Publicity lamp box for mine

Abstract

The utility model relates to the technical field of propaganda lamp boxes, in particular to a mine propaganda lamp box which comprises an outer frame. Transparent plates are fixedly connected to the two faces of the middle of the outer frame. A leaflet is arranged between the two transparent plates; the bottom surface of the outer frame is fixedly connected with a backlight housing; a reflecting film is adhered to the inner wall of the backlight housing; an LED lamp is arranged in the middle of the backlight housing; supporting frames are fixedly connected to the bottom faces of the two sides of the outer frame. The outer frame is supported through the supporting frame, and the outer frame is in an inclined state, so that a worker can read conveniently; the LED lamps are powered on and emit light in the backlight housing, and light generated by the LED lamps is reflected by the reflecting film on the inner side of the backlight housing, so that the light is gathered to the back of the leaflet on the inner ring of the outer frame, the leaflet emits light, the clear and bright degree of content on the leaflet is effectively improved, and reading of workers is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of advertising light boxes, specifically an advertising light box for use in mines. Background Technology

[0002] There are numerous work regulations that require attention in the working areas of the mine, and the operation of equipment also requires operating procedures. In order for staff to pay attention to and understand the regulations in a timely manner and to work in accordance with them, information display racks will be set up in the work areas and equipment where special attention is required.

[0003] A search revealed a patent application with application number 202011118704.0 that discloses a promotional board for enterprise management. In this device, the angle adjustment of the board is not infinitely adjustable but stepped. After the adjustment is completed, the board is also fixed. This structure is simple and easy to implement. The wiping component can wipe away the writing on the board when it slides, making it easy to use. Moreover, the sliding plate and the slider are detachably connected, which facilitates the subsequent disassembly of the sliding plate to clean the wiping component.

[0004] A patent application with application number 201210402922.6 discloses a newspaper advertising board. The invention has a base plate and a fixed plate that are hinged together for easy folding and storage. A fixing rod is provided between the base plate and the fixed plate for stability. The fixed plate has several pin holes from top to bottom. The back of the display board has pins that match the pin holes. The display board is fixedly connected to the fixed plate by fastening bolts, which facilitates disassembly and allows the height of the display board to be adjusted at will.

[0005] Patent application number 201810126445.2 discloses a novel advertising board. The lower end of the lower adjusting rod is connected to a base bracket, the upper end of the lower adjusting rod is connected to an adjusting sleeve, the lower end of the upper adjusting rod is connected to the adjusting sleeve, and the upper end of the upper adjusting rod is connected to the main body of the advertising board via a locking pad. One end of a spring is connected to the locking pad, and the other end of the spring is connected to a groove on the main body of the advertising board. This device is easy to disassemble and install, its height is adjustable, and it can be placed horizontally on uneven ground.

[0006] Although the existing display racks can display information, the environment in coal mines is harsh and dark, resulting in low visibility. Conventional display racks cannot clearly present the information, making it difficult for staff to understand the information quickly and clearly.

[0007] Therefore, a propaganda light box for mines is proposed to address the above problems. Utility Model Content

[0008] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0009] The technical solution adopted by this utility model to solve its technical problem is as follows: A mine advertising light box of this utility model includes an outer frame; transparent plates are fixedly connected to both sides of the middle part of the outer frame; an advertising page is arranged between the two transparent plates; a backlight cover is fixedly connected to the bottom surface of the outer frame; a reflective film is adhered to the inner wall of the backlight cover; an LED light is arranged in the middle of the backlight cover; and support frames are fixedly connected to the bottom surfaces of both sides of the outer frame.

[0010] Preferably, the backlight cover has a threaded mounting hole in the middle; a mounting cylinder is threaded into the inside of the threaded mounting hole; a mounting post is provided inside the mounting cylinder; a through hole is provided in the middle of the mounting post; and the LED light is located at the top of the mounting post.

[0011] Preferably, a lamp holder is fixedly connected inside the through hole of the mounting post; the LED lamp is threadedly installed in the lamp holder; the power cord of the lamp holder passes through the through hole of the mounting post; and the power cord of the lamp holder is connected to the power supply box.

[0012] Preferably, the top of the mounting column is provided with an inner light-shielding cylinder and an outer light-shielding cylinder; both the inner and outer light-shielding cylinders are provided with multiple vertical grooves around their perimeter; the vertical grooves of the inner and outer light-shielding cylinders can be staggered and overlapped; the inner light-shielding cylinder is located in the inner circle of the outer light-shielding cylinder; the bottom surface of the inner light-shielding cylinder is bolted to the top of the mounting column; the outer light-shielding cylinder is rotatably connected to the top of the mounting column; a top plate is fixedly connected to the top surface of the inner light-shielding cylinder; the bottom surface of the top plate is rotatably connected to the top surface of the outer light-shielding cylinder.

[0013] Preferably, the outer ring of the mounting post has an external threaded groove; an adjusting nut is rotatably mounted on the bottom end of the mounting cylinder; the inner ring of the adjusting nut is threadedly engaged with the external threaded groove.

[0014] Preferably, the outer ring of the mounting post is provided with multiple vertical grooves; the vertical grooves penetrate the external threaded groove; the inner ring of the mounting cylinder is fixedly connected with multiple guide strips; the guide strips slide in cooperation with the vertical grooves.

[0015] Preferably, a mounting groove is provided on one of the short sides of the outer frame; the mounting groove is located between the two transparent panels; the promotional page is placed in the mounting groove; and a stop strip is inserted into the opening of the mounting groove.

[0016] Preferably, both sides of the mounting groove are provided with sliding grooves; a fixing structure is provided inside the mounting groove; the fixing structure includes a bottom strip disposed inside the mounting groove; both ends of the top surface of the bottom strip are fixedly connected to inserts; the inserts slide in cooperation with the sliding grooves; a through groove is provided in the middle of the inserts; a top strip is provided on the top surface of the bottom strip; both ends of the top strip slide in cooperation with the through grooves of the inserts; an adjusting screw is rotatably installed inside the through groove of the inserts; the adjusting screw is threaded in cooperation with the top strip; one side of the promotional page is clamped by the bottom strip and the top strip.

[0017] Preferably, a second bottom strip is provided at the opening of the mounting groove; a second top strip is provided on the top surface of the second bottom strip; the two ends of the second bottom strip and the second top strip are locked together by bolts; the second bottom strip is fixedly connected to the stop strip; the other side of the promotional page is clamped by the second bottom strip and the second top strip.

[0018] Preferably, a connecting rod is fixedly connected between both ends of the first bottom strip and the second bottom strip.

[0019] Preferably, rubber strips are fixedly attached to the top surface of the first bottom strip, the bottom surface of the first top strip, the top surface of the second bottom strip, and the bottom surface of the second top strip.

[0020] The advantages of this utility model are:

[0021] 1. The present invention relates to a mine advertising lightbox comprising an outer frame, a transparent plate, a support frame, a backlight cover, and LED lights. The support frame supports the outer frame, which is tilted to facilitate reading by staff. The LED lights are powered on and emit light within the backlight cover. The light emitted by the LED lights is reflected by a reflective film on the inner side of the backlight cover, causing the light to concentrate on the back of the advertising page within the outer frame, thus illuminating the advertising page and effectively improving the clarity and brightness of the content on the advertising page, thereby facilitating reading by staff.

[0022] 2. The mine advertising light box described in this utility model is equipped with an inner light-shielding cylinder and an outer light-shielding cylinder. By rotating the outer light-shielding cylinder, the vertical grooves of the inner and outer light-shielding cylinders are offset and overlapped, thereby adjusting the area of ​​the overlapping portion of the vertical grooves of the inner and outer light-shielding cylinders. The light from the LED light needs to pass through the overlapping portion of the vertical grooves of the inner and outer light-shielding cylinders to be scattered. This allows for adjustment of the brightness of the advertising light box, enabling it to adapt to locations with different levels of light and darkness, thus improving the applicability of the advertising light box.

[0023] 3. The mine advertising light box described in this utility model is equipped with a mounting column, an external threaded groove, an adjusting nut, a vertical groove, and a guide strip. Because the adjusting nut is threadedly engaged with the external threaded groove on the outer ring of the mounting column, and because the vertical groove on the outer ring of the mounting column is slidably engaged with the guide strip on the inner ring of the mounting cylinder, rotating the adjusting nut causes the mounting column to slide along the guide strip, controlling the distance at which the top of the mounting column extends into the backlight housing, i.e., controlling the distance between the LED light and the bottom surface inside the backlight housing; thereby controlling and adjusting the illumination range of the advertising page, thus clearly highlighting the advertising content on the advertising page. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the present utility model;

[0026] Figure 2 This is an exploded view of the outer frame of this utility model;

[0027] Figure 3 This is an exploded view of the fixed structure in this utility model;

[0028] Figure 4 This is a diagram showing the internal structure of the backlight cover in this utility model;

[0029] Figure 5 This is a perspective view of the mounting column in this utility model;

[0030] Figure 6 This is a sectional view of the mounting column in this utility model;

[0031] Figure 7 This is a top structural diagram of the mounting column in this utility model;

[0032] Figure 8 This is an exploded view of the mounting column in this utility model;

[0033] Figure 9 This is a perspective view of the inner and outer light-shielding cylinders in this utility model;

[0034] Figure 10 This is a perspective view of the mounting cylinder and mounting column in this utility model.

[0035] In the diagram: 1. Outer frame; 2. Transparent panel; 3. Promotional leaflet; 4. Backlight cover; 5. LED light; 6. Support frame; 7. Threaded mounting hole; 8. Mounting cylinder; 9. Mounting column; 10. Lamp holder; 11. Inner light shield; 12. Outer light shield; 13. Top plate; 14. External threaded groove; 15. Adjusting nut; 16. Vertical groove; 17. Guide strip; 18. Mounting groove; 19. Stop bar; 20. Slide groove; 21. No. 1 bottom strip; 22. Inlay; 23. No. 1 top strip; 24. Adjusting screw; 25. No. 2 bottom strip; 26. No. 2 top strip; 27. Connecting rod; 28. Rubber strip. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0037] like Figures 1 to 8 As shown, a mine advertising lightbox includes an outer frame 1; transparent panels 2 are fixedly attached to both sides of the middle of the outer frame 1; an advertising page 3 is disposed between the two transparent panels 2; a backlight cover 4 is fixedly attached to the bottom surface of the outer frame 1; a reflective film is adhered to the inner wall of the backlight cover 4; an LED light 5 is disposed in the middle of the backlight cover 4; and support frames 6 are fixedly attached to the bottom surfaces of both sides of the outer frame 1.

[0038] Due to the harsh environment and prolonged darkness in coal mines, visibility is low, and conventional display racks cannot clearly present the information, making it difficult for workers to understand the information quickly and clearly. Therefore, this application provides a mine advertising lightbox.

[0039] The transparent panel 2 in this application is made of a material with transparency and high strength, such as acrylic or tempered glass; the support frame 6 in this application can be adjusted in height, so that the outer frame 1 can be tilted for easy reading;

[0040] In use, the outer frame 1 is supported by the support frame 6, and the outer frame 1 is tilted to facilitate reading by the staff. When in a dark area in a coal mine, the LED light 5 is powered on and emits light inside the backlight cover 4. The light emitted by the LED light 5 is reflected by the reflective film on the inside of the backlight cover 4, causing the light to concentrate on the back of the promotional page 3 on the inner circle of the outer frame 1, causing the promotional page 3 to emit light, thereby effectively improving the clarity and brightness of the content on the promotional page 3, and thus facilitating reading by the staff.

[0041] like Figures 4 to 8As shown, the backlight cover 4 has a threaded mounting hole 7 in the middle; a mounting cylinder 8 is threadedly installed inside the threaded mounting hole 7; a mounting post 9 is provided inside the mounting cylinder 8; a through hole is provided in the middle of the mounting post 9; the LED light 5 is located at the top of the mounting post 9; a lamp holder 10 is fixedly connected inside the through hole of the mounting post 9; the LED light 5 is threadedly installed inside the lamp holder 10; the power cord of the lamp holder 10 passes through the through hole of the mounting post 9; the power cord of the lamp holder 10 is connected to the power supply box.

[0042] The power supply box in this embodiment is a mining explosion-proof and intrinsically safe DC power supply box, which can provide sufficient and stable power to the lamp holder 10 and effectively reduce the danger.

[0043] Because LED light 5 will lose brightness or even become completely damaged after long-term continuous use, LED light 5 needs to be replaced in a timely manner.

[0044] When replacing LED light 5, rotate the mounting cylinder 8 to remove it from the threaded mounting hole 7. The mounting cylinder 8 then pulls the mounting post 9 and LED light 5 out of the backlight cover 4. Next, rotate the damaged LED light 5 to remove it from the lamp holder 10. Then, install the new LED light 5 into the lamp holder 10, and then install the mounting cylinder 8 into the threaded mounting hole 7, so that the new LED light 5 is installed into the backlight cover 4. This completes the replacement of LED light 5 and ensures the long-term effective use of the advertising light box.

[0045] like Figures 5 to 9 As shown, the top of the mounting column 9 is provided with an inner light-shielding cylinder 11 and an outer light-shielding cylinder 12; both the inner light-shielding cylinder 11 and the outer light-shielding cylinder 12 are provided with multiple vertical slots around their perimeter; the vertical slots of the inner light-shielding cylinder 11 and the outer light-shielding cylinder 12 can be staggered and overlapped with each other; the inner light-shielding cylinder 11 is located in the inner circle of the outer light-shielding cylinder 12; the bottom surface of the inner light-shielding cylinder 11 is bolted to the top of the mounting column 9; the outer light-shielding cylinder 12 is rotatably connected to the top of the mounting column 9; a top plate 13 is fixedly connected to the top surface of the inner light-shielding cylinder 11; the bottom surface of the top plate 13 is rotatably connected to the top surface of the outer light-shielding cylinder 12.

[0046] Because the LED light 5 has high brightness, and the light is further focused by the reflective film inside the backlight cover 4, the inner circle of the outer frame 1 has high brightness. However, the brightness varies in different areas of the coal mine. In darker areas, the light from the high-brightness advertising light box will irritate the eyes of the workers and make it difficult for them to read. Therefore, the advertising light box needs to be able to adjust the brightness.

[0047] During operation, rotating the outer ring of the outer light-shielding cylinder 12 causes the vertical slots of the inner light-shielding cylinder 11 and the outer light-shielding cylinder 12 to misalign and overlap, thus adjusting the area of ​​the overlapping portion of the vertical slots of the inner light-shielding cylinder 11 and the outer light-shielding cylinder 12. The light from the LED light 5 needs to pass through the overlapping portion of the vertical slots of the inner light-shielding cylinder 11 and the outer light-shielding cylinder 12 to be scattered. When the area of ​​the overlapping portion of the vertical slots of the inner light-shielding cylinder 11 and the outer light-shielding cylinder 12 increases, more light from the LED light 5 can be scattered, i.e., the brightness of the advertising lightbox increases. Conversely, when the area of ​​the overlapping portion of the vertical slots of the inner light-shielding cylinder 11 and the outer light-shielding cylinder 12 decreases, less light from the LED light 5 can be scattered, i.e., the brightness of the advertising lightbox decreases. This allows the advertising lightbox to adapt to locations with different levels of brightness, thus improving its applicability.

[0048] like Figures 5 to 10 As shown, the outer ring of the mounting post 9 has an external threaded groove 14; an adjusting nut 15 is rotatably mounted on the bottom end of the mounting cylinder 8; the inner ring of the adjusting nut 15 is threadedly engaged with the external threaded groove 14; the outer ring of the mounting post 9 has multiple vertical grooves 16; the vertical grooves 16 penetrate the external threaded groove 14; the inner ring of the mounting cylinder 8 is fixedly connected with multiple guide bars 17; the guide bars 17 are slidably engaged with the vertical grooves 16.

[0049] Since the content advertised on page 3 occupies different areas of page 3, illuminating the entire page 3 would make the blank areas of page 3 too bright, affecting the clear display of the content; therefore, it is necessary to be able to adjust the lighting range of page 3.

[0050] During operation, the adjusting nut 15 is threaded into the external threaded groove 14 of the outer ring of the mounting post 9, and the vertical groove 16 of the outer ring of the mounting post 9 is slidably engaged with the guide strip 17 of the inner ring of the mounting cylinder 8. This causes the adjusting nut 15 to slide along the guide strip 17 when rotated, controlling the distance the top of the mounting post 9 extends into the backlight housing 4, thus controlling the distance between the LED light 5 and the bottom surface of the backlight housing 4. When the distance between the LED light 5 and the bottom surface of the backlight housing 4 decreases, the light from the LED light 5 is reflected by the reflective film inside the backlight housing 4 and focuses towards the center of the promotional page 3. Conversely, when the distance between the LED light 5 and the bottom surface of the backlight housing 4 increases, the light from the LED light 5 is reflected by the reflective film inside the backlight housing 4 and diffuses towards the outer periphery of the promotional page 3. This controls and adjusts the illumination range of the promotional page 3, thereby clearly highlighting the promotional content on the promotional page 3.

[0051] like Figures 1 to 3As shown, a mounting groove 18 is provided on one of the short sides of the outer frame 1; the mounting groove 18 is located between the two transparent panels 2; the promotional page 3 is placed in the mounting groove 18; a baffle strip 19 is inserted into the opening of the mounting groove 18;

[0052] Because the content on promotional page 3 may become blurry over time, and promotional page 3 needs to be replaced whenever the promotional content is changed;

[0053] When replacing the promotional page 3, remove the retaining strip 19 at the opening of the mounting slot 18, pull the promotional page 3 to be replaced out of the mounting slot 18, then insert the new promotional page 3 along the mounting slot 18 between the two transparent plates 2, and then insert the retaining strip 19 into the opening of the mounting slot 18; thus completing the replacement of the promotional page 3.

[0054] like Figures 1 to 3 As shown, both sides of the mounting groove 18 are provided with sliding grooves 20; a fixing structure is provided inside the mounting groove 18; the fixing structure includes a bottom strip 21 disposed inside the mounting groove 18; inserts 22 are fixedly connected to both ends of the top surface of the bottom strip 21; the inserts 22 are slidably engaged with the sliding grooves 20; a through groove is provided in the middle of the inserts 22; a top strip 23 is provided on the top surface of the bottom strip 21; both ends of the top strip 23 are slidably engaged with the through grooves of the inserts 22; an adjusting screw 24 is rotatably installed inside the through groove of the insert 22; the adjusting screw Rod 24 is threadedly engaged with the first top strip 23; one side of the promotional page 3 is clamped by the first bottom strip 21 and the first top strip 23; a second bottom strip 25 is provided at the opening of the mounting groove 18; a second top strip 26 is provided on the top surface of the second bottom strip 25; the two ends of the second bottom strip 25 and the second top strip 26 are locked together by bolts; the second bottom strip 25 is fixedly connected to the stop strip 19; the other side of the promotional page 3 is clamped by the second bottom strip 25 and the second top strip 26; a connecting rod 27 is fixedly connected between the two ends of the first bottom strip 21 and the second bottom strip 25;

[0055] Since the promotional leaflet 3 is usually made of soft fabric, it is difficult to insert the promotional leaflet 3 directly between the two transparent plates 2 along the mounting groove 18, and it also causes wrinkles in the promotional leaflet 3; therefore, a fixing structure is provided in this application for fixing the promotional leaflet 3.

[0056] When replacing the promotional page 3, pull the stop bar 19, causing the second bottom bar 25 to slide out of the mounting groove 18. Since the bolts of the second top bar 26 and the second bottom bar 25 clamp one side of the promotional page 3, the side of the promotional page 3 to be replaced will be moved out of the mounting groove 18. Through the connection of the connecting rod 27, the second bottom bar 25 will also cause the first bottom bar 21 to slide along the mounting groove 18 to the opening, causing the insert 22 to slide along the slide groove 20. At the same time, due to the obstruction of the slide groove 20 to the insert 22, the first bottom bar 21 cannot slide out of the mounting groove 18 completely.

[0057] Because the bottom strip 21 and the top strip 23 clamp the other side of the promotional page 3; when the bottom strip 21 moves to the opening of the mounting slot 18, the promotional page 3 to be replaced has been completely moved out of the mounting slot 18; loosen the bolts of the top strip 26 and the bottom strip 25 to loosen one side of the promotional page 3 to be replaced; then turn the adjusting screw 24 to move the top strip 23 away from the bottom strip 21 to loosen the other side of the promotional page 3 to be replaced; take out the promotional page 3 to be replaced.

[0058] Next, place one side of the new promotional page 3 between the first top strip 23 and the first bottom strip 21, rotate the adjusting screw 24 to push the first top strip 23 closer to the first bottom strip 21, clamping one side of the new promotional page 3; then place the other side of the new promotional page 3 between the second top strip 26 and the second bottom strip 25, and lock it in place with bolts, thus laying the new promotional page 3 flat and fixing it to the fixed structure; finally, push the fixed structure into the mounting groove 18, thus laying the new promotional page 3 flat and installing it between the two transparent plates 2, making it easier for staff to replace the promotional page 3.

[0059] like Figure 3 As shown, rubber strips 28 are fixedly attached to the top surface of the first bottom strip 21, the bottom surface of the first top strip 23, the top surface of the second bottom strip 25, and the bottom surface of the second top strip 26. When the first bottom strip 21 and the first top strip 23 cooperate, and the second bottom strip 25 and the second top strip 26 cooperate to clamp the side of the promotional page 3, the rubber strips 28 make the two pairs of rubber strips 28 squeeze and clamp the promotional page 3, thereby improving the clamping and fixing strength of the promotional page 3 and reducing the possibility of the promotional page 3 detaching from the fixing structure.

[0060] Working principle: When replacing the promotional leaflet 3, pulling the stop bar 19 causes the second bottom bar 25 to slide out of the mounting groove 18. Because the bolts locking the second top bar 26 and the second bottom bar 25 clamp one side of the promotional leaflet 3, the side of the promotional leaflet 3 to be replaced will move out of the mounting groove 18. Through the connection of the connecting rod 27, the second bottom bar 25 will also cause the first bottom bar 21 to slide along the mounting groove 18 towards the opening, causing the insert 22 to slide along the sliding groove 20. Simultaneously, due to the obstruction of the insert 22 by the sliding groove 20, the first bottom bar... 21 cannot be completely slid out of the mounting slot 18; because the bottom strip 21 and the top strip 23 clamp the other side of the promotional page 3; when the bottom strip 21 moves to the opening of the mounting slot 18, the promotional page 3 to be replaced has been completely moved out of the mounting slot 18; loosen the bolts of the top strip 26 and the bottom strip 25 to loosen one side of the promotional page 3 to be replaced; then turn the adjusting screw 24 to move the top strip 23 away from the bottom strip 21 to loosen the other side of the promotional page 3 to be replaced; take out the promotional page 3 to be replaced;

[0061] Next, place one side of the new promotional page 3 between the first top strip 23 and the first bottom strip 21, rotate the adjusting screw 24 to push the first top strip 23 closer to the first bottom strip 21, clamping one side of the new promotional page 3; then place the other side of the new promotional page 3 between the second top strip 26 and the second bottom strip 25, and lock it in place with bolts, thus laying the new promotional page 3 flat and fixing it to the fixed structure; finally, push the fixed structure into the mounting groove 18, thus laying the new promotional page 3 flat and installing it between the two transparent plates 2.

[0062] When replacing LED 5, rotate the mounting cylinder 8 to remove it from the threaded mounting hole 7. The mounting cylinder 8 will pull the mounting post 9 and LED 5 out of the backlight cover 4. Remove the top plate 13, then rotate the damaged LED 5 to remove it from the lamp holder 10. After that, install the new LED 5 into the lamp holder 10 and install the top plate 13.

[0063] Next, adjust the light brightness according to the brightness of the area; rotate the outer ring light shield 12 so that the vertical slots of the inner light shield 11 and the outer light shield 12 are misaligned and overlapped, thus adjusting the area of ​​the overlapping part of the vertical slots of the inner light shield 11 and the outer light shield 12. The light of the LED light 5 needs to pass through the overlapping part of the vertical slots of the inner light shield 11 and the outer light shield 12 to be scattered out; when the area of ​​the overlapping part of the vertical slots of the inner light shield 11 and the outer light shield 12 increases, the light that the LED light 5 can scatter out increases, that is, the brightness of the advertising light box increases; when the area of ​​the overlapping part of the vertical slots of the inner light shield 11 and the outer light shield 12 decreases, the light that the LED light 5 can scatter out decreases, that is, the brightness of the advertising light box decreases; then install the mounting cylinder 8 into the threaded mounting hole 7, so that the new LED light 5 is installed into the backlight cover 4;

[0064] Furthermore, the illumination range of the promotional page 3 is adjusted according to the area occupied by the content on the promotional page 3; the adjusting nut 15 is rotated, and the adjusting nut 15 drives the mounting post 9 to slide along the guide strip 17, controlling the distance at which the top of the mounting post 9 extends into the interior of the backlight cover 4, that is, controlling the distance between the LED light 5 and the bottom surface of the backlight cover 4; when the distance between the LED light 5 and the bottom surface of the backlight cover 4 decreases, the light from the LED light 5 is reflected by the reflective film inside the backlight cover 4 and focuses towards the center of the promotional page 3; while when the distance between the LED light 5 and the bottom surface of the backlight cover 4 increases, the light from the LED light 5 is reflected by the reflective film inside the backlight cover 4 and diffuses towards the outer periphery of the promotional page 3; thus controlling and adjusting the illumination range of the promotional page 3.

[0065] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A mine advertising light box, characterized in that: The frame includes an outer frame (1); transparent plates (2) are fixed to both sides of the middle part of the outer frame (1); a promotional page (3) is placed between the two transparent plates (2); a backlight cover (4) is fixed to the bottom surface of the outer frame (1); a reflective film is adhered to the inner wall of the backlight cover (4); an LED light (5) is placed in the middle of the backlight cover (4); and a support frame (6) is fixed to the bottom surfaces of both sides of the outer frame (1).

2. The mine advertising light box according to claim 1, characterized in that: The backlight cover (4) has a threaded mounting hole (7) in the middle; a mounting cylinder (8) is threaded inside the threaded mounting hole (7); a mounting post (9) is provided inside the mounting cylinder (8); a through hole is provided in the middle of the mounting post (9); the LED light (5) is located on the top of the mounting post (9).

3. A mine advertising light box according to claim 2, characterized in that: A lamp holder (10) is fixedly connected inside the through hole of the mounting post (9); the LED lamp (5) is threadedly installed in the lamp holder (10); the power cord of the lamp holder (10) passes through the through hole of the mounting post (9); the power cord of the lamp holder (10) is connected to the power supply box.

4. A mine advertising light box according to claim 2, characterized in that: The top of the mounting column (9) is provided with an inner light-shielding cylinder (11) and an outer light-shielding cylinder (12); both the inner light-shielding cylinder (11) and the outer light-shielding cylinder (12) are provided with multiple vertical grooves around them; the vertical grooves of the inner light-shielding cylinder (11) and the outer light-shielding cylinder (12) can be staggered and overlapped with each other; the inner light-shielding cylinder (11) is located in the inner circle of the outer light-shielding cylinder (12); the bottom surface of the inner light-shielding cylinder (11) is bolted to the top of the mounting column (9); the outer light-shielding cylinder (12) is rotatably connected to the top of the mounting column (9); a top plate (13) is fixedly connected to the top surface of the inner light-shielding cylinder (11); the bottom surface of the top plate (13) is rotatably connected to the top surface of the outer light-shielding cylinder (12).

5. A mine advertising light box according to claim 2, characterized in that: The outer ring of the mounting post (9) is provided with an external thread groove (14); the bottom end of the mounting cylinder (8) is rotatably mounted with an adjusting nut (15); the inner ring of the adjusting nut (15) is threadedly engaged with the external thread groove (14).

6. A mine advertising light box according to claim 5, characterized in that: The outer ring of the mounting post (9) is provided with multiple vertical grooves (16); the vertical grooves (16) pass through the external thread groove (14); the inner ring of the mounting cylinder (8) is fixedly connected with multiple guide strips (17); the guide strips (17) slide with the vertical grooves (16).

7. A mine advertising light box according to claim 1, characterized in that: An installation groove (18) is provided on one side of the short side of the outer frame (1); the installation groove (18) is located between the two transparent plates (2); the promotional page (3) is placed in the installation groove (18); a baffle (19) is inserted into the opening of the installation groove (18).

8. A mine advertising light box according to claim 7, characterized in that: The mounting groove (18) has sliding grooves (20) on both sides; the mounting groove (18) has a fixing structure inside; the fixing structure includes a bottom strip (21) inside the mounting groove (18); the bottom strip (21) has inserts (22) fixedly connected to both ends of its top surface; the inserts (22) slide in cooperation with the sliding grooves (20); the inserts (22) have a through groove in the middle; the bottom strip (21) has a top strip (23) on its top surface; the top two ends of the top strip (23) slide in cooperation with the through grooves of the inserts (22); an adjusting screw (24) is rotatably installed inside the through groove of the inserts (22); the adjusting screw (24) is threaded in cooperation with the top strip (23); one side of the promotional page (3) is held by the bottom strip (21) and the top strip (23); A second bottom strip (25) is provided at the opening of the mounting groove (18); a second top strip (26) is provided on the top surface of the second bottom strip (25); the two ends of the second bottom strip (25) and the second top strip (26) are locked together by bolts; the second bottom strip (25) is fixedly connected to the stop strip (19); the other side of the promotional page (3) is clamped by the second bottom strip (25) and the second top strip (26).

9. A mine advertising light box according to claim 8, characterized in that: A connecting rod (27) is fixedly connected between both ends of the first bottom strip (21) and the second bottom strip (25).

10. A mine advertising light box according to claim 8, characterized in that: Rubber strips (28) are fixed to the top surface of the first bottom strip (21), the bottom surface of the first top strip (23), the top surface of the second bottom strip (25), and the bottom surface of the second top strip (26).

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