A composite surface light source for refrigerator air ducts

Abstract

This utility model relates to a composite surface light source for a refrigerator air duct, comprising: an air duct injection molded part, a light guide layer, a diffusion layer, a first light-emitting element, and a second light-emitting element. The air duct injection molded part has a first mounting groove, and a second mounting groove is formed on the bottom wall of the first mounting groove. The light guide layer is disposed within the first mounting groove. The diffusion layer covers the light-emitting surface of the light guide layer. The first light-emitting element is disposed within the first mounting groove along the length of the side of the light guide layer. The second light-emitting element is installed within the second mounting groove, facing the light guide layer so that the light emitted by the second light-emitting element passes through the diffusion layer and illuminates it. This utility model provides basic lighting functionality through the first light-emitting element, while the second light-emitting element specifically illuminates a corresponding area of ​​the diffusion layer, forming a dual-layer light source design. This provides a layered and diverse lighting effect, satisfying the market's demand for technologically advanced lighting in refrigeration equipment.

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] This design approach can provide basic lighting effects to some extent, but due to the inherent shape limitations of existing air duct back panels, a single LED light source is generally used, and the effect of warm or cool light can only be changed by adjusting the color temperature, which has obvious limitations in terms of visual appeal and user experience.

[0004] As consumers' aesthetic requirements for home appliances continue to rise, the market demand for refrigerators with more technologically advanced lighting is growing. When users want to achieve cooler lighting effects through surface light sources, or for the lighting to be linked with other smart functions of the refrigerator, the traditional air duct composite surface light source design can no longer meet the needs of users. Utility Model Content

[0005] The purpose of this utility model is to solve one of the above-mentioned technical problems by providing a composite surface light source for refrigerator air ducts. The first light-emitting element provides basic lighting function, while the second light-emitting element specifically illuminates the corresponding area of ​​the diffusion layer, forming a double-layer light source design. This provides a layered and diverse lighting effect, satisfying the market's pursuit of technological lighting in refrigeration equipment.

[0006] 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 first mounting groove, and a second mounting groove is formed on the bottom wall of the first mounting groove; A light guide layer is disposed within the first mounting slot; A diffusion layer covers the light-emitting surface of the light guide layer; The first light-emitting element is disposed in the first mounting groove along the length direction of the side of the light guide layer; The second light-emitting element is installed in the second mounting groove, and the second light-emitting element is positioned towards the light-guiding layer so that the light emitted by the second light-emitting element passes through the diffusion layer and illuminates the diffusion layer. In some embodiments of this utility model, the first light-emitting element includes a first base plate and a plurality of second lamp beads mounted on the first base plate; The first base plate is fixed in the first mounting groove; Multiple LED beads installed on the first base plate are arranged in the direction of the light guide plate on the first base plate.

[0007] In some embodiments of this utility model, the first base plate is fitted to the bottom wall of the first mounting groove.

[0008] In some embodiments of this utility model, the second light-emitting element includes a second base plate and a plurality of LED beads mounted on the second base plate; The second base plate is fixed in the second mounting slot; Multiple LED beads mounted on the second base plate are arranged in the direction of the light guide plate on the second base plate.

[0009] In some embodiments of this utility model, the second base plate is fitted to the bottom wall of the second mounting groove.

[0010] In some embodiments of this utility model, light guide dots are arranged at positions corresponding to the diffuser layer and the second light-emitting element, and the arrangement trajectory of the light guide dots corresponds to the arrangement trajectory of the LED beads in the second light-emitting element.

[0011] In some embodiments of this invention, a border is formed by screen printing on the surface of the diffusion layer, and the border completely covers the first light-emitting element.

[0012] 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; On the reflective layer, a through hole is provided at the position corresponding to the second mounting groove, and the shape and size of the through hole are adapted to the shape and size of the second mounting groove.

[0013] In some embodiments of this utility model, a wire harness is further included, which is connected to the first light-emitting element and the second light-emitting element respectively.

[0014] In some embodiments of this utility model, the diffusion layer and the light guide layer are both rectangular, and the first mounting groove and the second mounting groove are both rectangular grooves.

[0015] The beneficial effects of this utility model are as follows: 1. This utility model provides a design that provides basic lighting by setting a first light-emitting element, and at the same time, sets a second light-emitting element to specifically illuminate the corresponding area of ​​the diffusion layer, forming a double-layer light source design, which provides a layered and diverse lighting effect, and meets the market's pursuit of technological lighting in refrigeration equipment. 2. The first base plate of this utility model is fitted to the bottom wall of the first mounting groove, and the second base plate is fitted to the bottom wall of the second mounting groove. On the one hand, it can enable the heat generated by the light of the lamp to be quickly discharged through the air duct injection molded part. On the other hand, it enables the two light-emitting parts to adapt to the warping deformation of the air duct injection molded part during transportation or use, and avoid damage to the light-emitting parts. 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 1 This is an exploded structural diagram of a composite surface light source for a refrigerator air duct; Figure 2 This is a structural schematic diagram of the air duct injection molded part, the light guide layer, and the first light-emitting element; Figure 3 for Figure 2 A partial enlarged view of the structure of part A in the middle; Figure 4 This is a structural schematic diagram of the air duct injection molded part and the first light-emitting part; Figure 5 for Figure 4 A structural schematic diagram of a partially enlarged view of section B in the middle; The attached figures are labeled as follows: 1. Air duct injection molded part; 11. First mounting groove; 12. Second mounting groove; 2. Light guide layer; 3. Diffusion layer; 4. First light-emitting element; 41. First base plate; 42. First LED bead; 5. Second light-emitting element; 51. Second base plate; 52. Second LED bead; 6. Reflective layer; 61. Through hole. 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 5 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, a first light-emitting element 4, and a second light-emitting element 5.

[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 first mounting groove 11. The bottom wall of the first mounting groove 11 is further recessed inward to form a rectangular second mounting groove 12, which is used to accommodate the light-emitting component. It can be understood that the area of ​​the bottom wall of the second mounting groove 12 is smaller than the area of ​​the bottom wall of the first groove.

[0026] The light guide layer 2 is a rectangular plate structure made of PMMA or PC material. It is set in the first mounting groove 11 and has a light-emitting surface, a back surface opposite to the light-emitting surface, and four sides. The diffusion layer 3 is a rectangular plate 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.

[0027] The first light-emitting element 4 extends along the length of the light-incident side of the light guide layer 2 and is fixed in the first mounting groove 11, and is connected with a wire harness.

[0028] The second light-emitting element 5 is installed in the second mounting groove 12. The second light-emitting element 5 is positioned towards the light-guiding layer 2 so that the light emitted by the second light-emitting element 5 passes through the diffusion layer 3 to illuminate the diffusion layer 3, and works with the first light-emitting element 4 to provide a richer lighting effect for the composite surface light source.

[0029] The second light-emitting element 5 can be controlled by a preset program to create reflective, light-changing, flashing, or breathing light effects. The light emission color of the second light-emitting element 5 is ice blue or another light emission color different from that of the first light-emitting element 4. It should be noted that other light emission effects can also be achieved by modifying the preset program, and this utility model does not limit this.

[0030] In the above scheme, the light guide layer 2 allows light from the first light-emitting element 4 to propagate within the light guide layer 2 through total internal reflection, thereby uniformly distributing the light onto the light-emitting surface and providing basic lighting functionality. The addition of the second light-emitting element 5 specifically illuminates the corresponding area of ​​the diffusion layer 3, resulting in a dual-layer light source design that provides layered and diverse lighting effects, satisfying the market's demand for technologically advanced lighting in refrigeration equipment.

[0031] In some embodiments of this utility model, the first light-emitting element 4 includes a first base plate 41 and a plurality of first lamp beads 42 mounted on the first base plate 41.

[0032] The first base plate 41 is fixed in the first mounting groove 11.

[0033] Multiple first LED beads 42 mounted on the first base plate 41 are arranged in the direction of the light guide plate, so that the LED beads emit light towards the side of the light guide layer 2.

[0034] In some embodiments of this utility model, the first base plate 41 is attached to the bottom wall of the first mounting groove 11 and is fixedly connected to the bottom wall of the first mounting groove 11 by thermally conductive double-sided adhesive or screws. On the one hand, the heat generated by the LED light bead can be quickly discharged through the air duct injection molded part 1. On the other hand, the first light-emitting part 4 can adapt to the warping deformation of the air duct injection molded part 1 during transportation or use.

[0035] In some embodiments of this utility model, the second light-emitting element 5 includes a second base plate 51 and a plurality of second lamp beads 52 mounted on the second base plate 51.

[0036] The second base plate 51 is fixed inside the second mounting groove 12, and its shape and size are adapted to the shape and size of the second mounting groove 12.

[0037] Multiple second LED beads 52 installed on the second base plate 51 are arranged on the second base plate 51 along a predetermined trajectory, facing the light guide plate.

[0038] In some embodiments of this utility model, the first lamp bead 42 and the second lamp bead 52 are both LED lamp beads.

[0039] In some embodiments of this utility model, the second base plate 51 is attached to the bottom wall of the second mounting groove 12 and is fixedly connected to the bottom wall of the second mounting groove 12 by thermally conductive double-sided adhesive or screws. On the one hand, the heat generated by the LED light bead can be quickly discharged through the air duct injection molded part 1. On the other hand, the second light-emitting part 5 can adapt to the warping deformation of the air duct injection molded part 1 during transportation or use.

[0040] In some embodiments of this invention, light-guiding dots are arranged at positions corresponding to the diffuser layer 3 and the second light-emitting element 5, and the arrangement trajectory of the light-guiding dots corresponds to the arrangement trajectory of the LED beads in the second light-emitting element 5. The shape of the light-guiding dots is one or more combinations of rhombuses, regular pentagons, equilateral triangles, circles, regular hexagons, ellipses, and regular octagons. The light emitted by the second light-emitting element 5 with effects such as changing brightness, flashing, and breathing is displayed through the pattern of the light-guiding dots.

[0041] 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 3. The width of the border completely covers the first light-emitting element 4, which can play a role in shielding light and improving the overall aesthetics of the surface light source.

[0042] In some embodiments of this utility model, a reflective layer 6 is further included. The reflective layer 6 is disposed between the light guide layer 2 and the air duct injection molded part 1, that is, the reflective layer 6 is placed on the back of the light guide layer 2, and the reflective layer 6 and the light guide layer 2 can be sequentially placed into the mounting groove of the air duct injection molded part 1.

[0043] On the reflective layer 6, a through hole 61 is provided at a position corresponding to the second mounting groove 11. The shape and size of the through hole 61 are adapted to the shape and size of the second mounting groove 11.

[0044] Depending on the actual application, for example, when the injection-molded part 1 of the air duct is coated with a reflective material, the independent reflective layer 6 can also be omitted. The reflective layer 6 can be used to reflect the light from the light guide layer 2 and the first light emitter 4, so that it returns to the light guide layer 2 to increase the brightness; it is usually made of PET material (polyethylene terephthalate), which is a common sheet structure in surface light sources.

[0045] 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.

[0046] 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 refrigerator air duct composite surface light source, characterized by, include: The air duct injection molded part is provided with a first mounting groove, and a second mounting groove is formed on the bottom wall of the first mounting groove; A light guide layer is disposed within the mounting groove; A diffusion layer covers the light-emitting surface of the light guide layer; The first light-emitting element is disposed in the first mounting groove along the length direction of the side of the light guide layer; A second light-emitting element is installed in the second mounting groove, and the second light-emitting element is positioned facing the light guide layer so that the light emitted by the second light-emitting element passes through the diffusion layer and illuminates the diffusion layer.

2. The refrigerator air duct composite surface light source according to claim 1, characterized by, The first light-emitting element includes a first base plate and a plurality of LED beads mounted on the first base plate; The first base plate is fixed in the first mounting groove; Multiple LED beads mounted on the first base plate are arranged on the first base plate in the direction of the light guide layer.

3. The refrigerator air duct composite surface light source according to claim 2, characterized by, The first base plate is in contact with the bottom wall of the first mounting groove.

4. The refrigerator air duct composite surface light source according to claim 1, characterized by, The second light-emitting element includes a second base plate and a plurality of first LED beads mounted on the second base plate; The second base plate is fixed in the second mounting groove; Multiple first LED beads mounted on the second base plate are arranged on the second base plate in the direction of the light guide layer.

5. The refrigerator air duct composite surface light source according to claim 4, characterized by, The second base plate is fitted against the bottom wall of the second mounting groove.

6. The refrigerator air duct composite surface light source according to claim 4 or 5, characterized by, The diffusion layer is provided with light guide dots arranged at positions corresponding to the second light-emitting element, and the arrangement trajectory of the light guide dots corresponds to the arrangement trajectory of the second LED beads in the second light-emitting element.

7. The refrigerator air duct composite surface light source according to claim 1, wherein, The surface of the diffusion layer is screen-printed to form a border, which completely covers the first light-emitting element.

8. The refrigerator air duct composite surface light source according to claim 1, characterized by, The system further includes a reflective layer disposed between the light guide layer and the air duct injection molded part; A through hole is provided on the reflective layer at the position corresponding to the second mounting groove.

9. The refrigerator air duct composite surface light source according to claim 1, wherein, It further includes a wiring harness, which is connected to the first light-emitting element and the second light-emitting element respectively.

10. The refrigerator air duct composite surface light source according to claim 1, characterized by, Both the diffusion layer and the light guide layer are rectangular, and both the first mounting slot and the second mounting slot are rectangular slots.

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