Ultra-large ultra-thin lamp box

Abstract

The utility model relates to the technical field of advertising lamp boxes, and discloses an ultra-large-size ultra-thin lamp box which comprises a light guide plate, a containing groove is formed in the edge of the peripheral side of the light guide plate, a plurality of replacement notches are formed in the outer side wall of the peripheral side of the light guide plate, and each replacement notch is communicated with the containing groove. LED lamp strips with the number the same as that of the replacement notches are arranged in the containing groove, the LED lamp strips are arranged along the containing groove, the adjacent LED lamp strips are electrically connected by arranging connectors, the connectors and the replacement notches are arranged in a one-to-one correspondence mode, and the arrangement of the replacement notches meets the requirement that the LED lamp strips can pass through; when the LED lamp strip needs to be replaced, an operator can replace the LED lamp strip at the corresponding position by detaching the connector at the corresponding position through the corresponding replacement notch, and meanwhile, only the damaged LED lamp strip at the corresponding position needs to be replaced, so that the replacement efficiency is improved, and the replacement cost is reduced. The operation is simple and convenient, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to an ultra-large, ultra-thin lightbox, belonging to the technical field of advertising lightboxes. Background Technology

[0002] Ultra-thin light boxes are a common type of lighting equipment. By using lightweight materials and efficient LED light sources, they significantly reduce the thickness and weight of the light box while maintaining lighting effects. These light boxes are typically used for advertising displays, exhibitions, signage, and other applications requiring portability and space constraints.

[0003] Currently, these ultra-thin light boxes include a metal frame, a light guide plate, reflective paper, a diffuser plate, and LED light strips. The light guide plate has slots along its periphery, within which the metal frame and LED light strips are placed. The metal frame secures the LED light strips. The reflective paper is attached to the back of the dotted surface of the light guide plate, and the diffuser plate is fixed to the light-emitting front of the light guide plate. When this type of ultra-thin light box is in use, the LED light strips are activated. Part of the light emitted by the LED strips is emitted outwards through the light guide plate and diffuser plate, while the other part passes through the light guide plate to the reflective paper. Then, under the influence of the reflective paper, the light is emitted outwards through the light guide plate and diffuser plate, creating a converging light beam and thus achieving a good lighting effect.

[0004] However, these ultra-thin light boxes have the following problems in actual use: Because the LED chips inside the LED strips have a relatively short lifespan, unlike materials such as reflective paper, light guide plates, and diffuser plates which can last up to 10 years, the LED strips need to be replaced. Replacing the LED strips in these ultra-thin light boxes often requires removing the metal frame first, which is quite cumbersome. Furthermore, the LED strips used in these ultra-thin light boxes are usually a single strip; if a chip in one part of the strip fails, the entire strip needs to be replaced, resulting in high costs. Utility Model Content

[0005] In order to solve the above-mentioned problems existing in the prior art, this utility model provides an ultra-large and ultra-thin light box.

[0006] The technical solution of this utility model is as follows:

[0007] An ultra-thin light box with an ultra-large size includes a light guide plate. A placement groove is formed at the peripheral edge of the light guide plate. Several replacement notches are formed on the outer peripheral wall of the light guide plate. Each replacement notch is connected to the placement groove. The placement groove contains the same number of LED light strips as the number of replacement notches. The LED light strips are arranged along the placement groove. Adjacent LED light strips are electrically connected by connectors. The connectors correspond one-to-one with the replacement notches. The replacement notches are designed to allow the LED light strips to pass through.

[0008] One of the connectors is also electrically connected to a power connector.

[0009] The light guide plate has a dotted surface on its bottom surface, a reflective paper is fixedly attached to the bottom surface of the light guide plate, and a diffuser plate is fixedly attached to the top surface of the light guide plate.

[0010] The placement groove is also equipped with an aluminum profile, which is L-shaped. The side wall of the aluminum profile away from the diffuser plate is fixed to the side wall of the placement groove. The LED light strip is attached to the side wall of the aluminum profile close to the diffuser plate, and the LED beads of the light strip are facing the diffuser plate.

[0011] The bottom wall of the horizontal section of the aluminum profile is also closely fitted to the top wall of the diffuser plate.

[0012] This utility model has the following beneficial effects:

[0013] This invention features a replacement notch on a light guide plate, connecting the notch to the placement slot. Multiple shorter LED strips replace the traditional single LED strip, with the number of strips corresponding to the number of notches. Adjacent LED strips are electrically connected via connectors, each corresponding to a different notch. When replacing an LED strip, the operator simply uses the corresponding notch to disconnect the connector and replace the strip without removing the metal frame. Only the damaged LED needs to be replaced, eliminating the need to replace the entire strip. Compared to existing technologies, this invention offers advantages such as simpler operation, greater convenience, and lower costs. Attached Figure Description

[0014] Figure 1 This is an isometric view of the present invention;

[0015] Figure 2 This is an exploded view of the present invention;

[0016] Figure 3 This is a magnified view of point A;

[0017] Figure 4 This is a magnified view of point B;

[0018] Figure 5 This is a magnified view of point C.

[0019] The reference numerals in the figure are as follows:

[0020] 1. Light guide plate; 2. Placement slot; 3. Replacement notch; 4. LED light strip; 5. Connector; 6. Power connector; 7. Reflective paper; 8. Diffuser plate; 9. Aluminum profile. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0022] Example: Please refer to Figures 1-5 This embodiment provides an ultra-large, ultra-thin light box, including a light guide plate 1. A placement groove 2 is formed on the peripheral edge of the light guide plate 1. The structure of the placement groove 2 is adapted to the structure of the light guide plate 1; that is, in this embodiment, the light guide plate 1 has a rectangular structure, and therefore the placement groove 2 also has a rectangular structure, specifically a rectangular frame structure. Several replacement notches 3 are formed on the outer peripheral wall of the light guide plate 1. The number and arrangement of the replacement notches 3 can be determined according to actual conditions. In this embodiment, there are eight replacement notches 3, located at the four corners of the placement groove 2 and the middle of each side of the placement groove 2. Each replacement notch 3 is connected to the placement groove 2. The placement groove 2 contains the same number of LED light strips 4 as the number of replacement notches 3. The LED light strips 4 are arranged along the placement groove 2. In this embodiment, two LED light strips 4 are arranged on each side of the placement groove 2. Adjacent LED strips 4 are electrically connected via connectors 5. Each connector 5 corresponds one-to-one with a replacement notch 3, allowing operators to disassemble or remove the corresponding connector 5 using the replacement notch 3. The replacement notch 3 is also designed to allow the LED strips 4 to pass through, facilitating their replacement.

[0023] With the aforementioned setup, when it is necessary to replace the LED light strip 4, the operator can disassemble the connector 5 at the corresponding position by using the corresponding replacement notch 3. Then, the LED light strip 4 at the corresponding position can be taken out from the replacement notch 3 for replacement. Compared with the existing technology, there is no need to remove the metal frame, and the overall operation is simple and convenient. At the same time, when a lamp bead is damaged and causes a problem with the lighting effect, the operator only needs to replace the damaged LED light strip 4 at the corresponding position, without having to replace the entire LED light strip 4. Compared with the existing technology, this can significantly reduce costs.

[0024] In this embodiment, one of the connectors 5 is also electrically connected to a power connector 6, which is used to connect to an external power source to supply power to the LED light strip 4.

[0025] In this embodiment, the bottom surface of the light guide plate 1 is provided with a dotted pattern, and a reflective paper 7 is also fixedly provided on the bottom surface of the light guide plate 1, covering the bottom surface of the light guide plate 1. A diffuser plate 8 is also fixedly provided on the top surface of the light guide plate 1, covering the top surface portion of the light guide plate 1 located inside the placement groove 2. An aluminum profile 9 is also provided in the placement groove 2, with one aluminum profile 9 provided on each side of the placement groove 2. Each aluminum profile 9 is L-shaped, and the sidewall of each aluminum profile 9 away from the diffuser plate 8 is fixedly provided to the corresponding sidewall of the placement groove 2. Each LED strip 4 is tightly attached to the sidewall of the aluminum profile 9 close to the diffuser plate 8, and the LED beads of each LED strip 4 are facing the diffuser plate 8. The bottom wall of the horizontal section of each aluminum profile 9 is also tightly attached to the top wall of the diffuser plate 8.

[0026] With the aforementioned setup, after the LED light strip 4 is powered on and emits light, part of the light emitted by the LED light strip 4 will be transmitted through the light guide plate 1 to the diffuser plate 8, and then diffused outwards through the diffuser plate 8. The other part of the light will be transmitted through the dotted surface of the light guide plate 1 to the reflective paper 7, and after being reflected by the reflective paper 7, it will pass back through the light guide plate 1 and finally be transmitted to the diffuser plate 8, and then diffused outwards through the diffuser plate 8. The setting of the reflective paper 7 and the diffuser plate 8 can avoid the occurrence of light leakage, thereby ensuring the luminous effect of the light box. The setting of the aluminum profile 9 plays a role in fixing the LED light strip 4 and the diffuser plate 8, so as to prevent the light box from falling apart and ensure the structural stability of the light box.

[0027] Traditional light guide plates 1 are limited by the travel distance of laser dotting machines, with a maximum size of 1.5 meters x 1.5 meters being the standard. However, market demand far exceeds this size. To meet market demands, the processing steps for the light guide plate 1 in this embodiment are as follows:

[0028] 1. Machining of the light guide plate 1: Mill a groove around the perimeter. The groove is the placement groove 2. The specific dimensions of the placement groove 2 are determined according to the actual situation. Then, make the corresponding replacement notch 3 on the placement groove 2.

[0029] 2. Dot processing of light guide plate 1:

[0030] A. Use the existing G2 software to design the density and size of the network points;

[0031] B. Use existing CAD software to lay out the dots, and divide the dot area into two parts according to the required size. Import the dots of the first part into the laser dotting equipment software, and position the left and top of the dots according to the outer frame of the dot size.

[0032] C. Place the light guide plate 1 on the equipment platform and process the first part of the dots from top to bottom;

[0033] D. Place a dot on the left positioning block and align it with the last row of dots for initial positioning during splicing;

[0034] E. Draw two small squares with laser at the left and right ends, aligning the center of the squares horizontally with the center of the last row of dots for precise positioning;

[0035] F. Draw small squares on both ends using laser. Connect a magnifying glass to the measurement software, measure and record the left-right and up-down differences of the left square. Then measure the right-right and up-down differences of the right square. In the first case, the two squares are parallel. In this case, move the laser dotting software left, right, and up and down according to the measurement data. In the second case, the two squares are not parallel. Export the measured graphic as a CAD file, measure the offset angle in the CAD file, and then rotate and move the laser dotting software left, right, and up and down for precise positioning.

[0036] G. After positioning, begin processing the second part of the dots. The spacing between dots at the splicing point and the spacing between dots at other locations should be controlled within ±0.05mm. This action can be repeated and does not limit the length of the light guide plate 1, thus adapting to market demands.

[0037] The assembly steps in this embodiment are as follows:

[0038] 1. Apply double-sided tape around the dot surface of the light guide plate 1, i.e. the bottom surface of the light guide plate 1. Then, align the reflective paper 7 with the light guide plate 1 and peel off the double-sided tape on three sides. Use a silicone roller to remove the air between the reflective paper 7 and the light guide plate 1 and peel off the last side of the double-sided tape to fix the reflective paper 7 to the dot surface of the light guide plate 1.

[0039] 2. Apply double-sided tape around the top surface of the light guide plate 1, then align the diffuser plate 8 with the top surface of the light guide plate 1 inside the placement groove 2. After that, peel off the double-sided tape on all four sides and pass it through a silicone roller so that the light guide plate 1 and the diffuser plate 8 can be better bonded together.

[0040] 3. Insert the aluminum profile 9 into the placement slot 2. The aluminum profile 9 can be fixed with aluminum foil.

[0041] 4. Place the LED light strip 4 into the placement slot 2, and use the connector 5 to electrically connect the adjacent LED light strips 4 together. At the same time, the connector 5 should be set to correspond with the replacement connector.

[0042] 5. Connect the power connector 6 to one of the connectors 5 to form the ultra-thin light box.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An ultra-large size ultra-thin light box, comprising a light guide plate (1), a placing groove (2) is arranged at the position of the peripheral side edge of the light guide plate (1), characterized in that: The peripheral outer wall of the light guide plate (1) is provided with a plurality of replacement notches (3), each replacement notch (3) is in communication with the placement groove (2), the placement groove (2) is provided with a plurality of LED light bars (4) which are the same in number as the replacement notches (3), the LED light bars (4) are arranged along the placement groove (2), adjacent LED light bars (4) are electrically connected through the connecting heads (5), the connecting heads (5) are one-to-one corresponding to the replacement notches (3), and the replacement notches (3) are arranged to allow the LED light bars (4) to pass through.

2. The oversized, ultra-thin light box of claim 1, wherein: One of the connecting heads (5) is further electrically connected with a power connector (6).

3. The oversized, ultra-thin light box of claim 1, wherein: The bottom surface of the light guide plate (1) is provided with dots, the bottom surface of the light guide plate (1) is further provided with a reflecting paper (7), and the top surface of the light guide plate (1) is further provided with a diffusion plate (8).

4. The oversized, ultra-thin light box of claim 3, wherein: The placement groove (2) is further provided with an aluminum profile (9), the aluminum profile (9) is provided in an L-shaped structure, the side wall of the aluminum profile (9) away from the diffusion plate (8) is fixedly arranged on the groove side wall of the placement groove (2), the LED light bar (4) is closely arranged on the side wall of the aluminum profile (9) close to the diffusion plate (8), and the lamp beads of the LED light bar (4) are arranged towards the diffusion plate (8).

5. A large size ultra-thin light box according to claim 4, characterized in that: The bottom wall of the horizontal section structure of the aluminum profile (9) is further closely arranged on the top wall of the diffusion plate (8).

Images