CN112863260A

CN112863260A - Intelligent teaching projecting apparatus with heat dissipation function

Info

Publication number: CN112863260A
Application number: CN202110156540.9A
Authority: CN
Inventors: 何小容; 张凯
Original assignee: Shenzhen Huawen Network Education Technology Co ltd
Current assignee: Shenzhen Huawen Network Education Technology Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-05-28

Abstract

The invention relates to a projector, in particular to an intelligent teaching projector with a heat dissipation function. The technical problem of the invention is as follows: the utility model provides an can not influence projecting apparatus life, can reduce the intelligent teaching projecting apparatus that has the heat dissipation function of the dust content on the projecting apparatus. The technical implementation scheme of the invention is as follows: an intelligent teaching projector with a heat dissipation function comprises an installation base and a square column, wherein the lower side of the installation base is connected with the square column; the square column is provided with a square hole tube in a sliding mode. The projector heat dissipation device can dissipate heat of the projector through the heat conduction disc and the heat dissipation mechanism, reduces heat of the projector, does not affect the service life of the projector, can block external dust and reduce dust content on the projector through the effect of the protection mechanism when the projector is not used, and can wipe off the dust on the projector through the cleaning mechanism to avoid the dust from affecting projection quality.

Description

Intelligent teaching projecting apparatus with heat dissipation function

Technical Field

The invention relates to a projector, in particular to an intelligent teaching projector with a heat dissipation function.

Background

The projector is also called a projector, is equipment capable of projecting images or videos onto a curtain, is mainly applied to places such as offices and schools, and is convenient for students to watch in schools by projecting teaching materials onto a wall through the projector frequently.

The projecting apparatus can produce a lot of heats at the operation in-process, so the inside part of projecting apparatus is in the state of high temperature, and the projecting apparatus is when working for a long time, and its inside part also can be in the state of high temperature always to shorten the life of projecting apparatus, the projecting apparatus exposes in addition in external, so can be stained with a large amount of dust on the projecting apparatus.

The device which can reduce the dust content on the projector without influencing the service life of the projector is developed to solve the existing problems.

Disclosure of Invention

In order to overcome the defects that when the projector works for a long time, the internal parts of the projector are always in a high-temperature state, so that the service life of the projector is shortened, and the projector is exposed to the outside, so that a large amount of dust is adhered to the projector, the invention has the technical problems that: the utility model provides an can not influence projecting apparatus life, can reduce the intelligent teaching projecting apparatus that has the heat dissipation function of the dust content on the projecting apparatus.

The technical implementation scheme of the invention is as follows: an intelligent teaching projector with a heat dissipation function comprises an installation base and a square column, wherein the lower side of the installation base is connected with the square column; the square column is provided with a square hole pipe in a sliding manner; one side of the square hole pipe is connected with a connecting plate; the lower side of the connecting plate is connected with the mounting frame; the projector is mounted on one side of the mounting frame; one side of the projector is connected with the heat conducting disc; the lifting mechanism is arranged on one side of the square hole pipe; the heat dissipation mechanism is mounted on the mounting frame.

In a preferred embodiment of the invention, the lifting mechanism comprises a speed reducing motor, and the speed reducing motor is arranged at the lower part of the connecting plate; the output shaft of the speed reducing motor is connected with the wire spool; the pull rope is wound on the wire spool and fixedly connected with the mounting base; and the upper part of one side of the square hole pipe is provided with the distance sensor.

In a preferred embodiment of the present invention, the heat dissipation mechanism comprises a temperature sensor, the mounting frame is provided with the temperature sensor, and the temperature sensor is in contact with the heat conducting plate; the mounting frame is connected with the air guide cover; the fan is arranged in the air guide cover; the outer side of the heat conducting disc is uniformly connected with heat conducting pipes at intervals; the heat dissipation rings are connected between the heat conduction pipes; and one side of the radiating ring is connected with a radiating fin.

In a preferred embodiment of the invention, the device further comprises a cleaning mechanism, wherein the cleaning mechanism comprises a pull wire, the lower side of the mounting base is connected with the pull wire, and the pull wire penetrates through the square hole pipe; the mounting frame is provided with at least four guide seats in a sliding manner; the fixing ring is connected between the guide seats, and the pull wire is fixedly connected with the fixing ring; the fixed ring is internally connected with a cleaning sponge; the first spring is arranged between one of the guide seats and the mounting frame; and the lower part of one side of the square hole pipe is provided with a wire guide wheel, and the pull wire bypasses the wire guide wheel.

In a preferred embodiment of the invention, the protection device further comprises a protection mechanism, wherein the protection mechanism comprises a hinge seat, and the lower part of one side of the square hole pipe is connected with the hinge seat; the hinge seat is rotatably connected with at least four connecting rods at uniform intervals; the connecting rods are connected with the sealing plates; the mounting block is connected to the mounting frame; the middle part of one side of the mounting block is connected with a sliding rod; the sliding sleeve is arranged on the sliding rod in a sliding manner; the outer side of the sliding sleeve is rotatably connected with at least four hinge rods at uniform intervals, and the hinge rods are rotatably connected with the sealing plate; a second spring is arranged between the sliding sleeve and the mounting block and sleeved on the sliding rod; the upper side of the sliding sleeve is connected with a driving ring, and the stay wire penetrates through the driving ring; and the pull wire is connected with a stop block, and the stop block is in contact with the driving ring.

In a preferred embodiment of the invention, the wire guiding device further comprises a wire protecting mechanism, wherein the wire protecting mechanism comprises a protecting plate, and one side of the wire guiding wheel is connected with the protecting plate; one side of the protection plate is connected with a connecting column; the upper part of one side of the connecting column is connected with the guide ring, and the stay wire penetrates through the guide ring.

In a preferred embodiment of the invention, the cleaning mechanism comprises a connecting disc, wherein the connecting disc is connected to one of the sealing plates; the elastic disc is connected to the connecting disc; the elastic disc is connected with the sponge ring.

In a preferred embodiment of the invention, the device further comprises a collecting mechanism, wherein the collecting mechanism comprises an elastic membrane, and the elastic membrane is connected between the two closing plates; the two closing plates are connected with the baffle plates; the elastic membrane is connected with a blocking cloth; the magnet, be connected with magnet on the fender cloth, magnet adsorbs on the baffle.

In a preferred embodiment of the invention, the device also comprises a control box, the middle part of one side of the square hole pipe is connected with the control box, the control box comprises a switch power supply, a control module, a power module, a 315M receiving module and a remote controller, wherein the switch power supply supplies power to the whole device, the output end of the switch power supply is electrically connected with the power module, the power module is connected with a power master switch through a circuit, the control module is electrically connected with the power module, the 315M receiving module is electrically connected with the control module, the 315M receiving module is connected with the remote controller through wireless transmission, the remote controller is provided with a rising key and a falling key, the control module is connected with a DS1302 clock circuit and a 24C02 circuit, a distance sensor and a temperature sensor are electrically connected with the control module, and a speed reduction motor and a fan are connected with the control module through a peripheral circuit.

Has the advantages that:

1. can dispel the heat to the projecting apparatus through heat conduction dish and heat dissipation mechanism, reduce the heat of projecting apparatus to do not influence the life of projecting apparatus.

2. Can clear up the dust on the fin through clearance mechanism, avoid the dust to influence the heat dispersion of fin.

3. Through the effect of protection mechanism, when not using the projecting apparatus, can block external dust, reduce the dust content on the projecting apparatus.

4. The stay wire can be blocked by the wire protection mechanism, the stay wire is prevented from falling off from the wire guide wheel, and the normal operation of the device is ensured.

5. Dust on the projector can be wiped off through the cleaning mechanism, and the influence of the dust on the projection quality is avoided.

6. The dust swept from the radiating fins can be cleaned conveniently by people through the collecting mechanism.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of the lifting mechanism of the present invention.

Fig. 3 is a schematic perspective view of the cleaning mechanism of the present invention.

Fig. 4 is a schematic perspective view of the heat dissipation mechanism of the present invention.

Fig. 5 is a schematic perspective view of a first part of the present invention.

Fig. 6 is a perspective view of a second part of the present invention.

Fig. 7 is a schematic perspective view of the protection mechanism of the present invention.

Fig. 8 is a schematic perspective view of the wire protection mechanism of the present invention.

Fig. 9 is a schematic perspective view of the cleaning mechanism of the present invention.

Fig. 10 is a perspective view of the collecting mechanism of the present invention.

FIG. 11 is a circuit block diagram of the present invention.

Fig. 12 is a schematic circuit diagram of the present invention.

Wherein: 1-mounting base, 2-square column, 3-square hole tube, 31-control box, 4-connecting plate, 5-mounting rack, 6-projector, 7-heat conducting disc, 8-lifting mechanism, 81-speed reducing motor, 82-wire reel, 83-pull rope, 84-distance sensor, 9-heat radiating mechanism, 91-temperature sensor, 92-wind scooper, 93-fan, 94-heat conducting tube, 95-heat radiating ring, 96-heat radiating fin, 10-cleaning mechanism, 101-pull rope, 102-guide seat, 103-fixing ring, 104-cleaning sponge, 105-first spring, 106-wire guide wheel, 11-protection mechanism, 111-hinged seat, 112-connecting rod, 113-sealing plate, 114-mounting block, 115-sliding bar, 116-sliding sleeve, 117-hinge bar, 118-second spring, 119-driving ring, 1110-stop, 12-thread-protecting mechanism, 121-protecting plate, 122-connecting column, 123-guiding ring, 13-cleaning mechanism, 131-connecting disc, 132-elastic disc, 133-sponge ring, 14-collecting mechanism, 141-elastic film, 142-baffle, 143-magnet, 144-baffle cloth.

Detailed Description

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Example 1

The utility model provides an intelligence teaching projecting apparatus with heat dissipation function, as figure 1, figure 2, figure 3 and figure 4 are shown, including installation base 1, square column 2, square hole pipe 3, connecting plate 4, mounting bracket 5, projecting apparatus 6, heat conduction dish 7, elevating system 8 and heat dissipation mechanism 9, installation base 1 bottom is connected with square column 2, the gliding style is equipped with square hole pipe 3 on square column 2, square hole pipe 3 left side is connected with connecting plate 4, connecting plate 4 bottom is connected with mounting bracket 5, projecting apparatus 6 is installed in mounting bracket 5 left side, 6 right sides of projecting apparatus are connected with heat conduction dish 7, elevating system 8 is installed to 3 front sides of square hole pipe, heat dissipation mechanism 9 is installed to 5 left parts of mounting bracket.

The lifting mechanism 8 comprises a speed reducing motor 81, a wire spool 82, a pull rope 83 and a distance sensor 84, the speed reducing motor 81 is installed on the lower portion of the connecting plate 4, the wire spool 82 is connected to an output shaft of the speed reducing motor 81, the pull rope 83 is wound on the wire spool 82, the top end of the pull rope 83 is connected with the bottom of the installation base 1, and the distance sensor 84 is installed on the upper portion of the front side of the square hole tube 3.

The heat dissipation mechanism 9 comprises a temperature sensor 91, a wind scooper 92, a fan 93, heat conducting pipes 94, a heat dissipation ring 95 and heat dissipation fins 96, the temperature sensor 91 is installed on the left portion of the mounting frame 5, the temperature sensor 91 is in contact with the heat conducting disc 7, the wind scooper 92 is connected to the left portion of the mounting frame 5, the fan 93 is installed in the wind scooper 92, the heat conducting pipes 94 are evenly connected to the outer side of the heat conducting disc 7 at intervals, the heat dissipation ring 95 is connected between the heat conducting pipes 94, and the heat dissipation fins 96 are connected.

The whole device is installed on the ceiling through the installation base 1, when the projector 6 needs to be used, people can open the projector 6, then a power main switch is pressed down to electrify the whole device, the control module controls the distance sensor 84 and the temperature sensor 91 to work, the temperature sensor 91 can detect the temperature of the heat conducting disc 7, the heat generated by the projector 6 is conducted to the radiating ring 95 and the radiating fin 96 through the heat conducting disc 7 and the heat conducting pipe 94 to be radiated, when the temperature detected by the temperature sensor 91 reaches a rated value in the control module, the temperature sensor 91 sends a signal, the control module controls the fan 93 to work to radiate after receiving the signal, so that the service life of the projector 6 is not influenced, when the temperature detected by the temperature sensor 91 is lower than the rated value in the control module, the temperature sensor 91 sends a signal, the control module controls the fan 93 to be turned off after receiving the signal, when the projector 6 is not needed to be used, people turn off the projector 6, then press a rising key on a remote controller, the rising key sends a signal, the 315M receiving module receives the signal, the 315M receiving module inputs the signal into the control module, the control module controls the speed reducing motor 81 to rotate clockwise, the speed reducing motor 81 drives the wire reel 82 to rotate clockwise, the wire reel 82 retracts the pull rope 83, further the connecting plate 4 is driven to move upwards, the connecting plate 4 drives the square hole pipe 3 to move upwards, the square hole pipe 3 drives the distance sensor 84 to move upwards, the connecting plate 4 can also drive the mounting frame 5 to move upwards, the mounting frame 5 drives the projector 6 to move upwards, the distance sensor 84 can detect the distance between the mounting base 1 and the distance sensor 84, when the distance value detected by the distance sensor 84 reaches the minimum rated value in the control module, the distance sensor 84 sends a signal, the control module receives the signal and then controls the speed reducing motor 81 to be turned off, when the projector 6 needs to be used next time, people press down a descending key on the remote controller, the descending key sends a signal, the 315M receiving module receives the signal, the 315M receiving module inputs the signal into the control module, the control module controls the speed reducing motor 81 to rotate anticlockwise, the speed reducing motor 81 drives the wire spool 82 to rotate anticlockwise, the wire spool 82 releases the pull rope 83, the connecting plate 4 and the square hole pipe 3 move downwards under the action of self gravity, the projector 6 moves downwards along with the wire spool, when the distance value detected by the distance sensor 84 reaches the maximum rated value in the control module, the distance sensor 84 sends a signal, the control module receives the signal and then controls the speed reducing motor 81 to be turned off, the power main switch is pressed again, the whole device is powered off, and the distance sensor 84 and.

Example 2

On the basis of embodiment 1, as shown in fig. 2, fig. 3, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9 and fig. 10, the cleaning device further includes a cleaning mechanism 10, the cleaning mechanism 10 includes a pull wire 101, guide seats 102, fixing rings 103, cleaning sponges 104, first springs 105 and wire guide wheels 106, the right side of the bottom of the mounting base 1 is connected with the pull wire 101, the pull wire 101 passes through the square hole tube 3, the guide seats 102 are slidably arranged on the front side, the rear side, the upper side and the lower side of the right portion of the mounting frame 5, the fixing rings 103 are connected among the four guide seats 102, the pull wire 101 is connected with the fixing rings 103, the cleaning sponges 104 are connected in the fixing rings 103, the first springs 105 are connected between the guide seats 102 and the mounting frame 5 above, the wire guide wheels 106 are mounted on the lower portion of the.

Initially, the first spring 105 is in a stretching state, when the square hole tube 3 moves upwards, the stay wire 101 is loosened, the guide seat 102 above moves leftwards under the action of the first spring 105, so as to drive the fixing ring 103 to move leftwards, and further drive the cleaning sponge 104 to move leftwards, the cleaning sponge 104 can clean the radiating fin 96, clean dust on the radiating fin 96, and prevent the dust from affecting the heat radiation performance of the radiating fin 96, when the projector 6 is not used, the cleaning sponge 104 can clean the radiating fin 96, so as not to affect the use of the radiating fin 96, when the square hole tube 3 moves downwards, the stay wire 101 pulls the fixing ring 103 to move rightwards, so as to drive the cleaning sponge 104 to move rightwards, and the radiating fin 96 is cleaned again.

The protection device comprises a protection mechanism 11, the protection mechanism 11 comprises a hinge seat 111, connecting rods 112, a closing plate 113, a mounting block 114, a sliding rod 115, a sliding sleeve 116, hinge rods 117, a second spring 118, a driving ring 119 and a stop block 1110, the hinge seat 111 is connected to the lower portion of the left side of the square hole tube 3, four connecting rods 112 are rotatably connected to the hinge seat 111 at uniform intervals, the closing plate 113 is connected to each of the four connecting rods 112, the mounting block 114 is connected to the right portion of the mounting frame 5, the sliding rod 115 is connected to the middle portion of the right side of the mounting block 114, the sliding sleeve 116 is slidably arranged on the sliding rod 115, four hinge rods 117 are rotatably connected to the outer side of the sliding sleeve 116 at uniform intervals, the four hinge rods 117 are rotatably connected to the four closing plates 113 respectively, a second spring 118 is connected between the sliding sleeve 116 and the mounting block 114, the second spring 118, a stopper 1110 is attached to the wire 101, and the right side of the stopper 1110 contacts the left side of the drive ring 119.

Initially, the second spring 118 is in a stretching state, when the square hole tube 3 moves upwards, the pull wire 101 is loosened, the upper guide seat 102 moves leftwards under the action of the first spring 105, so as to drive the fixing ring 103 to move leftwards, the fixing ring 103 drives the stop 1110 to move leftwards through the pull wire 101, the stop 1110 no longer blocks the driving ring 119, the sliding sleeve 116 moves leftwards under the action of the second spring 118, the closing plate 113 is driven to swing inwards through the hinge rod 117, the closing plate 113 can block outside dust, so as to prevent the outside dust from floating on the projector 6, reduce the dust content on the projector 6, when the square hole tube 3 moves downwards, the pull wire 101 pulls the stop 1110 to move rightwards, the stop 1110 pushes the driving ring 119 to move rightwards, the driving ring 119 drives the sliding sleeve 116 to move rightwards, the second spring 118 is stretched, the sliding sleeve 116 drives the closing plate 113 to swing outwards through the hinge rod 117, the projector 6 is exposed.

The wire guiding device is characterized by further comprising a wire protecting mechanism 12, wherein the wire protecting mechanism 12 comprises a protecting plate 121, a connecting column 122 and a guide ring 123, the protecting plate 121 is connected to the right side of the wire guiding wheel 106, the connecting column 122 is connected to the right side of the protecting plate 121, the guide ring 123 is connected to the upper portion of the left side of the connecting column 122, and the pull wire 101 penetrates through the guide ring 123.

The protection plate 121 and the guide ring 123 can block the pull wire 101, prevent the pull wire 101 from falling off from the wire guide wheel 106 and ensure the normal operation of the device.

The cleaning device is characterized by further comprising a cleaning mechanism 13, wherein the cleaning mechanism 13 comprises a connecting disc 131, an elastic disc 132 and a sponge ring 133, the left part of the closing plate 113 above the front side is connected with the connecting disc 131, the right side of the connecting disc 131 is connected with the elastic disc 132, and the right side of the elastic disc 132 is connected with the sponge ring 133.

When the closing plate 113 swings inwards, the closing plate 113 above the front side drives the connecting disc 131 to move backwards, the connecting disc 131 drives the elastic disc 132 and the sponge ring 133 to move backwards, the sponge ring 133 can wipe the projector 6 to wipe off dust on the projector 6, and therefore projection quality is prevented from being affected by the dust.

The collecting mechanism 14 is further included, the collecting mechanism 14 includes an elastic membrane 141, baffles 142, magnets 143 and blocking cloth 144, the elastic membrane 141 is connected between the two sealing plates 113 below, the baffles 142 are connected to the tops of the two sealing plates 113 below, the two baffles 142 are both iron, the blocking cloth 144 is connected to the elastic membrane 141, the two magnets 143 are connected to the blocking cloth 144, and the two magnets 143 are respectively adsorbed to the two baffles 142.

When the cleaning sponge 104 cleans the heat radiating fins 96, dust on the heat radiating fins 96 falls on the elastic film 141, the blocking cloth 144 and the blocking plate 142 can block the dust on the elastic film 141, people can take the magnet 143 off the blocking plate 142, so that the blocking cloth 144 can not block the dust on the elastic film 141 any more, then the dust on the elastic film 141 is cleaned, and after the cleaning is finished, people put the magnet 143 back on the blocking plate 142, because the elastic film 141 and the blocking cloth 144 are soft, the movement of the closing plate 113 cannot be influenced.

As shown in fig. 1, fig. 11 and fig. 12, the device further comprises a control box 31, the control box 31 is connected to the middle part of the front side of the square hole tube 3, the control box 31 comprises a switching power supply and a control module, the power module, 315M receiving module and remote controller, switching power supply is the power supply of whole device, switching power supply's output and power module pass through electric connection, there is the power master switch through the line connection on the power module, control module and power module pass through electric connection, 315M receiving module and control module pass through electric connection, 315M receiving module and remote controller pass through wireless transmission and connect, be equipped with ascending button and decline button on the remote controller, last DS1302 clock circuit and the 24C02 circuit of being connected with of control module, distance sensor 84 and temperature sensor 91 all pass through electric connection with control module, gear motor 81 and fan 93 all pass through peripheral circuit with control module and are connected.

It should be understood that the above description is for exemplary purposes only and is not meant to limit the present invention. Those skilled in the art will appreciate that variations of the present invention are intended to be included within the scope of the claims herein.

Claims

1. The utility model provides an intelligent teaching projecting apparatus with heat dissipation function, characterized by, including:

the device comprises a mounting base (1) and a square column (2), wherein the lower side of the mounting base (1) is connected with the square column (2);

the square column (2) is provided with a square hole pipe (3) in a sliding manner;

one side of the square hole pipe (3) is connected with the connecting plate (4);

the lower side of the connecting plate (4) is connected with the mounting frame (5);

the projector (6) is mounted on one side of the mounting frame (5);

the heat conduction plate (7) is connected with one side of the projector (6);

the lifting mechanism (8) is arranged on one side of the square hole pipe (3);

the heat dissipation mechanism (9), install heat dissipation mechanism (9) on mounting bracket (5).

2. An intelligent teaching projector with heat dissipation function as claimed in claim 1, wherein the lifting mechanism (8) comprises:

the speed reducing motor (81), the lower part of the connecting plate (4) is provided with the speed reducing motor (81);

the output shaft of the speed reducing motor (81) is connected with the wire spool (82);

the pull rope (83) is wound on the wire spool (82), and the pull rope (83) is fixedly connected with the mounting base (1);

and the upper part of one side of the square hole pipe (3) is provided with the distance sensor (84).

3. An intelligent teaching projector with heat dissipation function as claimed in claim 2, wherein the heat dissipation mechanism (9) comprises:

the temperature sensor (91) is mounted on the mounting frame (5), and the temperature sensor (91) is in contact with the heat conduction plate (7);

the air guide cover (92) is connected to the mounting rack (5);

a fan (93), wherein the fan (93) is installed in the air guide cover (92);

the heat conduction pipes (94) are connected to the outer side of the heat conduction disc (7) at uniform intervals;

the heat dissipation rings (95) are connected between the heat conduction pipes (94);

and the radiating fin (96) is connected with one side of the radiating ring (95).

4. The intelligent teaching projector with the heat dissipation function as claimed in claim 3, further comprising a cleaning mechanism (10), wherein the cleaning mechanism (10) comprises:

the lower side of the mounting base (1) is connected with a pull wire (101), and the pull wire (101) penetrates through the square hole pipe (3);

the mounting rack (5) is provided with at least four guide seats (102) in a sliding manner;

the fixing ring (103) is connected between the guide seats (102), and the pull wire (101) is fixedly connected with the fixing ring (103);

a cleaning sponge (104), wherein the cleaning sponge (104) is connected in the fixing ring (103);

a first spring (105), wherein the first spring (105) is arranged between one guide seat (102) and the mounting frame (5);

the wire guide wheel (106) is installed on the lower portion of one side of the square hole pipe (3), and the pull wire (101) bypasses the wire guide wheel (106).

5. The intelligent teaching projector with the heat dissipation function as claimed in claim 4, further comprising a protection mechanism (11), wherein the protection mechanism (11) comprises:

the lower part of one side of the square hole pipe (3) is connected with the hinge seat (111);

the hinge base (111) is rotatably connected with at least four connecting rods (112) at uniform intervals;

the connecting rods (112) are connected with the closing plates (113);

the mounting block (114) is connected to the mounting rack (5);

the middle part of one side of the mounting block (114) is connected with a sliding rod (115);

the sliding sleeve (116), the sliding rod (115) is provided with the sliding sleeve (116) in a sliding manner;

the hinge rods (117) are rotatably connected to the outer side of the sliding sleeve (116) at intervals uniformly, and the hinge rods (117) are rotatably connected with the closing plate (113);

a second spring (118), a second spring (118) is arranged between the sliding sleeve (116) and the mounting block (114), and the second spring (118) is sleeved on the sliding rod (115);

a driving ring (119), wherein the driving ring (119) is connected to the upper side of the sliding sleeve (116), and the pull wire (101) penetrates through the driving ring (119);

a stop block (1110), wherein the pull wire (101) is connected with the stop block (1110), and the stop block (1110) is contacted with the driving ring (119).

6. The intelligent teaching projector with the heat dissipation function as claimed in claim 5, further comprising a wire protection mechanism (12), wherein the wire protection mechanism (12) comprises:

a protection plate (121), wherein one side of the wire guide wheel (106) is connected with the protection plate (121);

a connecting column (122), wherein one side of the protective plate (121) is connected with the connecting column (122);

the upper part of one side of the connecting column (122) is connected with the guide ring (123), and the pull wire (101) penetrates through the guide ring (123).

7. The intelligent teaching projector with the heat dissipation function as claimed in claim 6, further comprising a cleaning mechanism (13), wherein the cleaning mechanism (13) comprises:

connecting discs (131), wherein one of the closing plates (113) is connected with the connecting disc (131);

the elastic disc (132), the elastic disc (132) is connected to the connecting disc (131);

the elastic disc (132) is connected with a sponge ring (133).

8. The intelligent teaching projector with the heat dissipation function as claimed in claim 7, further comprising a collection mechanism (14), wherein the collection mechanism (14) comprises:

an elastic membrane (141), wherein the elastic membrane (141) is connected between the two closing plates (113);

the baffle plates (142) are connected to the two closing plates (113);

the elastic membrane (141) is connected with a cloth barrier (144);

the magnet (143), be connected with magnet (143) on keeping off cloth (144), magnet (143) adsorb on baffle (142).

9. The intelligent teaching projector with the heat dissipation function as claimed in claim 1, further comprising a control box (31), wherein the control box (31) is connected to the middle of one side of the square hole tube (3), the control box (31) comprises a switching power supply, a control module, a power module, a 315M receiving module and a remote controller, the switching power supply supplies power to the whole device, the output end of the switching power supply is electrically connected with the power module, the power module is connected with a main power switch through a circuit, the control module is electrically connected with the power module, the 315M receiving module is electrically connected with the control module, the 315M receiving module is connected with the remote controller through wireless transmission, the remote controller is provided with an up key and a down key, the control module is connected with a DS1302 clock circuit and a 24C02 circuit, and the distance sensor (84) and the temperature sensor (91) are electrically connected with the control module, the speed reducing motor (81) and the fan (93) are connected with the control module through a peripheral circuit.