Double-sided ultra-thin light box

Abstract

The utility model is suitable for the technical field of advertising light boxes, provides a double -faced ultrathin light box, including support frame and at least two display screen, the display screen includes the first screen and the second screen of setting in support frame front side, to form double -faced display, support frame includes keel and the top frame and bottom plate of connecting respectively in the top and bottom of keel, the screen frame for installing first screen and second screen is hinged to the front and back two sides of support frame, and the first screen and second screen are staggered arrangement in the direction perpendicular to support frame plane, so that the installation position of two screens has the offset, and the orthographic projection of first screen on support frame plane and the orthographic projection of second screen on support frame plane do not coincide completely, the top of first screen and second screen is hinged respectively with top frame through hinge. The utility model has solved the problem of inconvenient maintenance and poor safety caused by the thick structure of traditional double -faced light box, and the integral dismounting of maintenance is needed.

Description

Technical Field

[0001] This utility model applies to the field of advertising light box technology, and in particular relates to a double-sided ultra-thin light box. Background Technology

[0002] Double-sided advertising light boxes are widely used in modern urban landscapes and commercial advertising because they can display information in two directions simultaneously. Traditional double-sided light boxes typically use a heavy central frame with display panels directly fixed to the front and back sides. While this structure achieves the basic function of double-sided display, it has revealed many shortcomings in practical applications.

[0003] First, in order to replace the display or maintain internal electrical components (such as light sources and power supplies), maintenance personnel often need to disassemble the entire lightbox or open it from non-primary surfaces such as the side or top. This method of operation is not only cumbersome and time-consuming, but also poses significant safety risks when working at heights, making maintenance extremely inconvenient.

[0004] Secondly, in order to accommodate the internal components and ensure structural strength, the central frame of traditional double-sided light boxes is usually made quite thick, resulting in a large and bulky overall size. This not only increases material costs and transportation and installation difficulties, but also makes the light box's appearance less sleek and aesthetically pleasing, failing to meet the requirements of modern cities for simple and beautiful landscape facilities. Utility Model Content

[0005] This utility model provides a double-sided ultra-thin lightbox, aiming to solve the problems of inconvenient maintenance and poor safety caused by the heavy structure and the need for complete disassembly for maintenance of traditional double-sided lightboxes. The technical solution is as follows: A double-sided ultra-thin lightbox includes a support frame and at least two display screens. The display screens include a first screen disposed on the front side of the support frame and a second screen disposed on the rear side to form a double-sided display. The support frame includes a keel and a top frame and a bottom plate respectively connected to the top and bottom of the keel. The front and rear sides of the support frame are hinged to screen frames for mounting the first and second screens. The first and second screens are offset in a direction perpendicular to the plane of the support frame, so that the installation positions of the two screens are offset, and the orthographic projection of the first screen on the plane of the support frame does not completely coincide with the orthographic projection of the second screen on the plane of the support frame. The tops of the first and second screens are respectively hinged to the top frame.

[0006] Based on the above technical solution, a heat dissipation hole is provided on the top frame, and a baffle is connected to the top frame above the heat dissipation hole, with a gap between the baffle and the heat dissipation hole.

[0007] Preferably, a locking rod is provided on the support frame; both the bottom of the first screen and the second screen are provided with an unlocking lock, the unlocking lock including a hook seat, a hook and a torsion spring; both the bottom of the first screen and the second screen are provided with a rotating rod, the hook seat is fixed to the bottom of the screen, the rotating rod is rotatably connected to the hook seat, the hook is fitted on the rotating rod and can rotate with the rotating rod, the torsion spring is fitted on the rotating rod and acts on the hook, providing the hook with a reset torque toward the locking position; when locked, the hook is hooked onto the locking rod under the action of the torsion spring; the end of the rotating rod is provided with an irregular protrusion, and the rotating rod can be rotated by driving the irregular protrusion with a matching tool, so that the hook overcomes the torsion spring torque and disengages from the locking rod.

[0008] Preferably, the irregular protrusion is in the shape of a multi-petaled flower, having a central region and a plurality of protrusions radiating outward from the central region.

[0009] Beneficial effects Compared with the prior art, the beneficial effects of this utility model are: 1. By installing hinges at the top of the support frame, and in conjunction with the opening lock and gas spring at the bottom, the front and rear screens can be opened easily like a door, allowing for internal inspection and screen replacement without the need for complete disassembly. This greatly simplifies the high-altitude operation process and improves maintenance efficiency and safety.

[0010] 2. The staggered installation design of the screens significantly reduces the overall thickness of the lightbox while ensuring structural strength. Attached Figure Description

[0011] 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 one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0012] Figure 1 : A schematic diagram of the structure of this utility model; Figure 2 : A schematic diagram of the structure of the top plate described in this utility model; Figure 3 : A schematic diagram of the structure of the support frame described in this utility model; Figure 4 : A schematic diagram of the structure of the screen frame described in this utility model; Figure 5 : An installation diagram of the screen frame described in this utility model; Figure 6 Top view of this utility model; Figure 7 : A schematic diagram of the structure of the baffle described in this utility model; Figure 8 : An internal view of the first screen of this utility model; Figure 9 : Figure 8 Enlarged view of point A in the middle; Figure 10 : A schematic diagram of the structure of this utility model with the first screen removed; Figure 11 : Figure 10 Enlarged view of point B in the middle; Figure 12 : A schematic diagram of the structure of the unlocking lock described in this utility model; Figure 13 : A schematic diagram of the irregular protrusion described in this utility model; Figure 14 : A schematic diagram of how the lock of this utility model is opened; Figure 15 : A schematic diagram of the present invention when the lock is opened or locked. Detailed Implementation

[0013] The present invention will be further described below with reference to the accompanying drawings and examples: The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0016] like Figure 1As shown, a double-sided ultra-thin lightbox includes a support frame 1 and at least two display screens. The display screens include a first screen 2 disposed on the front side of the support frame 1 and a second screen 3 disposed on the rear side to form a double-sided display. The first screen 2 and the second screen 3 can simultaneously display advertisements or information to viewers in two opposite directions, improving the information dissemination efficiency and advertising value of the lightbox.

[0017] like Figures 3 to 5 As shown, the support frame 1 includes a keel 13 and a top frame 12 and a base plate 11 respectively connected to the top and bottom of the keel 13. The tops of the first screen 2 and the second screen 3 are respectively hinged to the top frame 12 via hinges 4. Screen frames 14 for mounting the first screen 2 and the second screen 3 are hinged to the front and rear sides of the support frame 1. Gas springs are connected between the support frame 1 and the first screen 2 and the second screen 3.

[0018] Specifically, a screen frame 14 is hinged to the support frame 1, and the first screen 2 and the second screen 3 are connected to the screen frame 14, enabling the opening and closing of the two screens. The entire screen can open upwards like a door, preferably using a gas spring, opening slowly upwards.

[0019] The top of the screen is connected to the top frame 12 via hinge 4, while the middle or side of the screen is connected to the support frame 1 via hinge points of the screen frame 14. The hinges of the screen frame 14 provide a flexible interface for screen installation, while the top hinge 4 ensures a stable trajectory when the screen is opened and closed. The combination of the two ensures both the stability of the lightbox when closed and the smoothness when opened.

[0020] like Figure 2 and Figure 6 As shown, the first screen 2 and the second screen 3 are offset in a direction perpendicular to the plane of the support frame 1, so that the installation positions of the two screens are offset, and the orthographic projection of the first screen 2 on the plane of the support frame 1 and the orthographic projection of the second screen 3 on the plane of the support frame 1 do not completely coincide.

[0021] Traditional double-sided lightboxes have perfectly aligned front and back screens, resulting in a very regular and heavy rectangular or square outline in the side view. The staggered design blurs and disperses the visual boundaries of the lightbox, making it no longer a single thick edge, thus weakening the overall sense of thickness.

[0022] Specifically, the cross-sectional dimensions of the keel 13 are 80mm*80mm. The overall height of the lightbox is 2.4 meters and the width is 1.3 meters. In order to accommodate internal components and ensure strength, the thickness of the central frame of traditional double-sided lightboxes is often 100mm to 200mm or even thicker. This new invention achieves an overall lightbox thinning by thinning the keel 13.

[0023] Meanwhile, the staggered structure creates an asymmetrical space within the support frame 1. This allows for more flexible arrangement of functional components such as the power module and player module within the space between the two screens. It also makes better use of the limited internal space and avoids collisions between components and the inner walls of the screens.

[0024] like Figure 7 As shown, the top frame 12 has heat dissipation holes 121, and a baffle 5 is connected to the top frame 12 above the heat dissipation holes 121, with a gap between the baffle 5 and the heat dissipation holes 121. In rainy or snowy weather, rainwater will fall from above. The baffle 5 covers the heat dissipation holes 121 to prevent rainwater, snowflakes, or large particles of debris from falling directly vertically into the heat dissipation holes 121.

[0025] like Figures 8 to 14 The support frame 1 shown is provided with a locking rod 10; the bottom of the first screen 2 and the second screen 3 are both provided with an unlocking lock 6, the unlocking lock 6 includes a hook seat 61, a hook 62 and a torsion spring 63; the bottom of the first screen 2 and the second screen 3 are both provided with a rotating rod 20, the hook seat 61 is fixed to the bottom of the screen, the rotating rod 20 is rotatably connected to the hook seat 61, the hook 62 is fitted on the rotating rod 20 and can rotate with the rotating rod 20, the torsion spring 63 is fitted on the rotating rod 20 and acts on the hook 62, providing the hook 62 with a reset torque toward the locking position; When locked, the hook 62 is hooked onto the locking rod 10 under the action of the torsion spring 63; the end of the rotating rod 20 is provided with an irregular protrusion 201, and the irregular protrusion 201 can be driven by the tool 8 with matching shape to drive the rotating rod 20 to rotate, so that the hook 62 overcomes the torque of the torsion spring 63 and disengages from the locking rod 10.

[0026] Unlocking requires using a tool 8 of a specific shape to drive the irregular protrusion 201 at the end of the rotating rod 20, thereby causing the hook 62 to overcome the torsion spring torque and disengage from the locking rod 10.

[0027] The irregularly shaped protrusion 201 is petal-shaped, with a central region and multiple protrusions radiating outward from the central region. Common general-purpose tools such as flathead and Phillips screwdrivers, wrenches, and pliers cannot engage with the irregularly shaped protrusion 201 to apply torque. The tool 8 has a groove, the shape of which matches that of the irregularly shaped protrusion 201. Only the tool 8, whose shape matches that of the irregularly shaped protrusion 201, can be inserted and drive the irregularly shaped protrusion 201, thereby rotating the rotating rod 20 to disengage the hook 62 from the locking rod 10. This effectively prevents thieves from using ordinary tools to pry or twist the lock.

[0028] The design of the unlocking lock allows for the individual locking of the two screens, ensuring the integrity of the overall structure.

[0029] In one embodiment, the plurality of protrusions are asymmetrically distributed. This asymmetrical structure disrupts conventional geometry, making it difficult to replicate a matching tool 8 through observation or simple measurement.

[0030] To further enhance anti-theft capabilities, such as Figure 15 As shown, decorative panels 301 are slidably connected to the side frames of the first screen 2 and the second screen 3, and the decorative panels 301 cover the irregular protrusions 201.

[0031] Once the decorative panel 301 is slid into place, the irregular protrusion 201 is covered, making it invisible and inaccessible from the outside. The vandal would not know the opening point of the lightbox. When maintenance is needed, the decorative panel 301 must be slid open to expose the irregular protrusion 311, and then the rotating rod 20 can be turned with tool 8 to open the lightbox.

[0032] The supporting frame 1 also includes side plates 7 disposed on both sides of the top frame 12, and the side plates 7 are provided with side heat dissipation holes 71. The power module, player module and LED light source inside the light box generate a lot of heat when working. The heat dissipation efficiency of the top heat dissipation holes 121 alone is limited, and hot air tends to accumulate at the top. When the side heat dissipation holes 71 on the side plates 7 are combined with the top heat dissipation holes 121 on the top frame 12, a multi-directional heat dissipation path is formed. Hot air is heated and rises inside the light box and is discharged from the top heat dissipation holes 121; at the same time, cooler air from outside can be drawn in through the side heat dissipation holes 71 to replenish the internal air.

[0033] The bottom of the support frame 1 is equipped with anchor bolts. The anchor bolts can be chemical anchor bolts or expansion bolts, which can be deeply and firmly anchored in solid substrates such as concrete, and can withstand long-term outdoor environmental tests (such as temperature changes, rain erosion, freeze-thaw cycles) to ensure the use of the light box.

[0034] The support frame 1 internally houses functional components, including a power module and a player module. It also includes a screen, a network module, etc. These functional components are existing technologies readily available to those skilled in the art, and therefore will not be described in detail here.

[0035] It should be noted that the hinges, gas springs, functional components, and anchors in this embodiment are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0036] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A double-sided ultra-thin lightbox, characterized in that, The system includes a support frame (1) and at least two display screens. The display screens include a first screen (2) located on the front side of the support frame (1) and a second screen (3) located on the rear side to form a double-sided display. The support frame (1) includes a keel (13) and a top frame (12) and a bottom plate (11) respectively connected to the top and bottom of the keel (13). The front and rear sides of the support frame (1) are hinged to screen frames (14) for mounting the first screen (2) and the second screen (3). The first screen (2) and the second screen (3) are offset in a direction perpendicular to the plane of the support frame (1), so that the installation positions of the two screens have an offset. The orthographic projection of the first screen (2) on the plane of the support frame (1) and the orthographic projection of the second screen (3) on the plane of the support frame (1) are not completely coincident. The tops of the first screen (2) and the second screen (3) are respectively hinged to the top frame (12) by hinges (4).

2. The double-sided ultra-thin lightbox according to claim 1, characterized in that: The top frame (12) has a heat dissipation hole (121) and a baffle (5) located above the heat dissipation hole (121) is connected to the top frame (12). There is a gap between the baffle (5) and the heat dissipation hole (121).

3. A double-sided ultra-thin lightbox according to claim 1, characterized in that: A locking rod (10) is provided on the support frame (1); an unlocking lock (6) is provided at the bottom of both the first screen (2) and the second screen (3), the unlocking lock (6) includes a hook seat (61), a hook (62) and a torsion spring (63); a rotating rod (20) is provided at the bottom of both the first screen (2) and the second screen (3), the hook seat (61) is fixed to the bottom of the screen, the rotating rod (20) is rotatably connected to the hook seat (61), and the hook (62) is fitted on the rotating rod (20) and can rotate with it. When the rod (20) rotates, the torsion spring (63) is fitted onto the rotating rod (20) and acts on the hook (62), providing the hook (62) with a reset torque toward the locking position; when locked, the hook (62) is hooked onto the locking rod (10) under the action of the torsion spring (63); the end of the rotating rod (20) is provided with a shaped protrusion (201), and the shaped protrusion (201) can be driven by a tool (8) that matches the shape to drive the rotating rod (20) to rotate, so that the hook (62) overcomes the torque of the torsion spring (63) and disengages from the locking rod (10).

4. A double-sided ultra-thin lightbox according to claim 3, characterized in that: The irregular protrusion (201) is in the shape of a multi-petaled flower, having a central region and multiple protrusions radiating outward from the central region.

5. A double-sided ultra-thin lightbox according to claim 1, characterized in that: A decorative panel (301) is slidably connected to the side frame of the first screen (2) and the second screen (3), and the decorative panel (301) covers the irregular protrusion (201).

6. A double-sided ultra-thin lightbox according to claim 5, characterized in that: The support frame (1) also includes side plates (7) disposed on both sides of the top frame (12), and the side plates (7) are provided with side heat dissipation holes (71).

7. A double-sided ultra-thin lightbox according to claim 1, characterized in that: The cross-sectional dimensions of the keel (13) are 80mm*80mm.

8. A double-sided ultra-thin lightbox according to claim 1, characterized in that: Gas springs are connected between the support frame (1) and the first screen (2) and the second screen (3).

9. A double-sided ultra-thin lightbox according to claim 1, characterized in that: The bottom of the support frame (1) is provided with anchor bolts.

10. A double-sided ultra-thin lightbox according to claim 1, characterized in that: The support frame (1) is equipped with functional components, including a power module and a player module.

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