Dynamic lamp box for exhibition

Abstract

The invention belongs to the technical field of combined audio-visual advertising equipment, and particularly relates to a dynamic lamp box for exhibition, which comprises a supporting table, a visitor number confirmation feedback mechanism is arranged at the lower end of the supporting table, and a combined audio-visual display mechanism is fixedly arranged at the upper end of the supporting table. And a lamp box display mechanism is fixedly arranged at the upper end of the combined audio-visual display mechanism. According to the invention, the switching playing speed of the lamp box display mechanism can be automatically adjusted based on the number of watches, so that the time of the whole playing process is controlled, the playing rhythm of music and the change frequency of light can be automatically regulated and controlled, and the output volume of the sound in the exhibition can be automatically adjusted; the problem that noisy sound generated when many audiences exist is avoided, and then the content explained by voice is covered is solved, the heat dissipation performance in the lamp box can be automatically adjusted based on the playing speed and frequency, and the problem that heat accumulation of the LED lamp panel in the lamp box is accelerated, the heat dissipation performance cannot follow up, and stable use of the LED lamp panel is affected is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of combined audio-visual advertising equipment, and in particular relates to a dynamic light box for exhibition. Background Art

[0002] The dynamic light box for exhibition is a display tool with unique effects and appeal in the exhibition scene. It can present dynamic pictures or image changes, which can attract the audience's attention better than static displays. Through dynamic display methods, it gives people a stronger visual impact, makes exhibits or information more prominent, increases the fun and interactivity of the exhibition, and makes it easier for the audience to participate and immerse themselves in it. Different dynamic content and forms of expression can be customized according to the theme and needs of the exhibition.

[0003] At present, the dynamic light box has a relatively fixed rhythm of changes and a relatively fixed switching speed of the screen. When there are a large number of viewers, the audience queuing behind will have to wait too long, affecting the audience experience and the effect of the exhibition promotion. Moreover, when there are more viewers, the noise generated will be louder, which will cover up the content of the voice explanation, making it difficult for the audience to hear the specific words of the explanation, affecting the exhibition effect and causing dissatisfaction among the audience. Summary of the invention

[0004] The purpose of the present invention is to provide a dynamic light box for exhibition in view of the above problems.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a dynamic light box for exhibition, comprising a support platform, a visitor number confirmation feedback mechanism is provided at the lower end of the support platform, a combined audio-visual display mechanism is fixedly installed at the upper end of the support platform, a light box display mechanism is fixedly installed at the upper end of the combined audio-visual display mechanism, an interval switching trigger mechanism for controlling the action of the light box display mechanism is fixedly installed on the outer wall of the light box display mechanism, a playback complete confirmation mechanism is fixedly installed on the lower outer wall of the interval switching trigger mechanism, a synchronization adjustment mechanism electrically connected to the visitor number confirmation feedback mechanism is fixedly installed on the outer wall of the combined audio-visual display mechanism, the synchronization adjustment mechanism is used to control the trigger interval time of the interval switching trigger mechanism, the synchronization adjustment mechanism is also used to control the music rhythm of the combined audio-visual display mechanism and the light change frequency of the light box display mechanism, a volume adjustment mechanism is also fixedly installed on the outer wall of the synchronization adjustment mechanism, and the volume adjustment mechanism is used to control the size of the sound output in the combined audio-visual display mechanism, and a voice reminder and a PLC controller are also fixedly installed on one side of the upper end of the support platform.

[0006] In the above-mentioned dynamic light box for exhibition, the visitor number confirmation feedback mechanism includes a pedal with a semicircular structure, a plurality of pressure sensing plates are evenly fixedly mounted on the upper end of the pedal, and a plurality of light-emitting lamp beads are fixedly mounted on the outer wall of the pressure sensing plate.

[0007] In the above-mentioned dynamic light box for exhibition, the combined audio-visual display mechanism includes a display screen fixedly mounted on the upper end of a support platform, and a U-shaped mounting plate covering the outside of the display screen is also fixedly mounted on the upper end of the support platform, and two speakers are symmetrically fixedly mounted on the inner wall of the U-shaped mounting plate.

[0008] In the above-mentioned dynamic light box for exhibition, the light box display mechanism includes a box body fixedly connected to the upper end of a U-shaped mounting plate by a bracket, the front side of the box body is set as an open structure, an LED light board is fixedly installed inside the box body, and a heat conducting plate attached to the rear side of the LED light board is also fixedly installed on the inner wall of the box body, a plurality of heat dissipating fins are fixedly connected to the rear side of the heat conducting plate, a plurality of heat dissipating holes are opened on the surface of the heat dissipating fins, two circulating heat dissipating fans are symmetrically embedded in the side wall of the box body, and two frame plates are symmetrically fixedly inserted on the outer wall of the box body, and transmission rollers are rotatably connected at the four corners of the two frame plates, and a plurality of servo motors for driving the transmission rollers to rotate are installed on the outer wall of one of the frame plates, and the same advertising cloth is wound around the four transmission rollers.

[0009] In the above-mentioned dynamic light box for exhibition, the interval switching trigger mechanism includes a switching shell fixedly mounted on the outer wall of the bracket, the inner wall of the switching shell is rotatably connected with a vertically arranged reciprocating screw, the upper end of the switching shell is fixedly mounted with a rotating motor for driving the reciprocating screw to rotate, the rod wall of the reciprocating screw is threadedly sleeved with a reciprocating plate, one end of the reciprocating plate is fixedly connected with a pressing protrusion, and one side of the inner wall of the switching shell is fixedly mounted with a plurality of vertically distributed switching switches.

[0010] In the above-mentioned dynamic light box for exhibition, the playback complete confirmation mechanism includes a trigger round shell and a reduction gear box fixedly mounted on the outer wall of the lower end of the switching shell, the lower end of the reciprocating screw rod extends out of the lower end of the switching shell and is fixedly connected to the input end of the reduction gear box, a rotating shaft is rotatably connected at the center of the inner wall of the trigger round shell, the lower end of the rotating shaft passes through the lower end of the switching shell and is fixedly connected to the output end of the reduction gear box, an arc-shaped pressing block is fixedly connected to the shaft wall of the rotating shaft, and a confirmation switch is fixedly mounted on one side of the inner wall of the trigger round shell.

[0011] In the above-mentioned dynamic light box for exhibition, the synchronous adjustment mechanism includes an adjustment shell fixedly mounted on the outer wall of the U-shaped mounting plate, the upper end of the adjustment shell is movably sleeved with a plurality of lifting rods arranged front and rear, the lower ends of the plurality of lifting rods extend into the adjustment shell and are fixedly connected with a lifting plate, the upper end of the lifting plate and the top of the inner wall of the adjustment shell are fixedly mounted with a plurality of return springs sleeved outside the lifting rods, the upper end of the lifting plate is fixedly connected with a thrust permanent magnet plate, the top of the inner wall of the adjustment shell is fixedly mounted with a thrust electromagnetic plate, one side of the lifting plate is fixedly connected with a conductive contact, one side of the inner wall of the adjustment shell is fixedly mounted with a vertically arranged resistance rod, the other side of the lifting plate is fixedly connected with an adjustment ball head, the other side of the inner wall of the adjustment shell is fixedly mounted with a plurality of vertically distributed adjustment switches, and the bottom of the inner wall of the adjustment shell is also fixedly mounted with a special voice start switch.

[0012] In the above-mentioned dynamic light box for exhibition, the volume adjustment mechanism includes an L-shaped positioning plate fixedly mounted on the outer wall of the upper end of the adjustment shell, and the inner wall of the L-shaped positioning plate is fixedly mounted with a volume adjuster and a reduction transmission box of a knob-type structure, the output end of the reduction transmission box is fixedly connected to the input end of the volume adjuster, and the input end of the reduction transmission box is fixedly connected to a transmission gear, and the upper ends of multiple lifting rods are fixedly connected to the same extension plate, and the lower side of one end of the extension plate is fixedly connected to a transmission rack meshing with the transmission gear.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Through the support platform, visitor number confirmation feedback mechanism, light box display mechanism, synchronous adjustment mechanism, and interval switching trigger mechanism, the switching playback speed of the light box display mechanism can be automatically adjusted based on the number of viewers, thereby controlling the time of the entire playback process, speeding up the playback of the exhibition when there are many people, reducing the waiting time of subsequent viewers, ensuring the audience's experience effect, and improving the effect of exhibition promotion.

[0015] 2. Through the synchronous adjustment mechanism, combined audio-visual display mechanism, volume adjustment mechanism, and light box display mechanism, the music playing rhythm and the light changing frequency can be automatically adjusted based on the number of viewers. When there are many people, the music playing rhythm and the light changing frequency can be increased, and the playing speed can be automatically matched, so that the playing effect is not abrupt, and the audience's viewing experience is better.

[0016] 3. Through the set volume adjustment mechanism and combined audio-visual display mechanism, the output volume of the audio in the exhibition can be automatically adjusted based on the number of viewers. When there are many viewers, the output volume will be automatically increased to avoid the loud noise generated when there are many viewers, which will cover the content of the voice explanation, making it difficult for the audience to hear the specific explanation words, affecting the exhibition effect and causing audience dissatisfaction.

[0017] 4. Through the set light box display mechanism and synchronous adjustment mechanism, the heat dissipation performance inside the light box can be automatically adjusted based on the speed and frequency of the playback. When the playback speed is high and the rhythm is fast, the heat dissipation performance can be improved simultaneously to avoid the problem of accelerated heat accumulation of the LED light board inside the light box and the inability to keep up with the heat dissipation performance, which affects the stable use of the LED light board.

[0018] In summary: the present invention can automatically adjust the switching playback speed of the light box display mechanism based on the number of viewers, and then control the time of the entire playback process, reduce the waiting time of subsequent viewers, and ensure the audience's experience effect. It can automatically control the playback rhythm of music and the frequency of light changes. It can automatically adjust the output volume of the audio in the exhibition to avoid the loud noisy sound generated when there are many viewers, which will then cover up the content of the voice explanation, making it difficult for the audience to hear the specific explanation words, affecting the exhibition effect and causing audience dissatisfaction. It can automatically adjust the heat dissipation performance inside the light box based on the playback speed and frequency to avoid the problem of accelerated heat accumulation of the LED light board inside the light box and the heat dissipation performance not keeping up, which affects the stable use of the LED light board. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a dynamic light box for exhibition provided by the present invention;

[0020] Figure 2 It is a structural schematic diagram of a visitor number confirmation feedback mechanism of a dynamic light box for exhibition provided by the present invention;

[0021] Figure 3 It is a structural schematic diagram of a combined audio-visual display mechanism of a dynamic light box for exhibition provided by the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of a light box display mechanism of a dynamic light box for exhibition provided by the present invention;

[0023] Figure 5 yes Figure 4 A schematic diagram of the side cross-sectional structure of the middle box;

[0024] Figure 6 It is a cross-sectional structural schematic diagram of an interval switching trigger mechanism of a dynamic light box for exhibition provided by the present invention;

[0025] Figure 7 It is a cross-sectional structural schematic diagram of a playback complete confirmation mechanism of a dynamic light box for exhibition provided by the present invention;

[0026] Figure 8 The present invention is a schematic cross-sectional structural diagram of a synchronous adjustment mechanism of a dynamic light box for exhibition.

[0027] In the figure: 1 support platform, 2 visitor number confirmation feedback mechanism, 21 pedal, 22 pressure sensing plate, 23 luminous lamp beads, 3 combined audio-visual display mechanism, 31 display screen, 32 U-shaped mounting plate, 33 sound, 4 light box display mechanism, 41 box body, 42 LED light board, 43 heat conduction plate, 44 heat dissipation fins, 45 heat dissipation holes, 46 circulating heat dissipation fan, 47 frame plate, 48 transmission roller, 49 servo motor, 410 advertising cloth, 5 interval switching trigger mechanism, 51 switching shell, 52 reciprocating screw rod, 53 rotating motor, 54 reciprocating plate, 55 pressing convex head, 56 switching switch, 6 playback completed Full confirmation mechanism, 61 trigger round shell, 62 reduction gear box, 63 rotating shaft, 64 arc-shaped pressing block, 65 confirmation switch, 7 synchronous adjustment mechanism, 71 adjustment shell, 72 lifting rod, 73 lifting plate, 74 return spring, 75 thrust permanent magnet plate, 76 thrust electromagnetic plate, 77 conductive contact piece, 78 resistance rod, 79 adjustment ball head, 710 adjustment switch, 711 special voice start switch, 8 volume adjustment mechanism, 81 L-shaped positioning plate, 82 volume regulator, 83 reduction transmission box, 84 transmission gear, 85 extension plate, 86 transmission rack, 9 voice reminder, 10 PLC controller. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] like Figure 1-Figure 8 As shown, a dynamic light box for exhibition includes a support platform 1, a visitor number confirmation feedback mechanism 2 is provided at the lower end of the support platform 1, the visitor number confirmation feedback mechanism 2 includes a semicircular structure pedal 21, a plurality of pressure sensing plates 22 are evenly fixedly installed on the upper end of the pedal 21, and a plurality of light-emitting lamp beads 23 are fixedly installed on the outer wall of the pressure sensing plate 22.

[0030] A combined audio-visual display mechanism 3 is fixedly mounted on the upper end of the support platform 1, and the combined audio-visual display mechanism 3 includes a display screen 31 fixedly mounted on the upper end of the support platform 1. A U-shaped mounting plate 32 covering the outside of the display screen 31 is also fixedly mounted on the upper end of the support platform 1, and two speakers 33 are symmetrically fixedly mounted on the inner wall of the U-shaped mounting plate 32.

[0031] A light box display mechanism 4 is fixedly installed on the upper end of the combined audio-visual display mechanism 3. The light box display mechanism 4 includes a box body 41 fixedly connected to the upper end of the U-shaped mounting plate 32 by a bracket. The front side of the box body 41 is set as an open structure. An LED light board 42 is fixedly installed inside the box body 41. A heat conducting plate 43 attached to the rear side of the LED light board 42 is also fixedly installed on the inner wall of the box body 41. A plurality of heat dissipating fins 44 are fixedly connected to the rear side of the heat conducting plate 43. A plurality of heat dissipating holes 45 are opened on the surface of the heat dissipating fins 44. Two circulating heat dissipating fans 46 are symmetrically embedded in the side wall of the box body 41. Two frame plates 47 are symmetrically fixedly inserted on the outer wall of the box body 41. Transmission rollers 48 are rotatably connected at the four corners of the two frame plates 47. A plurality of servo motors 49 for driving the transmission rollers 48 to rotate are installed on the outer wall of one of the frame plates 47. The same advertising cloth 410 is wound around the four transmission rollers 48.

[0032] An interval switching trigger mechanism 5 for controlling the action of the light box display mechanism 4 is fixedly installed on the outer wall of the light box display mechanism 4. The interval switching trigger mechanism 5 includes a switching shell 51 fixedly installed on the outer wall of the bracket. The inner wall of the switching shell 51 is rotatably connected with a vertically arranged reciprocating screw 52. A rotating motor 53 for driving the reciprocating screw 52 to rotate is fixedly installed on the upper end of the switching shell 51. A reciprocating plate 54 is threadedly sleeved on the rod wall of the reciprocating screw 52. A pressing protrusion 55 is fixedly connected to one end of the reciprocating plate 54. A plurality of vertically distributed switching switches 56 are fixedly installed on one side of the inner wall of the switching shell 51.

[0033] A playback complete confirmation mechanism 6 is fixedly installed on the outer wall of the lower end of the interval switching trigger mechanism 5, and the playback complete confirmation mechanism 6 includes a trigger round shell 61 and a reduction gear box 62 fixedly installed on the outer wall of the lower end of the switching shell 51. The lower end of the reciprocating screw 52 extends out of the lower end of the switching shell 51 and is fixedly connected to the input end of the reduction gear box 62. A rotating shaft 63 is rotatably connected to the center of the inner wall of the trigger round shell 61. The lower end of the rotating shaft 63 passes through the lower end of the switching shell 51 and is fixedly connected to the output end of the reduction gear box 62. An arc-shaped pressing block 64 is fixedly connected to the shaft wall of the rotating shaft 63, and a confirmation switch 65 is fixedly installed on one side of the inner wall of the trigger round shell 61.

[0034] The outer wall of the combined audio-visual display mechanism 3 is fixedly provided with a synchronous adjustment mechanism 7 which is electrically connected to the visitor number confirmation feedback mechanism 2. The synchronous adjustment mechanism 7 comprises an adjustment shell 71 which is fixedly provided on the outer wall of the U-shaped mounting plate 32. The upper end of the adjustment shell 71 is movably sleeved with a plurality of lifting rods 72 which are arranged front and rear. The lower ends of the plurality of lifting rods 72 extend into the adjustment shell 71 and are fixedly connected with a lifting plate 73. The upper end of the lifting plate 73 and the top of the inner wall of the adjustment shell 71 are fixedly provided with a plurality of return springs 74 which are sleeved outside the lifting rods 72. A thrust permanent magnet plate 75 is fixedly connected to the upper end of the lifting plate 73, a thrust electromagnetic plate 76 is fixedly installed on the top of the inner wall of the adjusting shell 71, a conductive connector 77 is fixedly connected to one side of the lifting plate 73, a vertically arranged resistance rod 78 is fixedly installed on one side of the inner wall of the adjusting shell 71, an adjusting ball head 79 is fixedly connected to the other side of the lifting plate 73, a plurality of vertically distributed adjusting switches 710 are fixedly installed on the other side of the inner wall of the adjusting shell 71, and a special voice start switch 711 is also fixedly installed on the bottom of the inner wall of the adjusting shell 71.

[0035] The synchronous adjustment mechanism 7 is used to control the trigger interval time of the interval switching trigger mechanism 5. The synchronous adjustment mechanism 7 is also used to control the music rhythm of the combined audio-visual display mechanism 3 and the light change frequency of the light box display mechanism 4. The outer wall of the synchronous adjustment mechanism 7 is also fixedly provided with a volume adjustment mechanism 8. The volume adjustment mechanism 8 includes an L-shaped positioning plate 81 fixedly provided on the outer wall of the upper end of the adjustment shell 71. The inner wall of the L-shaped positioning plate 81 is fixedly provided with a volume adjuster 82 and a reduction transmission box 83 of a knob-type structure. The output end of the reduction transmission box 83 is fixedly connected to the input end of the volume adjuster 82. The input end of the reduction transmission box 83 is fixedly connected to a transmission gear 84. The upper ends of the multiple lifting rods 72 are fixedly connected to the same extension plate 85. The lower side of one end of the extension plate 85 is fixedly connected to a transmission rack 86 meshing with the transmission gear 84.

[0036] The volume adjustment mechanism 8 is used to control the volume of the sound output in the combined audio-visual display mechanism 3 , and a voice reminder 9 and a PLC controller 10 are also fixedly mounted on one side of the upper end of the support platform 1 .

[0037] The operating principle of the present invention is described as follows: the display screen 31 is used to play scrolling related video text to make the entire exhibition more dynamic, the audio 33 is used to play music and related voice explanations to enhance the atmosphere of the exhibition, the LED light board 42 in the light box emits light to illuminate the content of the advertising cloth 410, and the LED light board 42 can be continuously changed through a pre-set program to enhance the dynamic nature of the advertising and increase the attractiveness to visitors. When visitors visit, they stand on the pressure sensing plate 22 at the upper end of the pedal 21. When the pressure sensing plate 22 is stepped on, the PLC controller 10 controls the luminous lamp beads 23 on the side wall of the pressure sensing plate 22 to light up, making visitors more interested in standing on the pressure sensing plate 22 , and thus the number of visitors can be fed back more accurately. After receiving the stepping signal, the pressure sensing plate 22 feeds back the signal to the PLC controller 10. The number of pressure sensing plates 22 stepped on roughly indicates the number of visitors in the viewing state. The PLC controller 10 controls the power supply device to supply power to the thrust electromagnetic plate 76 according to the number of pressure sensing plates 22 stepped on. The more the pressure sensing plates 22 are stepped on, the greater the power supply current of the thrust electromagnetic plate 76, and thus the stronger the magnetism of the thrust electromagnetic plate 76. The thrust electromagnetic plate 76 cooperates with the thrust permanent magnet plate 75 to drive the lifting plate 73 to move downward along the lifting rod 72 to overcome the elastic force of the reset spring 74. The greater the sliding distance of the conductive contact 77 on the resistor rod 78, the greater the resistance of the resistor rod 78. The smaller the access resistance, the smaller the access resistance. Since the conductive contact piece 77 and the resistor rod 78 are connected in series on the power supply circuit of the rotating motor 53, and the rotating motor 53 is a DC motor, when the number of viewers is large and the access resistance of the resistor rod 78 becomes smaller, the power supply current of the rotating motor 53 increases, the speed of the rotating motor 53 increases, and the rotating motor 53 drives the reciprocating screw 52 to rotate. Through the threaded sleeve effect of the reciprocating screw 52 and the reciprocating plate 54, the reciprocating plate 54 drives the pressing protrusion 55 to move in the switching shell 51. When the pressing protrusion 55 acts on the switching switch 56, the PLC controller 10 controls the servo motor 49 to drive the transmission roller 48 to rotate, so that the other side of the advertising cloth 410 rotates to the front side of the box body 41 to display different advertising contents. Specifically, the more visitors there are, the faster the switching speed of the content displayed on the advertising cloth 410 is, the reciprocating screw 52 drives the input end of the reduction gear box 62 to rotate synchronously, and then drives the rotating shaft 63 to rotate at a reduced speed, and the rotating shaft 63 drives the arc-shaped pressing block 64 to move slowly in the trigger round shell 61 until the arc-shaped pressing block 64 acts on the confirmation switch 65, indicating that all the content has been displayed. At this time, the PLC controller 10 controls the voice reminder 9 to remind the visitors that the playback has been completed and wait for the next batch of visitors to enter and watch. The switching playback speed of the light box display mechanism 4 can be automatically adjusted based on the number of viewers, and then the time of the entire playback process can be controlled. When there are many people, the speed of playing the exhibition is accelerated to reduce the waiting time of subsequent viewers.Ensure the audience's experience and improve the effect of exhibition publicity;

[0038] When the number of visitors increases, the distance that the lifting plate 73 moves downward increases, so that the adjusting ball head 79 acts on the adjusting switch 710 at the lower side, thereby adjusting the light change frequency of the LED light board 42 and the music playing rhythm. The adjusting switch 710 at the lower side feeds back a signal to the PLC controller 10, and the PLC controller 10 controls the LED light board 42 to operate at a higher light change frequency, and controls the audio 33 to access faster-paced music to create an atmosphere. The music playing rhythm and the light changing frequency can be automatically adjusted based on the number of viewers, and the music playing rhythm and the light changing frequency can be increased when there are many people, and the playing speed is automatically matched, so that the playing effect is not abrupt, and the audience's viewing experience is better;

[0039] The lifting rod 72 cooperates with the extension plate 85 to drive the transmission rack 86 to move downward synchronously. When the number of visitors increases, the transmission rack 86 moves downward a greater distance. The meshing action of the transmission rack 86 and the transmission gear 84 cooperates with the reduction transmission box 83 to drive the input end of the voice reminder 9 to rotate a greater angle, thereby making the volume of the sound 33 larger. The output volume of the sound 33 in the exhibition can be automatically adjusted based on the number of viewers. When the number of viewers is large, the output volume is automatically increased to avoid the problem of loud noises generated when there are many viewers, which will cover the content of the voice explanation, making it difficult for the audience to hear the specific explanation words, affecting the exhibition effect, and causing audience dissatisfaction.

[0040] When the number of visitors reaches more than 90%, the magnetism generated by the thrust electromagnetic plate 76 can push the lifting plate 73 down a sufficient distance to act on the special voice start switch 711, so that after the arc-shaped pressing block 64 acts on the confirmation switch 65, the PLC controller 10 controls the voice reminder 9 to not only prompt that the playback is completed, but also actively guides the visitors to leave relatively quickly by voice, so as to help the next batch of visitors to watch more efficiently;

[0041] The conductive contact piece 77 and the resistor rod 78 are also connected in series to the power supply circuit of the circulating heat dissipation fan 46. The two circulating heat dissipation fans 46 form a heat dissipation channel in the box body 41. The heat conducting plate 43 extracts the heat generated by the LED light board 42 when it is working, and transmits it through a plurality of heat dissipation fins 44. The heat dissipation channel takes the heat on the heat dissipation fins 44 out of the box body 41 through the air, thereby realizing efficient heat dissipation of the LED light board 42. When the number of visitors increases and the frequency of light changes of the LED light board 42 becomes faster, the heat generated by the LED light board 42 becomes greater. At this time, since the connection resistance of the resistor rod 78 becomes smaller, the power supply current of the circulating cooling fan 46 increases, and the circulating cooling fan 46 is also a DC fan, so the power of the circulating cooling fan 46 is increased, and the heat dissipation operation of the LED light board 42 is accelerated. The heat dissipation performance inside the light box can be automatically adjusted based on the frequency of the light change speed, and the heat dissipation performance can be improved simultaneously when the playback speed and rhythm are high, thereby avoiding the problem of accelerated heat accumulation of the LED light board 42 inside the light box and the heat dissipation performance cannot keep up, affecting the stable use of the LED light board 42.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dynamic light box for exhibition, comprising a support platform (1), characterized in that: The lower end of the support platform (1) is provided with a visitor number confirmation feedback mechanism (2); the upper end of the support platform (1) is fixedly provided with a combined audio-visual display mechanism (3); the upper end of the combined audio-visual display mechanism (3) is fixedly provided with a light box display mechanism (4); the outer wall of the light box display mechanism (4) is fixedly provided with an interval switching trigger mechanism (5) for controlling the action of the light box display mechanism (4); the lower outer wall of the interval switching trigger mechanism (5) is fixedly provided with a playback complete confirmation mechanism (6); the outer wall of the combined audio-visual display mechanism (3) is fixedly provided with a plurality of electronic components corresponding to the visitor number confirmation feedback mechanism (2). An electrically controlled synchronous adjustment mechanism (7) is provided, the synchronous adjustment mechanism (7) being used to control the trigger interval time of the interval switching trigger mechanism (5), the synchronous adjustment mechanism (7) being also used to control the music rhythm of the combined audio-visual display mechanism (3) and the light change frequency of the light box display mechanism (4), the outer wall of the synchronous adjustment mechanism (7) is also fixedly provided with a volume adjustment mechanism (8), the volume adjustment mechanism (8) being used to control the volume of the sound output in the combined audio-visual display mechanism (3), and a voice reminder (9) and a PLC controller (10) being also fixedly provided on one side of the upper end of the support platform (1).

2. The dynamic light box for exhibition according to claim 1, characterized in that: The visitor number confirmation feedback mechanism (2) comprises a pedal (21) of a semicircular structure, a plurality of pressure sensing plates (22) are evenly fixedly mounted on the upper end of the pedal (21), and a plurality of light-emitting lamp beads (23) are fixedly mounted on the outer wall of the pressure sensing plate (22).

3. The dynamic light box for exhibition according to claim 2, characterized in that: The combined audio-visual display mechanism (3) comprises a display screen (31) fixedly mounted on the upper end of a support platform (1); a U-shaped mounting plate (32) is also fixedly mounted on the upper end of the support platform (1) and covers the display screen (31); two speakers (33) are symmetrically fixedly mounted on the inner wall of the U-shaped mounting plate (32).

4. The dynamic light box for exhibition according to claim 3, characterized in that: The light box display mechanism (4) comprises a box body (41) fixedly connected to the upper end of a U-shaped mounting plate (32) via a bracket, the front side of the box body (41) being set as an open structure, an LED light board (42) being fixedly mounted inside the box body (41), a heat conducting plate (43) attached to the rear side of the LED light board (42) being fixedly mounted on the inner wall of the box body (41), a plurality of heat dissipation fins (44) being fixedly connected to the rear side of the heat conducting plate (43), and the surfaces of the heat dissipation fins (44) A plurality of heat dissipation holes (45) are provided, two circulating heat dissipation fans (46) are symmetrically embedded in the side wall of the box body (41), two frame plates (47) are symmetrically fixedly inserted in the outer wall of the box body (41), and transmission rollers (48) are rotatably connected at the four corners of the two frame plates (47), and a plurality of servo motors (49) for driving the transmission rollers (48) to rotate are installed on the outer wall of one of the frame plates (47), and the same advertising cloth (410) is wound around the four transmission rollers (48).

5. The dynamic light box for exhibition according to claim 4, characterized in that: The interval switching trigger mechanism (5) comprises a switching shell (51) fixedly mounted on the outer wall of the bracket, the inner wall of the switching shell (51) is rotatably connected to a vertically arranged reciprocating screw rod (52), a rotating motor (53) for driving the reciprocating screw rod (52) to rotate is fixedly mounted on the upper end of the switching shell (51), a reciprocating plate (54) is threadedly sleeved on the rod wall of the reciprocating screw rod (52), one end of the reciprocating plate (54) is fixedly connected to a pressing convex head (55), and a plurality of vertically distributed switching switches (56) are fixedly mounted on one side of the inner wall of the switching shell (51).

6. The dynamic light box for exhibition according to claim 5, characterized in that: The playback complete confirmation mechanism (6) comprises a triggering round shell (61) fixedly mounted on the outer wall of the lower end of the switching shell (51) and a reduction gear box (62); the lower end of the reciprocating screw rod (52) extends out of the lower end of the switching shell (51) and is fixedly connected to the input end of the reduction gear box (62); a rotating shaft (63) is rotatably connected at the center of the inner wall of the triggering round shell (61); the lower end of the rotating shaft (63) penetrates the lower end of the switching shell (51) and is fixedly connected to the output end of the reduction gear box (62); an arc-shaped pressing block (64) is fixedly connected to the shaft wall of the rotating shaft (63); and a confirmation switch (65) is fixedly mounted on one side of the inner wall of the triggering round shell (61).

7. The dynamic light box for exhibition according to claim 6, characterized in that: The synchronous adjustment mechanism (7) comprises an adjustment shell (71) fixedly mounted on the outer wall of the U-shaped mounting plate (32); a plurality of lifting rods (72) arranged front and rear are movably inserted into the upper end of the adjustment shell (71); the lower ends of the plurality of lifting rods (72) extend into the adjustment shell (71) and are fixedly connected to a lifting plate (73); a plurality of return springs (74) sleeved outside the lifting rods (72) are fixedly mounted on the upper end of the lifting plate (73) and the top of the inner wall of the adjustment shell (71); and a thrust permanent magnet plate (75) is fixedly connected to the upper end of the lifting plate (73). A thrust electromagnetic plate (76) is fixedly mounted on the top of the inner wall of the adjustment shell (71), a conductive contact piece (77) is fixedly connected to one side of the lifting plate (73), a vertically arranged resistance rod (78) is fixedly mounted on one side of the inner wall of the adjustment shell (71), an adjustment ball head (79) is fixedly connected to the other side of the lifting plate (73), a plurality of vertically distributed adjustment switches (710) are fixedly mounted on the other side of the inner wall of the adjustment shell (71), and a special voice start switch (711) is also fixedly mounted on the bottom of the inner wall of the adjustment shell (71).

8. The dynamic light box for exhibition according to claim 7, characterized in that: The volume adjustment mechanism (8) comprises an L-shaped positioning plate (81) fixedly mounted on the outer wall of the upper end of the adjustment shell (71); a volume adjuster (82) of a knob-type structure and a reduction transmission box (83) are fixedly mounted on the inner wall of the L-shaped positioning plate (81); an output end of the reduction transmission box (83) is fixedly connected to an input end of the volume adjuster (82); the input end of the reduction transmission box (83) is fixedly connected to a transmission gear (84); the upper ends of the plurality of lifting rods (72) are fixedly connected to the same extension plate (85); and a transmission rack (86) meshing with the transmission gear (84) is fixedly connected to the lower side of one end of the extension plate (85).

Images