A double-sided light box

Abstract

The application provides a double-sided lamp box, comprising a lamp box body, a lifting rod, a clamping piece and a first driving assembly, wherein the lamp box body comprises a mounting frame and a light-emitting panel arranged in the mounting frame; the lifting rod is located at one side of the light-emitting panel and is slidingly connected to the mounting frame; the clamping piece is used for clamping an advertising canvas and is fixedly arranged on the lifting rod; and the first driving assembly is used for driving the lifting rod to slide in the vertical direction. The application can improve the installation convenience of the advertising canvas on the advertising lamp box.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of advertising, and particularly to a double-sided light box. BACKGROUND

[0002] An advertising light board is composed of LED lamp tubes on a substrate to form characters and patterns, which serves to display information. The advertising light board is widely used in various commercial activities and daily production and life, and is an important carrier for transmitting advertising information.

[0003] In order to improve the utilization rate of the advertising light board, both sides of the advertising light board are usually used. The side of the advertising light board on which the LED lamp tubes are installed displays fixed information with high utilization rate, and the side of the advertising light board on which the LED lamp tubes are not installed is often used to arrange an advertising canvas. The existing light box structure is to set a fixed clamp on the top of the advertising light box, and the height of the advertising light box is mostly more than 2m. Workers need to use a ladder to climb to the top of the advertising light box to clamp the top of the advertising canvas on the fixed clamp on the top of the advertising light box. However, the climbing operation has a high risk coefficient, and the operation with the help of the ladder also has many inconveniences. SUMMARY

[0004] In order to improve the installation convenience of the advertising canvas on the advertising light box, the present application provides a double-sided light box.

[0005] The present application provides a double-sided light box, which adopts the following technical scheme:

[0006] A double-sided light box comprises a light box body, wherein the light box body comprises a mounting frame and a light-emitting panel arranged in the mounting frame;

[0007] A lifting rod is arranged on one side of the light-emitting panel and is slidingly connected to the mounting frame;

[0008] A clamping piece is arranged on the lifting rod and is used to clamp an advertising canvas;

[0009] A first driving assembly is arranged and is used to drive the lifting rod to slide in the vertical direction. The first driving assembly comprises a pull rope and a reversing pulley. The reversing pulley is fixed to the top of the mounting frame. One end of the pull rope is connected to the lifting rod, and the other end of the pull rope extends towards the bottom of the mounting frame after passing through the reversing pulley.

[0010] The light-emitting panel provides a light source for the light box body, the advertising canvas is clamped and fixed on the lifting rod by the clamp, one end of the pull rope is fixedly connected with the lifting rod, and the operator can drive the lifting rod to vertically slide upward by stretching the end of the pull rope away from the lifting rod and sliding the pull rope. When the lifting rod needs to be installed on the top of the mounting frame, the lifting rod is driven to vertically slide upward to a predetermined height by pulling the pull rope, and then the end of the pull rope away from the lifting rod is tied to the mounting frame. When the lifting rod needs to be lowered, the end of the pull rope tied to the mounting frame is untied, the lifting rod can vertically slide downward under the action of gravity, and the operator can clamp and fix the advertising canvas on the lifting rod by using the clamp, and then pull the pull rope to make the lifting rod and the advertising canvas rise, so that the operator does not need to climb.

[0011] Optionally, one end of the pull rope away from the lifting rod is fixed with a pull ring, a positioning column is fixed on the outer wall of the mounting frame, and the pull ring can be sleeved on the positioning column.

[0012] By adopting the above technical scheme, the pull ring is arranged to facilitate the operator to pull the pull rope, the positioning column is arranged to limit the pull ring, and the pull ring is sleeved on the positioning column to prevent the pull rope from sliding; when the pull ring is sleeved on the positioning column, the pull rope is locked, so that the lifting rod is fixed at a certain height.

[0013] Optionally, the light-emitting panel divides the mounting frame into two box slots, and the lifting rod is located in one of the box slots.

[0014] An opening of the box slot is provided with a cover, the cover comprises a cover frame and a visible glass plate arranged in the cover frame, and one end of the cover frame is rotationally connected with the mounting frame.

[0015] By adopting the above technical scheme, the light-emitting panel divides the mounting frame into two box slots, and the box slot provides a containing space for the advertising canvas; the cover is arranged to open or close the opening of the box slot, and to protect the objects in the box slot. One end of the cover frame is rotationally connected with the mounting frame, and the visible glass is arranged so that the operator can observe the advertising canvas from outside the light box when the cover is closed.

[0016] Optionally, a first driving member for driving the cover frame to rotate away from the mounting frame is arranged on the mounting frame.

[0017] By adopting the above technical scheme, the first driving member is arranged to drive the cover frame to rotate away from the mounting frame, so as to drive the cover to rotate away from the mounting frame and open the box slot.

[0018] Optionally, the first driving member comprises a gas spring, the gas spring comprises a pressure cylinder and a piston rod, one end of the pressure cylinder is hinged to the outer side wall of the mounting frame; one end of the piston rod is provided through the piston rod and is hinged to the piston rod, and the other end of the piston rod is hinged to the cover frame.

[0019] By adopting the above technical scheme, the filling gas in the pressure cylinder can drive the piston rod to slide away from the pressure rod, one end of the pressure cylinder is hinged to the outer side wall of the mounting frame, and one end of the piston rod is hinged to the cover frame. When the piston rod slides away from the pressure cylinder, the cover frame can be pushed to rotate away from the mounting frame. After the piston rod slides to the end of the stroke, the cover frame can be supported.

[0020] Optionally, one end of the mounting frame is provided with a locking member for locking the cover frame, and the locking member comprises a connecting rod lock.

[0021] The connecting rod lock comprises an operating box and a locking connecting rod slidingly connected to the operating box, a trigger rod for driving the locking connecting rod to slide is rotatably connected to the operating box, one end of the locking connecting rod away from the operating box is provided with a locking block, and the cover frame is provided with a positioning groove for inserting the locking block.

[0022] By adopting the above technical scheme, when it is necessary to close the opening of the box groove with the box cover, the operator can push the box cover to rotate the box cover away from the mounting frame to abut against the outer side wall of the mounting frame. Rotate the trigger rod to make the locking connecting rod slide away from the operating box until the locking block slides into the positioning groove of the cover frame, so as to lock the box cover, so that the box cover can be covered on the opening of the box groove.

[0023] Optionally, the mounting frame is further provided with a winding device, and the winding device comprises a winding assembly and a second driving assembly.

[0024] The winding assembly comprises a winding roller and a fixing member for clamping the advertising canvas, the winding roller is detachably connected to the mounting frame, and the winding roller is located on the side of the box groove away from the reversing pulley, and the second driving assembly is used to drive the winding roller to rotate.

[0025] By adopting the above technical scheme, when the advertising canvas is hung on the lifting rod through the clamping member, the end of the advertising canvas away from the lifting rod can be fixed on the winding roller by the fixing member; when the lifting rod slides down, the second driving assembly drives the winding roller to rotate, so that the winding roller winds the falling advertising canvas into a roll shape, which is convenient for the operator to take.

[0026] Optionally, a containing groove is formed in the outer side wall of the winding roller, the fixing member is slidingly arranged on the winding roller, and the fixing member comprises a sliding block and a pressing plate fixed to one side of the sliding block.

[0027] The end face of the winding roller is provided with an adjusting groove for sliding of the sliding block, and the pressing plate is slidingly arranged in the accommodating groove.

[0028] According to the technical scheme, the end of the advertising canvas away from the lifting rod is arranged in the accommodating groove, the sliding block drives the pressing plate to move downward, and the pressing plate tightly presses the side edge of the advertising canvas in the accommodating groove, so that the end of the advertising canvas is fixed on the winding roller. When the winding of the advertising canvas on the winding roller is completed to obtain a canvas roll, the winding roller is removed from the mounting frame, the sliding block is slid, and the pressing plate slides away from the advertising canvas, so that the canvas can be pulled out from the winding roller along the axis direction of the winding roller.

[0029] Optionally, the second driving assembly comprises a first gear and a second gear which are engaged with each other, the first gear is coaxially arranged on one end of the winding roller, and the second gear is rotationally connected to the mounting frame; the second gear is further engaged with a rack, and the rack is slidingly connected to the mounting frame; a second driving member is slidingly arranged on the mounting frame, and the second driving member is used to drive the rack to slide.

[0030] According to the technical scheme, the lifting rod is removed from the limiting column, the advertising canvas moves downward, the second driving member drives the rack to slide upward, the first gear engaged with the rack rotates under the driving of the rack, the first gear drives the second gear to rotate, and the winding roller is indirectly driven to rotate, so that the advertising canvas is wound.

[0031] Optionally, the second driving assembly further comprises a driving rope connected to one end of the rack, and the second driving member comprises a driving block slidingly arranged on the mounting frame, and a trigger slidingly arranged below the lifting rod and used to drive the driving block to slide in the vertical direction.

[0032] According to the technical scheme, the driving block is arranged below the lifting rod, and when the lifting rod slides downward, the driving block can be driven to slide downward. When the lifting rod slides to contact the trigger, the trigger can drive the driving block to vertically move upward, so as to indirectly drive the rack to vertically slide upward.

[0033] In summary, the present application has at least one of the following beneficial effects:

[0034] 1. In the present application, the lifting rod and the clamping member are arranged to realize the installation of the advertising canvas in the lamp box. The lifting rod is lifted by the first driving assembly, so that the height of the lifting rod can be adjusted, the advertising canvas can be conveniently installed or removed on the lifting rod, the operator does not need to climb when working, and the safety of the work is improved.

[0035] 2. In the application, the box cover is opened by setting the gas spring. When the connecting rod lock is unlocked, the piston rod slides away from the pressure rod under the action of the gas filled in the pressure cylinder, so as to open the box cover, and the automatic opening action of the box cover is realized;

[0036] 3. In the application, the winding assembly and the second driving assembly are arranged. When the pull ring is taken off from the limiting column, the lifting rod moves downward to drive the driving block to slide downward. The rack slides under the action of the driving block and the driving rope, so that the first gear and the second gear rotate. The winding roller winds the hanging advertising canvas under the action of the second driving assembly, so as to realize the storage of the advertising canvas. The winding roller and the mounting frame are detachably connected, so that the operator can take down the advertising canvas from the winding roller. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is the front view structural schematic diagram of embodiment 1 of the application;

[0038] Figure 2 is the explosion structural schematic diagram of embodiment 1 of the application;

[0039] Figure 3 is Figure 2 the local enlarged structural schematic diagram of A in the figure;

[0040] Figure 4 is Figure 2 the local enlarged structural schematic diagram of B in the figure;

[0041] Figure 5 is Figure 2 the local enlarged structural schematic diagram of C in the figure;

[0042] Figure 6 is the overall structural schematic diagram when the one side box cover of embodiment 2 of the application is opened;

[0043] Figure 7 is the local enlarged structural schematic diagram of the winding roller mounting structure of embodiment 2 of the application;

[0044] Figure 8 is the local structural schematic diagram of the winding roller;

[0045] Figure 9 is Figure 6 the local enlarged structural schematic diagram of D in the figure;

[0046] Figure 10 is Figure 6 the local enlarged structural schematic diagram of E in the figure;

[0047] Explanation of reference signs: 1, light box body; 11, main frame; 111, mounting plate; 112, inner recessed slide; 12, sub-frame; 121, mounting hole; 1211, first hole section; 1212, second hole section; 13, support base; 14, slide rail; 15, positioning column; 151, positioning baffle; 16, light-emitting panel; 17, box groove; 18, box cover; 181, cover frame; 1811, positioning groove; 182, visible glass plate; 2, lifting rod; 3, clamping piece; 4, first driving assembly; 41, pull rope; 42, reversing pulley; 43, pull ring; 5, gas spring; 51, pressure cylinder; 52, piston rod; 6, connecting rod lock; 61, operation box; 62, locking connecting rod; 621, locking block; 63, trigger lever; 7, winding device; 71, winding assembly; 711, winding roller; 7111, rotating shaft; 7112, matching key; 7113, containing strip groove; 7114, adjusting groove; 72, fixing piece; 721, sliding block; 722, abutting plate; 8, second driving assembly; 81, first gear; 82, second gear; 83, rack; 84, driving rope; 85, driving block; 9, trigger sliding block. DETAILED DESCRIPTION

[0048] The following will be described in detail below with reference to the accompanying drawings. Figures 1-10 The present application is further described in detail.

[0049] Example 1

[0050] The present application provides a double-sided light box.

[0051] Reference Figure 1 And Figure 2 A double-sided light box includes a light box body 1, the light box body 1 includes a mounting frame and a light-emitting panel 16 fixedly arranged in the mounting frame, the mounting frame includes a main frame 11 and a sub-frame 12 arranged on both sides of the main frame 11, in the present embodiment, the main frame 11 and the sub-frame 12 are both arranged in the form of a rectangular frame body. The sub-frame 12 is fixedly connected to the main frame 11, and the main frame 11 is integrally formed with a support base 13 at the bottom. An installation ring groove is formed on the inner side wall of the main frame 11, and the light-emitting panel 16 is located in the installation ring groove of the main frame 11. Ventilation holes are formed on the inner side wall of the installation ring groove, which facilitates heat dissipation when the light-emitting panel 16 is operating. The outer side wall of the light-emitting panel 16 and the sub-frame 12 form a box groove 17, and the box groove 17 is specifically provided with two box grooves.

[0052] Reference Figure 1 And Figure 2, the opening of the box slot 17 is provided with a box cover 18, the box cover 18 comprises a cover frame 181 and a visible glass plate 182 fixed in the cover frame 181. One end of the cover frame 181 is hingedly connected with the main frame 11. When the box cover 18 is turned to the vertical state in the direction close to the mounting frame, the box frame abuts against the end face of the main frame 11, at this time, the auxiliary frame 12 is surrounded in the cover frame 181 and the box cover 18 closes the opening of the box slot 17. In the embodiment, the box cover 18 is specifically provided with two.

[0053] With reference to Figure 2 and Figure 3 , the end face of the main frame 11 close to the auxiliary frame 12 is provided with a first driving member, which is specifically provided as a gas spring 5. The gas spring 5 comprises a pressure cylinder 51 and a piston rod 52 sliding in the pressure cylinder 51. One end of the pressure cylinder 51 away from the piston rod 52 is hingedly connected with the end face of the main frame 11, and one end of the piston rod 52 away from the pressure cylinder 51 is hingedly connected with the inner side wall of the box frame. When the piston rod 52 slides away from the pressure cylinder 51 under the action of the gas filled in the pressure cylinder 51, the piston rod 52 can push the box frame to rotate away from the main frame 11 to open the box slot 17. When the piston rod 52 slides to the end of the stroke, the gas spring 5 supports the box cover 18, and the angle between the box cover 18 and the main frame 11 remains unchanged. It is convenient for the operator to install parts into the box slot 17. Two gas springs 5 are connected on one box cover 18, and the two gas springs 5 are located on both sides of the cover frame 181. In the embodiment, the gas spring 5 is specifically provided with four.

[0054] With reference to Figure 2 and Figure 4 , the end of the main frame 11 close to the support base 13 is provided with a locking member, which is specifically provided as a connecting rod lock 6. The connecting rod lock 6 comprises an operation box 61 and a locking connecting rod 62. In the embodiment, the locking connecting rod 62 is provided with two, and the two locking connecting rods 62 are oppositely arranged on both sides of the operation box 61 and are slidingly connected with the operation box 61. The operation box 61 is provided with a trigger rod 63 for driving the locking connecting rod 62 to slide, the trigger rod 63 is rotatably arranged in the operation box 61,

[0055] With reference to Figure 4 and Figure 5The other end of the trigger lever 63 penetrates the operation box 61. Turning the trigger lever 63 can drive the two locking links 62 to move towards or away from each other. The end of the locking link 62 away from the operation box 61 is fixed with a locking block 621, and a positioning groove 1811 is formed in the inner side wall of the cover frame 181 for inserting the locking block 621. The operator turns the box cover 18 towards the main frame 11, and then turns the trigger lever 63 to drive the two locking links to slide away from each other until the locking block 621 slides into the positioning groove 1811, so that the end of the cover frame 181 away from the rotating end is fixed to the main frame 11, and the box cover 18 is locked.

[0056] Referring to Figure 2 and Figure 3 , two slide rails 14 are fixed on the inner side wall of the box slot 17, and the two slide rails 14 are oppositely arranged. The box slot 17 is provided with a lifting rod 2, and the two ends of the lifting rod 2 are located in the two slide rails 14 respectively, and the lifting rod 2 is slidably connected with the slide rails 14. In this embodiment, the slide rails 14 extend along the top of the sub-frame 12 to the middle of the sub-frame 12. In other embodiments, the length of the slide rails 14 can be set according to actual conditions. The lifting rod 2 is fixed with two clamping pieces 3, which are specifically provided as positioning clamps in this embodiment. The positioning clamps are specifically provided as two, and the two positioning clamps are spaced apart. The advertising canvas can be installed on the lifting rod 2 through the two positioning clamps.

[0057] Referring to Figure 3 and Figure 4 , the mounting frame is further provided with a first driving assembly 4, and the first driving assembly 4 includes a reversing pulley 42 and a pull rope 41. In this embodiment, the reversing pulley 42 is specifically provided as two. The two reversing pulleys 42 are fixedly connected to the outer side wall of the sub-frame 12, one of which is located at the top end of the sub-frame 12, and the other is located at the top corner of the sub-frame 12. One end of the pull rope 41 is fixedly connected to the lifting rod 2, and the other end extends towards the bottom of the sub-frame 12 after passing through the two pulleys in sequence. The end of the pull rope 41 away from the lifting rod 2 is fixed with a pull ring 43. The outer side wall of the sub-frame 12 is fixed with a positioning column 15, and the positioning column 15 is arranged close to the bottom of the sub-frame 12. In this embodiment, the positioning column 15 is specifically provided as a cylindrical shape, and the axis of the positioning column 15 is perpendicular to the outer side wall of the sub-frame 12. The pull ring 43 can be sleeved on the positioning column 15, so that the end of the pull rope 41 close to the pull ring 43 is locked at the positioning column 15, realizing the locking of the vertical position of the lifting rod 2.

[0058] Referring to Figure 4 , in order to reduce the probability of the pull ring 43 separating from the positioning column 15, the end of the positioning column 15 away from the sub-frame 12 is integrally formed with a positioning baffle 151, and the positioning baffle 151 is a circular plate, and the diameter of the positioning baffle 151 is equal to the inner diameter of the pull ring 43.

[0059] The pull ring 43 is removed from the positioning column 15, the pull rope 41 is away from the end of the lifting rod 2 and is out of restriction, the lifting rod 2 vertically slides along the slide rail 14 under the action of gravity, and after the lifting rod 2 slides to the end of the slide rail 14, the operator can use the positioning clamp to hold one end of the advertising canvas on the lifting column. Then, the pull rope 41 is pulled downward to drive the lifting rod 2 to move upward, so that the lifting rod 2 slides to the top of the sub-frame 12, and the pull ring 43 is sleeved on the positioning column 15 again, so that the vertical position of the lifting rod 2 is fixed.

[0060] The implementation principle of the double-sided lamp box in the embodiment 1 of the application is as follows: the trigger strip is rotated to drive the two locking connecting rods 62 to move towards each other, so that the locking block 621 at one end of the locking connecting rod 62 slides out of the positioning groove 1811. The box cover 18 is rotated away from the mounting frame under the action of the gas spring 5 to open the box groove 17. The end of the advertising canvas is clamped and fixed on the lifting rod 2 by the positioning clamp, and the pull ring 43 is pulled downward, so that the lifting rod 2 vertically moves upward under the action of the pull rope 41. After the lifting rod 2 moves to the top of the sub-frame 12, the pull ring 43 is sleeved on the positioning column 15. Then, the box cover 18 is rotated towards the mounting frame until the box cover 18 abuts against the end face of the main frame 11. The trigger strip is rotated again to drive the two locking connecting rods 62 to move away from each other, so that the locking block 621 at one end of the locking connecting rod 62 slides into the positioning groove 1811, and the box cover 18 is closed.

[0061] Embodiment 2

[0062] The embodiment 2 of the application provides a double-sided lamp box.

[0063] Reference Figure 6 and Figure 7 The difference between the embodiment 2 and the embodiment 1 of the application is that the side of the mounting frame where the lifting rod 2 is arranged is further provided with a winding device 7, and the winding device 7 comprises a winding assembly 71 and a second driving assembly 8. The winding assembly 71 comprises a winding roller 711, and a rotating shaft 7111 is coaxially fixed in the winding roller 711. Two mounting holes 121 are formed in the side wall of the sub-frame 12, and the two mounting holes 121 are oppositely arranged. The two ends of the rotating shaft 7111 are rotatably arranged in the two mounting holes 121 respectively. The mounting hole 121 comprises a first hole section 1211 and a second hole section 1212 which are in communication, and the first hole section 1211 is located below the second hole section 1212. The bottom of the first hole section 1211 is arranged in a semicircular arc shape matched with the rotating shaft 7111, so that the end of the rotating shaft 7111 can rotate at the bottom of the first hole section 1211; and the end of the second hole section 1212 away from the first hole section 1212 is provided with an opening, and the rotating shaft 7111 can slide to the second hole section 1212 along the first hole section 1211 and then slide out of the sub-frame 12 from the opening of the second hole section 1212, so as to realize detachable connection of the winding roller 711 on the sub-frame 12.

[0064] ReferenceFigure 7 and Figure 8 The outer side wall of the winding roller 711 is provided with a containing strip groove 7113 which penetrates through the winding roller 711. The winding roller 711 is further provided with a fixing member 72 which comprises a sliding block 721 and a pressing plate 722 fixedly connected to one end of the sliding block 721. The end surface of the winding roller 711 is provided with an adjusting groove 7114 for sliding of the sliding block 721. The adjusting groove 7114 is in communication with the containing strip groove 7113, and the end of the pressing plate 722 away from the sliding block 721 extends into the containing strip groove 7113. The pressing plate 722 is slidingly arranged in the containing strip groove 7113. In this embodiment, two fixing members 72 are arranged on one winding roller 711, and the two fixing members 72 are respectively located at the two ends of the winding roller 711. After the advertising canvas is clamped on the lifting rod 2, the part of the advertising canvas away from the lifting rod 2 can be arranged in the containing strip groove 7113, and the sliding block 721 is slid so that the pressing plate 722 tightly presses the advertising canvas at one end of the containing strip groove 7113, thereby realizing the fixation of the advertising canvas on the winding roller 711.

[0065] Reference Figure 7 and Figure 9 The second driving assembly 8 comprises a first gear 81 and a second gear 82. The second gear 82 is provided with a ring of internal teeth around its own axis at one end close to the first gear 81, and the second gear 82 is in engagement with the internal teeth of the first gear 81. The outer side wall of the rotating shaft 7111 close to the first gear 81 is fixedly provided with a matching key 7112, one end of the rotating shaft 7111 is coaxially arranged in the first gear 81, and the matching key 7112 on the rotating shaft 7111 is clamped in the first gear 81. The end surface of the main frame 11 close to the auxiliary frame 12 is fixedly provided with a mounting plate 111, and the second gear 82 is rotationally connected to the mounting plate 111. The end surface of the main frame 11 is further slidingly provided with a rack 83 which is in engagement with the external teeth of the second gear 82. When the rack 83 slides, the second gear 82 is driven to rotate, the first gear 81 in engagement with the second gear 82 is rotated, the rotating shaft 7111 is driven to rotate to indirectly drive the winding roller 711 to rotate, and the winding roller 711 winds the advertising canvas.

[0066] Reference Figure 9 and Figure 10In the embodiment, the slide rail 14 extends to the vicinity of the winding roller 711; correspondingly, the end of the pull rope 41 connected with the pull ring 43 is extended. The second driving assembly 8 comprises a driving member for driving the rack 83 to slide, which is specifically a driving block 85. The driving block 85 is slidingly arranged on the outer side wall of the main frame 11. The outer side wall of the main frame 11 is provided with an inner recessed slide channel 112 for the rack 83 to slide, and the inner recessed slide channel 112 is further provided with a positioning gasket (not shown in the figure), which is used to increase the friction between the driving block 85 and the inner side wall of the inner recessed slide channel 112, so that the driving block 85 can be fixed at a predetermined position in the slide rail 14 when not subjected to external force. The driving block 85 is fixedly connected with a driving rope 84, which is sequentially threaded into the auxiliary frame 12 and connected with a trigger member. In the embodiment, the trigger member is specifically a trigger sliding block 9, which is slidingly arranged in the slide rail 14, and the inner side wall of the slide rail 14 is provided with a strip hole (not shown in the figure) for the trigger sliding block 9 to slide. One end of the trigger sliding block 9 is connected with the driving rope 84. When the operator removes the pull ring 43 from the positioning column 15, the lifting rod 2 vertically slides downward, and the advertising canvas also slides downward with the lifting rod 2. When the lifting rod 2 slides to contact the trigger sliding block 9, the lifting rod 2 pushes the trigger sliding block 9 to vertically slide downward together. When the trigger sliding block 9 slides downward, it drives the driving rope 84 to slide, so that the driving rope 84 pulls the driving block 85 to slide upward. When the rack 83 vertically slides upward, the first gear 81 engaged with the rack 83 rotates, the first gear 81 drives the second gear 82 to rotate, so as to drive the winding roller 711 to rotate, thereby realizing the winding of the advertising canvas.

[0067] Reference Figure 1 and Figure 7 When the lifting rod 2 slides to the end of the stroke, the winding of the advertising canvas on the winding roller 711 is completed, the positioning clamp is loosened, and the connection between the advertising canvas and the lifting rod 2 is disconnected. Then, the winding roller 711 is slid along the axis direction of the winding roller 711, so that the matching key 7112 of the rotating shaft 7111 slides out of the first gear 81; the winding roller 711 is slid again, so that the rotating shaft 7111 slides along the first hole segment 1211 to the second hole segment 1212, and the rotating shaft 7111 slides out of the auxiliary frame 12 from the opening of the second hole segment 1212. The sliding block 721 is slid, so that the abutting plate 722 slides away from the advertising canvas. The advertising canvas is wound on the winding roller 711 in a roll shape. Finally, the roll-shaped advertising canvas is pulled out of the winding roller 711 along the axis direction of the winding roller 711. The winding roller 711 is repositioned at the second hole segment 1212 of the mounting hole 121, the winding roller 711 is slid, the matching key 7112 on the rotating shaft 7111 is reconnected with the first gear 81, and then the driving block 85 is slid to the original position for next use.

[0068] The implementation principle of the double-sided lamp box of the embodiment 2 is as follows: the implementation manner of installing the advertising canvas on the lifting rod 2 in the embodiment 2 is the same as that in the embodiment 1. After clamping and fixing one end of the advertising canvas on the lifting rod 2, pulling the pull rope 41 drives the lifting rod 2 to slide to the top of the secondary frame 12, and then the pull ring 43 is sleeved on the positioning rod. Subsequently, the end of the advertising canvas away from the rod is placed in the accommodating groove 7113, the sliding block 721 at both ends of the winding roller 711 is slid, and the part of the advertising canvas in the accommodating groove 7113 is abutted by the abutting plate 722, so that the box cover 18 can be closed; when the cover frame 181 abuts against the main frame 11, the trigger rod 63 is rotated to lock the cover frame 181 on the main frame 11. If it is needed to remove the advertising canvas from the lifting rod 2, the trigger rod 63 is rotated to unlock the box cover 18, and the box cover 18 is turned away from the main frame 11 under the action of the gas spring 5. The pull ring 43 is removed from the positioning column 15, the lifting rod 2 slides downward under the action of its own gravity, and when the lifting rod 2 slides to contact the trigger sliding block 9, the lifting rod 2 pushes the trigger sliding block 9 to slide downward to drive the driving rope 84 to move. The rack 83 vertically moves upward under the action of the driving rope 84 and the driving block 85, the first gear 81 and the second gear 82 rotate with the movement of the rack 83, so as to drive the winding roller 711 to rotate and realize the winding of the advertising canvas. After winding, the positioning clamp is loosened to detach the advertising canvas from the lifting rod 2. The winding roller 711 is taken out along the mounting hole 121 of the secondary frame 12, the sliding block 721 is slid again to make the abutting plate 722 slide away from the advertising canvas, and then the advertising canvas in the roll shape can be taken off from the winding roller 711.

[0069] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A double-sided light box, characterized in that, The utility model relates to a kind of advertising light box, including light box body (1), the light box body (1) includes mounting frame and the light-emitting panel (16) being arranged in the mounting frame;Lifting rod (2), the lifting rod (2) is located the light-emitting panel (16) side, and the lifting rod (2) is slidably connected on the mounting frame;Clamping piece (3), the clamping piece (3) is used to clamp advertising canvas, the clamping piece (3) is fixedly arranged on the lifting rod (2);First drive assembly (4), the first drive assembly (4) is used to drive the lifting rod (2) along vertical direction sliding, the first drive assembly (4) includes pull rope (41) and reversing pulley (42), the reversing pulley (42) is fixed on the mounting frame top, the pull rope (41) one end is connected with lifting rod (2), the other end is extended after reversing pulley (42) is passed, and it is close to the direction of mounting frame bottom; The mounting frame is further provided with winding device (7), and the winding device (7) includes winding assembly (71) and second drive assembly (8);The winding assembly (71) includes winding roller (711) and the fixing part (72) for clamping advertising canvas, the winding roller (711) is detachably connected on the mounting frame, and the second drive assembly (8) is used to drive the winding roller (711) rotation; The outer side wall of the winding roller (711) is provided with a containing slot (7113), the fixing part (72) is slidably arranged on the winding roller (711), and the fixing part (72) includes a sliding block (721) and a pressing plate (722) fixed to one side of the sliding block (721);The end face of the winding roller (711) is provided with an adjusting groove (7114) for the sliding block (721) to slide, and the pressing plate (722) is slidably arranged in the containing slot (7113); The second drive assembly (8) includes a first gear (81) and a second gear (82) engaged with each other, the first gear (81) is coaxially sleeved on one end of the winding roller (711), and the second gear (82) is rotatably connected to the mounting frame;The second gear (82) is also engaged with a rack (83), and the rack (83) is slidably connected to the mounting frame;Second drive element is slidably arranged on the mounting frame, and the second drive element is used to drive the rack (83) to slide; The second drive assembly (8) further includes a drive rope (84) connected to one end of the rack (83), and the second drive element includes a drive block (85) slidably arranged on the mounting frame, and a trigger element is slidably arranged below the lifting rod (2) and used to drive the drive block (85) to slide along the vertical direction. The trigger is arranged as a trigger slider (9), the lifting rod (2) slides downward under the action of gravity, when the lifting rod (2) slides to contact the trigger slider (9), the lifting rod (2) pushes the trigger slider (9) to slide downward, to drive the driving rope (84) to move, the rack (83) vertically moves upward under the action of the driving rope (84) and the driving block (85), the first gear (81) and the second gear (82) rotate with the movement of the rack (83), so as to drive the winding roller (711) to rotate, and realize the winding of the advertising canvas.

2. A double-sided light box according to claim 1, characterized in that The pull rope (41) is fixed with a pull ring (43) at one end away from the lifting rod (2), a positioning column (15) is fixed on the outer wall of the mounting frame, the pull ring (43) can be sleeved on the positioning column (15), and the positioning column (15) is arranged close to the bottom of the mounting frame.

3. A double-sided light box according to claim 2, wherein, The mounting frame is divided into two box grooves (17) by the light emitting panel (16), and the lifting rod (2) is located in one of the box grooves (17); the opening of the box groove (17) is provided with a box cover (18), the box cover (18) comprises a cover frame (181) and a visible glass plate (182) arranged in the cover frame (181), and one end of the cover frame (181) is rotatably connected with the mounting frame.

4. A double-sided light box as claimed in claim 3, wherein, A first driving member is arranged on the mounting frame for driving the cover frame (181) to rotate away from the mounting frame.

5. A double-sided light box according to claim 4, wherein, The first driving member comprises a gas spring (5), the gas spring (5) comprises a pressure cylinder (51) and a piston rod (52), one end of the pressure cylinder (51) is hinged to the outer wall of the mounting frame, one end of the piston rod (52) is arranged in the piston rod (52) and is hinged to the piston rod (52), and the other end of the piston rod (52) is hinged to the cover frame (181).

6. A double-sided light box as claimed in claim 3, wherein, One end of the mounting frame is provided with a locking member for locking the cover frame (181), and the locking member comprises a connecting rod lock (6); the connecting rod lock (6) comprises an operation box (61) and a locking connecting rod (62) slidably connected to the operation box (61), a trigger rod (63) for driving the locking connecting rod (62) to slide is rotatably connected to the operation box (61), one end of the locking connecting rod (62) away from the operation box (61) is provided with a locking block (621), and the cover frame (181) is provided with a positioning groove (1811) for inserting the locking block (621).

7. A double-sided light box as claimed in claim 3, wherein, The winding roller (711) is located on the side of the box groove (17) away from the reversing pulley (42).

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