CN117135892B - Liquid crystal display screen capable of effectively radiating heat and backlight module thereof - Google Patents
Liquid crystal display screen capable of effectively radiating heat and backlight module thereof Download PDFInfo
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- CN117135892B CN117135892B CN202311352622.6A CN202311352622A CN117135892B CN 117135892 B CN117135892 B CN 117135892B CN 202311352622 A CN202311352622 A CN 202311352622A CN 117135892 B CN117135892 B CN 117135892B
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- shell
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 42
- 238000007790 scraping Methods 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims description 14
- 238000009792 diffusion process Methods 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 4
- 230000007306 turnover Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 6
- 238000007664 blowing Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 3
- VQLYBLABXAHUDN-UHFFFAOYSA-N bis(4-fluorophenyl)-methyl-(1,2,4-triazol-1-ylmethyl)silane;methyl n-(1h-benzimidazol-2-yl)carbamate Chemical compound C1=CC=C2NC(NC(=O)OC)=NC2=C1.C=1C=C(F)C=CC=1[Si](C=1C=CC(F)=CC=1)(C)CN1C=NC=N1 VQLYBLABXAHUDN-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
- H05K7/20972—Forced ventilation, e.g. on heat dissipaters coupled to components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/35—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Air-Flow Control Members (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The invention discloses a liquid crystal display screen capable of effectively radiating and a backlight module thereof, which comprise a shell, wherein one side of the shell is fixedly connected with a screen, two sides of an inner cavity of the shell are fixedly connected with symmetrical mounting blocks, the upper part of one side of the outer wall of the shell, which is far away from the screen, is provided with a vent hole, the middle part of the inner cavity of the shell is fixedly connected with a radiating fin, one side of the mounting block, which is close to the radiating fin, is provided with a turnover mechanism, the upper end of the mounting block is provided with a driving piece for driving the turnover mechanism to vertically move, the middle part of the mounting block is elastically and slidably connected with a driven plate, and the symmetrical driven plates are fixedly connected with a movable plate together. According to the invention, the display is radiated by blowing the air flow to the radiating fins, when the notch of the first gear is close to the second gear, the shell moves downwards under the action of the elastic force and drives the scraping plate to clean the radiating fins, so that dust on the radiating fins is scraped into the dust collecting box, and in the scraping process, no air flow flows in the inner cavity of the shell.
Description
Technical Field
The invention relates to the technical field of liquid crystal display screens, in particular to a liquid crystal display screen capable of effectively radiating heat and a backlight module thereof.
Background
The LCD is one kind of flat panel display, and is used in computer, TV and other electronic equipment.
As disclosed in chinese patent publication No. CN218037594U, a heat dissipating liquid crystal display screen includes a liquid crystal screen, a frame is fixedly mounted on a peripheral side surface of the liquid crystal screen, a fixing plate is fixedly mounted on a rear end surface of the liquid crystal screen, the frame and the fixing plate are both mounted on a surface of a back frame, a PCB board and an air inlet pipe are fixedly mounted on the rear end surface of the fixing plate, a heat conducting plate is covered on the rear end surface of the PCB board, one end of the heat conducting plate is inserted into the air inlet pipe, a turbofan is fixedly mounted on the rear end surface of the air inlet pipe, the turbofan is provided with an air outlet and an ash discharge port, the air outlet is communicated with an exhaust pipe, the ash discharge port is communicated with an ash discharge pipe, and the peripheral side surface of the ash discharge pipe is slidably connected with an ash collecting box.
In this scheme, get rid of the dust into the album ash box through fan pivoted centrifugal force, and the air current velocity of flow around the fan when rotating is faster, and the local pressure that the velocity of flow is fast is little, even some dust flies to album ash box under centrifugal force effect, after losing centrifugal force, can get back to fan department again under the effect of pressure likely to adhere to on the flabellum.
Disclosure of Invention
The invention aims to provide a liquid crystal display screen capable of effectively radiating heat and a backlight module thereof so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the utility model provides a can effective radiating liquid crystal display, includes the casing, casing one side fixedly connected with screen, casing inner chamber both sides fixedly connected with symmetry's installation piece, the ventilation hole has been seted up on one side upper portion that the screen was kept away from to the casing outer wall, casing inner chamber middle part fixedly connected with fin, one side that the installation piece is close to the fin is provided with tilting mechanism, the installation piece upper end is provided with the driving piece that drives tilting mechanism vertical movement, installation piece middle part elasticity sliding connection has the driven plate, the symmetry thereby common fixedly connected with movable plate between the driven plate, works as tilting mechanism moves down, thereby the movable plate is close to the fin and extrudes the thermal cavity of casing inner chamber from the ventilation hole, works as tilting mechanism moves upward, thereby can drive the movable plate and keep away from the fin and inhale in the casing with the outer air of casing.
As a further scheme of the invention: the driving piece comprises a first gear, the first gear rotates and connects in the upper end middle part of installation piece, one side fixedly connected with driving motor that the first gear is close to the screen, one side that the first gear is close to the fin is provided with the second gear, second gear and first gear intermeshing, the one end middle part fixedly connected with steering column that the second gear is close to the screen, steering column and second gear are all rotated and are connected in the installation piece upper end, the winding of steering column outer wall has the rope, the one end and tilting mechanism fixed connection of steering column are kept away from to the rope.
As a further scheme of the invention: the diameter of the first gear is larger than that of the second gear, and the length of the cambered surface of the non-meshed part between the first gear and the second gear is larger than the circumference of the second gear.
As a further scheme of the invention: the turnover mechanism comprises a shell, a sliding groove is formed in one side, close to the radiating fins, of the mounting block, the shell is elastically and slidably connected in the sliding groove, the upper end of the shell is fixedly connected with a rope, one side, close to the radiating fins, of the inner cavity of the shell is rotationally connected with a first movable column, the first movable columns are symmetrically fixedly connected with scraping plates together, one side, far away from the scraping plates, of the first movable column is slidably connected with a supporting rod, a second movable column is arranged on the outer wall of the supporting rod in a sliding sleeve mode, and the second movable column is movably connected with the inner cavity of the shell.
As a further scheme of the invention: two annular grooves are formed in the outer wall of one side, close to the first movable column, of the outer wall of the second movable column, an elastic pin is arranged above the annular groove, far away from the first movable column, a third gear is arranged on one side, far away from the scraping plate, of the outer shell in a fitting mode, the middle of the third gear is fixedly connected with the outer wall of the second movable column, racks are fixedly connected to the upper side and the lower side of the side wall of an inner cavity of the sliding groove, and the racks are located below one side, close to the scraping plate, of the outer shell.
As a further scheme of the invention: the driven key is arranged between the third gear and the ring groove far away from the first movable column and consists of a circular ring and a circular rod, the circular ring is rotationally connected with the second movable column, the circular rod penetrates through the side wall of the shell, and a transverse groove for the circular rod to horizontally move is formed in the side wall of the shell.
As a further scheme of the invention: the inner chamber of spout is close to the guide way of round bar horizontal migration is provided with one side of drive round bar, the guide way comprises symmetrical vertical groove and symmetrical chute, vertical groove and chute intercommunication each other, lie in the below the top place horizontal plane of chute is less than the plane that the terminal surface was located under the rack, lie in the top the bottom place horizontal plane of chute is higher than the plane that the rack up end was located.
As a further scheme of the invention: the driven plate is close to one side of fin and has offered the driven groove that the cooperation second movable column used, the one end sliding connection that the first movable column was kept away from to the second movable column is in driven groove, driven groove includes vertical groove, horizontal groove and inclined drive groove, the drive groove inclines towards screen place direction, the bottom and the horizontal groove of vertical groove are linked together, the drive groove then keeps away from the one end and the upper portion of vertical groove with the horizontal groove, the position degree of depth that the vertical groove is close to the horizontal groove deepens gradually until the degree of depth same with the horizontal groove, the degree of depth of horizontal groove is the same with the degree of depth of drive groove.
As a further scheme of the invention: the bottom of the inner cavity of the shell is elastically clamped with a dust collecting box, the upper end of the dust collecting box is provided with a cover plate, the cover plate is in sliding fit with the upper end of the dust collecting box, one end of the cover plate, which is far away from the dust collecting box, is elastically connected with the side wall, which is far away from the screen, of the inner cavity of the shell, the upper end of the cover plate is in fit with one side, which is close to the radiating fin, of one end of the cover plate, two sides of the cover plate are symmetrically provided with clamping plates, one side, which is close to the radiating fin, of the mounting block is fixedly connected with a symmetrical L-shaped plate, the L-shaped plate is far away from a clamping key which is elastically and slidably connected with the lower part of one end of the mounting block, a first inclined plane is formed in one side, close to the moving plate, of the lower end of the clamping key, a second inclined plane is formed in one side, far away from the moving plate, of the clamping plate, a clamping hole matched with the clamping key in size is formed in the upper end of the clamping plate, a contact block is slidably connected with the top of the sliding groove, and the top of the contact block is fixedly connected with the upper end of the clamping key through a connecting rope.
The backlight module comprises a backlight assembly, wherein the backlight assembly is arranged between a screen and a radiating fin, the backlight assembly comprises a back plate, the back plate is fixedly connected with the radiating fin, lamp strips are fixedly connected to the periphery of the back plate, and reflecting paper, a light guide plate, a light enhancement piece and a diffusion piece are sequentially arranged on one side, close to a plane, of the back plate.
Compared with the prior art, the invention has the beneficial effects that:
the second gear is driven by the first gear to rotate so as to drive the rope to wind on the rotary column to drive the shell to rise, and then the driven plate and the movable plate are driven to move together through the second movable column to drive the driving groove, and then the air is sucked into the inner cavity of the shell through the vent hole, the display is radiated through the air flow to the radiating fin, when the gap of the first gear is close to the second gear, the shell moves downwards under the action of elastic force and drives the scraping plate to clean the radiating fin, thereby dust on the radiating fin is scraped into the dust collecting box, the radiating effect is improved, and in the scraping process, the inner cavity of the shell does not have the air flow, namely the dust can not fly around, and after the scraping is completed, the scraping plate rotates downwards by 90 degrees so as not to block the air flow blown to the radiating plate, and the movable plate is close to the radiating plate to blow out the dust collecting box, so that the dust is prevented from being blown off by the air flow, the designed rack can enable the scraping plate to move downwards or upwards in the process, the dust can be overturned only once, and the design of fast air is blown slowly, dust can be accumulated on the radiating fin, and the dust can not be blown back again because the dust sucked in the process of large.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of the installation position of the driving member in the present invention.
FIG. 3 is a schematic diagram of a card in the present invention.
Fig. 4 is a schematic view of the structure of the B region in fig. 2 according to the present invention.
Fig. 5 is a schematic structural view of the region a in fig. 3 according to the present invention.
Fig. 6 is a schematic structural view of the turnover mechanism in the present invention.
Fig. 7 is a schematic structural view of a strut in the present invention.
Fig. 8 is a schematic structural view of an inner cavity of a chute according to the present invention.
Fig. 9 is a schematic structural view of a driven plate in the present invention.
Fig. 10 is a schematic view of the structure of the inner cavity of the housing in the present invention.
In the figure: 1. a housing; 2. a screen; 3. a vent hole; 4. a backlight assembly; 5. a heat sink; 6. a mounting block; 7. a moving plate; 8. a chute; 9. a turnover mechanism; 91. a housing; 92. a first movable column; 93. a second movable column; 94. a third gear; 95. a rack; 96. an elastic pin; 97. a ring groove; 98. a driven key; 99. a guide groove; 10. a scraper; 11. A clamping key; 12. a clamping plate; 13. a cover plate; 14. a driven plate; 141. a driven groove; 15. a driving member; 151. a first gear; 152. a second gear; 153. a rotating column; 16. a rope; 17. a dust collecting box.
Detailed Description
Referring to fig. 1-3, in an embodiment of the invention, a liquid crystal display screen capable of effectively dissipating heat includes a housing 1, a screen 2 is fixedly connected to one side of the housing 1, symmetrical mounting blocks 6 are fixedly connected to two sides of an inner cavity of the housing 1, a vent hole 3 is formed in an upper portion of one side of an outer wall of the housing 1, which is far away from the screen 2, a heat sink 5 is fixedly connected to a middle portion of the inner cavity of the housing 1, a turnover mechanism 9 is arranged on one side of the symmetrical mounting blocks 6, which is close to the heat sink 5, a driving member 15 for driving the turnover mechanism 9 to vertically move is arranged at an upper end of the mounting blocks 6, a driven plate 14 is elastically and slidably connected to the middle portion of the mounting blocks 6, and a moving plate 7 is fixedly connected between the symmetrical driven plates 14.
Referring to fig. 4, the driving member 15 includes a first gear 151, the first gear 151 is an incomplete gear, the first gear 151 is rotatably connected to the middle of the upper end of the mounting block 6, a driving motor is fixedly connected to a side of the first gear 151, which is close to the screen 2, a second gear 152 is disposed on a side of the first gear 151, which is close to the cooling fin 5, the second gear 152 is meshed with the first gear 151, a rotating post 153 is fixedly connected to the middle of a side of the second gear 152, which is close to the screen 2, the rotating post 153 and the second gear 152 are both rotatably connected to the upper end of the mounting block 6, a rope 16 is wound on an outer wall of the rotating post 153, and an end, which is far from the rotating post 153, of the rope 16 is fixedly connected to the turnover mechanism 9, that is, when the first gear 151 rotates, the second gear 152 is driven to rotate together, thereby driving the rotating post 153 to rotate and continuously winding the rope 16 on an outer wall of the rotating post 153, and driving the turnover mechanism 9 to move upwards.
Referring to fig. 5-7, the turnover mechanism 9 includes a housing 91, a chute 8 is provided on one side of the mounting block 6 near the heat sink 5, the housing 91 is elastically slidably connected in the chute 8, i.e. the housing 91 is driven by the rope 16 to move upwards, the downward movement of the housing 91 is caused by elastic force, the length of the arc surface of the non-meshed portion between the first gear 151 and the second gear 152 is greater than the perimeter of the second gear 152, i.e. when the notch of the first gear 151 and the second gear 152 are located on the same plane, the first gear 151 loses the ability of driving the second gear 152 to rotate, and under the action of elastic force, the housing 91 can quickly descend and drive the second gear 152 to reversely rotate through the rope 16, one side of the inner cavity of the housing 91 near the heat sink 5 is rotationally connected with the first movable columns 92, the symmetrical first movable columns 92 are fixedly connected with the scrapers 10 together, the side of the first movable column 92 far away from the scraping plate 10 is slidably connected with a supporting rod, a second movable column 93 is sleeved on the outer wall of the supporting rod in a sliding manner, the second movable column 93 is movably connected with the inner cavity of the shell 91, namely, the second movable column 93 can horizontally move and rotate, two annular grooves 97 are formed on the outer wall of one side of the second movable column 93 close to the first movable column 92, wherein an elastic pin 96 is arranged above the annular groove 97 far away from the first movable column 92, the elastic pin 96 is axially slidably connected with the annular groove 97, namely, the elastic pin 96 does not influence the rotation of the second movable column 93 when the second movable column 93 rotates, the horizontal movement of the second movable column 93 can be limited, namely, the second movable column 93 is always clung to the first movable column 92 when no external force acts, a third gear 94 is clung to one side of the shell 91 far away from the scraping plate 10, the middle part of the third gear 94 is fixedly connected with the outer wall of the second movable column 93, the upper and lower sides of the inner cavity side wall of the chute 8 are fixedly connected with racks 95, wherein the vertical plane of the racks 95 positioned below is closer to the scraping plate 10 than the vertical plane of the racks 95 positioned above, by staggering the racks 95 driving the second gear 152 to rotate, the third gear 94 can only be driven by the racks 95 positioned below in the descending process, namely the scraping plate 10 only rotates clockwise, when the third gear 94 ascends, only is driven by the racks 95 positioned above, namely the scraping plate 10 only rotates anticlockwise, when the third gear 94 is close to the racks 95, the racks 95 cannot move to drive the third gear 94 to rotate, the third gear 94 rotates to drive the second movable column 93 to rotate, the second movable column 93 drives the first movable column 92 to rotate through the columns, and therefore the scraping plate 10 is driven to rotate, when the third gear 94 is separated from the racks 95, the third gear 94 rotates clockwise by 90 degrees, namely the scraping plate 10 rotates clockwise, and then rotates from a horizontal state to a vertical state, when the racks 95 positioned below the top end of the racks 95 are lower than the plane 5, namely the scraping plate 5 is completely separated from the bottom 5, and all the cooling fins can be removed from the cooling fins are completely, and therefore all cooling fins can be removed from the cooling fins 5.
A driven key 98 is arranged between the third gear 94 and the ring groove 97 far away from the first movable column 92, the driven key 98 is composed of a circular ring and a circular rod, the circular ring is rotationally connected with the second movable column 93, the circular rod penetrates through the side wall of the shell 91, a transverse groove for horizontally moving the circular rod is arranged on the side wall of the shell 91, the circular rod is used for driving the second movable column 93 to move, namely, when the circular rod receives force in the horizontal direction, the circular rod drives the second movable column 93 to horizontally move away from or close to the first movable column 92, a guide groove 99 for driving the circular rod to horizontally move is arranged on one side of the inner cavity of the chute 8 close to the circular rod, the guide groove 99 is composed of symmetrical vertical grooves and symmetrical chute, the vertical grooves and the chute are mutually communicated, the horizontal plane of the top end of the chute positioned below is lower than the plane of the lower end face of the rack 95 positioned below, the horizontal plane of the bottom end of the chute above is higher than the plane of the upper end face of the rack 95 above, that is, after the second movable column 93 rotates 90 degrees, the round bar enters the chute below from the vertical groove near the scraper 10, the chute drives the second movable column 93 away from the scraper 10 by driving the round bar away from the scraper 10, the elastic pin 96 is separated from the annular groove 97 away from the scraper 10 and moves into the annular groove 97 near the scraper 10 relative to the second movable column 93, so that the second movable column 93 is limited in the horizontal direction again, the round bar also moves to the junction of the chute below and the vertical groove far from the scraper 10, so that when the casing 91 rises, the round bar also rises along the vertical groove far from the scraper 10, and when the casing 91 rises, the third gear 94 approaches the rack 95 above the inner cavity of the chute 8, it drives the third gear 94 to rotate counterclockwise, so that the scraper 10 is changed from the vertical state to the horizontal state, and the round bar makes the second movable column 93 cling to the first movable column 92 again through the chute positioned above.
Referring to fig. 8-9, a driven slot 141 is formed on one side of the driven plate 14 near the heat sink 5, which is matched with the second movable column 93, one end of the second movable column 93 far from the first movable column 92 is slidably connected in the driven slot 141, the driven slot 141 comprises a vertical slot, a horizontal slot and an inclined driving slot, the driving slot is inclined towards the direction of the screen 2, the bottom of the vertical slot is communicated with the horizontal slot, the driving slot communicates one end of the horizontal slot far from the vertical slot with the upper part of the vertical slot, namely, when the second movable column 93 moves downwards along the vertical slot, the driven plate 14 keeps a static state, when the second movable column 93 moves into the horizontal slot, the driven plate 14 drives the movable plate 7 to be fast near the heat sink 5 under the action of elastic force due to the limit action of the lost second movable column 93, thereby fast exhausting the hot air in the inner cavity of the shell 1, the fast exhausting can blow away some dust accumulated in the vent hole 3, so that dust entering the inner cavity of the shell 1 during air suction is reduced, as the second movable rod moves to the bottom of the guide groove 99 and gradually moves away from the first movable column 92, the depth of the part of the vertical groove close to the horizontal groove gradually deepens until the depth of the vertical groove is the same as that of the horizontal groove, the depth of the horizontal groove is the same as that of the driving groove, when the second movable column 93 relatively moves to the joint of the driving groove and the horizontal groove, at the moment, the notch part of the first gear 151 moves away from the second gear 152, namely the first gear 151 is opened again to drive the second gear 152 to rotate, namely the shell 91 is opened upwards, the upwards moved shell 91 drives the second movable column 93 to move upwards together, and the driven plate 14 is continuously far away from the radiating fin 5 through the driving groove, so that air suction is carried out to the inner cavity of the shell 1 through the vent hole 3, relative to the air exhaust process, the time of suction is longer than the time of discharge, so that the sucked air can fully contact with the cooling fins 5 and the suction of dust can be reduced, the flow speed of the air flow around the vent holes 3 is smaller than that of the air discharged during slow suction, most of the dust blown away during discharge can be far away from the vent holes 3 and subside downwards, the dust can not be sucked into the vent holes 3 again along with the air flow during suction, even enter the inner cavity of the shell 1, the scraping plate 10 keeps vertical state during suction and can not block the flow of the air flow, if the scraping plate 10 can not rotate but always keeps horizontal state to move up and down, the air flow can be blocked by the scraping plate 10 when the air flow blows to the cooling fins 5 during suction, so that the part of the cooling fins 5 below the scraping plate 10 can not directly contact with the air flow, and the heat dissipation effect is poor, the above situation can not be generated when the scraper 10 is in a vertical state, when the second movable rod moves to the position of the driving groove close to the vertical groove, the third gear 94 contacts with the rack 95 positioned above, so that the scraper 10 rotates anticlockwise to return to a horizontal state, after the scraper 10 returns to the horizontal state, the second movable rod 93 starts to approach the first movable column 92, and when the scraper returns to the vertical groove, the second movable column 93 is clung to the first movable column 92 again, the plane of the lower end of the rack 95 positioned above is higher than the plane of the top end of the radiating fin 5, namely, the scraper 10 starts to rotate anticlockwise to a horizontal position after exceeding the top end of the radiating fin 5, after the second movable column 93 returns to the vertical groove again, the notch of the first gear 151 is close to the second gear 152 again, the scraper 10 also moves downwards along with the shell 91 again, so that the radiating fin 5 can be continuously cleaned, and discharging the hot air and sucking the outside air, thereby completing the heat dissipation of the display.
Referring to fig. 10, when the scraper 10 cleans the heat sink 5, the second movable column 93 is located in the vertical groove, i.e. the driven plate 14 is in a static state, at this time, no air flows in the inner cavity of the housing 1, i.e. when the scraper 10 scrapes the dust of the heat sink 5, the scraped dust naturally falls down and cannot be blown off by the air flow, the falling dust falls into the dust box 17 elastically clamped with the bottom of the inner cavity of the housing 1, the upper end of the dust box 17 is provided with the cover plate 13, the cover plate 13 is slidingly attached to the upper end of the dust box 17, one end of the cover plate 13 far from the dust box 17 is elastically slidingly connected with the side wall of the inner cavity of the housing 1 far from the screen 2, the upper end of the cover plate 13 is attached to one side of the end plate near the heat sink 5, i.e. when the moving plate 7 approaches the heat sink 5, the cover plate 13 is driven to be synchronously close to the heat sink 5 and the dust box 17 is blocked, the two sides of the cover plate 13 are symmetrically provided with the clamping plates 12, the mounting block 6 is fixedly connected with a symmetrical L-shaped plate on one side close to the radiating fin 5, a clamping key 11 is elastically and slidably connected at the lower part of one end of the L-shaped plate, which is far away from the mounting block 6, a first inclined plane is arranged at one side, which is close to the moving plate 7, of the lower end of the clamping key 11, the first inclined plane is inclined towards the direction of the screen 2, a second inclined plane is arranged at one side, which is far away from the moving plate 7, of the clamping plate 12, the second inclined plane is inclined towards the direction of the screen 2, namely, when the clamping plate 12 contacts with the clamping key 11, the clamping key 11 is jacked up through the contact of the second inclined plane with the first inclined plane, and a clamping hole matched with the clamping key 11 in size is formed at the upper end of the clamping plate 12, when the clamping key 11 relatively moves into the clamping hole, the clamping key 11 rebounds and limits the clamping plate 12, so that the cover plate 13 is limited, namely, in the air suction process, the cover plate 13 always plugs the dust collecting box 17, so that the air flow can not enter the dust collecting box 17, namely dust in the dust collecting box 17 can not fly everywhere because of blowing of the air flow, thereby the radiating fin 5 is secondary pollution, and the radiating effect is poor, sliding connection is arranged at the top of the sliding chute 8, contact blocks are fixedly connected between the top ends of the contact blocks and the upper ends of the clamping keys 11 through connecting ropes, the connecting ropes penetrate through L-shaped plates and the inside of the installation blocks 6 to connect the contact blocks with the clamping keys 11, when the shell 91 moves to the top of the sliding chute 8, the contact blocks push upwards, the clamping keys 11 can be pulled upwards through the connecting ropes, the contact blocks are separated from the clamping plates 12 so as to contact the limit of the cover plate 13, the cover plate 13 can be far away from the radiating fin 5 under the action of elastic force, and thus the blocking of the dust collecting box 17 is relieved, and when the dust collecting box 17 is used, only the dust collecting box 17 is cleaned.
The utility model provides a backlight unit, including backlight unit 4 setting between screen 2 and fin 5, mainly used provides the light source for the plane, backlight unit 4 includes the backplate, backplate and fin 5 fixed connection, fixedly connected with lamp strip all around of backplate, the backplate is close to planar one side and is equipped with the reflection paper in proper order, the light guide plate, add lustre to piece and diffusion piece, the light source at lamp strip shines on the light guide plate, make the light that backplate edge sent can cover whole backplate, and the reflection paper sets up between light guide plate and backplate, can be with the light re-reflection that shines on the backplate from the light guide plate can lead the light guide plate on, make the light source can concentrate on screen 2, and the light guide plate is kept away from one side of apron 13 and is equipped with the enhancement piece and diffusion piece in proper order, the luminance that adds lustre to piece is used the enhancement light source and diffusion piece then can make the light source more even shine on screen 2, and these are very mature prior art, only need install in proper order and place in proper order in the assembly process can accomplish the installation.
Claims (3)
1. The utility model provides a liquid crystal display that can effectively dispel heat, which comprises a housin, its characterized in that, casing one side fixedly connected with screen, thereby casing inner chamber both sides fixedly connected with symmetry's installation piece, the ventilation hole has been seted up to one side upper portion that the screen was kept away from to the casing outer wall, casing inner chamber middle part fixedly connected with fin, one side that the installation piece is close to the fin is provided with tilting mechanism, the installation piece upper end is provided with the driving piece that drives tilting mechanism vertical movement, installation piece middle part elastic sliding connection has the driven plate, the symmetry thereby be connected with the movable plate jointly between the driven plate, when tilting mechanism moves down, thereby the movable plate is close to the fin extrudees the ventilation hole with the thermal cavity of casing inner chamber, when tilting mechanism moves up, thereby can drive the movable plate and inhale the casing outside the air, the driving piece includes first gear, first gear rotates to be connected in the upper end middle part of installation piece, one side that the first gear is close to the screen fixedly connected with driving motor, one side that the first gear is close to the fin is provided with the second gear, second gear and tilting mechanism have a driven plate, second gear and a big diameter pillar, the diameter of a big diameter pillar is connected with between the second gear and the fixed cylinder is not connected with the second gear, the second gear is close to the second gear, the diameter pillar is connected with the second end, and the big pillar is connected with the diameter pillar is rotated to the second end, and is fixed to the diameter pillar is connected with the big pillar, the shell is elastically and slidingly connected in the sliding groove, the upper end of the shell is fixedly connected with the rope, one side of the inner cavity of the shell, which is close to the radiating fins, is rotationally connected with a first movable column, the first movable columns are symmetrically connected with scraping plates in a fixed way, one side of the first movable column, which is far away from the scraping plates, is slidingly connected with a supporting rod, a second movable column is slidingly sleeved on the outer wall of the supporting rod, the second movable column is movably connected with the inner cavity of the shell, two annular grooves are formed in the outer wall of one side, which is close to the first movable column, of the outer wall of the second movable column, an elastic pin is arranged above the annular groove, which is far away from the first movable column, a third gear is attached to one side, which is far away from the scraping plates, of the middle part of the third gear is fixedly connected with the outer wall of the second movable column, racks are fixedly connected on the upper side and the lower side of the side wall of the inner cavity of the sliding groove, the rack positioned below is positioned at one side close to the scraping plate, a driven key is arranged between the third gear and a ring groove far away from the first movable column, the driven key consists of a circular ring and a circular rod, the circular ring is rotationally connected with the second movable column, the circular rod penetrates through the side wall of the shell, a transverse groove for horizontally moving the circular rod is formed in the side wall of the shell, a guide groove for driving the circular rod to horizontally move is formed in one side, close to the circular rod, of an inner cavity of the chute, the guide groove consists of a symmetrical vertical groove and a symmetrical chute, the vertical groove and the chute are mutually communicated, the horizontal plane of the top end of the chute positioned below is lower than the plane of the lower end face of the rack, the horizontal plane of the bottom end of the chute positioned above is higher than the plane of the upper end face of the rack, a driven groove matched with the second movable column is formed in one side, close to the radiating fin, of the driven plate is matched with the second movable column, the one end sliding connection in the driven inslot of first movable column is kept away from to the second movable column, the driven inslot includes vertical groove, horizontal groove and inclined drive groove, the drive groove inclines towards screen place direction, the bottom in vertical groove is linked together with the horizontal groove, the drive groove then keeps away from the one end in vertical groove with the horizontal groove and communicates on the upper portion, the position degree of depth that the vertical groove is close to the horizontal groove deepens gradually until the degree of depth same with the horizontal groove, the degree of depth in horizontal groove is the same with the degree of depth in drive groove.
2. The liquid crystal display of claim 1, wherein the dust box is elastically clamped at the bottom of the inner cavity of the shell, the upper end of the dust box is provided with a cover plate, the cover plate is in sliding fit with the upper end of the dust box, one end of the cover plate, which is far away from the dust box, is elastically and slidably connected with the side wall, which is far away from the screen, of the inner cavity of the shell, one side, which is close to the radiating fin, of the cover plate is fitted with one side, which is close to the radiating fin, of the cover plate, clamping plates are symmetrically arranged, clamping keys are fixedly connected with symmetrical L-shaped plates, one end, which is far away from the mounting blocks, of the L-shaped plates is elastically and slidably connected with one side, which is close to the moving plates, of the lower ends of the clamping keys are provided with first inclined surfaces, one side, which is far away from the moving plates, of the clamping plates are provided with second inclined surfaces, clamping holes, which are matched with the clamping key sizes, of the top of the sliding grooves are slidably connected with contact blocks, and the top ends of the contact blocks are fixedly connected with the upper ends of the clamping keys through connecting ropes.
3. A backlight module, characterized in that the backlight module comprises the liquid crystal display screen capable of effectively radiating heat according to any one of claims 1-2, and further comprises a backlight assembly, wherein the backlight assembly is arranged between a screen and a radiating fin, the backlight assembly comprises a back plate, the back plate is fixedly connected with the radiating fin, lamp strips are fixedly connected to the periphery of the back plate, and one side, close to a plane, of the back plate is sequentially provided with reflecting paper, a light guide plate, a light enhancement sheet and a diffusion sheet.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311352622.6A CN117135892B (en) | 2023-10-19 | 2023-10-19 | Liquid crystal display screen capable of effectively radiating heat and backlight module thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311352622.6A CN117135892B (en) | 2023-10-19 | 2023-10-19 | Liquid crystal display screen capable of effectively radiating heat and backlight module thereof |
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| CN117135892A CN117135892A (en) | 2023-11-28 |
| CN117135892B true CN117135892B (en) | 2024-01-16 |
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| CN218042203U (en) * | 2022-04-26 | 2022-12-13 | 云南建投矿业工程有限公司 | Air compressor machine monitoring display terminal |
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| WO2009143764A1 (en) * | 2008-05-27 | 2009-12-03 | Shenzhen New Super-Bright Lcd Display Co., Ltd. | Lcd apparatus with heat dissipation arrangements |
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| Publication number | Publication date |
|---|---|
| CN117135892A (en) | 2023-11-28 |
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