CN207378593U

CN207378593U - LED plant lamps

Info

Publication number: CN207378593U
Application number: CN201720398257.6U
Authority: CN
Inventors: 张宝
Original assignee: Gansu Rongbao Technology Co ltd
Current assignee: Gansu Rongbao Technology Co ltd
Priority date: 2017-04-17
Filing date: 2017-04-17
Publication date: 2018-05-18
Anticipated expiration: 2027-04-17

Abstract

The utility model discloses a kind of LED plant lamps, including：Fixed frame, including pedestal, elevating lever, support seat, elevating lever is fixed on institute's pedestal, and support base is in positive multi-edge column-shaped structure, is fixed on elevating lever, including the multiple side walls side by side up and down for being provided with the first hinged seat, the second hinged seat；Multiple fixed seats, lower end are hinged with the first hinged seat, and upper end is supported by being hinged on the second hinged seat upper connector so that the angle of adjustable angle is formed between fixed seat and fixed frame；Multiple LED lamps are respectively arranged in multiple fixed seats, and when adjusting the angle between fixed seat and fixed frame, the direction of illumination of LED lamp is adjustable.Effect：Supporting rod on fixed frame is in positive multi-edge column-shaped, is equipped with LED lamp on each of which side wall, the plant of surrounding uniformly can be irradiated, and reduces irradiation blind area, to promote the photosynthesis of plant；Angle each between LED lamp and supporting rod is adjustable, irradiating angle can be adjusted according to plant different growing stage.

Description

LED plant lamps

Technical field

The utility model is related to field of light fittings more particularly to a kind of LED plant lamps.

Background technology

Sunlight is one of required necessary logistics condition of growth and development of plants, however sunlight can not twenty four hours Continual irradiation plant reduces so as to cause plant growth efficiency.LED light source has the advantages that type of wavelength is enriched, LED light Spectral region needed for the luminous energy and plant light synthesis of radiation is coincide, and therefore, it is pure to obtain can to combine various LED light on demand Monochromatic light or complex light.LED plant lamps are exactly using the function of above-mentioned LED light the light of specific wavelength to be concentrated balancedly to irradiate plant Object, can not only adjust plant bloom with as a result, plant height and plant nutrient composition can also be controlled, therefore LED plant lamps It is widely used in the fields such as plant culture, facilities horticulture and industrial seedling rearing.

Existing LED plant lamps are formed with larger photograph when carrying out light filling irradiation to plant around headlamp Blind area is penetrated, it is uneven so as to cause the plant light around headlamp, therefore, it is unfavorable for the growth and development of plant, also, light Irradiating angle it is non-adjustable, therefore, be also unfavorable for the irradiation to plant.

Utility model content

The utility model is intended to solve at least some of the technical problems in related technologies.For this purpose, this reality It is to propose a kind of LED plant lamps with a new purpose.

To achieve the above object, according to the LED plant lamps of the utility model embodiment, including：

Fixed frame, the fixed frame include pedestal, elevating lever and support base, and institute's pedestal is fixed in the elevating lever lower end On, the support base is in positive multi-edge column-shaped structure, and is fixed on the upper end of the elevating lever, including multiple side walls, each side wall On side by side up and down be provided with the first hinged seat and the second hinged seat；

Multiple fixed seats, multiple fixed seats are corresponded with multiple side walls, and each fixed seat lower end Be hinged with first hinged seat, upper end is movably connected in by a connection piece on second hinged seat, and the connector with Second hinged seat is hinged, so that each fixed seat is from top to bottom from the direction away from the support base to close to the support The direction of seat tilts, and the tilt adjustable between support base and fixed frame；

Multiple LED lamps, multiple LED lamps are correspondingly arranged in respectively in multiple fixed seats.

According to the LED plant lamps that the utility model embodiment provides, including fixed frame, lifting is provided on fixed frame Bar and support base, support base are in positive multi-edge column-shaped structure, are both provided with one including multiple side walls, on each side wall and are fixed with LED The fixed seat of lamps and lanterns in this way, uniform irradiation just can be carried out to the plant of surrounding, reduces irradiation blind area, so as to avoid because of light It is uneven and cause development of plants uneven, meanwhile, fixed seat lower end is hinged on the first hinged seat, and upper end is hinged by being hinged on second Connector on seat is supported, in this way, can to inclined adjustable angle between fixed seat and support base so that be fixed on The irradiating angle of LED lamp in fixed seat is adjustable, in this way, can according to the growing state of plant and apart from lamps and lanterns away from From the irradiating angle of light regulating, so as to preferably promote plant strain growth.

In addition, following additional technology can also be had according to the LED plant lamps of the utility model above-described embodiment Feature：

In one embodiment according to the present utility model, the fixed seat includes front and rear opposite front shoe, fixes afterwards Plate and the upper mounted plate and bottom plate of the connection front shoe and rear fixed plate, the front shoe and rear fixed plate it Between be formed with a glade plane space, the rear fixed plate compared be from top to bottom spaced apart in the one side of front shoe be equipped with it is multiple recessed Slot；

The connector includes kelly and is arranged at the kelly both ends and the hinge being hinged on second hinged seat Extension bar, the kelly can along the glade plane space slide and it is selective be caught in any one groove so that the support Tilt adjustable between seat and fixed frame.

In one embodiment according to the present utility model, the LED lamp includes the lamp holder of lamp housing and setting in the inner, institute The section for stating lamp housing is square structure, including front end face, rear end face, upper surface, lower face left side and right side, the front end Face, left side and right side are uniformly provided with multiple light holes, and multiple LED lamp beads, multiple LED are provided on the lamp holder Lamp bead corresponds respectively with multiple light holes on the front end face of lamp housing, left side and right side.

In one embodiment according to the present utility model, upper surface, lower face and the rear end face of the lamp housing open up respectively There is first open, the second open and the 3rd opening, multiple radiating fins are arranged at intervals on the lamp holder；Before the fixed seat Multiple first radiator fans are from top to bottom provided in fixed plate, multiple first radiator fans are open opposite with the described 3rd And blowing direction is towards multiple radiating fins；The upper end of the front shoe extends to form forward extension, the extension It is provided with multiple second radiator fans in portion, the blowing directions of multiple second radiator fans is open and the towards described first Two is open.

In one embodiment according to the present utility model, multiple LED lamp beads are respectively red-light LED lamp bead and blue light LED lamp bead, the red-light LED lamp bead and blue-ray LED lamp bead are alternatively arranged, the wavelength of the red-light LED lamp bead for 620nm~ 625nm, the wavelength of the blue-ray LED lamp bead is 460nm~465nm.

In one embodiment according to the present utility model, the elevating lever is hydraulic lifting arm, is provided on the pedestal For controlling the pedal control switch of the lifter rod lifting.

In one embodiment according to the present utility model, the base bottom is provided with movable pulley.

In one embodiment according to the present utility model, the first magnetic part is both provided in multiple grooves, in the kelly It is provided with and opposite polarity second magnetic part of first magnetic part.

In one embodiment according to the present utility model, first hinged seat and second hinged seat pass through a connection Bar integrally connected, the connecting rod are slidably arranged on the side wall of the fixed frame, so that first hinged seat and institute It is adjustable to state height of second hinged seat on the side wall.

Description of the drawings

Fig. 1 is the structure diagram of the utility model embodiment entirety；

Fig. 2 is the structure diagram of the utility model embodiment fixed seat；

Fig. 3 is the structure diagram of the utility model embodiment lamp housing.

Reference numeral：

Pedestal 10；

Elevating lever 20；

Support base 30；

First hinged seat 300；

Second hinged seat 310；

Fixed seat 40；

Front shoe 400；

First radiator fan 4000；

Rear fixed plate 410；

Groove 4100；

Glade plane space 4110；

Upper mounted plate 420；

Bottom plate 430；

Extension 440；

Second radiator fan 4400；

Lamp housing 50；

Front end face 500；

Light hole 5000；

Right side 510；

Second opening 520；

3rd opening 530；

Lamp holder 60；

Radiating fin 600.

The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.

Specific embodiment

The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that the utility model Limitation.

In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable The orientation or position relationship of the instructions such as hour hands ", " counterclockwise " are based on orientation shown in the drawings or position relationship, merely to just In description the utility model and simplified description rather than instruction or imply that signified device or element must be with specific sides Position, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.

In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or Implicitly include one or more this feature.In the description of the utility model, " multiple " are meant that two or two More than, unless otherwise specifically defined.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. terms should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be Concrete meaning in the utility model.

Referring to figs. 1 to shown in Fig. 3, the utility model embodiment provides a kind of LED plant lamps, including fixed frame, Multiple fixed seats 40, multiple LED lamps.

Specifically, fixed frame includes pedestal 10, elevating lever 20 and support base 30, institute's pedestal 10 is fixed in 20 lower end of elevating lever On, support base 30 is in positive multi-edge column-shaped structure, and is fixed on the upper end of elevating lever 20, including multiple side walls, on each side wall It is side by side up and down to be provided with the first hinged seat 300 and the second hinged seat 310；

Multiple fixed seats 40 are corresponded with multiple side walls, and each 40 lower end of fixed seat and the first hinged seat 300 are hinged, Upper end is movably connected in by a connection piece on the second hinged seat 310, and connector and the second hinged seat 310 are hinged, so that each Fixed seat 40 is from top to bottom tilted from the direction away from support base 30 to close to the direction of support base 30, and fixed seat 40 is with fixing Tilt adjustable between frame；

Multiple LED lamps are correspondingly arranged in respectively in multiple fixed seats 40.

More specifically, support base 30 is positive polygon prism type structure, then, when being respectively and fixedly provided with a LED on each of which side wall During lamps and lanterns, just surrounding plant can be irradiated, in this way, the irradiation blind area of light can be reduced so that surrounding Plant illumination is more uniform, effectively avoids the plant in irradiation blind area slower than the plant growth in irradiation area, growth cycle The problem of extension, growth quality is poor.In fact, the quantity of the side wall of support base 30 is more, the number of fixable LED lamp thereon Amount is also more, correspondingly, the region area that light can irradiate is with regard to bigger, irradiation blind area also just smaller, the illumination of light Just more uniformly, then the growth of plant also just more balances.And 40 lower end of fixed seat for fixing LED lamp is hinged on the first hinge On joint chair 300, upper end is hinged on by connector on the second connecting seat 310 so that fixed seat 40 is from top to bottom from away from support The direction of seat 30 is tilted to close to the direction of support base 30, also, the tilt adjustable between fixed seat 40 and supporting rack, That is by adjusting the angle between fixed seat 40 and supporting rack, the light that the LED lamp in fixed seat 40 can be sent Irradiating angle can be adjusted, in this way, can according to the upgrowth situation of plant and the distance between plant and lamps and lanterns come The regulating irradiation angle of light is carried out, to be irradiated to plant, so as to promote its photosynthesis.Support base 30 is arranged at lifting On bar 20, then, the height that this allows for support base 30 is adjustable, so, for the plant of different types of different height, can lead to It crosses elevating lever 20 and support base 30 is adjusted into suitable height, to be irradiated to plant.

According to the LED plant lamps that the utility model embodiment provides, including fixed frame, lifting is provided on fixed frame Bar 20 and support base 30, support base 30 are in positive multi-edge column-shaped structure, and including multiple side walls, a fixation is both provided on each side wall There is the fixed seat 40 of LED lamp, in this way, just uniform irradiation can be carried out to the plant of surrounding, reduce irradiation blind area, so as to avoid Cause development of plants uneven due to light is uneven, meanwhile, 40 lower end of fixed seat is hinged on the first hinged seat 300, and upper end is by cutting with scissors The connector being connected on the second hinged seat 310 is supported, in this way, can be to inclined angle between fixed seat 40 and support base 30 Spend it is adjustable so that be fixed on it is adjustable with the irradiating angle of the LED lamp in fixed seat 40, in this way, can be according to the growth of plant Situation and the irradiating angle apart from light regulating apart from lamps and lanterns, so as to preferably promote plant strain growth.

It is favourable, in one embodiment of the utility model, fixed seat 40 include front and rear opposite front shoe 400, Rear fixed plate 410 and the upper mounted plate 420 of connection front shoe 400 and rear fixed plate 410 and bottom plate 430, preceding fixation Be formed with a glade plane space 4110 between plate 400 and rear fixed plate 410, rear fixed plate 410 compared with front shoe 400 one side On in the width direction from top to bottom be spaced apart be equipped with multiple grooves 4100；

Connector includes kelly and the hinge bar for being arranged at kelly both ends and being hinged on the second hinged seat 310, kelly Can be slided along glade plane space 4110 and it is selective be caught in any one groove 4100 so that between support base 30 and fixed frame Tilt adjustable.

That is, the hinge bar at the both ends of kelly may be such that kelly after the rotation of the second hinged seat 310 on connector Along the glade plane space formed by the front shoe 400 of fixed seat 40, rear fixed plate 410, upper mounted plate 420 and bottom plate 430 It is slided in 4110, also, kelly can be caught in any one and be opened in rear fixed plate during being slided along glade plane space 4110 410 compared in the groove 4100 in the one side of front shoe 400, in this way, can fixed seat 40 be carried out hook fixation；And block Bar is caught in the groove 4100 of different positions, and inclined angle is also just different between fixed seat 40 and support base 30, specific next It says, when kelly is caught in the groove 4100 of the top, the angle between fixed seat 40 and support base 30 is less than kelly The angle between fixed seat 40 and support base 30 when being caught in the lowermost groove 4100, that is to say, that when kelly by When being caught under in the groove 4100 of different position, the angle between fixed seat 40 and support base 30 gradually increases, and fixes Angle between seat 40 and supporting rod gradually increases, then, corresponding, the photograph for the light that the LED lamp in fixed seat 40 is sent Firing angle degree can be adjusted, in this way, can light regulating irradiating angle, to be preferably irradiated to plant, promote Its photosynthesis.

Favourable, in one embodiment of the utility model, LED lamp includes the lamp holder of lamp housing 50 and setting in the inner 60, the section of lamp housing 50 is square structure, including front end face 500, rear end face, upper surface, lower face left side and right side 510, front end face 500, left side and right side 510 are uniformly provided with multiple light holes 5000, and multiple LED are provided on lamp holder 60 Lamp bead, multiple LED lamp beads respectively with multiple light holes 5,000 1 on the front end face of lamp housing 50 500, left side and right side 510 One corresponds to.

So, on lamp holder 60 with multiple light holes 5000 on the front end face 500 of lamp housing 50, left side and right side 510 The light that one-to-one LED lamp bead is sent just can penetrate the front that light hole 5000 is irradiated to the front end face 500 of lamp housing 50 And the plant of the left and right sides, in this way, just so that light emitting angle of the lamps and lanterns with bigger, can cover broader irradiation model It encloses, so as to be irradiated to more plants around, correspondingly, also can further reduce irradiation blind area, is more advantageous to Irradiation to plant.

Favourable, in one embodiment of the utility model, upper surface, lower face and the rear end face of lamp housing 50 are opened respectively Multiple radiating fins are arranged at intervals with equipped with first open, the second opening 520 and the 3rd opening 530, the rear end face of lamp holder 60 600；Multiple first radiator fans 4000, radiator fan and the 3rd are from top to bottom provided on the front shoe 400 of fixed seat 40 Opening 530 is opposite and blowing directions are towards multiple radiating fins 600；The upper end of front shoe 400 extends to form forward extension 440, multiple second radiator fans 4400, the blowing direction direction of multiple second radiator fans 4400 are provided on extension 440 First open and the second opening 520.

On the one hand, radiating fin 600 has certain heat dissipation effect, and certain cooling-down effect can be played to lamp holder 60, On the other hand, the wind energy for multiple first radiator fans 4000 blowout that the front end face 500 of fixed seat 40 is set is enough spacious by the 3rd Mouth 530 is blown on radiating fin 600, and the wind energy of multiple second radiator fans 4400 blowout on extension 440 enough passes through first Opening blows to radiating fin 600, in this way, just further can further cool down to lamp holder 60, in addition, the second radiator fan 4400 can also blow out the hot-air inside lamp housing 50 out of second opening 520 to outside lamp housing 50, in this way, can also be further Cool down to lamp holder 60, so, cooling-down effect is apparent, effectively prevents when temperature is excessively high so that electronic component was damaged Problem, so as to extend the service life of the utility model.

Favourable, in one embodiment of the utility model, multiple LED lamp beads are respectively red-light LED lamp bead and blue light LED lamp bead, red-light LED lamp bead and blue-ray LED lamp bead are alternatively arranged, and the wavelength of red-light LED lamp bead is 620nm~625nm, blue light The wavelength of LED lamp bead is 460nm~465nm.The light source of above two wave band can allow plant to generate optimal photosynthetic work With so that plant obtains optimal growth conditions, experiment and practical application all show except to plant when lacking light between in obtain Outside light filling, plant is also allowed to promote the differentiation of multiple side shoot and bud in growth course, accelerate root, stem and leaf growth, accelerate plant carbon water The synthesis of compound and the synthesis of vitamin, shorten growth cycle.

Favourable, in one embodiment of the utility model, elevating lever 20 is hydraulic lifting arm 20, is set on pedestal 10 It is useful for the control switch that control elevating lever 20 lifts, then, when needing to adjust the height of elevating lever 20, lifting can be passed through Bar 20 is adjusted so that easy to operate.

It should be noted that hydraulic lifting arm 20 is the prior art, thus, then this, its structure is not illustrated.

Favourable, in one embodiment of the utility model, 10 bottom of pedestal is provided with movable pulley, by pedestal 10 Bottom set movable pulley so that the utility model can move, be easy to use.

Favourable, in one embodiment of the utility model, the side wall and bottom wall of multiple grooves 4100 are both provided with the One magnetic part, be provided in kelly with opposite polarity second magnetic part of the first magnetic part, in this way, can make kelly and groove 4100 is attracting, then, on the one hand, by the attraction between the first magnetic part and the second magnetic part, kelly can be carried out certain Guiding function, kelly to be guided to be caught in groove 4100, on the other hand, by between the first magnetic part and the second magnetic part Attraction also may be such that when kelly is caught in groove 4100, can preferably be fixed in groove 4100.

Favourable, in one embodiment of the utility model, the first hinged seat 300 and the second hinged seat 310 pass through one Connecting rod integrally connected, connecting rod are slidably arranged on the side wall of fixed frame, so that the first hinged seat 300 and second is hinged 310 height on side wall of seat is adjustable.

That is, the first hinged seat 300 and the second hinged seat 310 on each side wall can be by connecting rods in correspondence Side wall on slide up and down, it is corresponding to adjust the height of the first hinged seat 300 and the second hinged seat 310, fixed seat 40 and Height of the LED lamp on side wall in fixed seat 40 is also adjustable.In general, different plants, growing height can not yet Together, and distance of the light source away from plant can also influence radiation response to plant, therefore, fixed seat 40 on each side and fixed Height of the LED lamp on side wall on seat 40 is adjustable, so can plant a variety of different heights simultaneously around fixed frame Plant by the height of the LED lamp on separately adjustable each side wall, can be adjusted LED lamp to suitable irradiation plant Highly, the irradiation demand of different plants is better met, so as to enhance the practicability of the utility model.

More specifically, sliding slot can be vertically opened up on each side wall, and sets and can glide along sliding slot in connecting rod Dynamic sliding block, in this way, the first hinged seat 300 and the second hinged seat 310 can very easily be adjusted on corresponding side wall Highly.Dovetail groove can be used in sliding slot, it is possible to use T-slot, after certain altitude is slided into, can also by fastening bolt by its The height is fixed on, to use.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term It states and may not refer to the same embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be It is combined in an appropriate manner in any one or more embodiments or example.

Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is Illustratively, it is impossible to be interpreted as the limitation to the utility model, those of ordinary skill in the art are not departing from the utility model Principle and objective in the case of above-described embodiment can be changed in the scope of the utility model, change, replace and Modification.

Claims

1. a kind of LED plant lamps, which is characterized in that including：

Fixed frame, the fixed frame include pedestal, elevating lever and support base, and the elevating lever lower end is fixed on institute's pedestal, institute Support base is stated in positive multi-edge column-shaped structure, and is fixed on the upper end of the elevating lever, including multiple side walls, on each side wall on Under the first hinged seat and the second hinged seat has been arranged side by side；

Multiple fixed seats, multiple fixed seats are corresponded with multiple side walls, and each fixed seat lower end and institute The first hinged seat is stated to be hinged, upper end is movably connected in by a connection piece on second hinged seat, and the connector with it is described Second hinged seat is hinged, so that each fixed seat is from top to bottom from the direction away from the support base to close to the support base Direction tilts, and the tilt adjustable between support base and fixed frame；

2. LED plant lamps according to claim 1, which is characterized in that the fixed seat include it is front and rear it is opposite before Fixed plate, rear fixed plate and the upper mounted plate and bottom plate of the connection front shoe and rear fixed plate, it is fixed before described Be formed with a glade plane space between plate and rear fixed plate, the rear fixed plate compared in the one side of front shoe from top to bottom between It separates equipped with multiple grooves；

The connector includes kelly and is arranged at the kelly both ends and the hinge bar being hinged on second hinged seat, The kelly can be slided along the glade plane space and it is selective be caught in any one groove so that the support base with it is solid Determine the tilt adjustable between frame.

3. LED plant lamps according to claim 2, which is characterized in that the LED lamp includes lamp housing and is arranged at Lamp holder in it, the section of the lamp housing are square structure, including front end face, rear end face, upper surface, lower face left side and the right side End face, the front end face, left side and right side are uniformly provided with multiple light holes, multiple LED light are provided on the lamp holder Pearl, multiple LED lamp beads correspond respectively with multiple light holes on the front end face of lamp housing, left side and right side.

4. LED plant lamps according to claim 3, which is characterized in that the upper surface of the lamp housing, lower face and after End face offers first open, the second open and the 3rd opening respectively, and multiple radiating fins are arranged at intervals on the lamp holder；Institute State and multiple first radiator fans be from top to bottom provided on the front shoe of fixed seat, multiple first radiator fans with it is described 3rd open opposite and blowing direction is towards multiple radiating fins；The upper end of the front shoe extends to form forward extension Portion is provided with multiple second radiator fans on the extension, and the blowing direction of multiple second radiator fans is described in First open and the second opening.

5. LED plant lamps according to claim 3, which is characterized in that multiple LED lamp beads are respectively feux rouges LED lamp bead and blue-ray LED lamp bead, the red-light LED lamp bead and blue-ray LED lamp bead are alternatively arranged, the ripple of the red-light LED lamp bead A length of 620nm~625nm, the wavelength of the blue-ray LED lamp bead is 460nm~465nm.

6. LED plant lamps according to claim 1, which is characterized in that the elevating lever is hydraulic lifting arm, described It is provided with to control the control of the lifter rod lifting to switch on pedestal.

7. LED plant lamps according to claim 1, which is characterized in that the base bottom is provided with movable pulley.

8. LED plant lamps according to claim 2, which is characterized in that it is magnetic that first is both provided in multiple grooves Part is provided with and opposite polarity second magnetic part of first magnetic part in the kelly.

9. LED plant lamps according to claim 1, which is characterized in that first hinged seat and second hinge Joint chair is slidably arranged on by a connecting rod integrally connected, the connecting rod on the side wall of the fixed frame, so that described The height of first hinged seat and second hinged seat on the side wall is adjustable.