Light guide plate structure for freezers

Abstract

This utility model discloses a light guide plate structure for a freezer, including a light guide plate and four side frames located around the light guide plate. The four side frames are connected end to end by corner buckles. Each side frame contains an LED light strip. The end faces of the side frames are flush with and fitted to the end faces of the corner buckles. Through holes are provided at both ends of the side frames for the LED light strip wires to pass through. The wires of two adjacent side frames pass through the through holes and connect in the corresponding corner buckles. A cavity for accommodating the wires is provided in each corner buckle, and the cavity communicates with the through holes. A glue-filling hole is provided on the corner buckle, communicating with the cavity, to fill the cavity with glue and thus seal it. This utility model is not only waterproof but also easy to maintain.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and in particular to a light guide plate structure for a refrigerator. Background Technology

[0002] Panel lights are widely used, such as in dessert display cases, where they are often added to the freezers to enhance the display effect. Currently, panel lights for freezers typically use a light guide plate, with a frame fixed around its perimeter with glue. An LED strip is then placed around the light guide plate, meaning the LED strip, wires, and frame are all glued to the light guide plate. This process is not only cumbersome to manufacture but also difficult to maintain later. Utility Model Content

[0003] The purpose of this utility model is to design a light guide plate structure for a freezer to overcome the shortcomings of the above-mentioned technology.

[0004] This utility model designs a light guide plate structure for a freezer, including a light guide plate and four side frames located around the light guide plate. The four side frames are connected end to end by corner buckles. Each side frame is equipped with an LED light strip. The end faces of the side frames are flush with and fit against the end faces of the corner buckles. The end faces of the side frames have through holes for the LED light strip wires to pass through. The wires of two adjacent side frames pass through the through holes and are connected in the corresponding corner buckles. The corner buckles are equipped with cavities to accommodate the wires. The cavities are connected to the through holes. The corner buckles are equipped with glue-filling holes that communicate with the cavities, so as to fill the cavities with glue through the glue-filling holes, thereby sealing the cavities.

[0005] Preferably, the corner buckle includes a base and a cover. The outer end faces of the two sides of the base are fitted and connected to the end faces of the corresponding side frames. The base has a notch, and the inner walls on both sides of the notch serve as the inner end faces of the base sides. The outer end face of the base has a protrusion. The side frame is a profile or tube structure, and the surface of the side frame has a groove structure. The protrusion is inserted from the end of the side frame into the groove structure to form a limit. The surface of the notch has a mounting groove. The edge of the cover has a protrusion. The cover is inserted into the mounting groove through the protrusion to form a positioning with the base. After the cover is connected to the base, it surrounds the notch to form a cavity. The glue-filling hole is opened on the cover. The side end of the base has a through hole. The through hole communicates with the cavity through the through hole. The wires of the adjacent side frames pass through the through hole and the through hole in sequence and are connected to each other in the cavity.

[0006] Further optimization involves providing a metal sheet on the bottom surface of the notch, with the end of the wire connected to the metal sheet to connect the wires of two adjacent side frames, thereby connecting the LED light strips of the four side frames.

[0007] Further optimization involves extending ears from the top of the cover towards the side frames on both sides. The ears are provided with mounting holes, and fasteners are installed in the mounting holes to connect the ears to the side frames.

[0008] Further optimization involves providing a mounting post on the cover, with a threaded inner hole on the mounting post, and a threaded hole on the base. The threaded hole and the threaded inner hole are connected by bolts, thereby fixing the cover and the base together.

[0009] Further optimization involves providing a baffle at the port of the through hole, with a clearance hole on the baffle for guiding the flow, the baffle being used to prevent glue from entering the through hole.

[0010] As a preferred option, the base of one of the corner buckles has a carrying loop on the front.

[0011] Preferably, the side frame is also provided with a lens extending in the same direction as the LED light strip. The lens is located between the LED light strip and the side end of the light guide plate, and there is a gap between the LED beads on the LED light strip and the lens.

[0012] Further optimization involves providing a PCB board within the side frame that is electrically connected to the LED light strip, with the chip on the PCB board being a constant voltage and constant current IC chip.

[0013] Further optimizations include using nylon for the corner buckles and / or using aluminum alloy for the side frames.

[0014] The technical advantages of this invention are as follows: A lens is provided between the light guide plate and the LED light strip, with a certain gap between the lens and the LED light strip, so that the lens concentrates the light emitted by the LED light strip, avoiding light scattering to a certain extent and thus improving the light intensity; the four side frames around the light guide plate are connected end to end by corner buckles, which are square in shape, and the end faces of the side frames are correspondingly horizontal straight surfaces, so that the end faces of the side frames abut and fit with the end faces of the corner buckles. This is different from the commonly used 45-degree bevel fitting, which requires higher precision, while the fitting between horizontal straight surfaces has relatively lower precision requirements and is easier to process and manufacture; the corner buckles have cavities inside, and the wires of two adjacent side frames extend into the corner buckle cavities to form connections, which facilitates the installation and removal of wires and facilitates maintenance; the corner buckle cavities are filled with waterproof glue, which, after solidification, waterproofs the cavity, fixes the connection points of the wires, and prevents water from entering the side groove where the LED light strip is located from the corner buckles; the corner buckles have a lifting ring on the front for easy manual lifting of the light guide plate. Attached Figure Description

[0015] Figure 1 This is a front structural view of the present invention;

[0016] Figure 2This is a reverse structural diagram of the present invention;

[0017] Figure 3 This is an exploded view of the structure of the base and cover in one of the corner buckles;

[0018] Figure 4 This is an exploded view of the structure of the base and cover in another corner buckle;

[0019] Figure 5 It is an exploded view of the structure between the side frame, base and cover;

[0020] Figure 6 It is an exploded view of the side frame, LED light strip, lens and corner buckle structure;

[0021] Figure 7 This is a cross-sectional view of the side frame;

[0022] Figure 8 This is a reverse structural diagram of the corner buckle cover.

[0023] In the diagram: 1. Light guide plate; 2. Side frame; 21. Perforation; 22. Groove structure; 23. Side groove; 3. Corner buckle; 31. Base; 311. Protrusion; 312. Mounting groove; 313. Through hole; 32. Cover; 321. Cavity; 322. Notch; 323. Glue hole; 324. Raised strip; 325. Ear; 326. Mounting hole; 327. Mounting post; 4. LED light strip; 5. Wire; 6. Metal sheet; 7. Baffle; 71. Clearance hole; 8. Lifting ring; 9. Lens; 10. PCB board. Detailed Implementation

[0024] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0025] The device includes a light guide plate 1 and four side frames 2 located around the light guide plate 1. The four side frames 2 are connected end to end by corner buckles 3. Each side frame 2 is provided with an LED light strip 4. The end faces of the side frames 2 are flush with and fit against the end faces of the corner buckles 3. The two ends of the side frames 2 are provided with through holes 21 for the wires 5 of the LED light strip 4 to pass through. The wires 5 of two adjacent side frames 2 pass through the through holes 21 and are connected in the corresponding corner buckles 3. The corner buckles 3 are provided with cavities 321 to accommodate the wires 5. The cavities 321 are connected to the through holes 21. The corner buckles 3 are provided with potting holes 323 that are connected to the cavities 321, so that the cavities 321 can be potted with glue through the potting holes 323, thereby sealing the cavities 321.

[0026] 2. The light guide plate 1 structure for a freezer according to claim 1, characterized in that the corner buckle 3 includes a base 31 and a cover 32, the outer end faces of the two side ends of the base 31 are fitted and connected to the end faces of the corresponding side frame 2, the base 31 has a notch 322, the inner walls on both sides of the notch 322 serve as the inner end faces of the side ends of the base 31, the outer end face of the base 31 is provided with a protrusion 311, the side frame 2 is a profile or tube structure, the surface of the side frame 2 has a groove structure 22, and the protrusion 311 is located from the side... The end of the frame 2 is inserted into the groove structure 22 to form a limit. The surface of the notch 322 is provided with a mounting groove 312. The cover 32 of this utility model includes a light guide plate 1 and a side frame 2. In this embodiment, the light guide plate 1 is square in shape, and there are four side frames 2, which are respectively installed on the four sides of the light guide plate 1. The side frames 2 are profile or tubular structures. The surface of the side frame 2 has a groove structure 22 formed along the length direction. The side frame 2 also forms a side groove 23. The light guide plate 1 is inserted into the side groove 23, and the side frame 2 is located on the side of the side groove 23. The light guide plate 1 extends forward along the edge of the light guide plate 1, ensuring that both the front and back sides of the light guide plate 1 are in contact with the upper and lower edges of the side frame 2 to guarantee stability. The end face of the light guide plate 1 is located at or directly opposite the side groove 23, which extends along the length of the side frame 2. Each side frame 2 contains an LED light strip 4 and a PCB board 10, both located within the side groove 23. The PCB board 10 is attached to the inner wall of the side groove 23 away from the light guide plate 1, and the LED light strip 4 is attached and fixed to the PCB board 1. On the end face of the light guide plate 1, a lens 9 extending in the same direction as the LED strip 4 is provided inside the side frame 2. The lens 9 is located between the LED strip 4 and the side end of the light guide plate 1. There is a gap between the LED beads on the LED strip 4 and the lens 9. In this way, most of the light emitted by the LED beads of the LED strip 4 can be focused onto the lens 9 and refracted onto the light guide plate 1 through the lens 9. Therefore, the brightness is high and the light energy utilization rate is high, and it will not be wasted. In this way, smaller power LED beads can be used, but the brightness and light energy utilization rate of larger power LED beads on the market can be achieved.

[0027] It should be noted that lens 9 is a conventional technical method, usually set by offsetting the convex point, and the specific structural design will not be described in detail here.

[0028] The four side frames 2 are connected end to end by corner buckles 3. Since the side frames 2 are profiles or tubes, the end faces of the side frames 2 are flush with and fit against the end faces of the corner buckles 3. That is, the end faces of the side frames 2 are horizontal straight surfaces, and the end faces of the corner buckles 3 are also horizontal straight surfaces. In this way, the end faces of the side frames 2 and the end faces of the corner buckles 3 can fit against each other. This is different from the fitting between beveled end faces on the market, which requires a very precise bevel angle. The fitting between horizontal straight end faces is very easy to achieve, as long as the end faces are horizontal. The two ends of the side frames 2 are provided with through holes 21 for the wires 5 of the LED light strip 4 to pass through. The through holes 21 extend along the length of the side frames 2. In this embodiment, the LED light strip 4 and the PCB board 10 are both positioned... The guide is located in the side groove 23 of the side frame 2, and the guide is located at both ends of the PCB board 10. That is, the through hole 21 is located at both ends of the side groove 23. The wires 5 of two adjacent side frames 2 pass through the through hole 21 and are connected in the corresponding corner buckle 3. The corner buckle 3 is provided with a cavity 321 to accommodate the wires 5. The cavity 321 is connected to the through hole 21. The ends of the wires 5 of two adjacent side frames 2 are connected in the cavity 321 by welding or knotting, so that the LED light strips 4 in the four side frames 2 are connected in series. In contrast, the wires 5 in the light guide plate 1 structure on the market go around the edge of the light guide plate 1 and are fixed between the light guide plate 1 and the side frame 2 with glue. This is not only troublesome to manufacture, but also the glue is not easy to handle, so it is not easy to maintain.

[0029] The corner buckle 3 has a potting hole 323 that communicates with the cavity 321, so that the cavity 321 can be potted with glue through the potting hole 323. The cavity 321 will be filled with glue, and the connection of the wire 5 will be solidified by the glue to form a seal. At the same time, the glue will also enter the through hole 21 to seal and fix the wire 5 at the through hole 21, thereby forming a seal between the corner buckle 3 and the side frame 2, preventing moisture or water from entering the LED light strip 4 and PCB board 10 through the through hole 21, and at the same time preventing the two wires 5 from detaching.

[0030] Furthermore, the corner buckle 3 includes a base 31 and a cover 32, with the base 31 on top and the cover 32 on the bottom. When the cover 32 needs to be installed or removed, the entire light guide plate 1 structure can be reversed. From the reverse side, the base 31 has a notch 322, which is opened from top to bottom. That is, the base 31 includes a bottom and two side ends on both sides of the bottom. The outer end faces of the two side ends of the base 31 are fitted and connected to the end faces of the corresponding side frame 2. The inner walls on both sides of the notch 322 serve as the inner end faces of the side ends of the base 31. The outer end face of the base 31 is provided with a protrusion 311, which is inserted from the end of the side frame 2 into the groove structure 22 to form a limit. The side end of the base 31 is also provided with fasteners, such as self-tapping screws. The self-tapping screws are screwed in from the side end of the base 31 and extend into the groove structure 22 to form a screw connection with the inner wall of the groove structure 22, thereby fixing the base 31 to the side frame 2. The advantage of using steel or tubing for the side frame 2 is that it has a grooved surface, allowing self-tapping screws and protrusions 311 to connect without the need for additional drilling, which is very convenient.

[0031] In addition, the bottom surface of the notch 322 is provided with a mounting groove 312, and the edge of the cover 32 is provided with a protrusion 324. The cover 32 is inserted into the mounting groove 312 through the protrusion 324 and is positioned with the base 31. The top of the cover 32 extends into the side frame 2 on both sides with ears 325. The ears 325 are provided with mounting holes 326. Fasteners are provided in the mounting holes 326 to connect the ears 325 with the side frame 2. The cover 32 is provided with a mounting post 327. The mounting post 327 is provided with a threaded inner hole. The base 31 is provided with a threaded hole. The threaded hole and the threaded inner hole are connected by bolts, so that the cover 32 and the base 31 are fixedly connected. The above are all ways to fix the base 31 and the cover 32 from different positions. Finally, the cover 32 can be stably fixedly connected to the base 31.

[0032] After the cover 32 is connected to the base 31, it forms a cavity 321 with the notch 322. The glue-filling hole 323 is opened on the cover 32. The side end of the base 31 is provided with a through hole 313. The through hole 21 is connected to the cavity 321 through the through hole 313. The wires 5 of the adjacent side frame 2 pass through the through hole 21 and the through hole 313 in sequence and are connected to each other in the cavity 321. It should be noted that in this embodiment, the glue-filling hole 323 on the corner buckle 3 can be one or two. When the corner buckle 3 is provided with two glue-filling holes 323, one is used to fill glue, and the other is used to observe whether the glue overflows. If the cavity 321 is full of glue, the glue will overflow from the other filling hole. In this way, it is possible to intuitively know whether the glue is full.

[0033] Furthermore, a metal plate 6 is provided on the bottom surface of the base 31, which is the bottom surface of the notch 322. The end of the wire 5 is connected to the metal plate 6 by welding or fastening, so that the wires 5 of the two adjacent side frames 2 are connected and conductive through the metal plate 6, thereby connecting the LED light strips 4 of the four side frames 2. The advantage of this setting is that it is convenient to connect the wires 5 uniformly to the metal plate 6, which is convenient for later maintenance and disassembly. It should be noted that this utility model also includes a power cord. The end of the power cord is connected to one of the corner buckles 3. The end of the wire 5 of the power cord is connected to the metal plate 6 inside the corner buckle 3 by welding or fastening. Therefore, it can be seen that the setting of the metal plate 6 facilitates the connection of each wire 5.

[0034] Furthermore, a baffle 7 is provided at the port of the through hole 313. The baffle 7 has a clearance hole 71 for guide passage. The baffle 7 is used to prevent glue from entering the through hole 21. The baffle 7 is made of silicone material. In this way, the baffle 7 can be stuck in the through hole 313 by deformation and bending. Then the glue in the cavity 321 will enter the through hole 313. After the glue solidifies, it will position the baffle 7 in the through hole 313. The baffle 7 not only reduces the size of the through hole 313 and prevents a large amount of glue from entering the through hole 21 after passing through the through hole 313, but also serves to fix the wire 5.

[0035] Furthermore, the base 31 of one corner buckle 3 has an integrated protrusion on the front, and a hole is opened on the protrusion. The lifting ring 8 passes through the hole to form a connection, so as to facilitate lifting the entire light guide plate 1 by lifting the lifting ring 8.

[0036] Furthermore, the side frame 2 is equipped with a PCB board 10 that is electrically connected to the LED light strip 4. The chip on the PCB board 10 is a constant voltage and constant current IC chip, which makes the light emission more stable. The IC chip has stable performance and low power consumption, and the energy saved can be used to compensate for the light energy and improve the illumination.

[0037] Furthermore, corner buckle 3 is made of nylon material.

[0038] Furthermore, the side frame 2 is made of aluminum alloy.

[0039] Furthermore, the PCB board 10 can be a double-layer or four-layer board, that is, a thicker base layer is formed at the bottom, while the wiring layer is located on the top one or two layers. After the PCB board 10 is attached to the inner wall of the side groove 23 with adhesive, the thicker base layer can effectively resist high voltage and resistance to breakdown.

[0040] This utility model is not limited to the above-described preferred embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in their shape or structure, any technical solution that is the same as or similar to this application falls within the protection scope of this utility model.

Claims

1. A light guide plate structure for a freezer, characterized in that, It includes a light guide plate (1) and four side frames (2) located around the light guide plate (1). The four side frames (2) are connected end to end by corner buckles (3). Each side frame (2) is provided with an LED light strip (4). The end faces of the two ends of the side frame (2) are flush with and fit the end faces of the corner buckles (3). The two ends of the side frame (2) are provided with through holes (21) for the wires (5) of the LED light strip (4) to pass through. Adjacent two side frames The wire (5) of the frame (2) passes through the through hole (21) and is connected in the corresponding corner buckle (3). The corner buckle (3) is provided with a cavity (321) to accommodate the wire (5). The cavity (321) is connected to the through hole (21). The corner buckle (3) is provided with a glue-filling hole (323) that is connected to the cavity (321) so that glue can be filled into the cavity (321) through the glue-filling hole (323) to seal the cavity (321).

2. The light guide plate structure for a freezer according to claim 1, characterized in that, The corner buckle (3) includes a base (31) and a cover (32). The outer end faces of the two sides of the base (31) are fitted and connected to the end faces of the corresponding side frame (2). A notch (322) is provided on the base (31). The inner walls on both sides of the notch (322) serve as the inner end faces of the sides of the base (31). A protrusion (311) is provided on the outer end face of the base (31). The side frame (2) is a profile or tube structure. The surface of the side frame (2) has a groove structure (22). The protrusion (311) is inserted from the end of the side frame (2) into the groove structure (22) to form a limit. The surface of the notch (322) is provided with an installation groove. 312), the edge of the cover (32) is provided with a protrusion (324), the cover (32) is inserted into the mounting groove (312) through the protrusion (324) and is positioned with the base (31), the cover (32) is connected to the base (31) and surrounds the notch (322) to form a cavity (321), the glue hole (323) is opened on the cover (32), the side end of the base (31) is provided with a through hole (313), the through hole (21) is connected to the cavity (321) through the through hole (313), and the wires (5) of the adjacent side frame (2) pass through the through hole (21) and the through hole (313) in sequence and are connected to each other in the cavity (321).

3. The light guide plate structure for a freezer according to claim 2, characterized in that, A metal sheet (6) is provided on the bottom surface of the notch (322), and the end of the wire (5) is connected to the metal sheet (6) so that the wires (5) of the two adjacent side frames (2) are connected and conductive, thereby making the LED light strips (4) of the four side frames (2) connected.

4. The light guide plate structure for a freezer according to claim 2, characterized in that, The top of the cover (32) extends into ear portions (325) towards the side frames (2) on both sides. The ear portions (325) are provided with mounting holes (326), and fasteners are provided in the mounting holes (326) to connect the ear portions (325) with the side frames (2).

5. The light guide plate structure for a freezer according to claim 4, characterized in that, The cover (32) is provided with a mounting post (327), the mounting post (327) is provided with a threaded inner hole, the base (31) is provided with a threaded hole, and the threaded hole and the threaded inner hole are connected by bolts, so that the cover (32) and the base (31) are fixedly connected.

6. The light guide plate structure for a freezer according to claim 2, characterized in that, A baffle (7) is provided at the port of the through hole (313). The baffle (7) has a clearance hole (71) for guide passage. The baffle (7) is used to prevent glue from entering the through hole (21).

7. The light guide plate structure for a freezer according to claim 1, characterized in that, One of the corner buckles (3) has a handle (8) on the front of its base (31).

8. The light guide plate structure for a freezer according to claim 1, characterized in that, The side frame (2) is also provided with a lens (9) extending in the same direction as the LED light strip (4). The lens (9) is located between the side end of the LED light strip (4) and the light guide plate (1). There is a gap between the LED beads on the LED light strip (4) and the lens (9).

9. The light guide plate structure for a freezer according to claim 8, characterized in that, The side frame (2) is provided with a PCB board (10) that is electrically connected to the LED light strip (4). The chip on the PCB board (10) is a constant voltage and constant current IC chip.

10. The light guide plate structure for a freezer according to claim 2, characterized in that, The corner buckle (3) is made of nylon; and / or the side frame (2) is made of aluminum alloy.

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