CN107524322B

CN107524322B - Viewing platform with windshield

Info

Publication number: CN107524322B
Application number: CN201710903612.5A
Authority: CN
Inventors: 应晓芸; 廖保秀
Original assignee: Quzhou Creative Industrial Design Co ltd
Current assignee: Quzhou Creative Industrial Design Co ltd
Priority date: 2017-09-29
Filing date: 2017-09-29
Publication date: 2020-08-04
Anticipated expiration: 2037-09-29
Also published as: CN107524322A

Abstract

The invention relates to a viewing platform. The utility model provides a establish windshield's viewing platform, includes the base, be equipped with the mesa on the base and be located the lift chair at mesa rear, mesa below is equipped with the footboard of liftable and is articulated to have the electric fan heater of blowing to the people who sits on the lift chair, it has both to stand and keep off the windshield on lift chair the place ahead and can put the mesa flatly to articulate on the rear side of mesa. The invention provides a viewing platform with a windshield, which has good riding comfort and solves the problem of poor comfort of the existing viewing platform.

Description

Viewing platform with windshield

Technical Field

The invention relates to a viewing platform, in particular to a viewing platform with a windshield.

Background

When outdoor activities such as fireworks meet are carried out, a viewing platform is arranged for guests to sit and watch. The existing viewing platform is a simple chair and a table which can not be lifted and can not meet the requirements of guests at different heights, if head-on wind is generated, the eyes of the guests can not be opened and the guests can not be watched, and the guests can be watched, especially when the guests watch fireworks, smoke in the wind can affect the health of the guests; the existing viewing platform has the defect of poor comfort.

Disclosure of Invention

The invention provides a viewing platform with a windshield, which has good riding comfort and solves the problem of poor comfort of the existing viewing platform.

The technical problem is solved by the following technical scheme: the utility model provides a establish windshield's viewing platform, includes the base, be equipped with the mesa on the base and be located the lift chair at mesa rear, mesa below is equipped with the footboard of liftable and is articulated to have the electric fan heater of blowing to the people who sits on the lift chair, it has both to stand and keep off the windshield on lift chair the place ahead and can put the mesa flatly to articulate on the rear side of mesa. In the technical scheme, the lifting chair is used for replacing the existing chair which cannot be lifted, so that the height of the chair can be adjusted; set up the running-board and can improve the travelling comfort when taking, running-board height-adjustable moreover, make the user carry out the bracket with the height of needs, the travelling comfort further promotes. The warm air blower is arranged, so that when the ambient temperature is low, blowing and heating can be performed to improve the comfort; the windshield is arranged, so that the comfort can be improved by shielding the wind when the windward side exists. The windshield is hinged and can be put down when the windshield is not needed.

Preferably, be equipped with glass portion through-hole on the windshield, glass portion through-hole in-connection has the filter, the filter includes the casing and is located two grid plates of casing, two grid plates will the casing is cut apart into inner air cavity, active carbon and is deposited chamber and outer end air cavity, the inner air cavity is equipped with inner gas pocket, the active carbon is deposited the intracavity and is filled there is active carbon, the outer end air cavity is equipped with the outer end gas pocket, the outer end gas pocket is equipped with the diaphragm, the inner gas pocket is located the one end of filter orientation lift chair, the inner gas pocket is in the same place with the butt joint of the one end of flexible intake pipe, and the other end of flexible intake pipe is equipped with the bandage, be equipped with on the mesa and hold when windshield is flat to. When the air quality is poor, particularly when the fireworks are watched to generate windward, the air inlet pipe is fixed with the head of a user through the binding belt, so that the mouth is aligned with the air inlet pipe. The air is filtered by the activated carbon in the filter and then is inhaled by the guest, so that the guest is protected. This filter sets up the support column and supports the grid plate to make the grid plate be difficult to produce the deformation. The outer end air hole is provided with the membrane for filtering, so that the air entering the active carbon is cleaner, and the function of delaying the contamination of the active carbon is achieved.

Preferably, the outer end air hole is a round hole, the shell is provided with an annular sliding groove extending along the circumferential direction of the outer end air hole, a sliding head is connected in the annular sliding groove in a sliding mode, and the sliding head is connected with a cleaning sheet horizontally arranged on the diaphragm. When the dust on the membrane is more, the sliding head slides in the sliding groove to drive the cleaning sheet to rotate on the membrane, so that the dust on the membrane is scraped off, and the membrane is cleaned. The membrane is convenient to clean.

Preferably, the length of the cleaning sheet is greater than or equal to the radius of the outer end air holes. The cleaned area is large.

Preferably, the inner end air cavity comprises a sixth air distribution cavity, a first air distribution cavity and a second air distribution cavity, the inner end air hole is arranged on the sixth air distribution cavity, the first air distribution cavity is provided with a first communicating hole communicated with the sixth air distribution cavity, the second air distribution cavity is provided with a second communicating air hole communicated with the sixth air distribution cavity, the outer end air cavity comprises a third air distribution cavity, a fourth air distribution cavity and a fifth air distribution cavity, the outer end air hole comprises a fifth air distribution cavity, the third air distribution cavity is provided with a third communicating air hole communicated with the fifth air distribution cavity, the fourth air distribution cavity is provided with a fourth communicating air hole communicated with the fifth air distribution cavity, all the communicating air holes are covered with diaphragms, the diaphragms on the first communicating holes can only be opened towards the inner part of the sixth air distribution cavity, and the diaphragms on the second communicating air cavity can only be opened towards the inner part of the second air distribution cavity, the diaphragm on the third communicating air hole can only be opened towards the inside of the third air distribution cavity, the diaphragm on the fourth communicating air hole can only be opened towards the outside of the fourth air distribution cavity, the shell is further rotatably connected with a cylinder, the two grid plates form two bottom walls of the cylinder, the inner space of the cylinder forms the activated carbon storage cavity, a partition plate is arranged inside the cylinder, and the activated carbon storage cavity is divided into a first storage cavity and a second storage cavity by the partition plate; the first branch storage cavity and the second branch storage cavity are communicated, one is only communicated with the first gas distribution cavity and the third gas distribution cavity, and the other is only communicated with the second gas distribution cavity and the fourth gas distribution cavity; the shell is provided with an avoiding groove, and the peripheral surface of the cylinder is provided with a rotating handle extending out of the shell through the avoiding groove. This technical scheme's working process does, gaseous activated carbon (following activated carbon who plays filtering action) through in the branch storage chamber with first gas distribution chamber and third gas distribution chamber butt joint is filtered the back and is inhaled by the user, the gas of user exhalation is through in the activated carbon (following activated carbon by clear) in the branch storage chamber with second gas distribution chamber and fourth gas distribution chamber butt joint, the realization is blowbacked to this activated carbon, the expired gas does not contain the particulate matter, can play the effect of mediation activated carbon. When the activated carbon with the filtering function is blocked to influence the smoothness of breathing, the barrel is rotated to switch the positions of the two storage cavities, and the switched activated carbon with the filtering function becomes the cleaned activated carbon (namely, the exhaled gas is utilized to carry out on-site on-line cleaning), and the cleaned activated carbon becomes the activated carbon with the filtering function to realize the cleaning of the inhaled gas. This technical scheme can not leave (promptly do not take off) the filter under the condition change active carbon at the mouth, and the material under the change can utilize the gas of exhalation to clean to next time reuse and play increase of service life's effect.

Preferably, the central angle corresponding to the avoiding groove is 180 degrees, when the rotary handle is abutted to one end of the avoiding groove, the first gas distribution cavity and the third gas distribution cavity are communicated only through the first branch storage cavity, the second gas distribution cavity and the fourth gas distribution cavity are communicated only through the second branch storage cavity, when the rotary handle is abutted to the other end of the avoiding groove, the first gas distribution cavity and the third gas distribution cavity are communicated only through the second branch storage cavity, and the second gas distribution cavity and the fourth gas distribution cavity are communicated only through the first branch storage cavity. The two storage cavities can be conveniently and accurately replaced.

Preferably, the diaphragm is provided with a connecting pin at the center, the thickness of the diaphragm gradually decreases from the center to the periphery, and the diaphragm abuts against the end face of the communication air hole through the periphery to seal the communication air hole. The reliability when opening the diaphragm is good.

Preferably, both side surfaces of the diaphragm are convex. The reliability of the diaphragm when it is opened and closed can be further improved.

Preferably, the area of the membrane is larger than the opening area of the outer end air hole, a grid plate located on the inner side of the membrane is arranged in the outer end air hole, and the periphery of the membrane is connected with the grid plate. The membrane can be folded together to improve the filtering effect during suction. The filter pulp can open during expiration for the dust on the logical groove of air current outflow and the diaphragm of being convenient for drops.

The invention also comprises a cup stand which can be hung in the accommodating hole of the table surface part and the through hole of the glass part. When the windshield is horizontally arranged on the table board, the cup stand is hung in the through hole of the glass part, and when the windshield is erected, the cup stand is hung in the accommodating hole of the table board part. The cup holder has good convenience in use, and the convenience in storing the cup is not influenced no matter what state the windshield is in.

Preferably, the mesa portion accommodation hole is a through hole, and the step plate is located directly below the mesa portion accommodation hole. When the table top is cleaned, the garbage can be placed on the foot board, so that garbage can fall into the garbage can from the accommodating hole in the table top. The garbage can be aligned with the accommodating hole of the tabletop part at a required height without manually lifting the garbage can. The convenience is good when in use.

The invention has the following advantages: the comfort in use is good.

Drawings

Fig. 1 is a schematic diagram of a first embodiment of the invention.

Fig. 2 is an enlarged schematic view of a filter in the first embodiment.

Fig. 3 is a partially enlarged schematic view of fig. 2 at D.

Fig. 4 is a schematic view of a filter according to a second embodiment of the present invention.

Fig. 5 is a partially enlarged schematic view of a portion B of fig. 4.

Fig. 6 is a partially enlarged schematic view at C of fig. 4.

In the figure: the device comprises a shell 1, an outer end shell 1-1, an inner end shell 1-2, an inner end air cavity 11, an inner end air hole 111, a sixth air-dividing cavity 112, a first air-dividing cavity 113, a second air-dividing cavity 114, a first communicating air hole 115, a second communicating air hole 116, an activated carbon storage cavity 12, a first branch storage cavity 121, a second branch storage cavity 122, an outer end air cavity 13, an outer end air hole 131, a grid plate 1311, a membrane 1312, an annular sliding chute 1313, a sliding head 1314, a connecting handle 1315, a cleaning sheet 1316, a third air-dividing cavity 132, a fourth air-dividing cavity 133, a third communicating air hole 134, a fourth communicating air hole 135, a fifth air cavity 136, a supporting column 14, an avoiding groove 15, one end 151 of the avoiding groove, the other end 152 of the avoiding groove, an inner end vertical partition plate 16, a first transverse partition plate 17, a second transverse partition plate 18, a vertical partition plate 19, a cylinder 5-1, a cylinder cover 5-2, the air conditioner comprises a rotary handle 52, a partition plate 55, a jack 53, a bolt 54, a membrane 6, a connecting pin 61, a connecting frame 62, a base 9, a table board 91, a hinge shaft 911, a table board accommodating hole 912, a lifting chair 92, a pedal 93, a lifting mechanism 931, a warm air blower 94, a windshield 95, a glass through hole 951, a cup holder 96, a flanging 961, a filter 97, a flexible air inlet pipe 98 and a binding belt 981.

Detailed Description

The invention is further described with reference to the following figures and examples.

First embodiment, refer to fig. 1, 1. a viewing platform with windshield, comprising a base 9. The base 9 is provided with a table-board 91 and a lifting chair 92 positioned at the rear of the table-board. A foot board 93 and a warm air blower 94 are arranged below the table board 91. The footboard 93 is supported on the base 9 so as to be movable up and down by the elevating mechanism 931. The spherical surface of the warm air blower 94 is hinged below the table-board 91. The fan heater 94 is used for blowing air to warm a person sitting on the lift chair. A windshield 95 which can be erected to block the front of the lifting chair and can be flatly placed on the table top is hinged on the rear side of the table top 91 through a hinge shaft 911. The table 91 is also provided with a table portion accommodating hole 912. The mesa portion accommodating hole 912 is a through hole. The mesa-portion accommodating hole 912 is located directly above the footboard 93. The cup holder 96 is provided in the mesa portion accommodating hole 912. The cup holder 96 is provided with a flange 961. The cup holder 96 is suspended within the counter surface portion receiving aperture 912 by a flange 961 that hooks onto the counter surface. The windshield 95 is provided with a glass portion through hole 951. Filter 97 is connected within glass portion throughbore 951. The filter 97 protrudes beyond the windshield in a direction away from the lift chair. The filter 97 is provided with a flexible inlet duct 98 towards the end of the chair. The right end of the flexible inlet tube 98 remote from the filter 97 is provided with a strap 981.

Referring to fig. 2, the filter comprises a housing 1 and two grid plates 51 located within the housing.

The housing 1 is cylindrical, and the center line of the housing extends in the left-right direction in the drawing. The shell 1 is formed by connecting an outer end shell 1-1 and an inner end shell 1-2 together through tight balance. The two grid plates 51 divide the housing 1 into an inner end air chamber 11 (inner end means an end located inside the filter), an activated carbon storage chamber 12, and an outer end air chamber 13.

The inner end air chamber 11 is provided with an inner end air hole 111. The flexible air inlet pipe 98 is aligned with the inner end air hole 111, that is, the air output from the inner end air hole 111 is output through the flexible air inlet pipe 98. A plurality of support columns 14 are arranged in the inner end air cavity 11. Support posts 14 in the inner end air cavities 11 support the grid plates forming the ends of the inner end air cavities.

The outer end air chamber 13 is provided with an outer end air hole 131. A plurality of support columns 14 are also arranged in the outer end air cavity 13. The support columns 14 in the outer end air cavities 13 support the grid plates at the ends where the outer end air cavities are located.

The outer end air hole 131 is a circular hole. Inside the outer end air hole 131 are a grid plate 1311 and a membrane 1312. The membrane 1312 is only peripherally attached to the edges of the grid plate 1311. The membrane 1312 is located outside the grid plate 1311. The area of the membrane 1312 is larger than the opening area of the outer end air hole 131, and as shown in the figure, the size relationship enables the membrane 1312 to be unfolded during exhalation so as to facilitate dust falling; if air is sucked in, wrinkles can be generated to increase the filtering effect.

Referring to fig. 3, the outer end housing 1-1 is provided with an annular sliding groove 1313. An annular runner 1313 extends circumferentially along outer end gas bore 131. A sliding head 1314 is slidably coupled within the annular sliding channel 1313. The sliding head 1314 is coupled to a cleaning sheet 1316 by a stem 1315. The cleaning sheet 1316 is pressed flat against the membrane 1312. The annular runner 1313 is coaxial with the outer end gas port 131. The length of the cleaning sheet 1316 is greater than the radius of the outer end air holes 131.

Referring to fig. 1, 2 and 3, in use, activated carbon is filled in the activated carbon storage cavity 12. The filter is lowered by the lifter to the hood over the guest's head and the filter is aligned with the mouth through the air contaminated zone. The air flows through the membrane 1312, the outer end air cavity 131, the outer end air cavity 13, the activated carbon storage cavity 12, the inner end air cavity 11 and the inner end air cavity 111 in sequence, enters the filter 97, and is inhaled by the guest.

When dust is deposited on the membrane 1312 more, the connecting handle 1315 is held to slide the sliding head 1314 in the annular sliding groove 1313, so that the cleaning sheet 1316 is driven to rotate around the center of the outer end air hole 131 to scrape the surface of the membrane 1312 to remove dust.

Referring to FIG. 1, in use, if the windshield 95 is folded onto a countertop, the cup holder 96 is removed and the windshield is folded onto the countertop, the filter 97 is inserted into the countertop receiving hole 912, and the cup holder 96 is inserted into the glass portion throughbore 951 and suspended by the flange 961.

The second embodiment is different from the first embodiment in that:

referring to fig. 4, the housing 1 is provided with an escape groove 15. The escape groove 15 extends in the circumferential direction of the housing 1. The central angle corresponding to the avoiding groove 15 is 180 °, that is, the extending length of the avoiding groove 15 is half of the perimeter of the shell.

A cylinder 5 is also rotatably connected within the housing 1. The two bottom walls of the cylinder 5 are formed by two grid plates 51, in other words the two bottom walls of the cylinder 5 are perforated with filtering holes so as to form two grid plates. The cylinder 5 is formed by connecting a cylinder body 5-1 and a cylinder cover 5-2 together. The inner space of the cylinder 5 constitutes an activated carbon storage chamber 12. The interior of the cylinder 5 is provided with a partition 55. The partition 55 divides the activated carbon storage chamber 12 into a first storage chamber 121 and a second storage chamber 122 uniformly. A rotary handle 52 is provided on the outer peripheral surface of the cylinder 5. The turning handle 52 extends out of the housing 1 through the escape slot 15. The cylinder 5 is prevented from freely rotating and generating position movement by friction force between the cylinder 5 and the shell 1.

The inner end air chamber 11 is divided into a sixth sub-air chamber 112, a first sub-air chamber 113 and a second sub-air chamber 114 by an inner end vertical partition plate 16 and a first transverse partition plate 17. The inner end air hole 111 is provided on the sixth air-separating chamber 112. The first sub-air chamber 113 communicates with the sixth sub-air chamber 112 through the first communication hole 115. The second sub-air chamber 114 communicates with the sixth sub-air chamber 112 through a second communication air hole 116. The outer-end air chamber 13 is partitioned into a third air-dividing chamber 132, a fourth air-dividing chamber 133 and a fifth air-dividing chamber 136 by the second cross partition plate 18 and the outer-end vertical partition plate 19. The outer end air hole 131 is provided at the fifth air-dividing chamber 136. Is composed of a third communicating air hole 134 and a fourth communicating air hole 135. The third air distribution chamber 132 communicates with the fifth air distribution chamber 136 through the third communication air hole 134. The fourth air distribution chamber 133 communicates with the fifth air distribution chamber 136 through the fourth communication air hole 135.

The first communication hole 115, the second communication hole 116, the third communication hole 134 and the fourth communication hole 135 are covered with the diaphragm 6. The structure and the fixed mode of the diaphragm 6 in each communicating air hole are the same, and the direction in the communicating air hole is different, so that the on-off direction of each communicating air hole is controlled, and the structure and the fixed mode are specifically as follows: the diaphragm on the first communicating hole 115 can be opened only toward the inside of the sixth sub-air chamber 112, the diaphragm on the second communicating hole 116 can be opened only toward the inside of the second sub-air chamber 114, the diaphragm on the third communicating hole 134 can be opened only toward the inside of the third sub-air chamber 132, and the diaphragm on the fourth communicating hole 135 can be opened only toward the outside of the fourth sub-air chamber 133.

When the turning handle 52 is turned until the turning handle 52 abuts with the one end 151 of the escape groove (i.e., the state in fig. 4), the first sub air chamber 113 and the third sub air chamber 132 communicate only through the first sub storage chamber 121 and the second sub air chamber 114 and the fourth sub air chamber 133 communicate only through the second sub storage chamber 122. When the turning handle 52 is turned until the turning handle 52 abuts against the other end 152 of the escape groove, the first and third air-dividing

chambers

113 and 132 communicate only through the second branch storage chamber 122 and the second and fourth air-dividing

chambers

114 and 133 communicate only through the first branch storage chamber 121.

The gas communication route and the switching process of the invention are as follows:

it is assumed that in the figure there is an initial state,

under the control action of the diaphragm, the flow path of the gas during air suction is as follows: the outer end air hole 131 → the fifth air-dividing cavity 136 → the third communicating air hole 134 → the third air-dividing cavity 132 → the first branch storage cavity 121 → the first air-dividing cavity 113 → the first communicating hole 115 → the sixth air-dividing cavity 112 → the inner end air hole 111; the flow path of the gas during expiration is as follows: the inner end air hole 111 → the sixth air-distribution chamber 112 → the second communication air hole 116 → the second air-distribution chamber 114 → the second branch storage chamber 122 → the fourth air-distribution chamber 133 → the fourth communication air hole 135 → the fifth air-distribution chamber 136 → the outer end air hole 131.

When activated carbon (activated carbon) in the first storage cavity 121 produces the particle blocking dirt and influences to breathe in, then hold the twist grip 52 and rotate the drum 5 and rotate the other end 152 butt of handle 52 with the groove of dodging together, the round leads to 5 and has rotated 180 this moment, make the position of first storage cavity 121 and the second storage cavity 122 to trade, breathe in this moment and filter through the activated carbon in the second storage cavity 122, gaseous during expiration flows out through the activated carbon in the first storage cavity 121, the reverse blow of the activated carbon in the first storage cavity 121 is realized to the gaseous realization of exhalation.

Referring to fig. 5, the cylinder 5-1 and the cylinder cover 5-2 are connected in a manner that a plurality of jacks 53 distributed along the circumferential direction of the cylinder are arranged on the end surface of the cylinder 5-1, a plurality of bolts 54 distributed along the circumferential direction of the sleeve are arranged on the end surface of the cylinder cover 5-2, and the cylinder cover are connected together by inserting the bolts into the jacks in a one-to-one correspondence manner, so that the cylinder 5-1 and the cylinder cover 5-2 can rotate together when rotating.

The membrane is further described below in terms of the structure of the membrane in the second communication air hole 116:

referring to fig. 6, the diaphragm 6 is provided at the center thereof with a connection pin 61, the connection pin 61 is screwed on the connection frame 62, and the connection frame 62 is connected with the second communication air hole 116 to fix the diaphragm. The thickness of the diaphragm 6 becomes thinner from the center toward the periphery, and specifically, both side surfaces of the diaphragm are formed to be convex. The diaphragm 6 achieves sealing of the second communication air hole 116 by abutting the peripheral edge on the end face of the end of the second communication air hole 116 located in the second sub-air chamber 114. When the airflow generates an acting force that the first gas distribution cavity 113 flows to the sixth gas distribution cavity 112 through the second communicating air hole 116, the diaphragm 6 is driven to block the second communicating air hole 116, so that the partition is realized; when the air flow generates a force that flows from the sixth air-separating chamber 112 to the first air-separating chamber 113 through the second communicating air hole 116, the diaphragm is driven to be separated from the second communicating air hole 116, so that the air flow can flow therethrough.

Claims

1. A viewing platform with a windshield is characterized by comprising a base, wherein a table top and a lifting chair located behind the table top are arranged on the base, a liftable pedal and a fan heater hinged to blow air to a person sitting on the lifting chair are arranged below the table top, the rear side of the table top is hinged with the windshield which can be erected and stopped in front of the lifting chair and can be horizontally placed on the table top, a glass part through hole is formed in the windshield, a filter is connected in the glass part through hole and comprises a shell and two grid plates located in the shell, the shell is divided into an inner end air cavity, an active carbon storage cavity and an outer end air cavity by the two grid plates, the inner end air cavity is provided with an inner end air hole, the active carbon storage cavity is filled with active carbon, the outer end air cavity is provided with an outer end air hole, and the outer end air hole is provided with a, the inner air hole is positioned at one end of the filter facing the lifting chair, the inner air hole is in butt joint with one end of the flexible air inlet pipe, the other end of the flexible air inlet pipe is provided with a bandage, a table board part accommodating hole for accommodating the filter when a windshield is horizontally arranged on the table board is arranged on the table board, the inner air hole comprises a sixth air distribution cavity, a first air distribution cavity and a second air distribution cavity, the inner air hole is arranged on the sixth air distribution cavity, the first air distribution cavity is provided with a first vent hole communicated with the sixth air distribution cavity, the second air distribution cavity is provided with a second communicated air hole communicated with the sixth air distribution cavity, the outer air cavity comprises a third air distribution cavity, a fourth air distribution cavity and a fifth air distribution cavity, the outer air hole comprises a fifth air distribution cavity, the third air distribution cavity is provided with a third communicated air hole communicated with the fifth air distribution cavity, and the fourth communicated air hole communicated with the fifth air distribution cavity is, all the communicating air holes are covered with membranes, the membranes on the first communicating air hole can only be opened towards the inside of a sixth air distribution cavity, the membranes on the second communicating air hole can only be opened towards the inside of a second air distribution cavity, the membranes on the third communicating air hole can only be opened towards the inside of a third air distribution cavity, the membranes on the fourth communicating air hole can only be opened towards the outside of the fourth air distribution cavity, a cylinder is further rotatably connected in the shell, the two grid plates form two bottom walls of the cylinder, the inner space of the cylinder forms the activated carbon storage cavity, a partition plate is arranged in the cylinder, and the activated carbon storage cavity is divided into a first storage cavity and a second storage cavity by the partition plate; the first branch storage cavity and the second branch storage cavity are communicated, one is only communicated with the first gas distribution cavity and the third gas distribution cavity, and the other is only communicated with the second gas distribution cavity and the fourth gas distribution cavity; the casing is equipped with dodges the groove, be equipped with the warp on the global of drum dodge the groove and stretch out the turning handle of casing, the central angle that dodges the groove and correspond is 180, turning handle with when dodging the one end butt of groove together first minute air cavity and third minute air cavity only through first branch storage chamber intercommunication just second minute air cavity and third minute air cavity only pass through second branch storage chamber intercommunication, turning handle with when dodging the other end butt of groove together first minute air cavity and third minute air cavity only pass through second branch storage chamber intercommunication just second minute air cavity and fourth minute air cavity only pass through first branch storage chamber intercommunication.

2. The viewing platform with the windshield according to claim 1, wherein the outer end air hole is a circular hole, the shell is provided with an annular sliding groove extending along the circumferential direction of the outer end air hole, a sliding head is connected in the annular sliding groove in a sliding manner, and the sliding head is connected with a cleaning sheet horizontally arranged on the membrane.

3. The windscreen viewing platform as set forth in claim 2 wherein said cleaning sheet has a length greater than or equal to the radius of said outer end vents.

4. The viewing platform with a windshield according to claim 1, 2 or 3, wherein the center of the membrane is provided with a connecting pin, the thickness of the membrane is gradually reduced from the center to the periphery, and the membrane abuts against the end face of the communicating air hole through the periphery to seal the communicating air hole.

5. The viewing platform with a windshield according to claim 1, 2 or 3, wherein the area of the membrane is larger than the opening area of the outer end air hole, a grid plate is arranged inside the membrane in the outer end air hole, and the periphery of the membrane is connected with the grid plate.

6. The windscreen viewing platform as set forth in claim 1, 2 or 3 further comprising a cup holder adapted to be suspended within both said counter-top receiving cavity and said glass portion through-hole.

7. The viewing platform with a windshield according to claim 6, wherein the platform portion accommodating hole is a through hole, and the step plate is located right below the platform portion accommodating hole.