Refrigerator air duct composite surface light source
By setting a limiting component inside the refrigerator air duct injection molded part, the problem of relative movement between the light guide plate and adjacent parts during transportation and use is solved, the light guide plate is stably fixed, light spots and scratches are avoided, and the lighting effect and aesthetics of the refrigerator are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO ZHUOYINGSHE TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-31
AI Technical Summary
During transportation and use, the light guide plate of the existing refrigerator air duct composite surface light source is prone to relative movement with adjacent components, resulting in scratches or damage and affecting the lighting effect.
Limiting components are installed in the mounting groove of the air duct injection molded part. The first limiting component abuts against the light guide plate and the side wall of the mounting groove. Combined with the second limiting component and the light strip, the light guide plate is fixed at multiple points to prevent relative movement.
It effectively prevents the light guide plate from slipping with the air duct injection parts and diffusion layer during transportation and use, avoids light spot formation, improves lighting effect and protects the light strip, adapts to warping deformation and enhances aesthetics.
Smart Images
Figure CN224580183U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of refrigerator and freezer technology, and in particular relates to a composite surface light source for refrigerator air duct. Background Technology
[0002] In existing refrigerator designs, some air duct composite surface light sources adopt an integrated structural design of "refrigerator air duct - light guide plate - optical film layer", which integrates the original surface light source and air duct back panel into one, thereby reducing material usage and saving material and labor costs.
[0003] In existing duct-based composite surface light source assembly structures, the light guide plate is often directly stacked between the duct injection molded part and the diffusion layer, lacking a mechanism to limit the light guide plate's position within the plane. During the transportation and handling of the refrigerator or surface light source assembly, it is inevitably subjected to vibration, impact, or bumps. The light guide plate is highly susceptible to relative movement with the adjacent diffusion layer or the inner wall of the duct injection molded part, resulting in scratches or damage to the surface of the light guide plate. This, in turn, causes light spots when the surface light source is lit, affecting the lighting effect and user experience. Utility Model Content
[0004] The purpose of this utility model is to solve one of the above-mentioned technical problems and provide a composite surface light source for refrigerator air ducts. By setting a limiting member in the mounting groove of the air duct injection molded part, the light guide plate is effectively limited to prevent relative movement with adjacent parts and scratches, thereby avoiding the generation of light spots.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A composite surface light source for refrigerator air ducts, comprising: The air duct injection molded part is provided with a mounting groove, and a first limiting member is provided on at least one edge of the mounting groove; A light guide layer is disposed in the mounting groove and includes a light-emitting surface and four sides, with a pair of opposite sides respectively abutting against the first limiting member and the side wall of the mounting groove. A diffusion layer covers the light-emitting surface of the light guide layer; The light strip is installed in the mounting groove and extends along the length of the side of the light guide layer.
[0006] In some embodiments of this utility model, a second limiting member is provided on the light strip; The two opposite sides of the light guide layer abut against the second limiting member and the side wall of the mounting groove, respectively.
[0007] In some embodiments of this utility model, the light strip includes a base plate and multiple LED beads; The base plate is connected to the injection molded air duct; multiple LED beads are arranged on the base plate in the direction of the light guide plate, and the second limiting member is set between two adjacent LED beads.
[0008] In some embodiments of this utility model, the base plate is fitted to the bottom wall of the mounting groove.
[0009] In some embodiments of this utility model, the first limiting member is disposed at the four corners of the mounting groove.
[0010] In some embodiments of this utility model, the first limiting member includes at least two, and the at least two first limiting members are symmetrically arranged at both ends of the light strip.
[0011] In some embodiments of this utility model, a dispensing area is formed between the mounting groove, the first limiting member, and the light guide layer, and sealant is provided in the dispensing area.
[0012] In some embodiments of this utility model, a border is formed by screen printing on the surface of the diffusion layer, and the border completely covers the light strip and the first limiting member.
[0013] In some embodiments of this utility model, a reflective layer is further included, which is disposed between the light guide layer and the air duct injection molded part.
[0014] In some embodiments of this utility model, the diffusion layer and the light guide layer are both rectangular, and the mounting groove is a rectangular groove.
[0015] The beneficial effects of this utility model are as follows: 1. This utility model sets a first limiting member in the air duct injection molded part, so that it cooperates with the groove wall of the mounting groove to clamp and fix the light guide plate, preventing the light guide layer from slipping with the air duct injection molded part and the diffusion layer during transportation and use, thus fundamentally avoiding the problem of scratches on the light guide layer and the generation of light spots. 2. This utility model further provides a second limiting member on the light strip, which cooperates with the groove wall of the mounting groove to further fix the light guide plate; 3. In this utility model, the base plate of the light strip is fitted to the bottom wall of the mounting groove. On the one hand, the heat generated by the LED light beads can be quickly discharged through the air duct injection molded part. On the other hand, the light strip can adapt to the warping deformation of the air duct injection molded part during transportation or use, thus avoiding damage to the light strip. 4. In this utility model, a sealant is provided between the mounting groove, the first limiting member and the light guide layer, which can further prevent the light guide layer from moving slightly. At the same time, it can be covered by the frame of the diffusion layer to avoid affecting the aesthetics of the surface light source. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1This is an exploded structural diagram of a composite surface light source for a refrigerator air duct; Figure 2 This is a structural diagram of the air duct injection molded parts, light guide layer, and light strip; Figure 3 for Figure 2 Enlarged view of part A in the middle; Figure 4 This is a structural schematic diagram of the injection-molded air duct component; The attached figures are labeled as follows: 1. Injection molded air duct component; 11. Mounting groove; 12. First limiting component; 2. Light guide layer; 3. Diffusion layer; 4. LED strip; 41. Base plate; 42. LED beads; 43. Second limiting component; 5. Reflective layer. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.
[0019] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without any creative effort.
[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
[0021] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion.
[0022] 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] The technical solution of this utility model will be described in detail below with reference to specific embodiments and the accompanying drawings.
[0024] As attached Figure 1 - Appendix Figure 4 As shown in the schematic embodiment of the refrigerator air duct composite surface light source of this utility model, the composite surface light source includes an air duct injection molded part 1, a light guide layer 2, a diffusion layer 3, and a light strip 4.
[0025] The air duct injection molded part 1 is an integrally injection molded ABS or HIPS part, with its surface recessed inward to form a rectangular mounting groove 11. Each of the opposite sides of the mounting groove 11 is provided with an integrally molded first limiting member 12. In this embodiment, the first limiting member 12 is a rectangular boss.
[0026] The light guide layer 2 is a rectangular plate structure made of PMMA or PC material, which is set in the mounting groove 11. It has a light-emitting surface, a back surface opposite to the light-emitting surface, and four side surfaces. A pair of opposite side surfaces abut against the side wall of the boss of the first limiting member 12 and the side wall of the mounting groove 11 to achieve horizontal limiting. The back surface of the light guide layer 2 is attached to the bottom wall of the mounting groove 11 to achieve vertical limiting. This prevents the light guide layer 2 from slipping relative to the air duct injection molded part 1 and the diffuser layer 3 during transportation and use.
[0027] The diffusion layer 3 is a plate-shaped structure made of PS material (polystyrene). Its entire surface is attached to the light-emitting surface of the light guide layer 2 to homogenize the light in the light guide layer 2 and to shield some of the defects in the light guide layer 2.
[0028] The light strip 4 extends along the length of the light-incident side of the light guide layer 2 and is fixed in the mounting groove 11, and is connected to a wire harness.
[0029] The aforementioned diffusion layer 3, light guide layer 2, and LED light strip 4 constitute a surface light source component, wherein the air duct injection molded part 1 is equivalent to the air duct back plate component of the prior art, which integrates the surface light source and the air duct back plate in the prior art into one, thereby saving material costs and labor costs.
[0030] In the above illustrative embodiment, the light guide plate is firmly fixed by the clamping of the first limiting members 12 on both sides and the side wall of the mounting groove 11, so that the light guide layer 2 will not be displaced during transportation vibration, thus fundamentally avoiding the problem of scratches on the light guide layer 2 and the generation of light spots.
[0031] In some embodiments of this utility model, a second limiting member 43 is provided on the light strip 4. The second limiting member 43 is a rectangular protrusion provided on the back plate of the light strip 4, and the height of the second limiting member 43 matches the thickness of the light guide layer 2.
[0032] The two opposite sides of the light guide layer 2 abut against the sidewalls of the second limiting member 43 and the mounting groove 11, respectively, to further limit the light guide layer 2.
[0033] In some embodiments of this utility model, the light strip 4 includes a base plate 41 and a plurality of LED beads 42.
[0034] The base plate 41 is fixedly connected to the air duct injection molded part 1.
[0035] Multiple LED beads 42 are arranged on the base plate 41 in the direction of the light guide plate, so that the LED beads 42 emit light towards the side of the light guide layer 2.
[0036] The second limiting member 43 is positioned between two adjacent LED beads 42 to avoid blocking the light.
[0037] In some embodiments of this utility model, multiple second limiting members 43 are provided, which are evenly distributed among the multiple lamp beads 42.
[0038] In some embodiments of this utility model, the base plate 41 is attached to the bottom wall of the mounting groove 11 and fixed by thermally conductive double-sided adhesive or screws. On the one hand, the heat generated by the LED beads 42 can be quickly discharged through the air duct injection molded part 1. On the other hand, the light strip 4 can adapt to the warping deformation of the air duct injection molded part 1 during transportation or use.
[0039] In some embodiments of this utility model, the first limiting member 12 is disposed at the four corners of the mounting groove 11 to achieve multi-point limiting of the light guide plate.
[0040] In some embodiments of this utility model, the first limiting member 12 includes two members, and the two first limiting members 12 are symmetrically arranged at both ends of the light strip 4.
[0041] In some embodiments of this utility model, a dispensing area is formed between the mounting groove 11, the first limiting member 12 and the light guide layer 2. A sealant is provided in the dispensing area, which forms an elastic sealing strip after curing. This strip can absorb vibration and shock, and further prevent the light guide layer 2 from moving slightly.
[0042] In some embodiments of this utility model, the surface screen printing of the diffusion layer 3 can use ink as the coating material, generally printing two layers, namely black ink printing and silver ink printing, thereby forming an opaque border around the surface of the diffusion layer 31. The width of the border completely covers the light strip 4 and the first limiting member 12, which can play a role in shielding light, preventing light leakage in the frame structure, and improving the overall aesthetics of the surface light source.
[0043] In some embodiments of this invention, a reflective layer is further included, disposed between the light guide layer 2 and the air duct injection molded part 1, i.e., the reflective layer is disposed on the back side of the light guide layer 2. The reflective layer and the light guide layer 2 can be sequentially placed into the mounting groove 11 of the air duct injection molded part 1. Depending on the actual use, for example, when the air duct injection molded part 1 is coated with a reflective material, the independent reflective layer can also be omitted. The reflective layer can be used to reflect light from the light guide layer 2 and the LED light strip 4, returning it to the light guide layer 2 to increase brightness; it is often made of PET material (polyethylene terephthalate), a common sheet structure in surface light sources.
[0044] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0045] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.
Claims
1. A composite surface light source for a refrigerator air duct, characterized in that, include: An injection-molded air duct part is provided with a mounting groove, and a first limiting member is provided on at least one edge of the mounting groove; A light guide layer is disposed in the mounting groove, including a light-emitting surface and four sides, and a pair of opposite sides respectively abut against the first limiting member and the side wall of the mounting groove. A diffusion layer covers the light-emitting surface of the light guide layer; The light strip is disposed in the mounting groove and extends along the length of the side of the light guide layer.
2. The refrigerator air duct composite surface light source according to claim 1, characterized in that, The light strip is provided with a second limiting member; The two opposite sides of the light guide layer abut against the sidewalls of the second limiting member and the mounting groove, respectively.
3. The refrigerator air duct composite surface light source according to claim 2, characterized in that, The light strip includes a base plate and multiple LED beads; The base plate is connected to the air duct injection molded part; multiple LED beads are arranged on the base plate in the direction of the light guide layer, and the second limiting member is disposed between two adjacent LED beads.
4. The refrigerator air duct composite surface light source according to claim 3, characterized in that, The base plate is fitted to the bottom wall of the mounting groove.
5. The refrigerator air duct composite surface light source according to claim 1, characterized in that, The first limiting member is located at the four corners of the mounting groove.
6. The refrigerator air duct composite surface light source according to claim 1, characterized in that, The first limiting member includes at least two, and the at least two first limiting members are symmetrically arranged at both ends of the light strip.
7. The refrigerator air duct composite surface light source according to claim 1, characterized in that, A dispensing area is formed between the mounting groove, the first limiting member, and the light guide layer, and sealant is provided in the dispensing area.
8. The refrigerator air duct composite surface light source according to claim 1, characterized in that, The surface of the diffusion layer is screen-printed to form a border, which completely covers the light strip and the first limiting member.
9. The refrigerator air duct composite surface light source according to claim 1, characterized in that, It further includes a reflective layer disposed between the light guide layer and the air duct injection molded part.
10. The refrigerator air duct composite surface light source according to claim 1, characterized in that, Both the diffusion layer and the light guide layer are rectangular, and the mounting groove is a rectangular groove.