Composite surface light source assembly

Abstract

The utility model belongs to the technical field of household appliances, and particularly discloses a composite area light source assembly which comprises an injection molding part, an installation opening is formed in the front side face of the injection molding part, a light guide plate is arranged in the installation opening, and a diffusion plate is arranged on the side face, away from the installation opening, of the light guide plate. A lamp panel is further arranged in the mounting opening and right faces the light guide plate. A gluing table communicating with the mounting opening is arranged on the front side face of the injection molding part, and sealant is arranged in the gluing table. According to the composite area light source assembly provided by the utility model, after gluing is carried out on the gluing table, the diffusion plate is placed on the injection molding part, pressing and pressure maintaining are carried out through the pressing equipment, and the limiting boss is designed to limit the fitting height of the diffusion plate and the injection molding part, so that glue overflow can be prevented, and the qualified rate of products can be effectively improved; in addition, the assembly process of the area light source can be simplified, the assembly efficiency is improved, and actual production is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of household appliance technology, and in particular relates to a composite surface light source component. Background Technology

[0002] The surface light source assembly is a key component of a surface light source, working together to achieve efficient and uniform light output. The main components of a surface light source assembly include: a light-emitting element, a light guide plate, and a reflective film. Specifically, the working principle of a surface light source is based on the principles of light propagation and reflection. When the light-emitting element emits light, this light enters the light guide plate and propagates within it. The special structure of the light guide plate ensures that the light is evenly distributed within the plate and emitted through its upper surface. Simultaneously, the reflective film reflects the backward-propagating light back forward, ensuring full utilization of the light.

[0003] In the assembly of the surface light source, the surface light source component is assembled with the injection-molded plastic. Since the surface light source component is a separate unit, it needs to be assembled individually. During its assembly, it requires treatments such as light transmission, reflection, and moisture protection before being reassembled with the injection-molded plastic. When assembling the diffuser plate onto the injection-molded part, an adhesive process is used to fix the diffuser plate to the injection-molded part. This has the following defects: during the pressure-holding process of the diffuser plate edge using a pressing device, the adhesive is prone to overflow due to pressure transmission, leading to uneven adhesive layer thickness at the component joint surface and adhesive overflow into other parts, resulting in a decrease in the product's fit qualification rate. Utility Model Content

[0004] The purpose of this invention is to provide a composite surface light source assembly that can solve the problem of adhesive overflow during the process of fixing the diffuser plate to the injection molded part in the prior art.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A composite surface light source assembly includes an injection molded part, a mounting opening is provided on the front side of the injection molded part, a light guide plate is provided in the mounting opening, and a diffuser plate is provided on the side of the light guide plate away from the mounting opening;

[0007] The mounting port is also provided with a lamp plate, which is directly opposite the light guide plate.

[0008] The front side of the injection molded part is provided with a glue applicator that communicates with the mounting port, and the glue applicator is provided with sealant.

[0009] The diffuser plate is fixed to the injection molded part with sealant.

[0010] The glue applicator is also equipped with several limiting protrusions.

[0011] Furthermore, a reflective film is provided on one side of the light guide plate near the mounting port.

[0012] Furthermore, the side of the lamp panel away from the light guide plate has a heat dissipation gap with the inner side of the mounting opening.

[0013] Furthermore, an adhesive inlet groove is provided on the inner wall of the mounting port near the lamp panel.

[0014] Furthermore, a heat-conducting layer is provided on the rear side of the injection molded part near the end of the lamp panel.

[0015] According to the composite surface light source assembly provided by this utility model, by setting a heat-conducting layer, the light panel can be better dissipated. While facilitating the heat dissipation of the light panel, it avoids the light panel from being too close to the plastic parts, which would cause local overheating and lead to deformation and other problems after long-term use.

[0016] Furthermore, the thermally conductive layer is made of aluminum foil.

[0017] Furthermore, a slot is provided on the front side of the injection molded part near the lamp panel, and a plugging component is provided in the slot;

[0018] The injection molded part has a guide groove on the rear side near the heat-conducting layer that communicates with the slot.

[0019] Furthermore, the lamp board is provided with a connection terminal, and one end of the connection terminal passing through the slot is located in the adhesive guide groove.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] This utility model provides a composite surface light source assembly. After applying glue on a glue applicator, a diffuser plate is placed on an injection molded part and then pressed and held under pressure by a pressing device. A limiting boss is designed to limit the contact height between the diffuser plate and the injection molded part, thereby preventing glue overflow and effectively improving the product qualification rate. In addition, it can simplify the assembly process of the surface light source, improve assembly efficiency, and facilitate actual production. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure provided by this utility model;

[0024] Figure 2 This is an exploded view of the structure provided by this utility model;

[0025] Figure 3 This is a structural schematic diagram of the injection molded part provided by this utility model;

[0026] Figure 4 This utility model provides Figure 3 Enlarged view of the structure at point A in the image;

[0027] Figure 5 This is a rear view of the injection molded part provided by this utility model;

[0028] Figure 6 This utility model provides Figure 5 Enlarged view of the structure at point C in the image;

[0029] Figure 7 This utility model provides Figure 3 Enlarged view of the structure at point B in the image;

[0030] Figure 8 This is a structural schematic diagram of the sealing component provided by this utility model;

[0031] Figure 9 This is a front view of the installation structure of the injection molded part and the lamp panel provided by this utility model;

[0032] Figure 10 This utility model provides Figure 9 Enlarged view of the structure at point D in the image;

[0033] Figure 11 This is a front view of the structure of the injection molded part provided by this utility model;

[0034] Figure 12 This utility model provides Figure 11 Enlarged view of the structure at point E in the image.

[0035] The reference numerals in the attached drawings are as follows: 1. Injection molded part; 2. Reflective film; 3. Light guide plate; 4. Diffuser plate; 5. Lamp plate; 11. Mounting port; 12. Heat-conducting layer; 13. Adhesive channel; 14. Slot; 15. Adhesive plug; 16. Adhesive guide channel; 17. Adhesive application table; 18. Sealant; 19. Limiting boss; 51. Heat dissipation gap; 52. Connecting terminal. Detailed Implementation

[0036] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0037] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] The surface light source assembly is a key component of a surface light source, working together to achieve efficient and uniform light output. The main components of a surface light source assembly include: a light-emitting element, a light guide plate, and a reflective film. Specifically, the working principle of a surface light source is based on the principles of light propagation and reflection. When the light-emitting element emits light, this light enters the light guide plate and propagates within it. The special structure of the light guide plate ensures that the light is evenly distributed within the plate and emitted through its upper surface. Simultaneously, the reflective film reflects the backward-propagating light back forward, ensuring full utilization of the light.

[0039] In the assembly of the surface light source, the surface light source component is assembled with the injection-molded plastic. Since the surface light source component is a separate unit, it needs to be assembled individually. During assembly, it requires treatments such as light transmission, reflection, and waterproofing, before being reassembled with the injection-molded plastic. This results in a complex assembly process, poor waterproof reliability, difficulties in positioning the light guide plate and lamp board, and is time-consuming and labor-intensive. Furthermore, after assembly, the lamp board is tightly attached to the injection-molded part, leading to poor heat dissipation and potential deformation over long-term use.

[0040] Furthermore, when assembling the diffuser plate onto the injection molded part, the adhesive process used to fix the diffuser plate to the injection molded part has the following defects: during the pressure holding process of applying pressure to the edge of the diffuser plate through the pressing equipment, the adhesive is prone to overflow due to the influence of pressure transmission, resulting in uneven adhesive layer thickness on the joint surface of the parts and overflow of adhesive to other parts, which leads to a decrease in the product fit qualification rate.

[0041] Based on this, the present invention provides a composite surface light source assembly. A heat dissipation gap exists between the lamp plate and the injection-molded part, and a heat-conducting layer is provided on the injection-molded part, thereby ensuring good heat dissipation of the lamp plate. The setting of the limiting boss facilitates the installation of the light guide plate and diffuser plate onto the injection-molded part. By limiting the contact height between the diffuser plate and the injection-molded part, glue overflow can be prevented, thereby effectively improving the product qualification rate and ensuring the fixed installation position of the light guide plate and diffuser plate, thus simplifying the assembly process of the surface light source and facilitating its assembly. Details are as follows:

[0042] like Figures 1 to 2As shown, a composite surface light source assembly includes an injection molded part 1. An installation port 11 is provided on the front side of the injection molded part 1. A light guide plate 3 is provided inside the installation port 11. A diffuser plate 4 is provided on the side of the light guide plate 3 away from the installation port 11.

[0043] The mounting port 11 is also equipped with a lamp plate 5, which is directly opposite the light guide plate 3.

[0044] A heat-conducting layer 12 is provided on the rear side of the injection molded part 1 near the lamp plate 5. The heat-conducting layer 12 can be provided on the rear side of the injection molded part 1 by means of bonding or integral molding.

[0045] Specifically, in the actual assembly process, the light guide plate 3 is installed in the mounting port 11, and the diffuser plate 4 is fixed to the injection molded part 1 by the adhesive layer, thereby completing the assembly of the surface light source.

[0046] like Figures 1 to 2 As shown, in some embodiments of this utility model, a reflective film 2 is also provided on the side of the light guide plate 3 near the mounting port 11;

[0047] The reflective film 2 is located on the back of the light guide plate 3, that is, the reflective film 2 is located on the side of the light guide plate 3 away from the diffuser plate 4, and is used to reflect the light propagating backward back to the front, thereby further improving the utilization rate of light and the lighting effect.

[0048] The reflective film 2 is made of a material with high reflectivity to ensure that as much light as possible can be used effectively.

[0049] like Figures 1 to 10 As shown, in some embodiments of this utility model, the side of the lamp plate 5 away from the light guide plate 3 has a heat dissipation gap 51 with the inner side of the mounting opening 11;

[0050] In the actual assembly process, after the lamp board 5 is installed into the mounting port 11, the side of the lamp board 5 away from the light guide plate 3 is at a certain distance from the inner wall of the mounting port 11 (i.e., forming a heat dissipation gap 51). This heat dissipation gap 51 can be used to reserve heat dissipation space for the lamp board 5 while ensuring the fixed installation of the lamp board 5, so as to avoid the lamp board 5 from being too close to the injection molded part 1 and causing the local temperature to be too high, thereby improving the heat dissipation effect of the lamp board 5 in actual use.

[0051] In addition, a heat-conducting layer 12 is provided on the rear side of the injection molded part 1 near the lamp board 5. The heat-conducting layer 12 can be provided on the rear side of the injection molded part 1 by means of bonding or integral molding. The heat-conducting layer 12 can be used for heat conduction, further improving the heat dissipation effect of the lamp board 5 in actual use. At the same time, due to the heat dissipation gap 51 and the heat-conducting layer 12, the heat of the lamp board 5 can be effectively conducted away, reducing the working temperature of the light source. This can reduce the risk of light source damage caused by high temperature, enhance the reliability and stability of the lamp board 5, and reduce its performance fluctuations caused by temperature changes.

[0052] like Figures 1 to 10 As shown, in some embodiments of this utility model, an adhesive groove 13 is provided on the inner side wall of the mounting port 11 near the lamp plate 5.

[0053] In this utility model, the lamp panel 5 is long and narrow, and an adhesive groove 13 is provided on the inner side wall of the mounting opening 11 for pre-applying adhesive individually or as a whole. The adhesive layer formed by the adhesive application is used to fix the lamp panel 5 onto the injection molded part 1, thereby ensuring that the position of the lamp panel is fixed. Specifically, there can be multiple adhesive grooves 13, that is, the number of adhesive grooves 13 is not less than one.

[0054] like Figures 1 to 10 As shown, in some embodiments of this utility model, the heat-conducting layer 12 is made of a heat-conducting material; it is used for heat conduction.

[0055] like Figures 1 to 10 As shown, in some embodiments of this utility model, the heat-conducting layer 12 can be made of aluminum foil.

[0056] like Figures 1 to 10 As shown, in some embodiments of this utility model, the lamp board 5 is provided with a connecting terminal 52, and one end of the connecting terminal 52 passing through the slot 14 is located in the adhesive guide groove 16.

[0057] The connecting terminal 52 is welded to the lamp board 5 as a whole, and the power supply is connected through the connecting terminal 52.

[0058] like Figures 1 to 10 As shown, in some embodiments of this utility model, a slot 14 is provided at one end of the front side of the injection molded part 1 near the lamp plate 5, and a plugging part 15 is provided in the slot 14. Specifically, the plugging part 15 is overlapped and assembled with the injection molded part 1, that is, the plugging part 15 is adapted to be assembled into the slot 14.

[0059] A guide groove 16 connected to the slot 14 is provided at one end of the rear side of the injection molded part 1 near the heat-conducting layer 12;

[0060] In the actual assembly process, since the lamp board 5 is provided with a connection terminal 52 by welding, that is, the connection terminal 52 is welded to the lamp board 5 as a whole, and the power supply is connected by the connection terminal 52. When the connection terminal 52 passes through the reserved space (i.e., the slot 14 and the guide groove 16) on the injection molded part 1, there will be a gap around the connection terminal 52. Since the inside of the surface light source needs to be sealed, in order to prevent moisture from entering the inside of the surface light source during use, the sealing around the connection terminal 52 is crucial.

[0061] After the lamp board 5 is placed into the mounting opening 11 and fixed, a sealing component 15 is provided on the side of the lamp board 5. The sealing component 15 is inserted into the slot 14 for fixation to prevent the sealing component 15 from shaking. The sealing component 15 is overlapped with the injection molded part 1 to prevent the glue liquid introduced through the glue guide groove 16 from overflowing everywhere.

[0062] In actual use, the plugging part 15 can be installed into the slot 14, and then glue can be injected to seal the area in the slot 14 that is not filled by the plugging part 15, thereby completing the front sealing of the connection terminal 52.

[0063] In actual use, since a glue guide groove 16 connected to the slot 14 is provided at one end of the rear side of the injection molded part 1 near the heat-conducting layer 12, it is convenient to apply glue here, thereby completing the rear sealing of the connection terminal 52. Since glue is applied to both sides of the connection terminal 52, the connection terminal 52 can be completely sealed, thus effectively preventing moisture from entering the surface light source during use.

[0064] like Figures 1 to 10 As shown, in some embodiments of this utility model, the front side of the injection molded part 1 is provided with a glue applicator 17 that communicates with the mounting port 11, and the glue applicator 17 is provided with sealant 18.

[0065] The diffuser plate 4 is fixed to the injection molded part 1 by sealant 18;

[0066] The glue application table 17 is also provided with several limiting protrusions 19, which are located at one end of the glue application table 17 near the mounting port 11.

[0067] Specifically, the glue application station 17 is located on the front side of the injection molded part 1, and the glue application station 17 is connected to the mounting port 11. Specifically, the glue application station 17 and the mounting port 11 form a U-shape.

[0068] A glue application station 17 is provided, and glue is applied on the glue application station 17 to form a sealant 18. The diffuser plate 4 is fixed to the injection molded part 1 by the sealant 18, thereby ensuring the reliability of the connection between the diffuser plate 4 and the injection molded part 1, and ensuring the sealing performance of the assembled surface light source.

[0069] Specifically, after applying glue on the glue application table 17, the diffuser plate 4 is placed on the injection molded part 1 and pressed and held under pressure by the pressing equipment. At the same time, in order to prevent the glue from overflowing at the light guide plate 3 under pressure, a limiting boss 19 is designed to limit the bonding height between the diffuser plate 4 and the injection molded part 1.

[0070] Specifically, the limiting boss 19 is integrally molded on the glue application table 17; the integral molding design simplifies the process flow.

[0071] like Figures 11 to 12As shown, in some embodiments of this utility model, the glue applicator 17 is provided with a plurality of limiting protrusions 19. The limiting protrusions 19 are disposed at one end of the glue applicator 17 near the mounting opening 11. Specifically, the limiting protrusions 19 are disposed on one side of the glue applicator 17 located inside the mounting opening 11. More specifically, the limiting protrusions 19 are fixedly installed on one side of the glue applicator 17 located inside the mounting opening 11.

[0072] With this configuration, the number of limiting protrusions 19 on the glue application table 17 can be adjusted according to actual needs.

[0073] This utility model provides a composite surface light source assembly. By optimizing the fixing and heat dissipation methods of the lamp board 5, the heat dissipation performance of the lamp board 5 is improved. By using a double-sided adhesive layer sealing design at the connection terminal 52 on the lamp board 5, the sealing performance of the surface light source is guaranteed. By using the design of the limiting boss 19 on the glue application table 17, the bonding height between the diffuser plate 4 and the injection molded part 1 is limited, thereby ensuring that the diffuser plate 4 and the injection molded part 1 are bonded and fixed by the sealant 18, while preventing the overflow of the adhesive during the bonding process between the diffuser plate 4 and the injection molded part 1.

[0074] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A composite surface light source assembly, characterized in that, The injection molded part (1) is provided with an installation port (11) on its front side. A light guide plate (3) is provided inside the installation port (11). A diffuser plate (4) is provided on the side of the light guide plate (3) away from the installation port (11). The mounting port (11) is also provided with a lamp plate (5), which is directly opposite the light guide plate (3); The injection molded part (1) has a glue application table (17) on its front side that communicates with the mounting port (11), and the glue application table (17) contains sealant (18); The diffuser plate (4) is fixed to the injection molded part (1) by sealant (18); The glue application table (17) is also provided with several limiting protrusions (19).

2. The composite surface light source assembly according to claim 1, characterized in that, The light guide plate (3) is also provided with a reflective film (2) on one side near the mounting port (11).

3. A composite surface light source assembly according to claim 1, characterized in that, The side of the lamp plate (5) away from the light guide plate (3) has a heat dissipation gap (51) with the inner side of the mounting port (11).

4. A composite surface light source assembly according to claim 1, characterized in that, An adhesive groove (13) is provided on the inner side wall of the mounting port (11) near the lamp plate (5).

5. A composite surface light source assembly according to claim 1, characterized in that, A heat-conducting layer (12) is provided on the rear side of the injection molded part (1) near the end of the lamp plate (5).

6. A composite surface light source assembly according to claim 5, characterized in that, The thermal conductive layer (12) is made of aluminum foil.

7. A composite surface light source assembly according to claim 5, characterized in that, The injection molded part (1) has a slot (14) on one end of its front side near the lamp plate (5), and a plugging part (15) is provided in the slot (14); The injection molded part (1) has a guide groove (16) connected to the slot (14) at one end of its rear side near the heat-conducting layer (12).

8. A composite surface light source assembly according to claim 7, characterized in that, The lamp board (5) is provided with a connection terminal (52), and one end of the connection terminal (52) passing through the slot (14) is located in the adhesive guide groove (16).

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