Integral face light

Abstract

The utility model relates to refrigerator, refrigerator surface light source technical field, specifically disclose an integral type surface light source, including air duct injection molding spare, light bar, light guide plate and diffusion plate, and the light bar includes strip light board, the LED lamp pearl of strip light board front wall and the wiring harness connected in strip light board one end rear wall, and the air duct injection molding spare front wall top is equipped with the lamp groove for clamping strip light board along the transverse, and the lamp groove rear wall is equipped with the wire hole in the position corresponding to the wiring harness, and the strip light board bottom is equipped with a plurality of clamping slots along the transverse, and the lamp groove inner chamber rear wall bottom is equipped with the limiting protrusion matched with the clamping slot, and the top of light guide plate presses the limiting protrusion bottom surface, the position of the wire hole is equipped with silica gel cover with the wiring harness, and the wire hole is connected with the interference assembly mode of sleeveing. Make surface light source subassembly LED lamp pearl exempt from the collision damage, and make the wire hole place have better sealing waterproof effect.

Description

Technical Field

[0001] This utility model relates to the field of surface light source technology for refrigerators and freezers, specifically an integrated surface light source. Background Technology

[0002] Surface light sources used in refrigerators and freezers typically include a mounting bracket, a light guide plate, a diffuser plate, and LED strips. Traditionally, when assembling surface light sources, double-sided adhesive is used to bond the mounting bracket, light guide plate, and diffuser plate before the surface light source is assembled onto the air duct assembly. The drawbacks of this method are: 1) The double-sided adhesive bonding process is complex and requires significant manpower; 2) The surface light source needs to be manufactured separately and then assembled with the air duct assembly, leading to material waste and high labor costs; 3) Most steps rely on manual operation, making automated production difficult.

[0003] In view of the above-mentioned defects, in recent years, the industry has gradually adopted an integrated structure that combines the surface light source and the air duct. This involves bonding the structural layers of the surface light source sequentially to the injection-molded air duct component using adhesive layers. The injection-molded air duct component has slots for accommodating LED strips and exit holes for the LED strip wiring harnesses, corresponding to the positions of the light guide plate. However, in practical applications, the LED strips installed in the slots of the injection-molded air duct component often come into contact with the light guide plate, potentially damaging the LED chips. Utility Model Content

[0004] The purpose of this invention is to provide an integrated surface light source to solve the problem that LED beads in current surface light source assemblies are easily damaged by the light guide plate.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an integrated surface light source, comprising an air duct injection molded part, a light strip, a light guide plate, and a diffuser plate. The light strip includes a strip light plate, LED beads disposed on the front wall of the strip light plate, and a wire harness connected to the rear wall of one end of the strip light plate. The top of the front wall of the air duct injection molded part is provided with a light groove for mounting the strip light plate in the horizontal direction. The rear wall of the light groove is provided with a wire outlet hole corresponding to the position of the wire harness. The bottom of the strip light plate is provided with multiple slots in the horizontal direction. The bottom of the rear wall of the inner cavity of the light groove is provided with a limiting protrusion that matches the slot. The top of the light guide plate presses against the bottom surface of the limiting protrusion. The wire harness is fitted with a silicone sleeve corresponding to the position of the wire outlet hole. The silicone sleeve and the wire outlet hole are fitted together by an interference fit.

[0006] Preferably, the front wall of the air duct injection molded part has a rectangular groove located below the lamp slot, the outer edge of the rectangular groove has a side groove, a reflective sheet is fitted inside the rectangular groove, and the light guide plate is fitted inside the side groove. The reflective sheet enhances light utilization and improves brightness uniformity.

[0007] Preferably, the front wall of the light guide plate is provided with several recessed structures.

[0008] Preferably, the recessed structure of the front wall of the light guide plate is a spherical groove distributed in a rectangular array.

[0009] Preferably, the front wall of the air duct injection molded part is provided with a glue groove at the position outside the side groove, and the rear wall of the glue groove has a wavy cross-section.

[0010] Preferably, the rear wall of the lamp trough is provided with a square groove corresponding to the position of the wire harness, and the wire outlet is provided on the rear wall of the square groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The integrated surface light source of this utility model uses a limiting protrusion to limit the light guide plate, so as to avoid the light guide plate hitting the LED beads; in addition, the limiting protrusion can also play a role in positioning and installing the light strip. Attached Figure Description

[0012] Figure 1 This is an exploded structural diagram of the entire utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of the injection molded air duct part of this utility model; Figure 3 This utility model Figure 1 Enlarged structural diagram at point A; Figure 4 This utility model Figure 1 Enlarged structural diagram at point B; Figure 5 This utility model Figure 2 A magnified structural diagram at point C.

[0013] In the diagram: 1-Air duct injection molded part; 1.1-Rectangular groove; 1.2-Light trough; 1.3-Square groove; 1.4-Cable outlet; 1.5-Limiting protrusion; 1.6-Side groove; 1.7-Glue groove; 2-LED strip; 2.1-LED strip panel; 2.2-LED beads; 2.3-Wire harness; 2.4-Card slot; 2.5-Silicone sleeve; 3-Light guide plate; 4-Diffuser plate; 5-Reflective sheet. Detailed Implementation

[0014] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-5 This utility model provides a technical solution: an integrated surface light source. A lamp groove 1.2 is provided horizontally at the top of the front wall of the air duct injection molded part 1. A square groove 1.3 is provided near one end of the rear wall of the lamp groove 1.2. A wire outlet 1.4 is located on the rear wall of the square groove 1.3. Multiple limiting protrusions 1.5 are provided horizontally at the bottom of the rear wall of the inner cavity of the lamp groove 1.2. A rectangular groove 1.1 is provided on the front wall of the air duct injection molded part 1 below the lamp groove 1.2. A side groove 1.6 is provided on the outer edge of the rectangular groove 1.1. A glue groove 1.7 is provided on the front wall of the air duct injection molded part 1 outside the side groove 1.6. The rear wall cross-section of the glue groove 1.7 is wavy, and the wavy shape can have one or more troughs, increasing the area covered by the glue surface and thus improving the bonding effect.

[0016] The light strip 2 includes a strip light panel 2.1, LED beads 2.2 disposed on the front wall of the strip light panel 2.1, and a wire harness 2.3 connected to the rear wall of one end of the strip light panel 2.1. The LED beads 2.3 are evenly distributed laterally on the top of the front wall of the strip light panel 2.1. The lower part of the strip light panel 2.1 has slots 2.4 that correspond one-to-one with and match the limiting protrusions 1.5. A silicone sleeve 2.5 is fitted onto the wire harness 2.3. The silicone sleeve 2.5 and the wire outlet hole 1.4 are fitted together by an interference fit. That is, the compression effect of the wire outlet hole 1.4 and the silicone sleeve 2.5 structure improves the sealing effect, giving the wire outlet hole 1.4 a better sealing and waterproof effect.

[0017] When assembling the light strip 2 onto the injection-molded part 1 of the air duct, first pass the wire harness 2.3 through the outlet hole 1.4, and align the slot 2.4 with the limiting protrusion 1.5 one-to-one. Then, snap the strip light panel 2.1 into the light groove 1.2, and fit the silicone sleeve 2.5 into the outlet hole 1.4 with an interference fit, with the slot 2.4 engaging the corresponding limiting protrusion 1.5. The square groove 1.3 is used to accommodate the electrical connection point between the strip light panel 2.1 and the wire harness 2.3.

[0018] The reflector 5 is mounted in the rectangular groove 1.1 to enhance light utilization and improve brightness uniformity.

[0019] When installing the light guide plate 3, it is snapped into the side groove 1.6, with the top of the light guide plate 3 resting against the bottom surface of the limiting protrusion 1.5 to prevent the light guide plate 3 from impacting the LED beads 2.3. Additionally, the front wall of the light guide plate 3 is provided with several recessed structures. These recessed structures are spherical grooves distributed in a rectangular array to ensure uniform light dispersion.

[0020] Glue is injected into the glue tank 1.7, and then the outer edge of the rear wall of the diffuser plate 4 is attached to the corresponding position in the glue tank 1.7. A logo or other design is printed on the surface of the diffuser plate 4 using screen printing or UV printing.

[0021] It should be noted that in this article, relational terms such as first and second are only used to refer to... Distinguishing one entity or operation from another does not necessarily require or imply any such actual relationship or order between those entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated surface light source, comprising an air duct injection molded part (1), a light strip (2), a light guide plate (3), and a diffuser plate (4), wherein the light strip (2) comprises a strip light plate (2.1), LED beads (2.2) disposed on the front wall of the strip light plate (2.1), and a wire harness (2.3) connected to the rear wall of one end of the strip light plate (2.1), wherein the top of the front wall of the air duct injection molded part (1) is provided with a lamp groove (1.2) for mounting the strip light plate (2.1) in a transverse direction, and the rear wall of the lamp groove (1.2) is provided with a wire outlet hole (1.4) corresponding to the position of the wire harness (2.3), characterized in that: The bottom of the strip light panel (2.1) is provided with multiple slots (2.4) along the horizontal direction. The bottom of the inner wall of the light groove (1.2) is provided with a limiting protrusion (1.5) that matches the slot (2.4). The top of the light guide plate (3) is pressed against the bottom surface of the limiting protrusion (1.5).

2. The integrated surface light source according to claim 1, characterized in that: The wire harness (2.3) is fitted with a silicone sleeve (2.5) corresponding to the position of the wire outlet (1.4), and the silicone sleeve (2.5) is fitted with the wire outlet (1.4) by an interference fit.

3. The integrated surface light source according to claim 1, characterized in that: The front wall of the air duct injection molded part (1) is provided with a rectangular groove (1.1) located below the lamp groove (1.2). The outer edge of the rectangular groove (1.1) is provided with a side groove (1.6). A reflector (5) is installed in the rectangular groove (1.1), and the light guide plate (3) is installed in the side groove (1.6).

4. The integrated surface light source according to claim 1, characterized in that: The front wall of the light guide plate (3) is provided with several recessed structures.

5. The integrated surface light source according to claim 4, characterized in that: The recessed structure of the front wall of the light guide plate (3) is a spherical groove distributed in a rectangular array.

6. The integrated surface light source according to claim 3, characterized in that: The front wall of the air duct injection molded part (1) is provided with a glue groove (1.7) located outside the side groove (1.6), and the rear wall cross section of the glue groove (1.7) is wavy.

7. The integrated surface light source according to claim 1, characterized in that: The rear wall of the lamp trough (1.2) is provided with a square groove (1.3) corresponding to the position of the wire harness (2.3), and the wire outlet (1.4) is provided on the rear wall of the square groove (1.3).

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