CN223782721U - A type of skylight - Google Patents
A type of skylightInfo
- Publication number
- CN223782721U CN223782721U CN202520291275.9U CN202520291275U CN223782721U CN 223782721 U CN223782721 U CN 223782721U CN 202520291275 U CN202520291275 U CN 202520291275U CN 223782721 U CN223782721 U CN 223782721U
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- light
- projection
- module
- collimating lens
- light source
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Abstract
The utility model relates to the technical field of lighting lamps, in particular to a clear sky lamp. The clear sky lamp comprises a shell, a blue sky module and a projection module. The blue sky module is installed in the inside of casing, and the inside wall of casing encloses to close and forms the luminous chamber, and the luminous surface of blue sky module is towards the luminous chamber. An installation cavity is formed between the inner wall surface and the outer wall surface of the shell, and the projection module is arranged in the installation cavity. The projection module is provided with a projection part, the projection part is provided with at least one projection hole, the outer wall surface of the shell is provided with a light outlet notch, and the light path of the projection module passes through the projection hole and irradiates from the light outlet notch. By adopting the utility model, the illumination effect which can be realized when the clear sky lamp is used can be effectively increased, and the use requirement of a user is met.
Description
Technical Field
The utility model relates to the technical field of lighting lamps, in particular to a clear sky lamp.
Background
In the existing lighting device, a clear sky lamp is lighting equipment for simulating sky visual effect, which can provide sky-like visual effect for a space which cannot be illuminated by sunlight indoors and provides comfortable visual experience for users. The clear sky lamp mainly comprises a light source, a lens and a refractive plate lamp capable of presenting a blue sky effect, and the blue sky effect required to be presented by the clear sky lamp is correspondingly realized.
Most of the existing clear sky lamps are emergent in the form of inclined Rayleigh plates so as to form a certain lighting effect. But the clear sky lamp has fewer illumination effects in the use process, and the application scene restored by the clear sky lamp is single, so that the use experience of a user is influenced.
Disclosure of utility model
The utility model provides a clear sky lamp, which can effectively increase the illumination effect realized by the clear sky lamp when in use and meet the use requirement of a user.
In order to solve the technical problems, the utility model provides a clear sky lamp, comprising:
A housing;
the blue sky module is arranged in the shell, a luminous cavity is formed by surrounding the inner side wall of the shell, and the luminous surface of the blue sky module faces to the luminous cavity;
The projection module is arranged in the installation cavity, a projection piece is arranged in the projection module, at least one projection hole is formed in the projection piece, a light outlet notch is formed in the outer wall surface of the shell, and a light path of the projection module passes through the projection hole and irradiates the outside of the shell from the light outlet notch.
As an improvement of the scheme, the projection module comprises a light source assembly, a collimating lens group, a magnifying lens group and the projection piece, wherein the collimating lens group is positioned between the light source assembly and the projection piece, and the magnifying lens group is positioned on one side, away from the collimating lens group, of the projection piece.
As the improvement of above-mentioned scheme, the light source subassembly includes projection light source and condenser lens, projection light source slope set up in the installation cavity, condenser lens enclose in projection light source, condenser lens's play plain noodles is towards the collimating lens group.
As an improvement of the scheme, the collimating lens group comprises a first collimating lens and a second collimating lens, the first collimating lens is positioned on the luminous surface of the light source assembly, the second collimating lens is positioned between the first collimating lens and the projection piece, the side surface of the second collimating lens, facing the first collimating lens, is a convex surface, and the side surface of the second collimating lens, facing the projection piece, is a concave surface.
As an improvement of the above scheme, the magnifying lens group includes a first imaging lens and a second imaging lens, the first imaging lens is located at a side of the projection member facing away from the collimating lens group, the second imaging lens is located at a side of the first imaging lens facing away from the projection member, and both sides of the second imaging lens are concave surfaces.
As the improvement of above-mentioned scheme, projection module still includes inside hollow projection barrel, projection barrel downward sloping set up in the installation cavity, projection barrel's inside is formed with a plurality of interval distribution's mounting groove, the light source subassembly collimation lens group projection piece with the magnifying glass group installs in corresponding in the mounting groove.
As the improvement of above-mentioned scheme, the installation cavity is provided with the support frame, the support frame orientation the one end of projection barrel is provided with the clamping piece, the clamping piece is used for pressing from both sides tightly the outer wall surface of projection barrel, just the top of clamping piece is provided with locking adjusting piece.
As an improvement of the scheme, the light-emitting notch is detachably connected with a light-transmitting cover, the light-transmitting cover covers the mounting cavity, and a projection light path of the projection module is irradiated through the light-transmitting cover.
The blue sky light source is arranged on the side of the scattering light guide plate, the blue sky light source faces the light inlet surface of the scattering light guide plate, the reflecting surface of the scattering light guide plate is arranged opposite to the light outlet surface, the reflecting plate is arranged on the reflecting surface of the scattering light guide plate, and the light outlet surface of the scattering light guide plate faces the light emitting cavity.
As an improvement of the above scheme, the method further comprises:
The side atmosphere module, the casing is formed with staggered first inside wall and second inside wall, first inside wall is formed with the mounting hole, side atmosphere module set up in the mounting hole, the mounting hole is connected with the light interception board, the light interception board is formed with the light interception hole, the atmosphere light path of side atmosphere module passes through the light interception hole, and shines to the second inside wall.
The implementation of the utility model has the following beneficial effects:
According to the clear sky lamp provided by the embodiment, the blue sky module can irradiate stereoscopic blue sky atmosphere light to the light emitting cavity of the shell so as to correspondingly realize the sky light shadow simulation effect of the clear sky lamp. Meanwhile, the projection module arranged between the inner side wall and the outer side wall of the shell is used for irradiating projection illumination light rays to the outside of the shell, so that the illumination effect of the clear sky lamp for simulating sunlight irradiation in a room is achieved.
And because the light path of projection module is through forming the projection hole of preset shape, projection module can be with the projection hole when the projection the preset shape projection to wall or other target plane on for projection module's facula can form the boundary of preset shape, thereby make clear sky lamp can form the illumination facula of multiple different shapes, effectively increase clear sky lamp can realize when using the illuminating effect, and multiple illumination application scene is reduced, effectively satisfy user's user demand.
Drawings
Fig. 1 is a schematic perspective view of a clear sky light according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of an installation position of a side atmosphere module in a clear sky light according to an embodiment of the present utility model;
FIG. 3 is a schematic view showing a mounting position of a projection module in an illumination cavity according to an embodiment of the present utility model;
FIG. 4 is a schematic cross-sectional view of a projection module according to an embodiment of the utility model;
FIG. 5 is a schematic diagram showing the positions of the lenses of the projection module according to an embodiment of the utility model;
FIG. 6 is a schematic cross-sectional view of a clear sky light in another embodiment of the utility model;
FIG. 7 is a schematic diagram of a side atmosphere module according to an embodiment of the utility model;
Fig. 8 is a schematic structural diagram of a blue sky module according to an embodiment of the utility model.
Detailed Description
The present utility model will be described in further detail with reference to the accompanying drawings, for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent. It is only stated that the terms of orientation such as up, down, left, right, front, back, inner, outer, etc. used in this document or the imminent present utility model, are used only with reference to the drawings of the present utility model, and are not meant to be limiting in any way.
The clear sky lamp provided by the utility model can effectively increase the illumination effect which can be realized when the clear sky lamp is used, and meets the use requirements of users.
In one embodiment of the present utility model, as shown in fig. 1 to 8, a clear sky light includes a housing 1, a blue sky module 2, and a projection module 3. The blue sky module 2 is installed in the inside of casing 1, and the inside wall of casing 1 encloses and closes and form luminous chamber 101, and the luminous surface of blue sky module 2 is towards luminous chamber 101. An installation cavity 301 is formed between the inner wall surface and the outer wall surface of the housing 1, the projection module 3 is arranged in the installation cavity 301, and the outer wall surface of the housing is formed with a light outlet notch 104. The projection module 3 is provided with a projection member 31, the projection member 31 is formed with at least one projection hole 311, and the light path of the projection module 3 passes through the projection hole 311 and irradiates the outside of the housing 1 from the light outlet slot 104.
According to the clear sky lamp provided by the embodiment, the blue sky module 2 can irradiate the light emitting cavity 101 of the shell 1 with stereoscopic blue sky atmosphere light so as to correspondingly achieve the sky-simulating light and shadow effect of the clear sky lamp. Meanwhile, the projection module 3 arranged between the inner side wall and the outer side wall of the shell 1 is used for radiating projection illumination light to the outside of the shell 1, so that the illumination effect of the clear sky lamp for simulating sunlight irradiation in a house is achieved.
And because the light path of projection module 3 is through forming the projection hole 311 of preset shape, projection module 3 can be with projection hole 311's preset shape projection to wall or other target plane when the projection for the facula of projection module 3 can form the boundary of preset shape, thereby makes clear sky lamp can form the illumination facula of multiple different shapes, effectively increases the illumination effect that clear sky lamp can realize when using, and resumes multiple illumination application scene, effectively satisfies user's user demand.
Specifically, the light outlet slot 104 may be disposed on an outer side wall of the casing, and the light path of the projection module irradiates the outer space of the clear sky lamp through the outer side wall of the casing, and the light outlet slot 104 may also be disposed on an outer bottom wall of the casing, and the light path of the projection module irradiates the outer space of the clear sky lamp obliquely through the outer bottom wall of the casing.
The preset shape of the projection hole 311 in the projection member 31 may be selected correspondingly according to actual requirements, and the projection hole 311 may be a polygonal hole or an irregularly shaped hole, for example, the projection hole 311 is a square hole or a rectangular hole, so that the projection module 3 may form a square light spot or a rectangular light spot, thereby further improving the authenticity of the illumination effect of the clear sky lamp in simulating sunlight irradiation. The projection hole 311 may be a circular hole, so as to increase the softness of the flare in the vision and reduce the glare on the flare boundary. In other aspects, the projection hole 311 may be a specific irregularly shaped hole such as a star shape, so as to meet the practical use requirement of the user. In this embodiment, the projection hole 311 is preferably a rectangular hole.
It should be noted that, a plurality of projection holes 311 with different preset shapes may be formed in the projection member 31, so as to irradiate the shapes of the plurality of projection holes 311 to different areas of the target plane at the same time, thereby increasing the visual effect of the projection light spot.
It should be further noted that, the projection member 31 is preferably a film, so as to ensure that the projection light spot boundary of the projection module 3 is clear, and facilitate the user to customize the specific shape of the projection hole 311 according to the actual requirement, thereby meeting the actual requirement.
In this embodiment, as shown in fig. 4 and 5, the projection module 3 includes a light source assembly 32, a collimating lens group 33, a projection member 31 and a magnifying lens group 34, the collimating lens group 33 is located between the light source assembly 32 and the projection member 31, and the magnifying lens group 34 is located on a side of the projection member 31 facing away from the collimating lens group 33. When the projection module 3 is powered on, the light source assembly 32 can emit illumination light to one side of the collimating lens group 33, the collimating lens group 33 is utilized to polymerize the diffused illumination light, and then the collimating lens group 33 irradiates the polymerized illumination light to the projection piece 31 so as to intercept light passing through the projection hole 311 in the projection piece 31, so that the light passing through the light hole irradiates to the magnifying lens group 34 to form a projection light spot with a preset shape, thereby ensuring the illumination effect formed by the projection module 3, ensuring the simulation effect of the projection module 3 on sunlight incidence, and ensuring the uniformity of the whole effect of the light.
The light source assembly 32 includes a projection light source 321 and a condensing lens 322, the projection light source 321 is obliquely disposed in the mounting cavity 301, the condensing lens 322 encloses the projection light source 321, and a light emitting surface of the condensing lens 322 faces the collimating lens group 33, so that a certain converging effect is provided for the irradiation light of the projection light source 321 by using the condensing lens 322, and the light energy utilization rate of the projection light source 321 is improved. The inclination angle of the projection light source 321 may be set correspondingly according to actual requirements, so as to ensure that the light of the projection light source 321 can be irradiated from the outer side wall of the housing 1 away from the light emitting cavity 101 to the outside of the housing 1.
The collimating lens group 33 includes a first collimating lens 331 and a second collimating lens 332, the first collimating lens 331 is located on the light emitting surface of the light source assembly 32, the second collimating lens 332 is located between the first collimating lens 331 and the projection member 31, a side surface of the second collimating lens 332 facing the first collimating lens 331 is a convex surface, and a side surface of the second collimating lens 332 facing the projection member 31 is a concave surface.
Specifically, when the light of the light source assembly 32 irradiates the first collimating mirror 331, the first collimating mirror 331 can reduce the irradiation angle of the light source assembly 32 and irradiates the light to the second collimating mirror 332, and then the second collimating mirror 332 is subjected to the refraction effect of the convex surface and the concave surface, so that the light of the light source assembly 32 is close to a parallel state, thereby performing a certain collimating operation on the light of the light source assembly 32, ensuring that the light of the light source assembly 32 can irradiate the light hole of the light transmitting member as much as possible, and enhancing the light energy utilization rate of the projection module 3 to the projection light source 321.
The magnifying lens assembly 34 includes a first imaging lens 341 and a second imaging lens 342, the first imaging lens 341 is located on a side of the projection member 31 facing away from the collimating lens assembly 33, the second imaging lens 342 is located on a side of the first imaging lens 341 facing away from the projection member 31, and both sides of the second imaging lens 342 are concave. Further, by using the first imaging lens 341 and the second imaging lens 342 in combination, the light rays cut off by the projection hole 311 of the projection member 31 are diffused outwards to form relatively uniform illumination spots with a certain brightness, so that the illumination area of the projection module 3 is enlarged, and the visual comfort is improved.
Further, as shown in fig. 3 and 4, the projection module 3 further includes a projection cylinder 35 with a hollow interior, the projection cylinder 35 is disposed in the mounting cavity 301 in a downward inclined manner, a plurality of mounting grooves 351 are formed in the projection cylinder 35 and are distributed at intervals, and the light source assembly 32, the collimating lens group 33, the projection member 31 and the magnifying lens group 34 are mounted in the corresponding mounting grooves 351, so that the light source assembly 32, the collimating lens group 33, the projection member 31 and the magnifying lens group 34 are integrated into the projection cylinder 35 through the plurality of mounting grooves 351 in the projection cylinder 35, the mounting stability of each component in the projection cylinder 35 is ensured, and the projection light spot effect is prevented from being affected due to shaking of the projection member 31 and other components when the projection cylinder 35 moves along with the housing 1.
Specifically, as shown in fig. 4, 6 mounting grooves 351 may be formed, and the 6 mounting grooves 351 are arranged at a certain distance from inside to outside, the projection light source 321 is disposed at the bottom of the projection cylinder 35 through a light source fixing plate, and the condensing lens 322, the first collimating lens 331, the second collimating lens 332, the film, the first imaging lens 341 and the second imaging lens 342 are sequentially disposed in the corresponding mounting grooves 351, so as to complete the configuration fixing of the projection module 3.
Still further, in another embodiment, to ensure the mounting stability of the projection cylinder 35 in the mounting cavity 301, as shown in fig. 6, the mounting cavity 301 is provided with a supporting frame 36, one end of the supporting frame 36 facing the projection cylinder 35 is provided with a clamping member 361, the clamping member 361 is used for clamping the outer wall surface of the projection cylinder 35, and the top of the clamping member 361 is provided with a locking adjusting member 362. Further, when the projection cylinder 35 is mounted in the mounting cavity 301, the locking adjusting member 362 can be released, so that the clamping member 361 can clamp the outer wall surface of the projection cylinder 35, and then the locking adjusting member 362 is adjusted to lock the clamping member 361, so that the projection cylinder 35 is locked and fixed in the mounting cavity 301 through the support 36 and the clamping member 361 on the support 36, and the mounting stability of the projection cylinder 35 is ensured.
Wherein optionally, locking adjustment piece 362 can be adjusting bolt, and clamping piece 361 can be two arc splint, and the top of two arc splint all is formed with the outer boss, and two outer bosses all are formed with the through-hole, and adjusting bolt passes two through-holes after, realizes locking two arc splint through the nut.
In this embodiment, as shown in fig. 1 to 3, the light outlet slot 104 is detachably connected with the light-transmitting cover 11, the light-transmitting cover 11 covers the installation cavity 301, and the projection light path of the projection module 3 is irradiated through the light-transmitting cover 11, so that the projection module 3 in the installation cavity 301 is covered and shielded by the light-transmitting cover 11, and thus, environmental factors such as dust or mosquitoes in the external environment are prevented from entering the installation cavity 301 to shield the light-emitting lens of the projection module 3, and the light-emitting effect of the projection module 3 is ensured not to be affected.
Preferably, the transparent cover 11 is a transparent cover plate, and the transparent cover plate can be mounted on the outer side wall of the shell 1 in a detachable connection manner such as bolting or buckling connection, so as to further ensure that the transparent cover plate cannot influence the light emitting effect of the projection module 3 and ensure that the illumination light spot of the clear sky lamp is not influenced.
In the embodiment of the present utility model, as shown in fig. 6 and 8, the blue sky light module 2 includes a blue sky light source 21, a scattering light guide plate 22 and a reflective plate 23, wherein the light incident surface of the scattering light guide plate 22 is disposed at the side of the scattering light guide plate 22, and the blue sky light source 21 faces the light incident surface of the scattering light guide plate 22. The reflecting surface of the scattering light guide plate 22 is disposed opposite to the light emitting surface, and the reflecting plate 23 is located on the reflecting surface of the scattering light guide plate 22, and the light emitting surface of the scattering light guide plate 22 faces the light emitting cavity 101. Wherein the scattering light guide plate 22 is a rayleigh scattering light guide plate 22.
It can be understood that, when the light of the blue sky light source 21 irradiates the scattering light guide plate 22 from the side, part of the light is scattered by the micro-nano particles in the scattering light guide plate 22 and irradiates the light to the light emitting cavity 101 directly from the light emitting surface of the scattering light guide plate 22, and the other part of the light is refracted by the scattering light guide plate 22, enters the reflecting plate 23, is reflected by the reflecting plate 23, then irradiates the scattering light guide plate 22 again, is scattered or reflected by the micro-nano particles in the scattering light guide plate 22 again, and then is correspondingly emitted from the light emitting surface of the scattering light guide plate 22, or is reflected back to the reflecting plate 23 for secondary or multiple reflection.
And then utilize scattering light guide plate 22 and reflecting plate 23 can make the light of blue sky light source 21 divide into the light that the multipart interval was penetrated, utilize multipart light stack, the light-emitting surface of scattering light guide plate 22 can present the superimposed visual experience of blue sky effect to make the blue sky atmosphere scattered light that blue sky module 2 shined possess certain third dimension, guarantee that the blue sky effect of blue sky module 2 is profound three-dimensional more.
In addition, the blue sky light source 21 is arranged on the side face of the scattering light guide plate 22, so that a containing space of the blue sky light source 21 is not required to be reserved on the back of the scattering light guide plate 22, the overall thickness of the clear sky light is remarkably reduced, the clear sky light is convenient to install, and the die cost of the clear sky light is reduced.
Among them, the blue sky light source 21 preferably has a color temperature of 6880-8100K, a dominant wavelength of 484nm, and a red-green-blue ratio of 15.1%,78.2%,6.6%.
It should be noted that, as shown in fig. 8, the blue sky module 2 further includes a light-transmitting plate 24, the light-transmitting plate 24 is located on the light-emitting surface of the scattering light-guiding plate 22, the size of the light-transmitting plate 24 is larger than that of the scattering light-guiding plate 22, so that the scattering light-guiding plate 22 is covered by the light-transmitting plate 24, the scattering light-guiding plate 22 is protected, scratches on the light-emitting surface of the scattering light-guiding plate 22 are prevented, and dust is prevented from adhering to the light-emitting surface of the scattering light-guiding plate 22, so as to ensure the light-emitting effect of the scattering light-guiding plate 22. In the present embodiment, the light-transmitting plate 24 is preferably a transparent plate with high light transmittance, so that the light-transmitting plate 24 is used to protect the scattering light-guiding plate 22 and prevent the light-transmitting plate 24 from affecting the light-emitting effect of the scattering light-guiding plate 22.
In the embodiment of the utility model, in order to further improve the reality of the blue sky simulation effect of the clear sky lamp, as shown in fig. 2, 6 and 7, the clear sky lamp further includes a side atmosphere module 4, the housing 1 is formed with a first inner sidewall 102 and a second inner sidewall 103 that are staggered, wherein the first inner sidewall 102 is formed with a mounting hole 12, the side atmosphere module 4 is disposed in the mounting hole 12, the mounting hole 12 is connected with a light interception plate 41, the light interception plate 41 is formed with a light interception hole 411, an atmosphere light path of the side atmosphere module 4 passes through the light interception hole 411 and irradiates to the second inner sidewall 103, and the light shadow effect of the side wall surface of the solar irradiation window can be simulated on the second inner sidewall 103 by using the side atmosphere module 4.
It can be understood that when the atmosphere light path of the side atmosphere module 4 irradiates the inner side walls on two sides of the housing 1, the side atmosphere module 4 can amplify the side wall shape of the light interception hole 411 to irradiate the second inner side wall 103, and the atmosphere light spots formed by the side atmosphere module 4 form obvious cut-off lines, so that soft transition areas are formed on the inner side walls on two sides, and the whole transition of light is more natural and uniform. And when the sky light utilizes the sky light module 2 and the side atmosphere module 4 to reflect the sky light simulation effect, the sky light simulation effect can be more similar to the real sky effect, and the reality of the sky light simulation effect is effectively ensured.
It should be noted that, the first inner side wall 102 of the housing 1 is formed with two symmetrically arranged mounting holes 12, and the light interception holes 411 of the light interception plate 41 in the two mounting holes 12 are also kept relatively symmetrical, so as to ensure that the two inner side walls of the housing 1 can form a consistent side light atmosphere effect.
Specifically, as shown in fig. 6 and 7, the side atmosphere module 4 includes an atmosphere light source 42, a convex lens 43 and a mounting box 44, the mounting box 44 is mounted in the mounting cavity 301, the light-blocking plate 41 is disposed at an opening of the mounting box 44 toward the light-emitting cavity 101, the atmosphere light source 42 is mounted on a bottom wall of the mounting box 44, and the convex lens 43 is covered on the atmosphere light source 42. The convex lens 43 can collect light of the ambient light source 42 to reduce light loss of the ambient light source 42, and the ambient light source 42, the convex lens 43 and the light-blocking plate 41 form an integral ambient module through the mounting box 44, and the mounting position of the mounting box 44 in the mounting cavity 301 can be adjusted by adjusting the mounting position of the ambient light source 42 according to actual lighting conditions, so as to ensure lighting effect of the ambient light source 42 on inner side walls of two sides.
And when the mounting box 44 is fixed in the mounting cavity 301, the ambient light source 42 and the light interception holes 411 are arranged in a staggered manner, so that the light of the ambient light source 42 can be ensured to be obliquely irradiated to the inner side walls on two sides from the light interception holes 411, and the simulated incidence effect of the ambient light source 42 is further ensured.
In summary, according to the embodiments of the present utility model, the sunny lamp provided by the present utility model can provide a more profound and stereoscopic blue sky effect by using the blue sky module 2, and meanwhile, the side light atmosphere effect provided by the side atmosphere module 4 is matched with the blue sky effect, so that the sunny lamp can provide a blue sky simulation effect closer to the real sky, and the edge shape of the projection hole 311 is projected to the target plane by using the projection module 3, so that the sunny lamp can form illumination light spots with various shapes, and the boundaries of the illumination light spots are regular, thereby effectively improving the illumination effect of the sunny lamp. The blue sky module 2, the side atmosphere module 4 and the projection module 3 are matched, so that the clear sky light can simulate the light and shadow effect of a clear sky skylight.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520291275.9U CN223782721U (en) | 2025-02-21 | 2025-02-21 | A type of skylight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520291275.9U CN223782721U (en) | 2025-02-21 | 2025-02-21 | A type of skylight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223782721U true CN223782721U (en) | 2026-01-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520291275.9U Active CN223782721U (en) | 2025-02-21 | 2025-02-21 | A type of skylight |
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| Country | Link |
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| CN (1) | CN223782721U (en) |
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2025
- 2025-02-21 CN CN202520291275.9U patent/CN223782721U/en active Active
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