CN212108874U - Building energy-saving lighting and ventilating equipment - Google Patents

Building energy-saving lighting and ventilating equipment Download PDF

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Publication number
CN212108874U
CN212108874U CN202020855836.0U CN202020855836U CN212108874U CN 212108874 U CN212108874 U CN 212108874U CN 202020855836 U CN202020855836 U CN 202020855836U CN 212108874 U CN212108874 U CN 212108874U
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China
Prior art keywords
ventilation
pipe
basement
box
underground
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Expired - Fee Related
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CN202020855836.0U
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Chinese (zh)
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姜海涛
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Individual
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Individual
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/10Photovoltaic [PV]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00Integration of renewable energy sources in buildings
    • Y02B10/40Geothermal heat-pumps

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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The utility model relates to the technical field of lighting and ventilation equipment, in particular to building energy-saving lighting and ventilation equipment, which comprises a photovoltaic component and a basement roof, wherein the top of the basement roof is provided with a ventilation box, the top of the ventilation box is provided with the photovoltaic component, the bottom of the basement roof is connected with an underground component, and the photovoltaic component is electrically connected with the ventilation box and the underground component; the underground assembly comprises a transition pipe, a ventilation pipe, a lighting lamp and a conductive sliding plate, wherein the ventilation pipe is connected to one side of the transition pipe and communicated with the transition pipe; not only can save electric energy; moreover, dust entering the basement and the ventilation pipeline can be intercepted, and the ventilation pipeline can be conveniently cleaned, so that the basement and the ventilation pipeline are cleaner; meanwhile, the illuminating lamp can be conveniently moved to an area needing illumination.

Description

Building energy-saving lighting and ventilating equipment
Technical Field
The utility model relates to an illumination ventilation equipment technical field specifically says to a building energy saving illumination ventilation equipment.
Background
On some building sites, some house construction in particular, will all build short basement usually, and the air quality of basement is poor, and light is also not good, mostly will use some integrative equipment of illumination ventilation to throw light on and ventilate, the use of the basement of being convenient for, so some illumination ventilation equipment are in continuous improvement research and development.
However, analysis shows that the existing lighting and ventilation equipment has large electric energy loss and cannot save energy; moreover, when the lighting and ventilating device is used for ventilating, some dust can be brought into the ventilating duct and the basement, and the ventilating duct and the basement cannot be kept clean; meanwhile, the illuminating lamp in the existing illuminating and ventilating equipment cannot be adjusted and moved to an area needing illumination.
SUMMERY OF THE UTILITY MODEL
Therefore, in order to solve the above-mentioned deficiencies, the utility model provides a building energy-saving lighting and ventilating device, which can save electric energy; moreover, dust entering the basement and the ventilation pipeline can be intercepted, and the ventilation pipeline can be conveniently cleaned, so that the basement and the ventilation pipeline are cleaner; meanwhile, the illuminating lamp can be conveniently moved to an area needing illumination.
The utility model is realized in such a way, a building energy-saving lighting and ventilating device is constructed, which comprises a photovoltaic component and a basement roof, wherein the top of the basement roof is provided with a ventilating box, the top of the ventilating box is provided with the photovoltaic component, the bottom of the basement roof is connected with an underground component, and the photovoltaic component is electrically connected with the ventilating box and the underground component; the ventilation box comprises a support frame, a ventilation fan, an iron retaining door, a grounding pipeline and heat dissipation holes, the support frame is arranged inside the ventilation box, the ventilation fan is connected to the top of the support frame, the iron retaining door is hinged to one side of the ventilation box, one end of the grounding pipeline is connected to the back of the ventilation fan, the other end of the grounding pipeline penetrates through the support frame and the ventilation box to enter the ground and communicate with an underground component, the heat dissipation holes are formed in the top of the ventilation box, and a; the photovoltaic module comprises a photovoltaic panel, a protective cover, a controller, an inverter and a storage battery, the photovoltaic panel is arranged outside the protective cover, the controller, the inverter and the storage battery are arranged inside the protective cover, the controller, the inverter and the storage battery are electrically connected, and meanwhile, the controller, the inverter and the storage battery are electrically connected with the photovoltaic panel; the underground assembly comprises a transition pipe, a ventilation pipe, a lighting lamp and a conductive sliding plate, the ventilation pipe is connected to one side of the transition pipe, the ventilation pipe and the transition pipe are communicated, one end of the conductive sliding plate is connected to one side of the top of the transition pipe, the top of the conductive sliding plate is connected to the bottom of a top plate of a basement, the lighting lamp is connected to the bottom of the electric sliding plate in a sliding manner, and the underground assembly.
Further, the transition pipe bottom is equipped with the funnel kerve, funnel kerve bottom is connected with the cap, transition pipe intercommunication ground connection pipeline, when the transition pipe receives the air current that ground connection pipeline transmitted, the air current descends along the transition pipe and flows, when flowing to the scavenge pipe and transition pipe intercommunication department, flow through the scavenge pipe, some great heavier dusts in the air current simultaneously continue to sink into the funnel kerve along the decline of transition pipe because weight and gravity inertia, open the cap, conveniently clear up the dust of long-time deposit.
Further, the scavenge pipe includes the internal thread, strain dirt screen panel and external screw thread, the internal thread is seted up in scavenge pipe one end inboardly, it imbeds in scavenge pipe one end to strain the dirt screen panel, the external screw thread has been seted up in the dirt screen panel outside, it is inboard that the dirt screen panel passes through external screw thread screw in scavenge pipe one end, it dismantles to make things convenient for the installation of dirt screen panel, when the air current that draws through transition pipe connector passed the scavenge pipe and gets into the basement, the inside less dust of air current is filtered in the scavenge pipe by the dirt screen panel, then take out the dirt screen panel, the convenience is cleared up the dust in the scavenge pipe.
Furthermore, the top of the illuminating lamp is connected with a top clamping plate, two sides of the top clamping plate are connected with side plates, one side of each side plate is connected with a T-shaped sliding block, threaded through holes penetrate through the middle parts of the T-shaped sliding block and the side plates, a screw rod is embedded in each threaded through hole and penetrates through each threaded through hole, one end of each screw rod is provided with an insulating handle, the other end of each screw rod is provided with a limiting ring, the other end of each screw rod is connected with a wire of the illuminating lamp, the illuminating lamp is embedded into a T-shaped sliding groove formed in two sides of each conductive sliding plate through the T-shaped sliding block and is pushed to slide at the bottom of each electric sliding plate, when the illuminating lamp slides to a proper position, the screw rod is rotated by screwing the insulating handle, the screw rod is tightly attached to the surface of a metal sheet in each T-shaped sliding groove, the illuminating lamp is pushed to a proper position for illumination.
Furthermore, T-shaped sliding grooves are formed in two sides of the conductive sliding plate, metal sheets are connected to the inner sides of the T-shaped sliding grooves and connected with a storage battery power supply through wires, and an on-off switch is connected in series.
The utility model discloses an improve and provide a building energy saving illumination ventilation equipment here, compare with current illumination ventilation equipment, have following advantage: not only can save electric energy; moreover, dust entering the basement and the ventilation pipeline can be intercepted, and the ventilation pipeline can be conveniently cleaned, so that the basement and the ventilation pipeline are cleaner; simultaneously, can with the convenient removal of light to the region that needs the illumination, embody:
the method has the advantages that: the photovoltaic module is well installed at the top of the ventilation box, the photovoltaic panel is installed around, sunlight in different time periods can be effectively absorbed, when the photovoltaic panel absorbs the sunlight and converts the sunlight into electric energy, the electric energy is converted into alternating current through the inverter to be input into the storage battery for storage, then the storage battery is controlled through the controller to avoid overcharge or overdischarge, and then the ventilating fan and the illuminating lamp are connected with the power supply of the storage battery, so that the purpose of saving the electric energy is achieved.
The method has the advantages that: starting the ventilator, sending external air into the transition pipe through the grounding pipeline by the ventilator, and filtering out impurities in the airflow extracted by the ventilator by the filter screen cover to reduce the input of dust; the transition pipe is communicated with the grounding pipeline, when the transition pipe receives the airflow transmitted by the grounding pipeline, the airflow descends along the transition pipe to flow, when the airflow flows to the position where the ventilation pipe is communicated with the transition pipe, the airflow flows out through the ventilation pipe, meanwhile, some larger and heavier dust in the airflow continuously descends along the transition pipe to sink into the bottom groove of the funnel due to the weight and gravity inertia, and the cap is opened, so that the dust deposited for a long time can be conveniently cleaned; when the air current that draws through the transition pipe passes and crosses the scavenge pipe and gets into the basement, the inside less dust of air current is strained the dirt screen panel and is filtered in the scavenge pipe, then will strain the dirt screen panel and take out, and the convenience will be filtered and is cleared up the dust in the scavenge pipe, can make basement and air pipe cleaner.
The method has the advantages that: promote the light and slide in electric slide bottom, when sliding to suitable position, through twisting insulating handle rotating screw rod, the screw rod is hugged closely toward the inside sheetmetal surface of T shape spout through the screw thread through-hole, then the power of switch-on sheetmetal intercommunication, and the light is bright, through promoting the light and slide in electric slide bottom when metal fragment switching on, the position of adjustment light that can be convenient promotes the light and throws light to suitable position.
Drawings
Fig. 1 is a schematic structural view of the energy-saving lighting and ventilating device for building of the present invention;
FIG. 2 is a schematic view of the structure of the ventilation box of the present invention;
FIG. 3 is a schematic view of the underground assembly of the present invention;
fig. 4 is a schematic structural view of the ventilation tube of the present invention;
fig. 5 is a schematic view of the structure of the lighting lamp of the present invention;
fig. 6 is a schematic view of the structure of the conductive sliding plate of the present invention.
Sequence numbers shown in the figures: the ventilation box 1, the photovoltaic module 2, the underground module 3, the basement roof 4, the support frame 11, the ventilation fan 12, the iron block door 13, the grounding pipeline 14, the heat dissipation holes 15, the filter screen 121, the photovoltaic panel 21, the protective cover 22, the controller 23, the inverter 24, the storage battery 25, the transition pipe 31, the ventilation pipe 32, the lighting lamp 33, the conductive sliding plate 34, the funnel bottom slot 311, the cap 312, the internal thread 321, the dust filter screen 322, the external thread 323, the top clamping plate 331, the side plate 332, the T-shaped sliding block 333, the screw 334, the insulating handle 335, the limiting ring 336, the threaded through hole 337, the T-shaped sliding groove 341 and the metal sheet 342.
Detailed Description
The present invention will be described in detail below with reference to the attached drawings, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention; furthermore, the terms "first," "second," "third," "upper, lower, left, right," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Meanwhile, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a building energy-saving lighting ventilation equipment through improvement, as shown in the attached drawing of the specification, the implementation can be carried out according to the following mode; the ventilating box comprises a photovoltaic module 2 and a basement top plate 4, wherein a ventilating box 1 is installed on the top of the basement top plate 4, the photovoltaic module 2 is installed on the top of the ventilating box 1, an underground module 3 is connected to the bottom of the basement top plate 4, and the photovoltaic module 2 is electrically connected with the ventilating box 1 and the underground module 3; the ventilation box 1 comprises a support frame 11, an air exchange fan 12, an iron retaining door 13, a grounding pipeline 14 and heat dissipation holes 15, the support frame 11 is installed inside the ventilation box 1, the air exchange fan 12 is connected to the top of the support frame 11, the iron retaining door 13 is hinged to one side of the ventilation box 1, one end of the grounding pipeline 14 is connected to the back of the air exchange fan 12, the other end of the grounding pipeline 14 penetrates through the support frame 11 and the ventilation box 1 to enter the underground and communicated underground assembly 3, the heat dissipation holes 15 are formed in the top of the ventilation box 1, and a filter; the photovoltaic module 2 comprises a photovoltaic panel 21, a protective cover 22, a controller 23, an inverter 24 and a storage battery 25, the photovoltaic panel 21 is installed outside the protective cover 22, the controller 23, the inverter 24 and the storage battery 25 are installed inside the protective cover 22, the controller 23, the inverter 24 and the storage battery 25 are electrically connected, and meanwhile, the controller 23, the inverter 24 and the storage battery 25 are electrically connected with the photovoltaic panel 21; underground assembly 3 includes transition pipe 31, scavenge pipe 32, light 33 and electrically conductive slide 34, and scavenge pipe 32 connects in transition pipe 31 one side, and both are linked together, and electrically conductive slide 34 one end is connected in transition pipe 31 top one side, and electrically conductive slide 34 top is connected in basement roof 4 bottom, and light 33 sliding connection is in electrically conductive slide 34 bottom, and both electric connection.
More specifically, the bottom of the transition pipe 31 is provided with a funnel bottom slot 311, the bottom of the funnel bottom slot 311 is connected with a cap 312, the transition pipe 31 is communicated with the ground pipeline 14, when the transition pipe 31 receives the air flow transmitted from the ground pipeline 14, the air flow descends along the transition pipe 31 to flow, when the air flow reaches the position where the air exchange pipe 32 is communicated with the transition pipe 31, the air flow flows out through the air exchange pipe 32, meanwhile, some larger and heavier dust in the air flow continuously descends along the transition pipe 31 to sink into the funnel bottom slot 311 due to the inertia of the weight and the gravity, and the cap 312 is opened, so that the dust deposited for a long time can be conveniently cleaned.
More specifically, the ventilation pipe 32 includes an internal thread 321, a dust filter screen 322 and an external thread 323, the internal thread 321 is opened on the inner side of one end of the ventilation pipe 32, the dust filter screen 322 is embedded into one end of the ventilation pipe 32, the external thread 323 is opened on the outer side of the dust filter screen 322, the dust filter screen 322 is screwed into the inner side of one end of the ventilation pipe 32 through the external thread 323, so that the dust filter screen 322 is convenient to mount and dismount, when the air flow introduced through the transition pipe 31 passes through the ventilation pipe 32 and enters the basement, the small dust in the air flow is filtered in the ventilation pipe 32 by the dust filter screen 322, and then the dust filter screen 322 is taken out, so that the dust filtered in the ventilation pipe 32.
More specifically, a top clamping plate 331 is connected to the top of the illuminating lamp 33, side plates 332 are connected to two sides of the top clamping plate 331, a T-shaped sliding block 333 is connected to one side of each side plate 332, a threaded through hole 337 is formed through the middle of each T-shaped sliding block 333 and the side plate 332, a screw 334 is embedded in the threaded through hole 337 and penetrates through the threaded through hole 337, an insulating handle 335 is arranged at one end of each screw 334, a limiting ring 336 is arranged at the other end of each screw 334, a lead of the illuminating lamp 33 is connected to the other end of each screw 334, the illuminating lamp 33 is embedded in a T-shaped sliding slot 341 formed in two sides of the conductive sliding plate 34 through the T-shaped sliding block 333 to push the illuminating lamp 33 to slide at the bottom of the electric sliding plate 34, when the illuminating lamp 33 slides to a proper position, the screw 334 is rotated by screwing the insulating handle 335, the screw is tightly attached to the surface of a metal sheet 342 in the T-, the position of the illuminating lamp 33 can be conveniently adjusted, and the illuminating lamp 33 is pushed to a proper position to be illuminated.
More specifically, T-shaped chutes 341 are formed on both sides of the conductive sliding plate 34, metal sheets 342 are connected to the inner sides of the T-shaped chutes 341, and the metal sheets 342 are connected to the power supply of the battery 25 through wires and are connected in series with an on-off switch.
The working principle of the building energy-saving illumination ventilation equipment is as follows: the photovoltaic module 2 is well installed on the top of the ventilation box 1 by a user, because the photovoltaic panel 21 is installed around, sunlight in different time periods can be effectively absorbed, when the photovoltaic panel 21 absorbs the sunlight and converts the sunlight into electric energy, the electric energy is converted into alternating current by the inverter 24 and then is input into the storage battery 25 for storage, then the storage battery 25 is controlled by the controller 23 to avoid overcharge or overdischarge, when the photovoltaic panel 21 absorbs the sunlight and converts the electric energy into the electric energy, the inverter 24, the controller 23 and the storage battery 25 which run are radiated by the radiating holes 15, the ventilation fan 12 is connected with the power supply of the storage battery 25, then the ventilation fan 12 is started, external air is sent into the transition pipe 31 by the ventilation fan 12 through the grounding pipe 14, meanwhile, impurities in the air flow extracted by the ventilation fan 12 are filtered out by the filter screen cover 121, when the transition pipe 31 receives the air flow transmitted by, flows out through the ventilation pipe 32, meanwhile, some larger and heavier dust in the air flow continuously descends along the transition pipe 31 to sink into the funnel bottom groove 311 due to the inertia of weight and gravity, the cap 312 is opened to conveniently clean the dust deposited for a long time, when the air flow guided through the transition pipe 31 passes through the ventilation pipe 32 to enter the basement, the smaller dust in the air flow is filtered in the ventilation pipe 32 by the dust filter screen 322, then the dust filter screen 322 is taken out to conveniently clean the dust filtered in the ventilation pipe 32, when the basement needs to be illuminated, the illuminating lamp 33 is pushed to slide at the bottom of the electric sliding plate 34, when the basement needs to be illuminated, the screw 334 is rotated by screwing the insulating handle 335, the screw is tightly attached to the surface of the metal sheet 342 in the T-shaped chute 341 through the threaded through hole 337, then the power supply communicated with the metal sheet 342 is switched on, the illuminating lamp 33 is lighted, and when the power supply is switched off by the metal sheet 342, the illuminating lamp 33 is pushed to slide at the, the position of the illuminating lamp 33 can be conveniently adjusted, and the illuminating lamp 33 is pushed to a proper position to be illuminated.
In conclusion; compared with the prior lighting and ventilating equipment, the energy-saving lighting and ventilating equipment for the building can save electric energy; moreover, dust entering the basement and the ventilation pipeline can be intercepted, and the ventilation pipeline can be conveniently cleaned, so that the basement and the ventilation pipeline are cleaner; meanwhile, the illuminating lamp can be conveniently moved to an area needing illumination.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. The utility model provides a building energy saving illumination ventilation equipment, includes photovoltaic module (2) and basement roof (4), its characterized in that: the ventilating box (1) is installed at the top of the basement top plate (4), the photovoltaic module (2) is installed at the top of the ventilating box (1), the underground module (3) is connected to the bottom of the basement top plate (4), and the photovoltaic module (2) is electrically connected with the ventilating box (1) and the underground module (3); the ventilation box (1) comprises a support frame (11), an air exchange fan (12), an iron blocking door (13), a grounding pipeline (14) and radiating holes (15), wherein the support frame (11) is installed inside the ventilation box (1), the air exchange fan (12) is connected to the top of the support frame (11), the iron blocking door (13) is hinged to one side of the ventilation box (1), one end of the grounding pipeline (14) is connected to the back of the air exchange fan (12), the other end of the grounding pipeline (14) penetrates through the support frame (11) and the ventilation box (1) to enter the underground and communicated underground assembly (3), the radiating holes (15) are formed in the top of the ventilation box (1), and a filtering screen (121) is installed on one side of the air exchange; the photovoltaic module (2) comprises a photovoltaic panel (21), a protective cover (22), a controller (23), an inverter (24) and a storage battery (25), the photovoltaic panel (21) is installed outside the protective cover (22), the controller (23), the inverter (24) and the storage battery (25) are installed inside the protective cover (22), the controller (23), the inverter (24) and the storage battery (25) are electrically connected, and meanwhile, the controller (23), the inverter (24) and the storage battery (25) are electrically connected with the photovoltaic panel (21); underground assembly (3) is including transition pipe (31), scavenge pipe (32), light (33) and electrically conductive slide (34), scavenge pipe (32) connect in transition pipe (31) one side, and both are linked together, electrically conductive slide (34) one end is connected in transition pipe (31) top one side, and electrically conductive slide (34) top is connected in basement roof (4) bottom, light (33) sliding connection is in electric slide (34) bottom, and both electric connection.
2. The building energy-saving lighting ventilation device as claimed in claim 1, wherein: the bottom of the transition pipe (31) is provided with a funnel bottom groove (311), and the bottom of the funnel bottom groove (311) is connected with a cap (312).
3. The building energy-saving lighting ventilation device as claimed in claim 1, wherein: the ventilation pipe (32) comprises an internal thread (321), a dust filter screen (322) and an external thread (323), the internal thread (321) is arranged on the inner side of one end of the ventilation pipe (32), the dust filter screen (322) is embedded into one end of the ventilation pipe (32), and the external thread (323) is arranged on the outer side of the dust filter screen (322).
4. The building energy-saving lighting ventilation device as claimed in claim 1, wherein: the illuminating lamp is characterized in that a top clamping plate (331) is connected to the top of the illuminating lamp (33), side plates (332) are connected to two sides of the top clamping plate (331), a T-shaped sliding block (333) is connected to one side of each side plate (332), threaded through holes (337) are formed in the middle of the T-shaped sliding block (333) and the middle of each side plate (332), screw rods (334) are embedded into the threaded through holes (337), the screw rods (334) penetrate through the threaded through holes (337), an insulating handle (335) is arranged at one end of each screw rod (334), and a limiting ring (336) is arranged.
5. The building energy-saving lighting ventilation device as claimed in claim 1, wherein: t-shaped sliding grooves (341) are formed in two sides of the conductive sliding plate (34), and metal sheets (342) are connected to the inner sides of the T-shaped sliding grooves (341).
CN202020855836.0U 2020-05-21 2020-05-21 Building energy-saving lighting and ventilating equipment Expired - Fee Related CN212108874U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020855836.0U CN212108874U (en) 2020-05-21 2020-05-21 Building energy-saving lighting and ventilating equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020855836.0U CN212108874U (en) 2020-05-21 2020-05-21 Building energy-saving lighting and ventilating equipment

Publications (1)

Publication Number Publication Date
CN212108874U true CN212108874U (en) 2020-12-08

Family

ID=73622613

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020855836.0U Expired - Fee Related CN212108874U (en) 2020-05-21 2020-05-21 Building energy-saving lighting and ventilating equipment

Country Status (1)

Country Link
CN (1) CN212108874U (en)

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