the Rayleigh scattering light guide plate.

7. The blue sky simulation module according to claim 1, wherein: The reflecting unit is a second diffuser plate, and a diffuser plate is further provided on the front of the Rayleigh scattering light guide plate.

8. The blue sky simulation module according to claim 2, wherein: The thickness of the Rayleigh scattering light guide plate is 4-6 mm, and the thickness of the semi-transparent and semi-reflective plate is 1.5-3.5 mm.

9. The blue sky simulation module according to claim 2 or 3, characterized in that: The shell includes a bottom plate and side plates that wrap the bottom and side surfaces of the Rayleigh scattering light guide plate and the reflective unit. The top of the side plate is horizontally bent inward to form a limiting pressure edge, and the limiting pressure edge presses the front edge of the Rayleigh scattering light guide plate; a light source accommodating cavity is provided between the side plate and the Rayleigh scattering light guide plate, and the light source is provided in the light source accommodating cavity.

10. A lamp, characterized in that: A blue sky simulation module as described in any one of claims 1 to 9 is provided.

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