CN210805171U

CN210805171U - Advertisement machine with hidden heat dissipation mechanism

Info

Publication number: CN210805171U
Application number: CN201922030325.5U
Authority: CN
Inventors: 石磊; 姜元
Original assignee: Jiangsu Zhongtian Iotian Technology Co ltd
Current assignee: Jiangsu Zhongtian Iotian Technology Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-06-19
Anticipated expiration: 2029-11-22

Abstract

The utility model relates to an advertising machine with a hidden heat dissipation mechanism, which belongs to the technical field of advertising equipment and comprises a shell, fixing piles, a playing unit and a heat conducting plate, wherein the two fixing piles are respectively and fixedly arranged on the left side and the right side of the lower side wall of the shell; the heat dissipation device also comprises a passive heat dissipation mechanism and an active heat dissipation mechanism, wherein the passive heat dissipation mechanism is arranged on the shell, the active heat dissipation mechanism is fixedly arranged in the shell, and the active heat dissipation mechanism is communicated with the passive heat dissipation mechanism; the inner side of the air inlet is provided with a first chain plate which can be controlled to open and close, the inner side of the air outlet is provided with a second chain plate which can be controlled to open and close, the opening and closing sizes of the air inlet and the air outlet can be controlled, the air exchange speed inside and outside the shell can be controlled conveniently, and each device is arranged inside the shell, so that the appearance of the shell can be kept attractive.

Description

Advertisement machine with hidden heat dissipation mechanism

Technical Field

The utility model relates to an advertising equipment technical field, concretely relates to advertisement machine with hidden heat dissipation mechanism.

Background

The advertisement machine is an advertisement propaganda device with audio-video playing function, and is provided with a display screen, a sound device and other devices which are arranged in a shell.

Among the prior art, the advertisement machine is after long-time broadcast picture, because electronic equipment works for a long time in the equipment, can produce a large amount of heats, and then influence electronic equipment's normal work, partial advertisement chance sets up the vent and accelerates the inside and outside heat exchange rate of shell, but the vent size is fixed, the operational environment of different temperatures can't be adapted to, in the great environment of difference in temperature during operation, the heat exchange rate of vent is the same, cause the unbalanced phenomenon of temperature in the shell easily, partial advertisement machine has vent size control assembly, but the outside at the advertisement shell is all installed to this type of equipment, influence the outward appearance of equipment, need improve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's defect and not enough, provide a reasonable in design, convenient to use's advertisement machine with hidden heat dissipation mechanism, it is provided with the link joint No. one in the inboard of air intake, and steerable opening and shutting, it is provided with the link joint No. two in the inboard of air outlet, and steerable opening and shutting, can control the size that opens and shuts of air intake, air outlet, be convenient for the inside and outside air exchange speed of control shell, and each device all sets up inside the shell, can keep the outward appearance of shell pleasing to the eye.

In order to achieve the above object, the utility model adopts the following technical scheme: the device comprises a shell, fixing piles, a playing unit and a heat conducting plate, wherein the two fixing piles are respectively and fixedly arranged on the left side edge and the right side edge of the lower side wall of the shell; the heat dissipation device also comprises a passive heat dissipation mechanism and an active heat dissipation mechanism, wherein the passive heat dissipation mechanism is arranged on the shell, the active heat dissipation mechanism is fixedly arranged in the shell, and the active heat dissipation mechanism is communicated with the passive heat dissipation mechanism;

the passive heat dissipation mechanism comprises an air inlet, a first chain plate, an air outlet and a second chain plate, wherein the left side wall of the shell is provided with the air inlet, the left inner side wall of the shell is fixedly provided with a first chute, the first chute is arranged at the front side and the rear side of the air inlet, the upper side edge of the left inner side wall of the shell is fixedly provided with a first self-winding reel, the first self-winding reel is fixedly wound with the first chain plate, the first chute is internally provided with a first slide block in a sliding manner, the movable end of the first chain plate is fixedly arranged on the first slide block, the first chain plate covers and is arranged at the right side of the air inlet, the right side wall of the shell is provided with the air outlet, the right inner side wall of the shell is fixedly provided with the second chute, the second chute is arranged at the front side and the rear side of the air outlet, the lower side edge of the right inner side wall of, a second sliding block is arranged in the second sliding groove in a sliding mode, the movable end of a second chain plate is fixedly arranged on the second sliding block, and the second chain plate is arranged on the left side of the air outlet in a covering mode; a guide wheel set is fixedly arranged on the inner side wall of the rear part of the shell, a transmission chain is wound on the guide wheel set in a transmission manner, a first sliding block is fixedly arranged on the left belt surface of the transmission chain, and a second sliding block is fixedly arranged on the right belt surface of the transmission chain; pin holes are formed in the left side edge of the rear side wall of the shell at equal intervals from top to bottom, pin rods movably penetrate through the pin holes, and the pin rods movably abut against the upper side wall of the first sliding block;

the active heat dissipation mechanism comprises a centrifugal fan, wherein the centrifugal fan is fixedly arranged at the right side edge end of the rear side wall of the shell, a motor of the centrifugal fan is fixedly arranged on the rear side wall of the shell in a penetrating manner, and the outlet end of the centrifugal fan is arranged in the air outlet in a penetrating manner.

Further, the rear side wall of the heat conducting plate is fixedly provided with a rotating shaft, the rotating shaft is sleeved with a bearing, the bearing is screwed with an air deflector, the upper end of the air deflector is arranged between the centrifugal fan and the air outlet, the front side edge of the air deflector is abutted to the heat conducting plate, the rear side edge of the air deflector is abutted to the rear inner side wall of the shell, a kidney-shaped hole is formed in the air deflector, a nut is arranged in the kidney-shaped hole, a clamping block is screwed on the rotating shaft of the nut, the clamping block is slidably clamped on the side edge of the kidney-shaped hole, a lead screw is arranged in the shell, the nut is sleeved with the lead screw, the upper end bearing of the lead screw is screwed on the upper inner side wall of the shell, the lower end of the lead screw penetrates.

Further, the hinge on the rear side edge of the left outer side wall of shell be equipped with the panel No. one, wear to put on the panel and be fixed with the shutter No. one, the panel covers the left side that sets up at the air intake, be equipped with the couple No. one through the universal joint hinge on the lower side of panel No. one, the fixed link that is provided with around on the left side wall of shell, No. two links set up the rear side at the link No. one, the couple activity is hung and is established in the link No. one.

Further, the rear side wall of the right outer side wall of the shell is hinged with a second panel through a hinge, a second shutter penetrates through the second panel, the second panel covers the right side of the air outlet, a second hook is hinged with the lower side edge of the second panel through a universal joint, a third hanging ring and a fourth hanging ring are fixedly arranged on the right side wall of the shell from front to back, the fourth hanging ring is arranged on the rear side of the third hanging ring, and the second hook is movably hung in the third hanging ring.

Furthermore, a water outlet is arranged on the lower side wall of the shell in a penetrating mode, and a sealing cover is screwed on the lower end opening of the water outlet in a threaded mode.

The utility model discloses a theory of operation is: the external cold air enters the shell through the air inlet, the heat generated by the playing unit is conducted to the heat conducting plate, and then the cold air entering the shell brings the heat on the heat conducting plate out, and the hot air is discharged from the air outlet; the pin rod is pulled out of the pin hole, the first sliding block slides upwards, the first chain plate is collected by the first self-winding reel, the area of the air inlet blocked by the first chain plate is reduced, the area of the air inlet is increased, the air inlet amount is increased, the first sliding block slides upwards, the chain is guided by the guide wheel set, the chain synchronously drives the second sliding block to slide downwards, the second self-winding reel collects the second chain plate, the area of the air outlet is increased, the hot air exhaust amount in the shell is increased, after the sliding adjustment position of the first sliding block is completed, the pin rod is inserted into the pin hole and abuts against the upper surface of the first sliding block, and the first sliding block cannot slide upwards again; the first scroll and the scroll pull the first chain plate, further pull the first sliding block upwards, meanwhile, the second self-winding scroll pull the second sliding block downwards through the second chain plate, and pull the first sliding block upwards through the chain, so that the sliding block cannot fall down due to self gravity; and opening the centrifugal fan, pumping out the hot air accumulated in the shell by the centrifugal fan, and discharging the hot air from the air outlet through the outlet end of the centrifugal fan.

After the structure is adopted, the utility model discloses beneficial effect does:

1. the first chain plate blocks the air inlet and is controlled by the first sliding block, the second chain plate blocks the air outlet and is controlled by the second sliding block, and the first sliding block is in transmission connection with the second sliding block through a chain, so that the area of the first chain plate blocking the air inlet and the area of the second chain plate blocking the air outlet can be synchronously controlled, the air exchange speed in the shell can be controlled, and the heat dissipation speed in the shell can be conveniently controlled;

2. the first chain plate and the second chain plate are arranged inside the shell, the first panel with the first shutter covers the air inlet, the second panel with the second shutter covers the air outlet, the air inlet and the air outlet can be blocked, ventilation is kept, the shell cannot observe an obvious mechanical structure from the outside, and the whole appearance of the shell is attractive;

3. the aviation baffle is through establishing the screw control of lead screw up-and-down rotation soon, and steerable nevertheless shrouding blocks between centrifugal fan and the air outlet, guarantees that centrifugal fan can take out the inside hot-air of shell for centrifugal fan can't suck the cold air that gets into from the air outlet, improves centrifugal fan's efficiency of sucking hot-air.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is a right side view of fig. 1.

Fig. 4 is a schematic diagram of the internal structure of the present invention.

Fig. 5 is a schematic structural view of the middle housing, the centrifugal fan and the air deflector of the present invention.

Fig. 6 is a schematic structural view of the middle nut and the clamping block of the present invention.

Description of reference numerals:

the device comprises a shell 1, a fixed pile 2, a playing unit 3, a heat conducting plate 4, a passive heat dissipation mechanism 5, an air inlet 5-1, a first sliding groove 5-2, a first sliding block 5-3, a first self-winding reel 5-4, a first chain plate 5-5, an air outlet 5-6, a second sliding groove 5-7, a second sliding block 5-8, a second self-winding reel 5-9, a second chain plate 5-10, a guide wheel set 5-11, a chain 5-12, a pin hole 5-13, a pin rod 5-14, an active heat dissipation mechanism 6, a centrifugal fan 6-1, a rotating shaft 7, an air deflector 8, a waist 9, a screw nut 10, a clamping block 11, a screw rod 12, a screwing screw 13, a first panel 14, a first shutter 15, a first hook 16, a first hanging ring 17, a second hanging ring 18, a second panel 19, a second shutter 20, A second hook 21, a third hanging ring 22, a fourth hanging ring 23, a water outlet 24 and a sealing cover 25.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1-6, the present embodiment includes a housing 1, fixing piles 2, a playing unit 3, and a heat conducting plate 4, wherein the two fixing piles 2 are respectively welded on the left and right sides of the lower sidewall of the housing 1, the playing unit 3 is fixed on the front sidewall of the housing 1 by bolts, the heat conducting plate 4 is welded in the housing 1, the heat conducting plate 4 abuts against the rear sidewall of the playing unit 3, and the heat conducting plate 4 collects and expands the heat generated by the playing unit 3 to the empty space in the housing 1; the heat dissipation device also comprises a passive heat dissipation mechanism 5 and an active heat dissipation mechanism 6, wherein the passive heat dissipation mechanism 5 is arranged on the shell 1, the active heat dissipation mechanism 6 is fixedly arranged in the shell 1, and the active heat dissipation mechanism 6 is communicated with the passive heat dissipation mechanism 5;

the passive heat dissipation mechanism 5 comprises an air inlet 5-1, a first chain plate 5-5, an air outlet 5-6 and a second chain plate 5-10, wherein the left side wall of the shell 1 is provided with the air inlet 5-1, the rear side edge of the left outer side wall of the shell 1 is hinged with a first panel 14, the first panel 14 is fixedly provided with a first shutter 15 in a penetrating way, the first panel 14 is arranged on the left side of the air inlet 5-1 in a covering way, the lower side edge of the first panel 14 is hinged with a first hook 16 through a universal joint, the front and rear screws on the left side wall of the shell 1 are fixedly provided with a first hanging ring 17 and a second hanging ring 18, the second hanging ring 18 is arranged on the rear side of the first hanging ring 17, the first hook 16 is movably hung in the first hanging ring 17, the first panel 14 is covered on the air inlet 5-1 and can shield exposed structural components in the air inlet 5-1, meanwhile, the first shutter 15 facilitates the air inlet 5-1 to communicate with the outside air, when the first hook 16 is hung on the first hanging ring 17, the first panel 14 is closed and fixed, when the first hook 16 is hung on the second hanging ring 18, the first panel 14 is opened and fixed, the first sliding groove 5-2 is welded on the left inner side wall of the shell 1, the first sliding groove 5-2 is arranged at the front side and the rear side of the air inlet 5-1, the upper side edge of the left inner side wall of the shell 1 is riveted with a first self-winding reel 5-4, a first chain plate 5-5 is wound and fixed on the first self-winding reel 5-4, a first sliding block 5-3 is arranged in the first sliding groove 5-2 in a sliding manner, the movable end of the first chain plate 5-5 is riveted and fixed on the first sliding block 5-3, and the first chain plate 5-5 is arranged on the right side of the air inlet 5-1 in a covering manner;

an air outlet 5-6 is arranged on the right side wall of the shell 1, a second panel 19 is hinged on the rear side wall of the right outer side wall of the shell 1 through a hinge, a second shutter 20 penetrates through the second panel 19, the second panel 19 is covered and arranged on the right side of the air outlet 5-6, a second hook 21 is hinged on the lower side edge of the second panel 19 through a universal joint, a third hanging ring 22 and a fourth hanging ring 23 are fixedly arranged on the right side wall of the shell 1 from front to back, the fourth hanging ring 23 is arranged on the rear side of the third hanging ring 22, the second hook 21 is movably hung in the third hanging ring 22, the second panel 19 blocks the air outlet 5-6 and can shield exposed structural members in the air outlet 5-6, meanwhile, the second shutter 20 facilitates the air outlet 5-6 to be communicated with the outside air, when the second hook 21 is hung on the third hanging ring 22, the second panel 19 is closed and fixed, when the second hook 21 is hung on the fourth hanging ring 23, the second panel 19 is opened and fixed, the second sliding groove 5-7 is welded on the right inner side wall of the shell 1, the second sliding groove 5-7 is arranged on the front side and the rear side of the air outlet 5-6, the second self-winding reel 5-9 is riveted on the lower side edge of the right inner side wall of the shell 1, the second chain plate 5-10 is wound and fixed on the second self-winding reel 5-9, the second sliding block 5-8 is arranged in the second sliding groove 5-7 in a sliding manner, the movable end of the second chain plate 5-10 is riveted and fixed on the second sliding block 5-8, the second chain plate 5-10 is arranged on the left side of the air outlet 5-6 in a covering manner, and the universal joint is two ring buckles which are provided with connecting rods and are mutually buckled;

a guide wheel set 5-11 is fixed on a rotating shaft on the rear inner side wall of the shell 1, a transmission chain 5-12 is arranged on the guide wheel set 5-11 in a transmission winding mode, a first sliding block 5-3 is clamped and fixed on the left belt surface of the transmission chain 5-12, and a second sliding block 5-8 is clamped and fixed on the right belt surface of the transmission chain 5-12; pin holes 5-13 are formed in the left side edge of the rear side wall of the shell 1 at equal intervals from top to bottom, pin rods 5-14 are movably arranged in the pin holes 5-13 in a penetrating mode, and the pin rods 5-14 are movably abutted to the upper side wall of the first sliding block 5-3;

a water outlet 24 is arranged on the lower side wall of the shell 1 in a penetrating way, a sealing cover 25 is screwed on the lower end opening of the water outlet 24 in a covering way, when water is accumulated in the shell 1 accidentally, the sealing cover 25 is opened, and water is drained through the water outlet 24;

the active heat dissipation mechanism 6 comprises a centrifugal fan 6-1, wherein the centrifugal fan 6-1 is riveted at the right side edge end of the rear side wall of the shell 1, a motor of the centrifugal fan 6-1 is fixedly arranged on the rear side wall of the shell 1 in a penetrating way, so that heat generated by the centrifugal fan 6-1 during working can be directly dissipated into the outside, the outlet end of the centrifugal fan 6-1 is arranged in the air outlet 5-6 in a penetrating way, a rotating shaft 7 is welded on the rear side wall of the heat conduction plate 4, a bearing is sleeved on the rotating shaft 7 and is connected with a wind deflector 8 in a rotating way, the upper end of the wind deflector 8 is arranged between the centrifugal fan 6-1 and the air outlet 5-6, the front side edge of the wind deflector 8 is abutted against the heat conduction plate 4, the rear side edge of the wind deflector 8 is abutted against the rear inner side wall of the shell 1, a waist-, a clamping block 11 is rotatably arranged on a rotating shaft of a screw 10, the clamping block 11 is slidably clamped on the side edge of a kidney-shaped hole 9, a screw rod 12 is arranged in a shell 1, the screw 10 is sleeved and rotatably connected on the screw rod 12, an upper end bearing of the screw rod 12 is rotatably arranged on an upper inner side wall of the shell 1, a lower end of the screw rod 12 is rotatably connected on a lower side wall of the shell 1 through a bearing, a lower end head of the screw rod 12 is welded with a screw 13, the screw rod 12 is rotated when the centrifugal fan 6-1 draws air and dissipates heat, the screw 10 slides downwards on the screw rod 12, the screw 10 slides in the kidney-shaped hole 9 through the clamping block 11, the left end of the air deflector 8 rotates downwards along the axial direction of the rotating shaft 7 and is blocked between the air outlet 5-6 and an inlet of the centrifugal fan 6-1, and the centrifugal fan 6-1 can be prevented from drawing external air from the air, the centrifugal fan 6-1 can completely pump out the hot air in the shell 1, and the air exchange efficiency of the centrifugal fan 6-1 is improved.

The working principle of the specific embodiment is as follows: the external cold air enters the shell 1 through the air inlet 5-1, the heat generated by the playing unit 3 is conducted to the heat conducting plate 4, the cold air entering the shell 1 brings the heat on the heat conducting plate 4 out, and the hot air is discharged from the air outlet 5-6; the pin rods 5-14 are drawn out of the pin holes 5-13, the first sliding block 5-3 slides upwards, the first self-winding reel 5-4 retracts the first chain plate 5-5, the area of the air inlet 5-1 blocked by the first chain plate 5-5 is reduced, the opening area of the air inlet 5-1 is increased, the air intake is increased, the chain 5-12 is guided by the guide wheel set 5-11 while the first sliding block 5-3 slides upwards, the chain 5-12 synchronously drives the second sliding block 5-8 to slide downwards, the second self-winding reel 5-9 retracts the second chain plate 5-10, the area of the air outlet 5-6 is increased, the air exhaust amount of hot air in the shell 1 is increased, and after the sliding adjustment position of the first sliding block 5-3 is finished, the pin rods 5-14 are inserted into the pin holes 5-13, the pin rod 5-14 is abutted against the upper surface of the first sliding block 5-3, so that the first sliding block 5-3 cannot slide upwards again; the first scroll and the scroll pull the first chain plate 5-5, further pull the first sliding block 5-3 upwards, meanwhile, the second self-winding scroll 5-9 pulls the second sliding block 5-8 downwards through the second chain plate 5-10, and pulls the first sliding block 5-3 upwards through the chain 5-12, so that the sliding block cannot fall due to self gravity; the centrifugal fan 6-1 is turned on, the centrifugal fan 6-1 draws out the hot air accumulated inside the casing 1, and the hot air is discharged from the air outlet 5-6 through the outlet end of the centrifugal fan 6-1.

After adopting above-mentioned structure, this embodiment beneficial effect does:

1. the first chain plate 5-5 blocks the air inlet 5-1 and is controlled by the first sliding block 5-3, the second chain plate 5-10 blocks the air outlet 5-6 and is controlled by the second sliding block 5-8, and the first sliding block 5-3 is in transmission connection with the second sliding block 5-8 through the chain 5-12, so that the area of the first chain plate 5-5 blocking the air inlet 5-1 and the area of the second chain plate 5-10 blocking the air outlet 5-6 can be synchronously controlled, further the air exchange speed in the shell 1 can be controlled, and the heat dissipation speed in the shell 1 can be conveniently controlled;

2. the first chain plate 5-5 and the second chain plate 5-10 are arranged inside the shell 1, the first panel 14 with the first shutter 15 covers the air inlet 5-1, the second panel 19 with the second shutter 20 covers the air outlet 5-6, the air inlet 5-1 and the air outlet 5-6 can be blocked, ventilation is kept, the shell 1 cannot observe an obvious mechanical structure from the outside, and the shell 1 is attractive in overall appearance;

3. the air deflector 8 is controlled to rotate up and down through a nut 10 which is arranged on the screw rod 12 in a rotating mode, the sealing plate can be controlled to block the space between the centrifugal fan 6-1 and the air outlet 5-6, the centrifugal fan 6-1 can be guaranteed to pump out hot air in the shell 1, the centrifugal fan 6-1 cannot pump cold air entering from the air outlet 5-6, and the efficiency of the centrifugal fan 6-1 in pumping hot air is improved.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.

Claims

1. An advertising machine with a hidden heat dissipation mechanism comprises a shell (1), fixing piles (2), a playing unit (3) and a heat conducting plate (4), wherein the two fixing piles (2) are respectively and fixedly arranged on the left side edge and the right side edge of the lower side wall of the shell (1), the playing unit (3) is fixedly arranged on the front side wall of the shell (1) in a penetrating way, the heat conducting plate (4) is fixedly arranged in the shell (1), and the heat conducting plate (4) abuts against the rear side wall of the playing unit (3); the method is characterized in that: the heat dissipation device also comprises a passive heat dissipation mechanism (5) and an active heat dissipation mechanism (6), wherein the passive heat dissipation mechanism (5) is arranged on the shell (1), the active heat dissipation mechanism (6) is fixedly arranged in the shell (1), and the active heat dissipation mechanism (6) is communicated with the passive heat dissipation mechanism (5);

the passive heat dissipation mechanism (5) comprises an air inlet (5-1), a first chain plate (5-5), an air outlet (5-6) and a second chain plate (5-10), wherein the air inlet (5-1) is formed in the left side wall of the shell (1), a first sliding groove (5-2) is fixedly formed in the left inner side wall of the shell (1), the first sliding groove (5-2) is formed in the front side and the rear side of the air inlet (5-1), a first self-winding reel (5-4) is fixedly arranged on the upper side edge of the left inner side wall of the shell (1), the first chain plate (5-5) is fixedly wound on the first self-winding reel (5-4), a first sliding block (5-3) is arranged in the first sliding groove (5-2), and the movable end of the first chain plate (5-5) is fixedly arranged on the first sliding block (5-3), and the first chain plate (5-5) is covered on the right side of the air inlet (5-1), the right side wall of the shell (1) is provided with an air outlet (5-6), the right inner side wall of the shell (1) is fixedly provided with a second sliding chute (5-7), the second sliding chutes (5-7) are arranged at the front side and the rear side of the air outlet (5-6), the lower side edge of the right inner side wall of the shell (1) is fixedly provided with a second self-winding reel (5-9), second chain plates (5-10) are wound and fixed on the second self-winding reel (5-9), second sliding blocks (5-8) are arranged in the second sliding chutes (5-7) in a sliding manner, the movable ends of the second chain plates (5-10) are fixedly arranged on the second sliding blocks (5-8), and the second chain plates (5-10) cover the left side of the air outlet (5-6); a guide wheel set (5-11) is fixedly arranged on the inner side wall of the rear part of the shell (1), a transmission chain (5-12) is arranged on the guide wheel set (5-11) in a transmission winding manner, a first sliding block (5-3) is fixedly arranged on the left belt surface of the transmission chain (5-12), and a second sliding block (5-8) is fixedly arranged on the right belt surface of the transmission chain (5-12); pin holes (5-13) are formed in the lower part of the left side edge of the rear side wall of the shell (1) at equal intervals, pin rods (5-14) are movably arranged in the pin holes (5-13) in a penetrating mode, and the pin rods (5-14) are movably abutted to the upper side wall of the first sliding block (5-3);

the active heat dissipation mechanism (6) comprises a centrifugal fan (6-1), wherein the centrifugal fan (6-1) is fixedly arranged at the upper end of the right side edge of the rear side wall of the shell (1), a motor of the centrifugal fan (6-1) is fixedly arranged on the rear side wall of the shell (1) in a penetrating mode, and the outlet end of the centrifugal fan (6-1) is arranged in the air outlet (5-6) in a penetrating mode.

2. The advertising machine with the hidden heat dissipation mechanism as claimed in claim 1, wherein: a rotating shaft (7) is fixedly arranged on the rear side wall of the heat conducting plate (4), a bearing is sleeved on the rotating shaft (7) and is screwed with a wind deflector (8), the upper end of the wind deflector (8) is arranged between the centrifugal fan (6-1) and the air outlet (5-6), the front side edge of the wind deflector (8) is abutted on the heat conducting plate (4), the rear side edge of the wind deflector (8) is abutted on the rear inner side wall of the shell (1), a kidney-shaped hole (9) is arranged on the wind deflector (8), a screw nut (10) is arranged in the kidney-shaped hole (9), a clamping block (11) is screwed on the rotating shaft on the screw nut (10), the clamping block (11) slides on the side edge of the kidney-shaped hole (9), a screw rod (12) is arranged in the shell (1), the screw nut (10) is sleeved and screwed on the screw rod (12), the upper end bearing of the screw rod (12) is screwed, the lower end of the screw rod (12) is threaded through a bearing and screwed on the lower side wall of the shell (1), and the lower end head of the screw rod (12) is fixedly provided with a screwing screw (13).

3. The advertising machine with the hidden heat dissipation mechanism as claimed in claim 1, wherein: the rear side edge of the left outer side wall of the shell (1) is hinged with a first panel (14), a first blind window (15) penetrates through and is fixed on the first panel (14), the first panel (14) covers the left side of the air inlet (5-1), a first hook (16) is hinged on the lower side edge of the first panel (14) through a universal joint, a first hanging ring (17) and a second hanging ring (18) are fixedly arranged on the left side wall of the shell (1) from front to back, the second hanging ring (18) is arranged on the rear side of the first hanging ring (17), and the first hook (16) is movably hung in the first hanging ring (17).

4. The advertising machine with the hidden heat dissipation mechanism as claimed in claim 1, wherein: the rear side wall of the right outer side wall of the shell (1) is hinged with a second panel (19) through a hinge, a second shutter (20) penetrates through the second panel (19), the second panel (19) covers the right side of the air outlet (5-6), a second hook (21) is hinged with the lower side edge of the second panel (19) through a universal joint, a third hanging ring (22) and a fourth hanging ring (23) are fixedly arranged on the right side wall of the shell (1) in the front and back direction, the fourth hanging ring (23) is arranged on the rear side of the third hanging ring (22), and the second hook (21) is movably hung in the third hanging ring (22).

5. The advertising machine with the hidden heat dissipation mechanism as claimed in claim 1, wherein: a water outlet (24) is arranged on the lower side wall of the shell (1) in a penetrating way, and a sealing cover (25) is screwed on the upper cover of the lower port of the water outlet (24) in a threaded way.

6. The advertising machine with the hidden heat dissipation mechanism as claimed in claim 1, wherein: the working principle is as follows: the external cold air enters the shell (1) through the air inlet (5-1), the heat generated by the playing unit (3) is conducted to the heat conducting plate (4), and then the cold air entering the shell (1) brings the heat on the heat conducting plate (4) out, and the hot air is discharged from the air outlet (5-6); the pin rod (5-14) is pulled out from the pin hole (5-13), the first sliding block (5-3) slides upwards, the first self-winding reel (5-4) retracts the first chain plate (5-5), the area of the air inlet (5-1) blocked by the first chain plate (5-5) is reduced, the opening area of the air inlet (5-1) is increased, the air inlet amount is increased, the first sliding block (5-3) slides upwards, the chain (5-12) is guided by the guide wheel set (5-11), the chain (5-12) synchronously drives the second sliding block (5-8) to slide downwards, the second self-winding reel (5-9) retracts the second chain plate (5-10), the opening area of the air outlet (5-6) is increased, the air exhaust amount of hot air in the shell (1) is increased, after the first sliding block (5-3) finishes sliding and adjusting the position, inserting a pin rod (5-14) into the pin hole (5-13), wherein the pin rod (5-14) props against the upper surface of the first sliding block (5-3) so that the first sliding block (5-3) cannot slide upwards again; the first scroll and the scroll pull the first chain plate (5-5) to further pull the first sliding block (5-3) upwards, and meanwhile, the second self-winding scroll (5-9) pulls the second sliding block (5-8) downwards through the second chain plate (5-10) and pulls the first sliding block (5-3) upwards through the chain (5-12), so that the sliding block cannot fall down due to self gravity; and the centrifugal fan (6-1) is turned on, the centrifugal fan (6-1) pumps out hot air accumulated inside the shell (1), and the hot air is discharged from the air outlet (5-6) through the outlet end of the centrifugal fan (6-1).