An energy-saving lighting and ventilation system

Abstract

This invention discloses an energy-saving lighting and ventilation system, relating to the field of energy-saving doors and windows technology. It includes a window frame and a window sash hinged to the frame, and a locking mechanism installed on the sash. A limiting groove matching the locking mechanism is fixedly connected to the inner wall of the window frame. A pressing frame is movably embedded on the outer side of the window sash, and an airbag is provided inside the sash. The locking mechanism controls the inflation state of the airbag during adjustment. A sealing strip in contact with the pressing frame is installed on the inner side of the window frame. This invention, by setting an airbag controlled by the locking mechanism, inflates and expands when the user operates the locking mechanism to the locked state, producing a dual effect. On the one hand, if the window sash is closed, the inflated airbag pushes the pressing frame on the outer side of the window sash outward, causing it to forcefully press the sealing strip on the inner side of the window frame, achieving a dynamic and highly airtight seal. On the other hand, through pneumatic coupling, it drives the check valve support mechanism into a bidirectional constraint state.

Description

Technical Field

[0001] This invention relates to the field of energy-saving doors and windows technology, specifically to an energy-saving lighting and ventilation system. Background Art

[0002] Windows play an important role in lighting and ventilation, and are a major channel connecting the interior and exterior spaces of a building. The design of energy-efficient windows not only needs to meet the lighting needs of daily life, but also needs to have good heat insulation, ventilation and safety performance.

[0003] The existing patent application, with publication number CN210948125U and publication date of July 7, 2020, is titled "An Inward-Opening Window Ventilation Adjustment Device." This patent describes a window frame fixedly connected to a wall, a window sash rotatably connected to the window frame, a support rod rotatably connected to the lower surface of the window sash, a connecting hole at one end of the support rod, a buckle slidably connected to the lower surface of the inner wall of the window frame, and a positioning block installed on the lower surface of the inner wall of the window frame. The buckle engages with the connecting hole. A limiting mechanism is provided between the window sash and the window frame to limit the opening size of the window sash. By engaging one end of the support rod with the buckle, the sliding position of the buckle on the inner wall of the window frame can be positioned by the position of the positioning block. The limiting mechanism limits the opening size of the window sash. This design is simple in structure, easy to operate, facilitates adjustment of the window sash opening size, and reduces the danger of children accidentally opening the window.

[0004] The aforementioned application has shortcomings. First, regarding airtightness, when standard sliding windows are closed, the seal between the window sash and the window frame relies heavily on the deformation and compression of the fixed sealing strip. The amount of compression is usually fixed and difficult to adjust dynamically according to needs. Especially when there is a large temperature difference or after a period of use, the sealing strip may age, deform, or fail to completely fill the gaps, leading to significant infiltration of hot and cold air and increasing the energy consumption for building heating and cooling. At the same time, conventional windows usually require additional support rods or limiters to fix the opening and prevent the window sash from accidentally closing or violently impacting the window frame under wind force, causing damage or even personal injury. However, such independent support mechanisms are cumbersome and have precision parts, and in windy weather, support failure or window sash swinging back and impact may still occur. In addition, although some locks and limiters have been designed with linkage, there is a lack of overall coordination with the window frame sealing performance and the window sash's wind resistance function when open, resulting in an overall user experience that needs improvement. Summary of the Invention

[0005] The purpose of this invention is to provide an energy-saving lighting and ventilation system to overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An energy-saving lighting and ventilation system includes a window frame and a window sash hinged to the window frame, and a locking mechanism installed on the window sash. A limiting groove matching the locking mechanism is fixedly connected to the inner wall of the window frame. A pressing frame is movably embedded on the outer side of the window sash. An airbag is provided inside the window sash. The locking mechanism controls the inflation state of the airbag during adjustment. A sealing strip in contact with the pressing frame is installed on the inner side of the window frame. A check-back support mechanism is connected to both the window frame and the window sash, used to provide one-way check-back for the opened window sash. The airbag is pneumatically coupled to both the locking mechanism and the check-back support mechanism. When the locking mechanism is in the locked state, the airbag is inflated to push the pressing frame and to subject the check-back support mechanism to bidirectional restraint.

[0008] Preferably, the locking mechanism includes a handle rotatably mounted on the inside of the window sash, a locking rod vertically slidably mounted on the window sash and connected to the handle, and a locking pin fixedly connected to the locking rod and matching the limiting groove.

[0009] Preferably, a piston rod is installed inside the locking rod, and a cylinder for moving the piston rod is installed inside the window sash, with one end of the cylinder connected to the airbag.

[0010] Preferably, the outer side of the window sash has a receiving groove that matches the shape of the pressing frame, and one side of the pressing frame passes through the receiving groove and is fixedly connected to a plurality of top springs that abut against the inner wall of the window sash.

[0011] Preferably, the anti-reverse support mechanism includes a connecting seat vertically slidably installed on the window sash and a sleeve fixedly connected to the inner side of the window frame. A threaded rod is fixedly connected to the bottom of the connecting seat, and a plug is rotatably connected to the bottom end of the threaded rod. A snap-fit ​​bracket matching the plug is fixedly connected to the bottom of the sleeve, and anti-reverse teeth matching the plug are fixedly connected to both sides of the inner wall of the snap-fit ​​bracket.

[0012] Preferably, the connector includes a plug plate rotatably mounted on the bottom end of the screw, the plug plate having an air storage cavity, and wedge-shaped locking blocks elastically embedded on both sides of the air storage cavity, the wedge-shaped locking blocks engaging with check teeth.

[0013] Preferably, an air supply hose is installed between the airbag and the air storage chamber. When the window is closed, the locking mechanism is adjusted to the locked state, which forces the airbag to inflate and sends part of the gas into the insert plate through the air supply hose to push the wedge-shaped block outward.

[0014] Preferably, a limiting component is slidably installed on the top of the insert plate to restrict the outward movement of the wedge-shaped block. When the wedge-shaped block is squeezed by the anti-return teeth, the limiting component is pulled to keep the wedge-shaped block always in the gas storage chamber.

[0015] Preferably, a drainage groove is provided on the inner side of the window frame below the window sash, and a scraper is movably installed at the bottom of the window sash, the scraper being fixedly connected to the bottom of the pressing frame.

[0016] Preferably, multiple connecting rods are installed between the scraper and the pressing frame, and the same counterweight pressing rod is installed through each of the connecting rods. An abutting tooth plate that abuts against the counterweight pressing rod is fixedly connected to the inner wall of the window sash.

[0017] In the above technical solution, by setting an airbag controlled by a locking mechanism, when the user operates the locking mechanism to place it in the locked state, the airbag inflates, producing a dual effect. On the one hand, if the window sash is closed, the inflated airbag pushes outward against the pressing frame on the outside of the window sash, causing it to forcefully press against the sealing strip on the inside of the window frame, achieving a dynamic and highly airtight seal. After the window sash is closed and locked, an airtight barrier is formed, minimizing the disorderly exchange of indoor and outdoor hot and cold air, significantly reducing the building's heating and cooling load, and achieving energy conservation and emission reduction. On the other hand, through... Pneumatic coupling drives the anti-backflow support mechanism into a bidirectional constraint state, preventing the window sash from opening accidentally when it is not unlocked, making the closure between the window sash and the window frame more secure. A single-point operation of the locking mechanism can simultaneously complete the dual locking functions of locking the window, enhancing the seal, and activating the anti-backflow support mechanism. When the window sash is unlocked and opened, the anti-backflow support mechanism will switch to a one-way anti-backflow support state, allowing the window sash to open smoothly and the opening degree to be freely adjusted. However, when there is a reverse wind force or an attempt to close the window sash, it provides a stable support force, greatly avoiding the risk of damage or pinching caused by the window sash swinging back and impacting.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0019] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of an energy-saving lighting and ventilation system according to the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure of an energy-saving lighting and ventilation system according to the present invention;

[0023] Figure 3 This is a schematic diagram of the window sash in an energy-saving lighting and ventilation system according to the present invention;

[0024] Figure 4 For the present invention Figure 3 Enlarged view of point A;

[0025] Figure 5 This is a schematic diagram of the window sash and push-button frame in an energy-saving lighting and ventilation system according to the present invention;

[0026] Figure 6 This is a schematic diagram of the backflow prevention support mechanism in an energy-saving lighting and ventilation system according to the present invention.

[0027] Figure 7 This is a schematic diagram of the connector structure in an energy-saving lighting and ventilation system according to the present invention;

[0028] Figure 8 This is a schematic diagram showing the connection between the pressing frame and the scraper in an energy-saving lighting and ventilation system according to the present invention;

[0029] Figure 9 This is a schematic diagram of the locking mechanism in an energy-saving lighting and ventilation system according to the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Window frame; 101. Sealing strip; 102. Drainage channel; 2. Window sash; 201. Receiving groove; 202. Abutment tooth plate; 3. Locking mechanism; 301. Handle; 302. Locking rod; 303. Locking pin; 304. Piston rod; 305. Cylinder; 306. Transmission gear; 307. Tooth groove; 4. Limiting groove; 5. Pressing frame; 501. Top spring; 6. Airbag; 60 1. Gas delivery hose; 7. Check valve support mechanism; 701. Connecting seat; 702. Sleeve; 703. Screw; 705. Clip-on bracket; 706. Check valve tooth; 71. Insert connector; 711. Insert plate; 712. Wedge-shaped locking block; 713. Gas storage chamber; 714. Stop bar; 715. Connecting spring; 8. Limiting assembly; 9. Scraper bar; 901. Connecting rod; 902. Counterweight pressure bar. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0033] Please see Figure 1-9 This invention provides an energy-saving lighting and ventilation system, including a window frame 1 and a window sash 2 hinged to the window frame 1, and a locking mechanism 3 installed on the window sash 2. A limiting groove 4 matching the locking mechanism 3 is fixedly connected to the inner wall of the window frame 1. A pressing frame 5 is movably embedded on the outer side of the window sash 2. An airbag 6 is provided inside the window sash 2. The locking mechanism 3 controls the inflation state of the airbag 6 when it is adjusted. A sealing strip 101 in contact with the pressing frame 5 is installed on the inner side of the window frame 1. A check-back support mechanism 7 is connected to the window frame 1 and the window sash 2 respectively, and is used to perform one-way check-back on the opened window sash 2. The airbag 6 is pneumatically coupled to the locking mechanism 3 and the check-back support mechanism 7. When the locking mechanism 3 is in the locked state, the airbag 6 is inflated to push the pressing frame 5 and to make the check-back support mechanism 7 in a bidirectional restraint state.

[0034] Specifically, the window frame 1 is fixed to the building wall, and the sealing strip 101 is embedded in the reserved groove in the window frame 1 near the interior. The window sash 2 is connected to the window frame 1 via hinges and can rotate around an axis to open and close. The locking mechanism 3 is located on the side of the window sash 2 away from the hinges. During use, the locking mechanism 3 on the window sash 2 can be adjusted to cooperate with the limiting groove 4 in the window frame 1 to lock the window frame 1 and the window sash 2 together, preventing the window sash 2 from being accidentally opened. The airbag 6 hidden inside the window sash 2 is connected to the locking mechanism 3 and the anti-reverse support mechanism 7 via air passages. When the window sash 2 is closed, as the user adjusts the locking mechanism 3 to the locked state, the locking mechanism 3 inflates the airbag 6. The inflated airbag 6 pushes the pressing frame 5 outward, causing it to forcefully press the sealing strip 101 in the window frame 1, forming a dynamic high-pressure sealing interface to prevent air penetration. At the same time, the gas in the airbag 6 is transmitted to the anti-reverse support mechanism through pipelines. Mechanism 7 pushes its internal structure to engage, switching from a one-way check mechanism to a two-way constraint mode, preventing the window sash 2 from swinging in both directions. The window sash 2 is firmly locked to the window frame 1, improving airtightness, significantly reducing heat exchange, and lowering energy consumption. Single-point operation achieves the triple functions of "locking + sealing enhancement + preventing accidental opening". When the user operates the locking mechanism 3 in the opposite direction to unlock, the locking mechanism 3 causes the airbag 6 to deflate and contract. After the pressing frame 5 loses its thrust, it disengages from the sealing strip 101. The check mechanism 7 also loses its air pressure drive, thus switching to a one-way check state, allowing the window sash 2 to open outwards only and preventing it from closing inwards. The user can freely push the window sash 2 open and adjust the opening angle. In case of strong winds in the opposite direction, the check mechanism 7 responds immediately, providing reverse resistance to prevent the window sash 2 from hitting the window frame 1. Before closing the window sash 2, the check mechanism 7 must be adjusted to avoid rapid closing that could cause pinching.

[0035] Compared with the prior art, the embodiments of the present invention, by setting an airbag 6 controlled by a locking mechanism 3, inflates the airbag 6 when the user operates the locking mechanism 3 to lock it, producing a dual effect. On the one hand, if the window sash 2 is closed, the inflated airbag 6 pushes the pressing frame 5 on the outside of the window sash 2 outward, causing it to forcefully press the sealing strip 101 on the inside of the window frame 1, achieving a dynamic and highly airtight seal. After the window sash 2 is closed and locked, an airtight barrier is formed, minimizing the disorderly exchange of indoor and outdoor hot and cold air, significantly reducing the building's heating and cooling load, and achieving energy conservation and emission reduction. On the other hand, Through pneumatic coupling, the anti-backflow support mechanism 7 is driven into a bidirectional constraint state to prevent the window sash 2 from opening accidentally when it is not unlocked, making the closure between the window sash 2 and the window frame 1 more secure. The single-point operation of the locking mechanism 3 can simultaneously complete the dual locking functions of locking the window, enhancing the seal, and activating the anti-backflow support mechanism 7. When the window sash 2 is unlocked and opened, the anti-backflow support mechanism 7 will switch to a unidirectional anti-backflow support state, allowing the window sash 2 to open smoothly and adjust the opening degree freely. However, when there is a reverse wind force or an attempt to close the window sash 2, it provides a stable support force, greatly avoiding the risk of damage or pinching caused by the swinging impact of the window sash 2.

[0036] In a further technical solution of the present invention, the locking mechanism 3 includes a handle 301 rotatably mounted on the inner side of the window sash 2, a locking rod 302 vertically slidably mounted on the window sash 2 and connected to the handle 301, and a locking pin 303 that matches the limiting groove 4 is fixedly connected to the locking rod 302. The handle 301 drives the transmission gear 306 located inside the window sash 2 to rotate through a rotating shaft. The side wall of the locking rod 302 has a toothed groove 307 to mesh with the gear 306. Specifically, when the user rotates the handle 301, the locking rod 302 is driven to slide upward through the meshing of the internal transmission gear 306 and the toothed groove 307. After the locking pin 303 is inserted into the limiting groove 4 on the window frame 1, it is physically locked. When the window sash 2 is closed and the window is forcibly opened, the locking pin 303 and the limiting groove 4 form a mechanical interlock to resist external damage.

[0037] In a further technical solution of the present invention, a piston rod 304 is installed inside the locking rod 302, and a cylinder 305 for the piston rod 304 to move is installed inside the window sash 2. One end of the cylinder 305 is connected to the airbag 6 through a pipeline. Specifically, when the window sash 2 is in the closed state, turning the handle 301 downwards causes the transmission gear to drive the locking rod 302 to slide upwards, causing the piston rod 304 to move upwards simultaneously. The piston rod 304 slides upwards inside the cylinder 305, compressing the gas inside the cylinder 305. The compressed gas is injected into the airbag 6 through the pipeline. The airbag 6 expands and pushes the pressing frame 5 to press the sealing strip 101. At the same time, the gas is then transported to... The anti-reverse support mechanism 7 is triggered to enter a bidirectional constraint state, thereby enabling the locking pin 303 to work with the anti-reverse support mechanism 7 to complete a double lock on the window sash 2, ensuring that the window sash 2 can be firmly closed. The handle 301 is rotated in the opposite direction, and the locking rod 302 slides down, causing the piston rod 304 to move down synchronously, expanding the volume of the cylinder 305 to generate negative pressure suction. The negative pressure draws the gas in the airbag 6 and the anti-reverse support mechanism 7 through the pipeline. The airbag 6 contracts and releases the thrust on the pressing frame 5. The anti-reverse support mechanism 7 returns to a one-way anti-reverse state, only preventing the window sash 2 from closing. The locking pin 303 disengages from the limiting groove 4, and the window sash 2 can be opened freely.

[0038] In a further technical solution of the present invention, a receiving groove 201 matching the shape of the pressing frame 5 is provided on the outer side of the window sash 2. One side of the pressing frame 5 passes through the receiving groove 201 and is fixedly connected to a plurality of top springs 501 that abut against the inner wall of the window sash 2. Specifically, when the locking mechanism 3 is not locked, the top springs 501 are in a stretched state, generating a continuous inward retraction force that pulls the pressing frame 5 completely into the receiving groove 201, making it flush with the opening of the receiving groove 201. This reduces the resistance to opening and closing the window and avoids unnecessary friction between the sealing strip 101 and the pressing frame 5. When the locking mechanism 3 is locked, the expansion thrust of the airbag 6 overcomes the tension of the top springs 501, allowing the pressing frame 5 to move outward.

[0039] In a further technical solution of the present invention, the anti-reverse support mechanism 7 includes a connecting seat 701 vertically slidably installed on the window sash 2 and a sleeve 702 fixedly connected to the inner side of the window frame 1. A screw 703 threaded through the sleeve 702 is fixedly connected to the bottom of the connecting seat 701. A plug-in 71 is rotatably connected to the bottom end of the screw 703. A snap-fit ​​bracket 705 matching the plug-in 71 is fixedly connected to the bottom of the sleeve 702. The plug-in 71 is inserted into the snap-fit ​​bracket 705, and the inner wall of the snap-fit ​​bracket 705 is... Both sides are fixedly connected with check teeth 706 that match the plug-in 71. Specifically, when the locking mechanism 3 is unlocked and the window sash 2 is opened, the screw 703 at the bottom of the connecting seat 701 will rotate and descend within the sleeve 702, causing the plug-in 71 to move down and contact the check teeth 706. The check teeth 706 can restrict the plug-in 71 from moving up, that is, prevent the screw 703 from reversing, thereby preventing the window sash 2 from closing, realizing one-way support for the window sash 2, allowing the window sash 2 to open freely, and making operation convenient.

[0040] The screw 703 can also be replaced with a plug rod with a slider. The sleeve 702 is equipped with a slanted groove (not shown in the figure) that matches the slider. When the window sash 2 is opened and rotates with the plug rod, the height of the slider and the plug rod can be adjusted by the slanted groove, which can also achieve the purpose of lowering the plug 71.

[0041] In a further technical solution of the present invention, the plug-in component 71 includes a plug plate 711 rotatably mounted on the bottom end of the screw 703. An air storage cavity 713 is provided in the plug plate 711. Wedge-shaped locking blocks 712 are elastically and movably embedded on both sides of the air storage cavity 713. The wedge-shaped locking blocks 712 engage with the check tooth 706. The bottom of one end of the wedge-shaped locking block 712 is inclined against the check tooth 706, and the other end is equipped with a connecting spring 715 connected to the inner wall of the air storage cavity 713. Specifically, in the unlocked state of the unlocking mechanism, neither the airbag 6 nor the air storage cavity 713 is filled with gas, but the connecting spring 715 can push out the wedge-shaped locking block 712. During the opening of the window sash 2, the screw 703 rotates and descends, allowing the wedge-shaped locking block 712 on the plug plate 711 to contact the check tooth 706. The wedge-shaped locking block 712 descends along the inclined surface of the teeth of the check tooth 706.

[0042] In a further technical solution of the present invention, an air supply hose 601 is installed between the airbag 6 and the air storage chamber 713. When the window sash 2 is closed, the locking mechanism 3 is adjusted to the locked state, forcing the airbag 6 to inflate. Part of the gas is then sent into the insert plate 711 through the air supply hose 601 to push the wedge-shaped locking block 712 outward. Specifically, when the window sash 2 is rotated in the closing direction, the wedge-shaped locking block 712 is blocked by the vertical surface of the check tooth 706. When the window sash 2 is closed and the locking mechanism 3 is locked, the airbag 6 inflates and is injected into the air storage chamber 713 through the air supply hose 601. The air pressure pushes the wedge-shaped locking block 712 outward, allowing the wedge-shaped locking blocks 712 on both sides to be completely embedded in the tooth roots of the check teeth 706 on both sides. The wedge-shaped locking blocks 712 are directly driven by the air storage chamber 713 to achieve rapid bidirectional locking and achieve a firm closure.

[0043] In a further technical solution of the present invention, a limiting component 8 for restricting the outward movement of the wedge-shaped block 712 is slidably installed on the top of the insert plate 711. When the wedge-shaped block 712 is squeezed by the check tooth 706, the limiting component 8 is pulled to keep the wedge-shaped block 712 always in the air storage cavity 713. A stop bar 714 is fixedly connected to the top of the wedge-shaped block 712. The limiting component 8 includes a limiting frame slidably connected to the top of the insert plate 711. The limiting frame is used to restrict the outward movement of the stop bar 714. A push-pull rod is fixed on the limiting frame. Specifically, when the wedge-shaped blocks 712 on both sides are squeezed into the air storage cavity 713 by the check tooth 706, the movement of the stop bar 714 on the wedge-shaped block 712 can be restricted by pulling the push-pull rod. Thus, when the window sash 2 is rotated, the wedge-shaped block 712 is disengaged from the check tooth 706, and the window sash 2 can be easily closed.

[0044] In a further technical solution of the present invention, a drainage groove 102 is provided on the inner side of the window frame 1 below the window sash 2, and a scraper 9 is movably installed at the bottom of the window sash 2. The scraper 9 is fixedly connected to the bottom of the pressing frame 5. Specifically, when the window sash 2 is closed and the locking mechanism 3 reaches the locked state, the pressing frame 5 can drive the scraper 9 to move in the drainage groove 102, scraping the rainwater remaining in the drainage groove 102 to the area near the drainage hole, so as to avoid the accumulation of rainwater.

[0045] In a further technical solution of the present invention, a plurality of connecting rods 901 are installed between the scraper 9 and the pressing frame 5, and a counterweight pressing rod 902 is installed through each connecting rod 901. An abutting tooth plate 202 that abuts against the counterweight pressing rod 902 is fixedly connected to the inner wall of the window sash 2. Specifically, when the scraper 9 moves in the drainage channel 102, it moves on the abutting tooth plate 202 with the counterweight pressing rod 902. The rainwater and debris attached to the surface of the scraper 9 are shaken off by the continuous collision between the counterweight pressing rod 902 and the abutting tooth plate 202, so as to prevent the rainwater remaining after the window sash 2 is opened from dripping into the room along the scraper 9.

[0046] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An energy-saving lighting and ventilation system, comprising a window frame (1) and a window sash (2) hinged to the window frame (1), characterized in that, Also includes: A locking mechanism (3) is installed on the window sash (2). A limiting groove (4) matching the locking mechanism (3) is fixedly connected to the inner wall of the window frame (1). A pressing frame (5) is movably embedded on the outer side of the window sash (2). An airbag (6) is provided inside the window sash (2). The locking mechanism (3) controls the inflation state of the airbag (6) when it is adjusted. A sealing strip (101) that contacts the pressing frame (5) is installed on the inner side of the window frame (1). The anti-return support mechanism (7) is connected to the window frame (1) and the window sash (2) respectively, and is used to perform one-way anti-return on the open window sash (2). The airbag (6) is pneumatically coupled to the locking mechanism (3) and the anti-return support mechanism (7). The anti-return support mechanism (7) includes a connecting seat (701) vertically slidably installed on the window sash (2) and a sleeve (702) fixedly connected to the inner side of the window frame (1). The bottom of the connecting seat (701) is fixedly connected to a screw (703) threaded through the sleeve (702). The bottom end of the screw (703) is rotatably connected to a plug (71). The bottom of the sleeve (702) is fixedly connected to a snap-fit ​​bracket (705) matching the plug (71). Both sides of the inner wall of the snap-fit ​​bracket (705) are fixedly connected to anti-return teeth (706) matching the plug (71). The connector (71) includes a plate (711) rotatably mounted on the bottom end of the screw (703). The plate (711) has an air storage cavity (713). Both sides of the air storage cavity (713) are elastically and movably fitted with wedge-shaped locking blocks (712). The wedge-shaped locking blocks (712) engage with the check teeth (706). An air supply hose (601) is installed between the airbag (6) and the air storage chamber (713). When the window sash (2) is closed, the locking mechanism (3) is adjusted to the locked state, forcing the airbag (6) to inflate and sending part of the gas into the insert plate (711) through the air supply hose (601) to push the wedge-shaped block (712) to move outward. A limiting component (8) is slidably installed on the top of the insert plate (711) to limit the outward movement of the wedge-shaped block (712). When the wedge-shaped block (712) is squeezed by the anti-return tooth (706), the limiting component (8) is pulled to keep the wedge-shaped block (712) always in the air storage chamber (713). When the locking mechanism (3) is in the locked state, the airbag (6) is inflated to push the pressing frame (5) and make the anti-return support mechanism (7) in a bidirectional restraint state.

2. The energy-saving lighting and ventilation system according to claim 1, characterized in that, The locking mechanism (3) includes a handle (301) rotatably mounted on the inside of the window sash (2), a locking rod (302) vertically slidably mounted on the window sash (2) and connected to the handle (301) in a transmission manner, and a locking pin (303) that matches the limiting groove (4) is fixedly connected to the locking rod (302).

3. The energy-saving lighting and ventilation system according to claim 2, characterized in that, A piston rod (304) is installed inside the locking rod (302), and a cylinder (305) for the piston rod (304) to move is installed inside the window sash (2). One end of the cylinder (305) is connected to the airbag (6).

4. The energy-saving lighting and ventilation system according to claim 1, characterized in that, The outer side of the window sash (2) is provided with a receiving groove (201) that matches the shape of the pressing frame (5). One side of the pressing frame (5) passes through the receiving groove (201) and is fixedly connected with a plurality of top springs (501) that abut against the inner wall of the window sash (2).

5. The energy-saving lighting and ventilation system according to claim 1, characterized in that, A drainage groove (102) is provided on the inner side of the window frame (1) below the window sash (2). A scraper (9) is movably installed at the bottom of the window sash (2), and the scraper (9) is fixedly connected to the bottom of the pressing frame (5).

6. The energy-saving lighting and ventilation system according to claim 5, characterized in that, Multiple connecting rods (901) are installed between the scraper (9) and the pressing frame (5), and the same counterweight pressing rod (902) is installed through each of the connecting rods (901). The inner wall of the window sash (2) is fixedly connected with an abutting tooth plate (202) that abuts against the counterweight pressing rod (902).

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