An adaptive brightness-regulated architectural light-guiding illumination system

Abstract

The application relates to the technical field of lighting devices, and discloses a building light guide lighting system capable of self-adapting to luminance, which comprises a mounting base, an illumination intensity sensor, a light guide optical fiber, a diffusion cover, a light collecting cover fixedly arranged at the bottom end of the mounting base, a supporting cylinder arranged at the top end of the mounting base, and a light guide cylinder one slidingly arranged in the supporting cylinder; when the illumination intensity sensor detects that the light intensity at the diffusion cover is lower than a preset threshold value, a control module adjusts the working current of LED lamp beads in a light supplementing assembly, luminance is stepwise improved, and indoor light intensity is ensured to be stably within a required range; when it is detected that the light intensity is higher than an upper limit of the threshold value, a motor-driven push rod drives a light guide cylinder two to move downwards, photovoltaic panels in the supporting cylinder are gradually exposed to absorb part of light, and the amount of light entering the diffusion cover is reduced, so that the technical problems that the illumination intensity of a traditional light guide system cannot be automatically adapted to changes in external light and over-brightness or over-darkness is prone to occurring are effectively solved, and the stability and comfort of indoor lighting are ensured.

Description

Technical Field

[0001] This invention relates to the field of lighting equipment technology, specifically to an adaptive brightness-adjustable architectural light guide lighting system. Background Technology

[0002] A building light guide system is a lighting system that collects outdoor natural light through specific optical devices (such as light domes, light guides, reflectors, etc.), and then transmits and distributes the light to the interior of a building (especially windowless areas or spaces with insufficient natural light). It can reduce the building's dependence on artificial lighting, reduce energy consumption, and at the same time provide a more natural lighting environment for the interior, improving spatial comfort and visual experience. It is commonly found in underground parking garages, shopping mall atriums, and core areas of office buildings.

[0003] Chinese patent CN106195910A discloses a basement light guide lighting system, including a light-collecting plate, a primary light-collecting tube, a secondary light-collecting tube, and a diffuser. The light-collecting plate is installed on the exterior wall of the building and has multiple light-collecting heads. One end of the primary light-collecting tube is connected to a light-collecting head, and the other end is connected to the secondary light-collecting tube. One end of the secondary light-collecting tube is connected to the primary light-collecting tube, and the other end is connected to the diffuser. This invention collects light through the light-collecting plate, and the number and size of the light-collecting plates can be set arbitrarily, without being limited by the size of the pre-reserved openings in the building. The light is transmitted to the interior through the secondary light-collecting tube or the light guide tube passing through the pre-reserved openings in the building. Since the light-collecting plate is installed on the exterior wall of the building, it can cover the entire building. Even under weak outdoor light conditions, it can collect enough light source to fully meet the needs of indoor lighting and effectively promote the application of light guide lighting technology.

[0004] As shown in the aforementioned patent, existing building light guide systems based on sunlight suffer from insufficient adaptive control of light intensity in practical applications. Because the irradiance of sunlight fluctuates significantly with weather conditions, time of day, and atmospheric environment, the light intensity introduced into the room changes drastically and is difficult to stabilize within the preset comfortable lighting range. This unsteady light output not only affects the uniformity of indoor lighting and visual comfort, but may also cause glare interference due to excessive light or fail to meet basic lighting needs due to insufficient light, severely restricting the actual application effect and user experience of the light guide system.

[0005] Therefore, it is necessary to provide an adaptive brightness-adjustable building light guide system to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide an adaptive brightness adjustment building light guide lighting system, which achieves adaptive adjustment of light intensity through the setting of light intensity sensor, supplementary lighting component and driving component.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: an adaptive brightness-adjustable building light guide lighting system, comprising a mounting base, a light intensity sensor, a light guide fiber, a diffuser, a light-collecting cover fixedly installed at the bottom of the mounting base, a support cylinder installed at the top of the mounting base, and a light guide cylinder slidably installed inside the support cylinder. The light intensity sensor is installed indoors to monitor the light intensity of the diffuser. A supplementary lighting component is installed inside the diffuser. Multiple light guide fibers are provided, with one end of the light guide fiber extending into the light-collecting cover and the other end extending into the light guide cylinder 1. The light guide cylinder 1 is connected to the diffuser. Multiple photovoltaic panels are embedded inside the support cylinder. A drive component is provided on the support cylinder for driving the light guide cylinder 1 to rise and fall. When the light guide cylinder 1 descends, part of the light emitted from the end of the light guide fiber away from the light-collecting cover illuminates the photovoltaic panel.

[0008] A further provision of the present invention is that: a first mounting box and a second mounting box are fixedly mounted on the mounting base; a battery pack is disposed inside the first mounting box; a photovoltaic inverter and a control module are disposed inside the second mounting box; the photovoltaic panel is electrically connected to the battery pack through the photovoltaic inverter; and the supplementary lighting component is electrically connected to the battery pack.

[0009] A further configuration of the present invention is as follows: the supplementary lighting component includes an annular mounting plate and a plurality of LED beads, both the annular mounting plate and the LED beads are disposed on a diffuser cover, the annular mounting plate is fixedly mounted on the bottom wall of the mounting base, the plurality of LED beads are fixedly mounted on the bottom wall of the annular mounting plate, and the battery pack is electrically connected to the LED beads.

[0010] A further configuration of the present invention is as follows: a second light guide tube is fixedly installed at the top of the mounting base, the support tube is fixedly installed at the top of the second light guide tube, and the second light guide tube is connected to the inner cavity of the diffuser.

[0011] A further configuration of the present invention is as follows: the driving assembly includes an electric push rod and a driving plate, the driving plate is fixedly connected to the top of the outer peripheral wall of the first light guide tube, the electric push rod is fixedly installed on the outer wall of the support tube, the output end of the electric push rod penetrates the top wall of the second light guide tube, and the output end of the electric push rod is fixedly connected to the driving plate.

[0012] A further feature of the present invention is that: a reflective optical disc is disposed inside the diffuser, a vertical rod is fixedly installed on the inner wall of the top wall of the second light guide tube, the reflective optical disc is rotatably connected to the vertical rod, and a transmission component for driving the reflective optical disc to rotate is disposed at the bottom end of the drive plate.

[0013] A further feature of the present invention is that a connecting shaft is fixedly installed on the reflective disc, the connecting shaft passes through the reflective disc, one end of the connecting shaft is rotatably connected to the upright, and the other end of the connecting shaft is fixedly fitted with a gear. A stop block for limiting the rotation angle of the reflective disc is fixedly installed on the bottom of the upright near the side wall of the reflective disc. When the reflective disc is in a vertical state, the reflective disc contacts the side wall of the stop block, and when the reflective disc is in a horizontal state, the reflective disc contacts the top wall of the stop block.

[0014] A further provision of the present invention is that: an installation cylinder is fixedly installed at the bottom of the side wall away from the reflector plate of the upright pole; one end of the connecting shaft away from the gear extends into the installation cylinder, and the connecting shaft and the installation cylinder are rotatably engaged; a torsion spring is provided inside the installation cylinder; one end of the torsion spring is fixedly connected to the inner wall of the installation cylinder, and the other end of the torsion spring is fixedly connected to the connecting shaft.

[0015] A further configuration of the present invention is as follows: the transmission assembly includes a guide rail, a rack, and a spring. The guide rail is fixedly installed at the bottom end of the drive plate. The rack is slidably connected to the guide rail and is adapted to a gear. The top end of the rack is elastically connected to the top inner wall of the guide rail through a spring. When the rack and gear are not in contact, the upright plate is in a vertical state under the action of the torsion spring.

[0016] A further feature of the present invention is that the adaptive brightness-adjusting building light guide system also includes multiple millimeter-wave radars, which are installed indoors to monitor whether there are people inside.

[0017] In summary, the present invention has the following beneficial effects: By configuring a light intensity sensor, a supplementary lighting component, and a driving component, the present invention achieves adaptive adjustment of the light intensity of the building light guide lighting system. When the light intensity sensor detects that the light intensity at the diffuser is lower than a preset threshold, the control module adjusts the LEDs in the supplementary lighting component. The operating current of the LED beads enables a step-by-step increase in brightness, ensuring that the indoor light intensity remains stable within the required range. When the light intensity is detected to be higher than the upper limit of the threshold, the electric push rod is driven to move the light guide tube downward, so that the photovoltaic panel inside the support tube is gradually exposed to absorb some light, reducing the amount of light entering the diffuser. This effectively solves the technical problem that the light intensity of traditional light guide systems cannot automatically adapt to changes in external light, and is prone to being too bright or too dark. This ensures the stability and comfort of indoor lighting. Furthermore, the photovoltaic panel of this invention is embedded inside the support tube and located on the outside of the light guide tube, far away from the diffuser. This avoids the formation of a dark projection area on the surface of the diffuser, ensuring the uniformity of lighting. By adjusting the exposed area of ​​the photovoltaic panel by raising and lowering the light guide tube, some of the light is absorbed by the outer photovoltaic panel when the light is transmitted through the inside of the light guide tube, and does not directly act on the diffuser. There is no need to set up a shielding structure near the diffuser, eliminating the physical basis for the formation of dark areas.

[0018] By coordinating millimeter-wave radar, reflector discs, and transmission components, the system's energy efficiency and functional adaptability are further optimized. When the millimeter-wave radar detects no one in the room, the control module drives the light guide tube to move down, which in turn drives the reflector disc to rotate to a horizontal position via the transmission components. Its convex mirror structure diffuses and reflects light onto the photovoltaic panel. At the same time, the light guide tube works in conjunction with the reflector disc to reduce light diffusion from the diffuser. This prevents prolonged exposure to sunlight from accelerating the aging of indoor items and maximizes the absorption of light by the photovoltaic panel, thereby increasing power generation. When someone is detected in the room, the reflector disc returns to a vertical position to reduce light reflection and ensures that most of the light enters the diffuser to meet the lighting requirements. This effectively solves the technical problems of traditional systems maintaining high illumination when no one is in the room, low energy efficiency, and susceptibility of photovoltaic panels to external environmental influences, achieving efficient synergy between lighting function and energy recovery. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention after the light-collecting cover is removed;

[0021] Figure 3 This is a schematic cross-sectional view of the present invention after the light-collecting cover has been removed;

[0022] Figure 4 This is a three-dimensional structural diagram of the support cylinder and light guide cylinder of the present invention;

[0023] Figure 5 This is a cross-sectional structural schematic diagram of the support cylinder and light guide cylinder of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of the support cylinder and photovoltaic panel of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the anti-reverse optical disc and the transmission assembly of the present invention;

[0026] Figure 8 This is a cross-sectional view of the mounting cylinder of the present invention;

[0027] Figure 9 This is a schematic diagram of the transmission component of the present invention.

[0028] In the diagram: 1. Light-collecting cover; 2. Optical fiber; 3. Mounting base; 4. Diffuser cover; 5. Light guide tube II; 6. Support tube; 7. Light guide tube I; 8. Photovoltaic panel; 9. Light guide base; 10. Electric push rod; 11. Drive board; 12. Annular mounting plate; 13. LED beads; 14. Reflecting disc; 1401. Convex mirror structure; 15. Upright pole; 16. Connecting shaft; 17. Mounting tube; 18. Torsion spring; 19. Gear; 20. Stop; 21. Guide rail; 22. Rack; 23. Spring; 24. Mounting box I; 25. Mounting box II. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] Please see Figures 1-6In this embodiment of the invention, an adaptive brightness-adjustable building light guide lighting system includes a mounting base 3, a light intensity sensor (not shown in the figure), a light guide fiber 2, a diffuser 4, a light-collecting cover 1 fixedly installed at the bottom of the mounting base 3, a support cylinder 6 installed at the top of the mounting base 3, and a light guide cylinder 7 slidably installed inside the support cylinder 6. The light intensity sensor is installed indoors to monitor the light intensity of the diffuser 4. A supplementary lighting component is installed inside the diffuser 4. Multiple light guide fibers 2 are provided, with one end of the light guide fiber 2 extending into the light-collecting cover 1 and the other end extending into the light-collecting cover 1. Inside the light guide tube 7, a light guide seat 9 is fixedly installed at the top of the support tube 6. The light guide seat 9 is used to seal the top opening of the support tube 6. The end of the optical fiber 2 away from the light-collecting cover 1 passes through the light guide seat 9 and extends into the top of the inner cavity of the light guide tube 7. The light guide seat 9 is made of opaque material. The function of the light guide seat 9 is to fix the end of the optical fiber 2 away from the light-collecting cover 1. The inner wall of the light-collecting cover 1 has a pre-set optical fiber fixing seat. The ends of multiple optical fibers 2 away from the light guide tube 7 are fixed and embedded in the optical fiber fixing seat with high-temperature resistant sealant. The end face of the optical fiber is flush with the inner wall of the light-collecting cover 1 to avoid refraction loss of light at the incident end. The outer wall of the optical fiber 2 furthest from the light-collecting cover 1 is wrapped with an elastic sealing sleeve. It passes through the pre-set fiber hole in the light guide base 9 and extends into the top of the inner cavity of the light guide tube 7. The sealing sleeve and the fiber hole are interference-fitted, achieving both axial fixation of the optical fiber 2 and preventing dust from entering the support tube 6 and affecting the light efficiency. After receiving sunlight, the light-collecting cover 1 uses its arc-shaped focusing structure to converge the scattered light to the incident end face of the optical fiber 2. The optical fiber 2 is made of high-transmittance quartz material, and its inner wall is vacuum-coated to form a total reflection layer. The light is transmitted axially through multiple total reflections inside the fiber, ultimately exiting through the light tube 7. The fiber is ejected from the end face and directly introduced into the inner cavity of the light guide tube 7. The light guide tube 7 is connected to the diffuser 4. Multiple photovoltaic panels 8 are embedded inside the support tube 6. The multiple photovoltaic panels 8 are arranged in a ring array with the axis of the support tube 6 as the array center. The support tube 6 is provided with a drive component for driving the light guide tube 7 to rise and fall. When the light guide tube 7 falls, part of the light emitted from the end of the light guide fiber 2 away from the light collector 1 illuminates the photovoltaic panel 8. The inner wall of the light guide tube 7 is a mirror structure. Except for the part of the inner wall of the support tube 6 where the photovoltaic panel 8 is installed, the rest is a mirror structure to reduce light loss.

[0031] Furthermore, mounting base 3 is fixedly equipped with mounting box 1 24 and mounting box 25. Mounting box 1 24 contains a battery pack (not shown in the figure), and mounting box 25 contains a photovoltaic inverter (not shown in the figure) and a control module (not shown in the figure). The photovoltaic panel 8 is electrically connected to the battery pack through the photovoltaic inverter, and the supplementary lighting component is electrically connected to the battery pack and to an external power source, so that the external power source can also supply power to the supplementary lighting component. When the photovoltaic panel 8 receives sunlight, it can charge the battery pack, and the battery pack can supply power to the supplementary lighting component. When the light intensity sensor detects that the light intensity emitted from the diffuser 4 is insufficient, the supplementary lighting component can provide supplementary lighting to increase the light intensity. The light intensity sensor has a built-in photoresistor or CMOS image sensor to collect the light intensity signal on the surface of the diffuser 4 in real time and convert the physical quantity of light intensity into a 0-5V analog electrical signal and transmit it to the control module. The control module has a pre-stored indoor light intensity standard threshold (generally 100-300 lux). After receiving the light intensity sensor signal, it converts the analog signal into a digital signal through an AD converter and compares it with the preset threshold. If the detected light intensity is lower than the lower limit of the preset threshold, the control module outputs a PWM (Pulse Width Modulation) signal to the LED driver circuit of the supplementary lighting component. By adjusting the duty cycle of the PWM signal, the operating current of the LED bead 13 is adjusted (e.g., when the duty cycle increases from 10% to 80%, the current increases from 100mA to 350mA), achieving a step-by-step increase in brightness. At the same time, the sensor feeds back the adjusted light intensity signal to the control module in real time, forming a closed-loop control until the detected light intensity stabilizes within the preset threshold range (e.g., fluctuation error ≤ ±5%). If the detected light intensity is higher than the upper limit of the threshold, the control module reduces the PWM duty cycle, reducing the brightness of the LED bead 13 or turning off the LED bead 13.

[0032] In this embodiment, preferably, the supplementary lighting component includes an annular mounting plate 12 and multiple LED beads 13. The annular mounting plate 12 and the LED beads 13 are both disposed on the diffuser cover 4. The annular mounting plate 12 is fixedly mounted on the bottom wall of the mounting base 3, and the multiple LED beads 13 are fixedly mounted on the bottom wall of the annular mounting plate 12. The battery pack is electrically connected to the LED beads 13 so that the battery pack can supply power to the LED beads 13. The control module is electrically connected to the LED beads 13 to control the operation of the LED beads 13.

[0033] In this embodiment, preferably, a second light guide tube 5 is fixedly installed at the top of the mounting base 3, and a support tube 6 is fixedly installed at the top of the second light guide tube 5. The second light guide tube 5 is connected to the inner cavity of the diffuser 4. The driving assembly includes an electric push rod 10 and a driving plate 11. The driving plate 11 is fixedly connected to the top of the outer peripheral wall of the first light guide tube 7. The electric push rod 10 is fixedly installed on the outer wall of the support tube 6. The output end of the electric push rod 10 penetrates the top wall of the second light guide tube 5, and the output end of the electric push rod 10 is fixedly connected to the driving plate 11. The control module is signal-connected to the electric push rod 10 to control the extension and retraction of the output end of the electric push rod 10. The extension and retraction of the output end of the electric push rod 10 can drive the driving plate 11 to move up and down, thereby driving the first light guide tube 7 to move up and down. When the light intensity sensor detects that the light intensity of the diffuser 4 is higher than the preset value, the light guide tube 7 can be moved up and down. If the threshold is exceeded and the duration exceeds 5 seconds (to avoid accidental triggering by instantaneous strong light), the light intensity sensor transmits a signal to the control module. The control module sends an extension signal to the electric push rod 10, causing the output end of the electric push rod 10 to extend, driving the drive plate 11 and the light guide tube 7 to move down synchronously. In the initial state, the top of the light guide tube 7 contacts the light guide seat 9, blocking all photovoltaic panels 8. As the light guide tube 7 moves down, the photovoltaic panels 8 on the inner wall of the support cylinder 6 are gradually exposed. After the exposed area of ​​the photovoltaic panels 8 increases, it absorbs some of the light inside the light guide tube 7, reducing the amount of light entering the diffuser 4. The light intensity sensor monitors the light intensity of the diffuser 4 in real time. When the light intensity drops to the preset threshold range, the control module sends a stop signal, and the electric push rod 10 stops extending and retracting. If the light intensity is still higher than the threshold, the control module continues to control the electric push rod 10 to extend until the light intensity reaches the standard.

[0034] In practical use, when the light-collecting dome 1 receives sunlight from the outside, the light is guided through the optical fiber 2 into the interior of the light guide tube 7, and then through the second light guide tube 5 into the diffuser 4. After being diffused by the diffuser 4, the light illuminates the room. When the light sensor detects that the light intensity emitted by the diffuser 4 is low, it controls the LED beads 13 to provide supplemental lighting, gradually increasing the brightness of the LED beads 13 until the light intensity detected by the light sensor reaches a suitable range (generally 100-300 lux). When the light sensor detects that the light emitted by the diffuser 4 is strong, it controls the electric push rod 10. The output end extends so that the light guide tube 7 moves downward through the drive plate 11, so that the inner cavity of the support tube 6 is connected to the inner cavity of the light guide tube 7, thereby allowing some light to shine onto the photovoltaic panel 8. The photovoltaic panel 8 absorbs some of the light, reducing the amount of light entering the diffuser 4, and thus reducing the light intensity of the diffuser 4. The greater the downward distance of the light guide tube 7, the larger the area of ​​the photovoltaic panel 8 that participates in receiving the optical fiber, and the lower the light intensity emitted by the diffuser 4, until the light sensor detects that the light intensity has reached a suitable range, thereby realizing the adaptive adjustment of the light intensity brightness.

[0035] Please see Figures 4-9 In this embodiment of the invention, the adaptive brightness-adjustable building light guide system further includes multiple millimeter-wave radars (not shown in the figure). The millimeter-wave radars are installed indoors to monitor whether anyone is present. The millimeter-wave radars are connected to the control module. By actively transmitting and receiving millimeter waves, the millimeter-wave radars utilize the human body's reflection characteristics of electromagnetic waves to capture signal differences between the human body and the surrounding environment to identify the presence of anyone. They can also sense subtle dynamics such as human breathing and slight limb movements to further confirm the presence of a static person, and are unaffected by indoor environmental factors such as light, dust, and temperature. A reflective disc 14 is installed inside the diffuser 4. A vertical rod 15 is fixedly installed on the inner top wall of the second light guide tube 5. The reflective disc 14 is rotatably connected to the vertical rod 15. A transmission assembly for driving the reflective disc 14 to rotate is provided at the bottom of the drive plate 11. A [missing information - likely a device or component] is fixedly installed on the reflective disc 14. A connecting shaft 16 passes through the reflector disc 14. One end of the connecting shaft 16 is rotatably connected to the upright 15, and the other end of the connecting shaft 16 is fixedly fitted with a gear 19. A stop block 20 for limiting the rotation angle of the reflector disc 14 is fixedly installed on the bottom of the side wall of the upright 15 near the reflector disc 14. When the reflector disc 14 is in a vertical state, the reflector disc 14 contacts the side wall of the stop block 20. When the reflector disc 14 is in a horizontal state, the reflector disc 14 contacts the top wall of the stop block 20. An installation cylinder 17 is fixedly installed on the bottom of the side wall of the upright 15 away from the reflector disc 14. The end of the connecting shaft 16 away from the gear 19 extends into the installation cylinder 17, and the connecting shaft 16 and the installation cylinder 17 are rotatably engaged. A torsion spring 18 is provided inside the installation cylinder 17. One end of the torsion spring 18 is fixedly connected to the inner wall of the installation cylinder 17, and the other end of the torsion spring 18 is fixedly connected to the connecting shaft 16.

[0036] The side wall of the reflective disc 14 away from the stop block 20 is provided with a convex mirror structure 1401. When the reflective disc 14 is rotated to a horizontal state, the convex mirror structure 1401 is positioned toward the light guide tube 7.

[0037] The transmission assembly includes a guide rail 21, a rack 22, and a spring 23. The guide rail 21 is fixedly installed at the bottom of the drive plate 11. The rack 22 is slidably connected to the guide rail 21 and is adapted to the gear 19. The top of the rack 22 is elastically connected to the top inner wall of the guide rail 21 through the spring 23. When the rack 22 and the gear 19 are not in contact, the upright plate is in a vertical state under the action of the torsion spring 18.

[0038] When the millimeter-wave radar detects that no one is in the room, the electric push rod 10 drives the drive plate 11 to move downward. As the drive plate 11 moves downward, it drives the guide rail 21 and rack 22 downward. When rack 22 contacts gear 19, as rack 22 continues to move downward, it drives gear 19 to rotate. The rotation of gear 19 drives the reflector plate 14 to rotate via connecting shaft 16. When reflector plate 14 rotates 90°, it contacts the top wall of stop block 20, preventing it from rotating further. At this point, as drive plate 11 moves downward, rack 22 cannot move further, thus compressing spring 23. This causes rack 22 to gradually retract into guide rail 21 until light guide tube 7 contacts reflector plate 14 or there is only a small gap, reducing the light emitted through diffuser 4 so that most of the light is absorbed by photovoltaic panel 8, thereby increasing the power generation of photovoltaic panel 8. When the millimeter-wave radar detects that someone is in the room... The electric push rod 10 drives the drive plate 11 to move upward, causing the rack 22 to drive the gear 19 to rotate in the opposite direction, thus placing the reflector 14 in a vertical position. The vertical reflector 14 can minimize the reflected light, allowing most of the light to illuminate the diffuser 4. Furthermore, the convex mirror structure 1401 on the reflector 14 allows the light illuminating the reflector 14 to be reflected in a divergent manner when the reflector 14 is in a horizontal position, reducing the amount of light directly reflected to the bottom of the light guide fiber 2. This allows most of the light to be absorbed by the photovoltaic panel 8, thereby improving power generation efficiency. It can also reduce the indoor light intensity when no one is in the room, on the one hand, avoiding the accelerated aging of indoor items due to prolonged exposure to sunlight, and on the other hand, improving the power generation efficiency of the photovoltaic panel 8, effectively utilizing sunlight. Moreover, by protecting the photovoltaic panel 8 inside the support cylinder 6, it is protected from the effects of harsh external environments, thus extending its service life.

[0039] The above description is only a preferred embodiment of the present invention. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of this patent application are included in the scope of this patent application.

Claims

1. An adaptive brightness-adjustable building light guide lighting system, comprising a mounting base (3), a light intensity sensor, a light guide fiber (2), a diffuser (4), a light-collecting cover (1) fixedly disposed at the bottom of the mounting base (3), a support cylinder (6) disposed at the top of the mounting base (3), and a light guide cylinder (7) slidably disposed inside the support cylinder (6), wherein the light intensity sensor is disposed indoors for monitoring the light intensity of the diffuser (4), characterized in that: The diffuser (4) is equipped with a supplementary lighting component. Multiple optical fibers (2) are provided. One end of the optical fiber (2) extends into the light-collecting cover (1), and the other end of the optical fiber (2) extends into the light guide tube (7). The light guide tube (7) is connected to the diffuser (4). Multiple photovoltaic panels (8) are embedded in the support tube (6). The support tube (6) is equipped with a drive component for driving the light guide tube (7) to rise and fall. When the light guide tube (7) falls, part of the light emitted from the end of the optical fiber (2) away from the light-collecting cover (1) shines on the photovoltaic panel (8). Mounting box one (24) and mounting box two (25) are fixedly installed on the mounting base (3). Mounting box one (24) contains a battery pack, and mounting box two (25) contains a photovoltaic inverter and a control module. The photovoltaic panel (8) is electrically connected to the battery pack through the photovoltaic inverter, and the supplementary lighting component is electrically connected to the battery pack. The supplementary lighting assembly includes an annular mounting plate (12) and multiple LED beads (13). The annular mounting plate (12) and the LED beads (13) are both disposed on the diffuser cover (4). The annular mounting plate (12) is fixedly mounted on the bottom wall of the mounting base (3). The multiple LED beads (13) are all fixedly mounted on the bottom wall of the annular mounting plate (12). The battery pack is electrically connected to the LED beads (13). The top of the mounting base (3) is fixedly installed with a light guide tube two (5), and the support tube (6) is fixedly installed on the top of the light guide tube two (5). The light guide tube two (5) is connected to the inner cavity of the diffuser (4). The driving assembly includes an electric push rod (10) and a driving plate (11). The driving plate (11) is fixedly connected to the top of the outer peripheral wall of the first light guide tube (7). The electric push rod (10) is fixedly installed on the outer wall of the support tube (6). The output end of the electric push rod (10) penetrates the top wall of the second light guide tube (5), and the output end of the electric push rod (10) is fixedly connected to the driving plate (11).

2. The adaptive brightness adjustment building light guide lighting system according to claim 1, characterized in that: The diffuser (4) is provided with a reflector disc (14) inside. A pole (15) is fixedly installed on the inner wall of the top wall of the light guide tube (5). The reflector disc (14) is rotatably connected to the pole (15). The bottom end of the drive plate (11) is provided with a transmission component for driving the reflector disc (14) to rotate. A connecting shaft (16) is fixedly installed on the reflector disc (14). The connecting shaft (16) passes through the reflector disc (14). One end of the connecting shaft (16) is rotatably connected to the upright (15). A gear (19) is fixedly fitted on the other end of the connecting shaft (16). A stop block (20) for limiting the rotation angle of the reflector disc (14) is fixedly installed on the bottom of the side wall of the upright (15) near the reflector disc (14). When the reflector disc (14) is in a vertical state, the reflector disc (14) contacts the side wall of the stop block (20). When the reflector disc (14) is in a horizontal state, the reflector disc (14) contacts the top wall of the stop block (20). An mounting cylinder (17) is fixedly installed at the bottom of the side wall away from the reflector (14) of the upright (15). One end of the connecting shaft (16) away from the gear (19) extends into the mounting cylinder (17), and the connecting shaft (16) and the mounting cylinder (17) are rotatably engaged. A torsion spring (18) is provided inside the mounting cylinder (17). One end of the torsion spring (18) is fixedly connected to the inner wall of the mounting cylinder (17), and the other end of the torsion spring (18) is fixedly connected to the connecting shaft (16). The transmission assembly includes a guide rail (21), a rack (22) and a spring (23). The guide rail (21) is fixedly installed at the bottom end of the drive plate (11). The rack (22) is slidably connected to the guide rail (21). The rack (22) is adapted to the gear (19). The top end of the rack (22) is elastically connected to the top inner wall of the guide rail (21) through the spring (23). When the rack (22) and the gear (19) are not in contact, the upright plate is in a vertical state under the action of the torsion spring (18). The adaptive brightness-adjusting building light guide system also includes multiple millimeter-wave radars, which are installed indoors to monitor whether anyone is inside.

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