CN109106103A - A kind of cabinet for TV for hiding laser television with open-and-close mechanism - Google Patents

A kind of cabinet for TV for hiding laser television with open-and-close mechanism Download PDF

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Publication number
CN109106103A
CN109106103A CN201811215750.5A CN201811215750A CN109106103A CN 109106103 A CN109106103 A CN 109106103A CN 201811215750 A CN201811215750 A CN 201811215750A CN 109106103 A CN109106103 A CN 109106103A
Authority
CN
China
Prior art keywords
cabinet
open
laser television
close mechanism
limiter
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.)
Pending
Application number
CN201811215750.5A
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Chinese (zh)
Inventor
施跃华
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Shunhe Networking Technology Co Ltd
Original Assignee
Jiangsu Shunhe Networking Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jiangsu Shunhe Networking Technology Co Ltd filed Critical Jiangsu Shunhe Networking Technology Co Ltd
Priority to CN201811215750.5A priority Critical patent/CN109106103A/en
Publication of CN109106103A publication Critical patent/CN109106103A/en
Pending legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B81/00Cabinets or racks specially adapted for other particular purposes, e.g. for storing guns or skis
    • A47B81/06Furniture aspects of radio, television, gramophone, or record cabinets
    • A47B81/061Furniture aspects of radio, television, gramophone, or record cabinets the device supports being adjustable
    • A47B81/062Furniture aspects of radio, television, gramophone, or record cabinets the device supports being adjustable horizontally
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B96/00Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
    • A47B96/20Furniture panels or like furniture elements
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B97/00Furniture or accessories for furniture, not provided for in other groups of this subclass
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47BTABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2220/00General furniture construction, e.g. fittings
    • A47B2220/0061Accessories

Landscapes

  • Details Of Television Systems (AREA)

Abstract

The present invention provides a kind of cabinet for TV for hiding laser television with open-and-close mechanism, belong to cabinet for TV technical field, including cabinet and it is placed in the intracorporal laser television of case, cabinet includes top plate, bottom plate and the front panel being vertically connected with the two, rear panel and 2 side panels, the lower surface of top plate is equipped with open-and-close mechanism, open-and-close mechanism is connected with the centre panel that can be opened and closed in cover top surface, open-and-close mechanism includes link shaft and the 2 parallel feed screw nuts vertical with linkage shaft, the both ends for the shaft that links are equipped with the first bevel gear, feed screw nut is equipped with the second bevel gear being meshed with the first bevel gear with one end similar in linkage shaft, linkage shaft is connected with driving motor, movable block is cased on feed screw nut, movable block is connected with metal plate, metal plate is connected with the side of centre panel.Laser television camera lens can be exposed or be hidden according to the needs of use by folding with convenience of the present invention, and laser television is not required to additional occupied space.

Description

A kind of cabinet for TV for hiding laser television with open-and-close mechanism
Technical field
The invention belongs to cabinet for TV technical fields, and in particular to a kind of electricity for hiding laser television with open-and-close mechanism Depending on cabinet.
Background technique
Laser television is to use laser light source as display light source and front projection display technology is cooperated to be imaged, and is equipped with dedicated throwing Shadow curtain can receive the projection display apparatus of broadcast TV program or internet television program.
There are two types of existing laser television mounting means: the first is to use to be directly placed in the cabinet for TV widened, this Mode can be moved arbitrarily using when laser television, and laser television heat dissipation is preferable, but laser television when not in use can occupied space; Such usage mode is required to limit by laser television cabinet projection size simultaneously, and the width dimensions that will lead to cabinet for TV are wide, shadow The appearance for ringing cabinet for TV, compresses the use space in parlor.Second is directly to be embedded into interior of the cabinet, and TV cabinet panel installs glass additional Glass realizes that the purpose for not blocking laser television camera lens, such mode cabinet for TV need to customize, and cabinet for TV width will increase, and in addition swash Photoelectricity, which passes through one layer of glass depending on light, will lead to projection quality's decline, and internal heat dissipating effect is bad, will lead to laser television heat dissipation Mouth hot stack, leads to laser television reduced service life.
Summary of the invention
Laser television is hidden with open-and-close mechanism in view of the deficiencies of the prior art, it is an object of the present invention to provide a kind of Cabinet for TV, laser television camera lens can expose or be hidden according to the needs of use by folding with convenience, and laser television is not required to additionally Occupied space.
The present invention provides the following technical solutions:
A kind of cabinet for TV for hiding laser television with open-and-close mechanism, including cabinet and be placed in the case it is intracorporal swash Photoelectricity view, the cabinet includes top plate and bottom plate and the front panel being vertically connected with the two, rear panel and 2 side panels, described The lower surface of top plate is equipped with open-and-close mechanism, and the open-and-close mechanism is connected with the centre panel that can be opened and closed in the cover top surface, The open-and-close mechanism includes link shaft and the 2 parallel feed screw nuts vertical with the linkage shaft, the linkage turn The both ends of axis are equipped with the first bevel gear, and the feed screw nut is equipped with one end similar in the linkage shaft and first umbrella tooth The second bevel gear being meshed is taken turns, the linkage shaft is connected with driving motor, movable block, institute are cased on the feed screw nut It states movable block and is connected with metal plate, the metal plate is connected with the side of the centre panel.
It preferably, further include cooling mechanism, the cooling mechanism includes radiator fan, air inlet and air outlet, the case It is equipped with 2 partitions parallel with the side panel in vivo and the two sides of the cabinet are divided into 2 vented cavities, on the partition It is equipped with the radiator fan, the position that the rear panel is located at 2 vented cavities is respectively equipped with the air inlet and described Air outlet.
It preferably, further include control mechanism, the control mechanism includes the remote controler being connected to each other and control mainboard, the drive Dynamic motor, the laser television, the radiator fan are electrical connected with the control mainboard respectively.
Preferably, the air inlet and the air outlet are mesh plate structure.
Preferably, the cooling mechanism further includes the ventilation opening positioned at the rear panel center.
Preferably, the top plate lower surface is equipped with the limiter positioned at the feed screw nut both ends, the limiter and institute Control mainboard is stated to be electrical connected, the metal plate be equipped with can with the limiter touch touching hook, the touching hook and one of them When the limiter is touched, the centre panel is in opened condition, described when the touching hook and another described limiter are touched Centre panel is in closed state.
Preferably, the limiter includes the limiter ontology for being fixed on the top plate lower surface, the limiter ontology It is connected with flexible connecting rod, the end of the connecting rod is equipped with contact.
Preferably, the touching hook includes parallel first crossbar and second crossbar, and the first crossbar is horizontal with described second Vertical bar, the first crossbar vertical angle of cut and the second crossbar and vertical bar with the vertical bar are vertically connected between bar The vertical angle of cut can mutually be touched with 2 contacts respectively.
Preferably, the side panel is equipped with docking mechanism, and the docking mechanism includes the AC being successively arranged from top to bottom External power supply socket, cable interface and RS232 interface of internet of things, the AC external power supply socket, cable interface and RS232 Internet of Things Network interface passes through medium line and is connected with the laser television.
Preferably, the both ends of the linkage shaft and the feed screw nut pass through bearing block and are fixed under the top plate Surface.
The beneficial effects of the present invention are:
(1) present invention controls linkage shaft positive and negative rotation with driving motor, drives feed screw nut's positive and negative rotation of two sides, into One step, movable block and metal plate can be moved back and forth along feed screw nut, and centre panel is opened and closed in the upper surface of top plate therewith, thus root It according to using needs that laser television camera lens is exposed or hidden, laser television is not required to additional occupied space.
(2) present invention is equipped with cooling mechanism, solves the problems, such as laser television thermovent hot stack, is conducive to extend laser television Service life.
(3) present invention is equipped with control mechanism, and one key control centre panel of remote controler and laser television open or close, side Just the use of user.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is structural schematic diagram of the invention when centre panel is opened;
Fig. 2 is the structural schematic diagram of open-and-close mechanism when centre panel is opened;
When Fig. 3 in Fig. 2 A partial structurtes enlarged drawing;
Fig. 4 is backsight structural representation of the invention;
Fig. 5 is present invention looks up structural representation of the invention;
Fig. 6 is left view structural representation of the invention.
In the figure, it is marked as 1, cabinet;2, front panel;3, top plate;4, centre panel;5, laser television;6, radiator fan;7, Link shaft;8, feed screw nut;9, the first bevel gear;10, the second bevel gear;11, bearing block;12, driving motor;13, mobile Block;14, metal plate;15, limiter;16, air inlet;17, air outlet;18, docking mechanism;19, ventilation opening;20, AC external power supply Socket;21, cable interface;22, RS232 interface of internet of things;23, contact;24, connecting rod;25, limiter ontology;26, first is horizontal Bar;27, rear panel;28, side panel;29, bolt;30, fixation hole;31, vertical bar;32, second crossbar;33, partition;34, it divulges information Chamber;35, bottom plate.
Specific embodiment
As shown in Figures 1 to 6, a kind of cabinet for TV for hiding laser television with open-and-close mechanism, including cabinet 1 and set In the laser television 5 in cabinet 1, cabinet 1 includes top plate 3, bottom plate 35 and is vertically connected with the two (top plate 3, bottom plate 35) Front panel 2, rear panel 27 and 2 side panel 28, front panel 2 and bottom plate 35 are hinged, under turn over i.e. openable, facilitate laser television 5 Installation and debugging.
As shown in Figures 2 and 3, the lower surface of top plate 3 be equipped with open-and-close mechanism, open-and-close mechanism be connected with can on top plate 3 table The centre panel 4 of face folding, open-and-close mechanism include link shaft 7 and the 2 parallel feed screw nuts vertical with linkage shaft 7 8, the both ends of link shaft 7 and feed screw nut 8 pass through the lower surface that bearing block 11 is fixed on top plate 3, the both ends for the shaft 7 that links Equipped with the first bevel gear 9, feed screw nut 8 is equipped with the second umbrella being meshed with the first bevel gear 9 with one end similar in linkage shaft 7 Gear 10, linkage shaft 7 are connected with driving motor 12, movable block 13 are cased on feed screw nut 8, movable block 13 is connected with L shape Metal plate 14, metal plate 14 is connected with the side of centre panel 4.Wherein driving motor 12 is stepper motor, can prevent clamp hand, is increased Add security fence.
As shown in Figures 2 and 3,3 lower surface of top plate is equipped with the limiter 15 positioned at 8 both ends of feed screw nut, sets on metal plate 14 There is the touching hook that can be touched with limiter 15, limiter 15 includes the limiter ontology 25 for being fixed on 3 lower surface of top plate, limiter sheet Body 25 is connected with flexible connecting rod 24, and the end of connecting rod 24 is equipped with contact 23, and top plate 3 is equipped with parallel with feed screw nut 8 Strip fixation hole 30, limiter ontology 25 with bolt 29 pass through fixation hole 30 be fixed.Touching hook includes parallel the One cross bar 26 and second crossbar 32, are vertically connected with vertical bar 31 between first crossbar 26 and second crossbar 32, first crossbar 26 and perpendicular The vertical angle of cut and second crossbar 32 angle of cut vertical with vertical bar 31 of bar 31 can be touched with 2 23 phases of contact respectively.Touch hook with One of limiter touch when, centre panel 4 in opened condition, touching hook and another limiter 15 touch when, centre panel 4 It is in closed state.
Such as Fig. 4 and Fig. 5, the invention also includes cooling mechanism, cooling mechanism includes radiator fan 6, air inlet 16 and outlet air Mouth 17, cabinet 1 is interior to be equipped with 2 partitions 33 parallel with side panel 28 and the two sides of cabinet 1 is divided into 2 vented cavities 34, every Radiator fan 6 is equipped on plate 33, the position that rear panel 27 is located at 2 vented cavities 34 is respectively equipped with air inlet 16 and air outlet 17, air inlet 16 is located at the heat dissipation inlet side of laser television 5, and air outlet 17 is located at the heat dissipation air side of laser television 5, such as Fig. 5 Arrows, external wind from air inlet 16 enter, then successively the heat dissipation inlet side through laser television and heat dissipation air side, finally It is flowed out from air outlet 17, wind flow is greater than the fan flow that laser television 5 is configured, and the hot wind that laser television 5 is discharged is whole Cabinet 1 is discharged.Air inlet 16 and air outlet 17 are mesh plate structure, keep beautiful while guaranteeing heat dissipation.Cooling mechanism Further include the ventilation opening 19 positioned at 27 center of rear panel, ventilation and heat can be reinforced.
As shown in fig. 6, side panel 28 is equipped with docking mechanism 18, docking mechanism 18 includes the AC being successively arranged from top to bottom External power supply socket 20, cable interface 21 and RS232 interface of internet of things 22, AC external power supply socket 20,21 and of cable interface RS232 interface of internet of things 22 is connected by medium line with laser television 5, convenient outer in the case where not taking out laser television 5 The peripheral equipments such as high definition device are connect, RS232 interface of internet of things 22 can allow laser television 5 to be docked to smart home system control association View.
The invention also includes control mechanism, control mechanism includes the remote controler being connected to each other and control mainboard, driving motor 12, Laser television 5, radiator fan 6, limiter 15 are electrical connected with control mainboard respectively.
The operation principle of the present invention is that: the switch of remote controler is pressed, driving motor 12 starts, and linkage shaft 7 rotates, and drives The feed screw nuts 8 of two sides rotates, and movable block 13 and metal plate 14 are moved along the direction of the panel 27 backward of feed screw nut 8, centre panel 4 The direction translation of panel 27 backward therewith, when touching hook touching limiter, signal feeds back to control mainboard, and control mainboard issues letter Number driving motor 12 is made to stop working, centre panel 4 fully opens at this time, and the camera lens of laser television 5 is exposed;Remote controler switch is beaten While opening, laser television 5, which is opened, to be played, and radiator fan 6 is actuated for radiating, and case is discharged in the heat that laser television 5 is generated Body.The switch of remote controler is pressed, laser television 5 is closed, and radiator fan 6 stops working, and driving motor 12 starts, and link shaft 7 It rotates backward, the feed screw nut 8 of two sides is driven to rotate backward, movable block 13 and metal plate 14 are along the side of 8 front panel 2 of feed screw nut To movement, the direction translation of the front panel 2 therewith of centre panel 4, when touching hook and touching another limiter 15, signal feeds back to control Mainboard processed, control mainboard, which issues signal, makes driving motor 12 stop working, and centre panel 4 completely closes at this time, hides laser electricity Depending on 5.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although referring to aforementioned reality Applying example, invention is explained in detail, for those skilled in the art, still can be to aforementioned each implementation Technical solution documented by example is modified or equivalent replacement of some of the technical features.It is all in essence of the invention Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of cabinet for TV for hiding laser television with open-and-close mechanism, which is characterized in that including cabinet and be placed in described The intracorporal laser television of case, the cabinet include top plate and bottom plate and the front panel being vertically connected with the two, rear panel and 2 The lower surface of side panel, the top plate is equipped with open-and-close mechanism, and the open-and-close mechanism, which is connected with, to be opened and closed in the cover top surface Centre panel, the open-and-close mechanism include link shaft and with the vertical 2 parallel feed screw nuts of the linkage shaft, The both ends of the linkage shaft are equipped with the first bevel gear, and the feed screw nut is equipped with one end similar in the linkage shaft and institute The second bevel gear that the first bevel gear is meshed is stated, the linkage shaft is connected with driving motor, covers on the feed screw nut There is movable block, the movable block is connected with metal plate, and the metal plate is connected with the side of the centre panel.
2. a kind of cabinet for TV for hiding laser television with open-and-close mechanism according to claim 1, which is characterized in that It further include cooling mechanism, the cooling mechanism includes radiator fan, air inlet and air outlet, is equipped with 2 and institute in the cabinet It states the parallel partition of side panel and the two sides of the cabinet is divided into 2 vented cavities, be equipped with the heat dissipation on the partition Fan, the position that the rear panel is located at 2 vented cavities are respectively equipped with the air inlet and the air outlet.
3. a kind of cabinet for TV for hiding laser television with open-and-close mechanism according to claim 2, which is characterized in that It further include control mechanism, the control mechanism includes the remote controler being connected to each other and control mainboard, the driving motor, the laser TV, the radiator fan are electrical connected with the control mainboard respectively.
4. a kind of cabinet for TV for hiding laser television with open-and-close mechanism according to claim 2, which is characterized in that The air inlet and the air outlet are mesh plate structure.
5. a kind of cabinet for TV for hiding laser television with open-and-close mechanism according to claim 2, which is characterized in that The cooling mechanism further includes the ventilation opening positioned at the rear panel center.
6. a kind of cabinet for TV for hiding laser television with open-and-close mechanism according to claim 3, which is characterized in that The top plate lower surface is equipped with the limiter positioned at the feed screw nut both ends, the limiter and the control mainboard electrical property phase Even, the metal plate is equipped with the touching hook that can be touched with the limiter, when the touching hook and one of them described limiter are touched, In opened condition, when the touching hook and another described limiter are touched, the centre panel is in closing shape for the centre panel State.
7. a kind of cabinet for TV for hiding laser television with open-and-close mechanism according to claim 6, which is characterized in that The limiter includes the limiter ontology for being fixed on the top plate lower surface, and the limiter ontology is connected with flexible The end of connecting rod, the connecting rod is equipped with contact.
8. a kind of cabinet for TV for hiding laser television with open-and-close mechanism according to claim 7, which is characterized in that The touching hook includes parallel first crossbar and second crossbar, is vertically connected between the first crossbar and the second crossbar perpendicular Bar, the vertical angle of cut and the second crossbar angle of cut vertical with the vertical bar can be distinguished the first crossbar with the vertical bar It is mutually touched with 2 contacts.
9. a kind of cabinet for TV for hiding laser television with open-and-close mechanism according to claim 1, which is characterized in that The side panel is equipped with docking mechanism, and the docking mechanism includes AC external power supply socket, the net being successively arranged from top to bottom Line interface and RS232 interface of internet of things, during the AC external power supply socket, cable interface and RS232 interface of internet of things pass through Between line be connected with the laser television.
10. a kind of cabinet for TV for hiding laser television with open-and-close mechanism according to claim 1, feature exist In the both ends of the linkage shaft and the feed screw nut pass through the lower surface that bearing block is fixed on the top plate.
CN201811215750.5A 2018-10-18 2018-10-18 A kind of cabinet for TV for hiding laser television with open-and-close mechanism Pending CN109106103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811215750.5A CN109106103A (en) 2018-10-18 2018-10-18 A kind of cabinet for TV for hiding laser television with open-and-close mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811215750.5A CN109106103A (en) 2018-10-18 2018-10-18 A kind of cabinet for TV for hiding laser television with open-and-close mechanism

Publications (1)

Publication Number Publication Date
CN109106103A true CN109106103A (en) 2019-01-01

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Application Number Title Priority Date Filing Date
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CN (1) CN109106103A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110572599A (en) * 2019-10-08 2019-12-13 江苏舜合物联网科技有限公司 electric panel opening mechanism for curled hidden laser television all-in-one machine
CN110572629A (en) * 2019-10-08 2019-12-13 江苏舜合物联网科技有限公司 Control method of curled hidden laser television all-in-one machine
CN110973867A (en) * 2019-12-27 2020-04-10 海门星晟源家具科技有限公司 Laser television cabinet
CN113109987A (en) * 2021-05-17 2021-07-13 青岛海信激光显示股份有限公司 Laser projection equipment, liftable screen and laser television

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080116771A1 (en) * 2006-10-06 2008-05-22 Bush Industries, Inc. Cabinet With Accessory In Top Panel And With Top Panel Lift Mechanism
CN101972083A (en) * 2010-09-08 2011-02-16 周金全 Television cabinet with lifting frame
CN107149314A (en) * 2017-06-28 2017-09-12 上海舜合智能科技有限公司 A kind of opening-closing structure and the laser television rack provided with opening-closing structure
CN107802109A (en) * 2017-10-11 2018-03-16 顾家家居股份有限公司 It is a kind of that there is the cabinet for TV for hiding video/audio function
CN209474098U (en) * 2018-10-18 2019-10-11 江苏舜合物联网科技有限公司 A kind of cabinet for TV for hiding laser television with open-and-close mechanism

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080116771A1 (en) * 2006-10-06 2008-05-22 Bush Industries, Inc. Cabinet With Accessory In Top Panel And With Top Panel Lift Mechanism
CN101972083A (en) * 2010-09-08 2011-02-16 周金全 Television cabinet with lifting frame
CN107149314A (en) * 2017-06-28 2017-09-12 上海舜合智能科技有限公司 A kind of opening-closing structure and the laser television rack provided with opening-closing structure
CN107802109A (en) * 2017-10-11 2018-03-16 顾家家居股份有限公司 It is a kind of that there is the cabinet for TV for hiding video/audio function
CN209474098U (en) * 2018-10-18 2019-10-11 江苏舜合物联网科技有限公司 A kind of cabinet for TV for hiding laser television with open-and-close mechanism

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110572599A (en) * 2019-10-08 2019-12-13 江苏舜合物联网科技有限公司 electric panel opening mechanism for curled hidden laser television all-in-one machine
CN110572629A (en) * 2019-10-08 2019-12-13 江苏舜合物联网科技有限公司 Control method of curled hidden laser television all-in-one machine
CN110572629B (en) * 2019-10-08 2021-09-07 江苏舜合物联网科技有限公司 Control method of curled hidden laser television all-in-one machine
CN110973867A (en) * 2019-12-27 2020-04-10 海门星晟源家具科技有限公司 Laser television cabinet
CN110973867B (en) * 2019-12-27 2021-06-25 海门星晟源家具科技有限公司 Laser television cabinet
CN113109987A (en) * 2021-05-17 2021-07-13 青岛海信激光显示股份有限公司 Laser projection equipment, liftable screen and laser television
CN113109987B (en) * 2021-05-17 2022-09-23 青岛海信激光显示股份有限公司 Laser projection equipment, liftable screen and laser television

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