CN106801557B - A kind of movable type ladder top skylight and its door leaf mechanism - Google Patents
A kind of movable type ladder top skylight and its door leaf mechanism Download PDFInfo
- Publication number
- CN106801557B CN106801557B CN201710090655.6A CN201710090655A CN106801557B CN 106801557 B CN106801557 B CN 106801557B CN 201710090655 A CN201710090655 A CN 201710090655A CN 106801557 B CN106801557 B CN 106801557B
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- China
- Prior art keywords
- door leaf
- fence
- central shaft
- skylight
- stair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 229920003266 Leaf® Polymers 0.000 claims description 161
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000030214 innervation Effects 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/71—Power-operated mechanisms for wings with automatic actuation responsive to temperature changes, rain, wind or noise
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/03—Sky-lights; Domes; Ventilating sky-lights
- E04D13/035—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts
- E04D13/0358—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts moving, in their own plane, e.g. rolling or sliding, or moving in parallel planes with or without an additional movement, e.g. both pivoting and rolling or sliding
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/70—Power-operated mechanisms for wings with automatic actuation
- E05F15/73—Power-operated mechanisms for wings with automatic actuation responsive to movement or presence of persons or objects
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention discloses a kind of portable ladder top skylight and its door leaf mechanism, including be vertically arranged central shaft (7), be rotatably installed on by rotation axis (8) central shaft (7) the first door leaf (9), the second door leaf (10) and with relatively-stationary 3rd door leaf (11) of the central shaft (7)；First door leaf (9), the second door leaf (10) and the 3rd door leaf (11) are triangular in shape and be in different planes in the axial direction.The skylight and door leaf mechanism will not take the area of arrangement photovoltaic module, the daylighting of photovoltaic module and interior of building not influenced, moreover, under unmanned state, it is easy to accomplish opening and closing automatically at the top of stair.
Description
Technical field
It is set particularly at the top of the stair towards roof photovoltaic power station the present invention relates to ladder top skylight technical field
Skylight.
Background technology
Photovoltaic roof is to utilize the photovoltaic module (solar cell) installed in top of building to convert light energy into electric energy
Electric power system.Since photovoltaic module is located at outside building, for installation, the consideration of practical application such as safeguard, in building
Portion would generally be equipped with the stair towards outer top, to facilitate staff to pass in and out photovoltaic place, in order to make full use of building
The area at top, it is not recommended that using traditional top room form, the face of arrangement photovoltaic module can be taken by the one hand pushing up room at stair top
Product, the daylighting of photovoltaic module and interior of building can be influenced by the other hand pushing up room, moreover, under unmanned state, it is difficult to realize building
Ladder top portion opens and closes automatically, even if building top room using transparent glass, can not solve these technologies well and ask
Topic is, it is necessary to design a kind of brand-new stair top mechanism.
The content of the invention
The object of the present invention is to provide a kind of door leaf mechanism.The mechanism will not take the area of arrangement photovoltaic module, not shadow
The daylighting of photovoltaic module and interior of building is rung, moreover, under unmanned state, it is easy to accomplish automatic opening and pass at the top of stair
Close.
It is a further object of the present invention to provide a kind of portable ladder top skylight equipped with the door leaf mechanism.
To achieve the above object, the present invention provides a kind of door leaf mechanism, including be vertically arranged central shaft, pass through rotation axis
It is rotatably installed on the first door leaf of the central shaft, the second door leaf and the 3rd relatively-stationary with the central shaft
Fan；First door leaf, the second door leaf and the 3rd door leaf are triangular in shape and be in different planes in the axial direction.
Preferably, light sensor is further comprised, the light sensor connects controller, and the controller connection is driven
Move the motor of the rotation axis；
And/or further comprising humidity sensor, the humidity sensor connects controller, and the controller connection is driven
Move the motor of the rotation axis.
Preferably, operation button is further comprised, the operation button connects controller respectively, and the controller connection is driven
The motor of the rotation axis is moved, to control first door leaf and the second door leaf manually respectively.
Preferably, there is full open state, under full open state, first door leaf and the second door leaf turn to described
Above 3rd door leaf, three door leafs overlap.
Preferably, there is semi-open state, under semi-open state, together with first door leaf is overlapping with the second door leaf,
It is and not overlapping with the 3rd door leaf.
Preferably, second door leaf is presented axially between first door leaf and the 3rd door leaf, described first
The area of fan is more than the area of second door leaf, and the area of second door leaf is more than the area of the 3rd door leaf, complete
In the state of full expansion, there is repeated overlapping surplus between three door leafs.
To realize above-mentioned another object, the present invention provides a kind of portable ladder top skylight, including is arranged at the top of stair
Fence and the door leaf mechanism above the fence；The door leaf mechanism is the door leaf mechanism described in any of the above-described.
Preferably, the fence is " U "-shaped, and three of them side is respectively the first fence, the second fence and the 3rd fence, institute
It is entrance to state the side that " u "-shaped fence opens wide, and the entrance bottom is equipped with the floor being connected with stair；The door leaf mechanism
Central shaft be located at the centre position of the fence；Rectangular skylight opening at the top of the stair is diagonally divided into four three
Angular domain, first door leaf, the second door leaf and the 3rd door leaf are respectively used to covering wherein three delta-shaped regions, describedly
Plate covers the 4th delta-shaped region.
Preferably, the stair of the fence entrance are equipped with diagonally adjacent between the central shaft on one side
Door mechanism.
Preferably, the non-stair of the fence entrance are equipped with diagonally adjacent between the central shaft on one side
The 4th fence.
Door leaf mechanism provided by the invention be used for from masking stair at the top of skylight, its first door leaf, the second door leaf and
3rd door leaf is respectively used to three delta-shaped regions that covering rectangular skylight opening diagonally divides, its first door leaf and second
Door leaf can be rotated, therefore can have different states, if weather condition allows, such as when weather is fine, the first door leaf
Can be overlapping with the 3rd door leaf with the second door leaf, not to being blocked at the top of skylight, the de-occlusion region at the top of skylight is become larger, just
Come in and go out in staff, if weather condition does not allow, for example sleety weather, the first door leaf and the second door leaf can be at being fully deployed
State, so as to avoid sleet from entering building from top to being blocked at the top of skylight in the axial direction together with the 3rd door leaf and floor
Ladder, it will not take the area of arrangement photovoltaic module, the daylighting of photovoltaic module and interior of building not influenced, moreover, by adding
Sensor and controller are filled, is easy to realize opening and closing automatically for skylight under unmanned state.
In a kind of preferred solution, the area of first door leaf is more than the area of second door leaf, described second
The area of fan is more than the area of the 3rd door leaf, has in the state of being fully deployed, between three door leafs and repeats to hand over
Pitch surplus.Since first door leaf, the second door leaf and the 3rd door leaf are in different planes in the axial direction, pass through repetition
Occlusion effect can farthest be lifted by intersecting surplus, effectively prevent sleet from entering corridor from skylight.
Movable type ladder top skylight provided by the present invention is equipped with the door leaf mechanism, since the door leaf mechanism is with above-mentioned
Technique effect, the portable ladder top skylight equipped with the door leaf mechanism should also have corresponding technique effect.
Brief description of the drawings
Fig. 1 is a kind of structure diagram of portable ladder top skylight disclosed by the embodiments of the present invention；
Fig. 2 is the structure diagram of door leaf mechanism shown in Fig. 1.
In figure：
1. 2. second 6. floor of the 3rd fence 4. entrance, 5. stair of fence 3. of the first fence, 7. central shaft 8. revolves
9. first 10. second the 3rd the 4th fence of door leaf 12. of door leaf 11. of door leaf of shaft, 13. photovoltaic module
Embodiment
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the accompanying drawings to the specific of the present invention
Embodiment is described in further detail.
Herein, the term such as " upper and lower, left and right " is the establishment based on position relationship shown in the drawings, with reference to the accompanying drawings
Difference, corresponding position relationship is also possible to change therewith, therefore, can not be understood as to the exhausted of protection domain
To limiting；Moreover, the relational terms of such as " first " and " second " or the like are used merely to one with another with identical
The component of title distinguishes, without necessarily requiring or implying between these components there are any this actual relation or
Sequentially.
Please refer to Fig.1, Fig. 2, Fig. 1 is a kind of structure diagram of portable ladder top skylight disclosed by the embodiments of the present invention；
Fig. 2 is the structure diagram of door leaf mechanism shown in Fig. 1.
As shown in the figure, movable type ladder top skylight provided in this embodiment, including be arranged on " u "-shaped fence at the top of stair and
Door leaf mechanism above " u "-shaped fence, three sides of " u "-shaped fence are respectively the first fence 1, the second fence 2 and
Three fences 3, the side that " u "-shaped fence opens wide are entrance 4, and 4 bottom of entrance is equipped with the floor 6 being connected with stair 5.
Door leaf mechanism includes being vertically arranged and is located at the central shaft 7 in " u "-shaped fence centre position, can be turned by rotation axis 8
Be installed on dynamicly the first door leaf 9 of central shaft 7, the second door leaf 10 and with relatively-stationary 3rd door leaf 11 of central shaft 7.
Rectangular skylight opening at the top of stair is diagonally divided into four delta-shaped regions, the first door leaf 9, the second door leaf
10 and the 3rd door leaf 11 be from top to bottom sequentially arranged, in the axial direction in different planes, in isosceles triangle, be respectively used to
Covering wherein three delta-shaped regions, the 4th delta-shaped region of the covering of the floor 6 rectangular skylight opening of entrance 4, first
Door leaf 9, the second door leaf 10, the 3rd door leaf 11 and floor 6 realize together to rectangular skylight opening in the vertical comprehensively cover
Lid.
First door leaf 9 and the second door leaf 10 are moveable structure, and move angle is this homalographic counterclockwise；3rd
Fan 11 is stationary structure, and the frame of three door leafs is welded by the hollow steel pipe of square, light weight, centre tempering
Glass capping, screening effect and translucency are good, composition full-automatic rotary door leaf mechanism, the first fence 1, the second fence 2 and the
Three fences 3 are also made of steel rim and the tempered glass in frame.
Skylight is equipped with light sensor, and the first door leaf 9 and the second door leaf 10 are driven by motor, light sensor connection control
Device, the motor of controller connection driving rotation axis, to drive the first door leaf 9 and the second door leaf 10 to rotate, makes skylight have certainly
Dynamic switching function, can be with light intensity automatic switch, and at night during insufficient light, skylight is voluntarily closed, when morning is bright and clear,
Skylight is opened；Without human intervention, it is time saving and energy saving, energy conservation and environmental protection.
Skylight is equipped with humidity sensor, humidity sensor connection controller, and controller connection drives the motor of rotation axis,
To drive the first door leaf 9 and the second door leaf 10 to rotate, make skylight that there is weather to meet an urgent need inducing function, can be realized with weather conditions
Automatically turn on, in sleety weather, humidity reaches a certain level, and skylight can be closed voluntarily, and when becoming a fine day, skylight is reduced certainly with humidity
Innervation should open, and without human intervention, saving of work and time, can save human resources, realize emergency function.
Certainly, the first door leaf 9 and the second door leaf 10 are also respectively equipped with operation button, its operation button connects control respectively
Device, the motor of controller connection driving rotation axis, to control 9 and second door leaf 10 of the first door leaf to be revolved manually respectively
Turn.
First door leaf 9 and the second door leaf 10 have it is rational open scope, can be with needing to open.When needed, the first door leaf 9
The top of the 3rd door leaf 11 is movable to the second door leaf 10, three door leafs can overlap completely or partially, 9 He of the first door leaf
The migration area of second door leaf 10 can be suitable with its own area.When full open, the 3rd door leaf 11 is fixed, 9 He of the first door leaf
Second door leaf 10 is moved to the top of the 3rd door leaf 11, and such three door leafs 11 overlap；When semi-open, first
Fan 9 overlaps with the second door leaf 10, without overlapping with the 3rd door leaf 11.
Second door leaf 10 is presented axially between the first door leaf 9 and the 3rd door leaf 11, and the area of the first door leaf 9 is more than
The area of second door leaf 10, the area of the second door leaf 10 are more than the area of the 3rd door leaf 11, and door leaf area is sequentially increased, complete
In the state of expansion, there is repeated overlapping surplus between three door leafs, screening can farthest be lifted by repeated overlapping surplus
Effect is kept off, effectively prevents sleet from entering corridor from skylight.
In order to improve security protection performance, the non-stair of " u "-shaped fence entrance 4 can install additional between central shaft 7 on one side
4th fence 12, the 4th fence 12 are in the diagonally adjacent of rectangular skylight opening, to prevent personnel from entering stair from there
Airway region produce it is dangerous.
In addition, the stair of " u "-shaped fence entrance 4 can further install openable door machine additional between central shaft 7 on one side
Structure (not shown), door mechanism is in the another diagonally adjacent of rectangular skylight opening, to prevent non-working person from entering
Arrange the roof of photovoltaic module 13.
Above-described embodiment is only the preferred solution of the present invention, is specifically not limited thereto, on this basis can be according to reality
Need to make with targetedly adjusting, so as to obtain different embodiments.For example, can be to the first door leaf 9, the second door leaf
10 and the 3rd door leaf 11 circumferential direction or relative axial position adjust；Alternatively, the first door leaf 9, the second door leaf 10 and the 3rd
Fan 11 is designed to other shapes, etc..Since mode in the cards is more, just no longer illustrate one by one here.
The present invention builds the first of the skylight at the top of stair, wherein " u "-shaped fence by " u "-shaped fence and door leaf mechanism
Fence 1, the second fence 2 and the 3rd fence 3 form three sides of skylight, and the open side of " u "-shaped fence forms going out for skylight
Entrance 4, the floor 6 of 4 bottom of entrance are connected with stair 5, and staff can climb up building after coming from stair through thus entrance
Top, the first door leaf 9, the second door leaf 10 and the 3rd door leaf 11 of door leaf mechanism are respectively used to covering rectangular skylight opening diagonally
Three delta-shaped regions of line division, its 9 and second door leaf 10 of the first door leaf can be rotated, therefore can have different shapes
State, if weather condition allows, for example when weather is fine, the first door leaf 9 and the second door leaf 10 can be overlapping with the 3rd door leaf 11, not right
Blocked at the top of " u "-shaped fence, the de-occlusion region at the top of U " shape fences is become larger, come in and gone out easy to staff, if weather
Condition does not allow, such as sleety weather, and the first door leaf 9 and the second door leaf 10 can be at its fully unfolded position, thus with the 3rd
" u "-shaped fence top is together in the axial direction blocked in fan 11 and floor 6, avoids sleet from entering " u "-shaped fence from top, its
The area of arrangement photovoltaic module 13 will not be taken, the daylighting of photovoltaic module 13 and interior of building is not influenced, moreover, passing through installation
Sensor and controller, are easy to realize opening and closing automatically for skylight under unmanned state.
Portable ladder top skylight provided by the present invention and its door leaf mechanism are described in detail above.Herein should
The principle of the present invention and embodiment are set forth with specific case, the explanation of above example is only intended to help to manage
Solve the core concept of the present invention.It should be pointed out that for those skilled in the art, original of the invention is not being departed from
On the premise of reason, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into right of the present invention and wants
In the protection domain asked.
Claims (10)
- A kind of 1. door leaf mechanism, it is characterised in that including be vertically arranged central shaft (7), rotationally pacified by rotation axis (8) The first door leaf (9), the second door leaf (10) loaded on the central shaft (7) and with the central shaft (7) the relatively-stationary 3rd Door leaf (11)；First door leaf (9), the second door leaf (10) and the 3rd door leaf (11) are triangular in shape and in the axial direction in not Same plane.
- 2. door leaf mechanism according to claim 1, it is characterised in that further comprise light sensor, the light passes Sensor connects controller, and the controller connection drives the motor of the rotation axis；And/or further comprising humidity sensor, the humidity sensor connects controller, the controller connection driving institute State the motor of rotation axis.
- 3. door leaf mechanism according to claim 2, it is characterised in that further comprise operation button, the operation button Controller is connected respectively, and the controller connection drives the motor of the rotation axis, to control described first manually respectively Fan (9) and the second door leaf (10).
- 4. door leaf mechanism according to claim 1, it is characterised in that there is full open state, under full open state, institute State the first door leaf (9) and the second door leaf (10) is turned to above the 3rd door leaf (11), three door leafs overlap.
- 5. door leaf mechanism according to claim 1, it is characterised in that there is semi-open state, under semi-open state, institute State the first door leaf (9) it is overlapping with the second door leaf (10) together with, it is and not overlapping with the 3rd door leaf (11).
- 6. door leaf mechanism according to claim 1, it is characterised in that second door leaf (10) is presented axially in described Between first door leaf (9) and the 3rd door leaf (11), the area of first door leaf (9) is more than the face of second door leaf (10) Product, the area of second door leaf (10) is more than the area of the 3rd door leaf (11), in the state of being fully deployed, three institutes Stating between door leaf has repeated overlapping surplus.
- 7. a kind of movable type ladder top skylight, it is characterised in that including the fence being arranged at the top of stair and on the fence The door leaf mechanism of side；The door leaf mechanism is any one of them door leaf of the claims 1 to 6 mechanism.
- 8. movable type ladder top skylight according to claim 7, it is characterised in that the fence is " U "-shaped, three of them side Respectively the first fence (1), the second fence (2) and the 3rd fence (3), the side that the " u "-shaped fence opens wide are entrance (4), entrance (4) bottom is equipped with the floor (6) being connected with stair (5)；The central shaft (7) of the door leaf mechanism is located at institute State the centre position of fence；Rectangular skylight opening at the top of the stair is diagonally divided into four delta-shaped regions, described First door leaf (9), the second door leaf (10) and the 3rd door leaf (11) are respectively used to covering wherein three delta-shaped regions, the floor (6) the 4th delta-shaped region is covered.
- 9. movable type ladder top skylight according to claim 8, it is characterised in that the stair one of the fence entrance (4) It is equipped between side and the central shaft (7) and is in diagonally adjacent door mechanism.
- 10. movable type ladder top skylight according to claim 8, it is characterised in that the non-stair of the fence entrance (4) The 4th diagonally adjacent fence (12) is in while being equipped between the central shaft (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710090655.6A CN106801557B (en) | 2017-02-20 | 2017-02-20 | A kind of movable type ladder top skylight and its door leaf mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710090655.6A CN106801557B (en) | 2017-02-20 | 2017-02-20 | A kind of movable type ladder top skylight and its door leaf mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106801557A CN106801557A (en) | 2017-06-06 |
| CN106801557B true CN106801557B (en) | 2018-04-24 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710090655.6A Expired - Fee Related CN106801557B (en) | 2017-02-20 | 2017-02-20 | A kind of movable type ladder top skylight and its door leaf mechanism |
Country Status (1)
| Country | Link |
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| CN (1) | CN106801557B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111997201A (en) * | 2020-08-24 | 2020-11-27 | 广东东方广厦模块化建筑有限公司 | Intelligent packaging type box room |
| CN114033269B (en) * | 2021-12-01 | 2024-07-16 | 山西省机电设计研究院有限公司 | Electric window |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102400523A (en) * | 2011-07-28 | 2012-04-04 | 皇明洁能控股有限公司 | Solar roof system |
| JP5081098B2 (en) * | 2008-08-11 | 2012-11-21 | 旭化成ホームズ株式会社 | Roof structure |
| CN104120817A (en) * | 2014-07-30 | 2014-10-29 | 徐庆宏 | Modularized solar photovoltaic roof |
| CN105386615A (en) * | 2015-12-09 | 2016-03-09 | 黄树长 | Design structure of roof staircase and top floor door |
| CN205617674U (en) * | 2016-04-01 | 2016-10-05 | 山东三玉窗业有限公司 | Ladder skylight of mil slope |
| CN106149991A (en) * | 2016-08-25 | 2016-11-23 | 优利康达（天津）科技有限公司 | Tilting type wind-power engine room skylight |
-
2017
- 2017-02-20 CN CN201710090655.6A patent/CN106801557B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5081098B2 (en) * | 2008-08-11 | 2012-11-21 | 旭化成ホームズ株式会社 | Roof structure |
| CN102400523A (en) * | 2011-07-28 | 2012-04-04 | 皇明洁能控股有限公司 | Solar roof system |
| CN104120817A (en) * | 2014-07-30 | 2014-10-29 | 徐庆宏 | Modularized solar photovoltaic roof |
| CN105386615A (en) * | 2015-12-09 | 2016-03-09 | 黄树长 | Design structure of roof staircase and top floor door |
| CN205617674U (en) * | 2016-04-01 | 2016-10-05 | 山东三玉窗业有限公司 | Ladder skylight of mil slope |
| CN106149991A (en) * | 2016-08-25 | 2016-11-23 | 优利康达（天津）科技有限公司 | Tilting type wind-power engine room skylight |
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| CN106801557A (en) | 2017-06-06 |
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