Refrigerator LED lamp based on medium filling technology and series connection mode

Abstract

The utility model discloses a refrigerator light-emitting diode (LED) lamp based on a medium filling technology and a parallel-series connection mode, and belongs to the technical field of LED lamps. Comprising a lamp panel, a plurality of lamp grooves are evenly distributed in the top of the lamp panel, LED lamp beads are detachably installed in each lamp groove, the LED lamp beads are connected in parallel to form multiple rows of parallel lamp bead sets, and then the multiple rows of parallel lamp bead sets are sequentially connected in series to form an LED lamp body. The LED lamp bead comprises a substrate, an LED chip and an optical lens, a support is arranged at the top of the substrate, the LED chip is packaged at the top of the support through a fluorescent powder layer, a light source cavity is formed between the optical lens and the fluorescent powder layer, and the light source cavity is filled with a filling medium. The LED lamp beads are arranged in a grid mode that the LED lamp beads are connected in parallel first and then connected in series, when the LED lamp beads are in open-circuit faults, work of other LED lamp beads cannot be affected, and the filling media effectively improve the luminous flux of light rays emitted by the LED chips, capable of penetrating through the fluorescent powder layer and the filling media and finally reaching the outside through the optical lens.

Description

Technical Field

[0001] The utility model relates to the technical field of LED lamps, and in particular to a refrigerator LED lamp based on a dielectric filling technology and a parallel-series mode. Background Art

[0002] A lighting lamp is installed in the refrigerator's refrigerator compartment, and the switch is adapted to the opening and closing of the refrigerator door. When the refrigerator compartment door is opened, the lighting lamp lights up synchronously, making it convenient for users to take out and put food or other refrigerated items at night or in a poorly lit environment. When the refrigerator compartment door is closed, the lighting lamp goes out.

[0003] The patent with announcement number CN202818714U discloses a refrigerator LED light circuit, including a step-down circuit, a rectifier circuit, and a light-emitting circuit. The step-down circuit is composed of a step-down capacitor, the rectifier circuit is composed of a bridge full-wave rectifier circuit, and the light-emitting circuit is composed of a plurality of LED lamp beads connected in series. The invention is characterized in that a resistor is connected in parallel at both ends of the step-down capacitor to form an RC resistor-capacitor circuit, and a voltage divider resistor is connected in series at the input end of the light-emitting circuit. The utility model stabilizes the voltage of the entire circuit by connecting a resistor in parallel at both ends of the step-down capacitor at the input end and a voltage divider resistor in series at the front end of the light-emitting circuit, thereby preventing high voltage and protecting the LED lamp. However, the light-emitting circuit of the above-mentioned refrigerator LED lamp is composed of 6 LED lamp beads connected in series. As long as one LED lamp bead fails, the entire LED lamp will not light up, and the stability of the LED lamp is poor.

[0004] In addition, if Figure 1 As shown, the light source cavity of the existing LED lamp bead is filled with air. Due to the large difference in refractive index between the air and the phosphor silica gel layer, light is easily totally reflected at the interface, resulting in a large Fresnel loss of light energy. Utility Model Content

[0005] The purpose of this utility model is to provide a refrigerator LED light based on dielectric filling technology and in parallel series, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted by this utility model is as follows:

[0006] A refrigerator LED light based on dielectric filling technology and parallel-series connection includes a light board with several light troughs evenly distributed on the top. An LED lamp bead is detachably installed in each of the light troughs. Several of the LED lamp beads are first connected in parallel to form multiple rows of parallel lamp bead groups, and the multiple rows of parallel lamp bead groups are then connected in series in sequence to form an LED lamp body.

[0007] As a further solution of the present invention: the LED lamp bead includes a substrate, an LED chip and an optical lens, a bracket is provided on the top of the substrate, the LED chip is encapsulated on the top of the bracket by a phosphor layer, a light source cavity is formed between the optical lens and the phosphor layer, and the light source cavity is filled with a filling medium.

[0008] As a further solution of the present invention: at least two protrusions are provided on the left side of the substrate, and two engaging blind holes are provided on the right side of the substrate.

[0009] As a further solution of the present invention: two limiting blind holes adapted to the protrusions are provided on the left side wall of the lamp trough, and a limiting mechanism adapted to the engaging blind holes is provided on the right side of the lamp trough.

[0010] As a further solution of the present invention: the limiting mechanism includes:

[0011] Two guide rods, the right ends of the two guide rods are respectively fixedly arranged in the channels of the right side wall of the lamp trough;

[0012] Two springs, the two springs are respectively sleeved on the two guide rods, and the right ends of the springs are fixed in the corresponding channels;

[0013] Two sliding sleeves, the two sliding sleeves are respectively slidably mounted on the two guide rods, and the right ends of the sliding sleeves are fixedly connected to the left ends of the corresponding springs;

[0014] Two limiting rods, the two limiting rods are movably sleeved on the guide rods, and the right ends of the limiting rods are fixed to the left ends of the corresponding sliding sleeves;

[0015] A shift rod is fixedly connected between the two sliding sleeves.

[0016] As a further solution of the present invention: the shift rod is located above the strip groove provided on the lamp panel.

[0017] The utility model has the following beneficial effects:

[0018] (1) The LED lamp beads of the present invention are first connected in parallel to form four rows of parallel lamp bead groups, and the four rows of parallel lamp bead groups are then connected in series to form an LED lamp body. The LED lamp beads are arranged in a grid format of first connecting in parallel and then in series. This circuit is relatively stable. The more parallel connections are made, the higher the stability of the circuit. The layout is relatively flexible, and the number of LED lamp beads can be reduced according to needs. When an LED lamp bead fails to open the circuit, it will not affect the operation of other LED lamp beads.

[0019] (2) The utility model fills the light source cavity formed between the optical lens and the phosphor layer with a filling medium. The filling medium has a refractive index similar to that of the phosphor layer, and the reflection of light at the interface is reduced, thereby reducing Fresnel loss. The filling medium effectively increases the luminous flux of light emitted from the LED chip that can pass through the phosphor layer, the filling medium, and finally reach the outside world through the optical lens;

[0020] (3) The LED lamp beads of the present invention can be detachably installed in the corresponding lamp slots through a limiting mechanism, which facilitates the loading, unloading and replacement of the LED lamp beads. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the structure of lamp beads in the prior art;

[0023] Figure 2 This is a top view schematic diagram of a refrigerator LED light structure based on dielectric filling technology and parallel-series connection in the utility model;

[0024] Figure 3 This is a schematic diagram of the circuit structure of a refrigerator LED light based on dielectric filling technology and parallel-series connection in the utility model;

[0025] Figure 4 This is a top view schematic diagram of the light panel structure of the utility model;

[0026] Figure 5 This is a schematic cross-sectional view of the LED lamp structure of the utility model;

[0027] Figure 6 This is a top view schematic diagram of the LED lamp bead structure of the utility model;

[0028] Figure 7 It is a schematic structural diagram of the limiting mechanism of the utility model.

[0029] In the figure: 1. Light board; 11. Light trough; 12. Limiting blind hole; 13. Guide rod; 14. Spring; 15. Sleeve; 16. Limiting rod; 17. Push rod; 18. Strip groove; 2. LED lamp beads; 21. Base plate; 211. Raised portion; 212. Engaging blind hole; 22. LED chip; 23. Optical lens; 24. Bracket; 25. Phosphor layer; 26. Filling medium; 3. Parallel lamp bead group; 4. LED lamp body. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, and a specific direction structure and operation. Therefore, they cannot be understood as a limitation on the present invention.

[0032] In addition, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0033] See also Figure 2 As shown, the embodiment of the present invention provides a refrigerator LED light based on dielectric filling technology and series connection, including a rectangular light board 1 and LED lamp beads 2. Figure 4 As shown, a plurality of light slots 11 are evenly distributed on the top of the rectangular light board 1. In this embodiment, four rows and four columns of light slots 11 are arranged on the top of the light board 1. Each row and each column includes four light slots 11. An LED lamp bead 2 is detachably installed in each light slot 11. Figure 3 As shown, the LED lamp beads 2 are first connected in parallel to form four rows of parallel lamp bead groups 3, and the four rows of parallel lamp bead groups 3 are then connected in series to form an LED lamp body 4.

[0034] The LEDs 2 are arranged in a grid pattern, first in parallel and then in series. This circuit is relatively stable, and the more parallel connections, the higher the stability. This flexible layout allows the number of LEDs 2 to be reduced as needed. If one LED 2 fails open-circuit, it will not affect the operation of other LEDs 2.

[0035] See also Figure 5As shown, the LED lamp bead 2 includes a substrate 21, an LED chip 22, and an optical lens 23. The LED lamp bead 2 is detachably mounted in the corresponding lamp trough 11 via the substrate 21, allowing the LED lamp bead 2 to be maintained and replaced individually. A bracket 24 is provided on top of the substrate 21, and the LED chip 22 is encapsulated on top of the bracket 24 by a phosphor layer 25. A light source cavity is formed between the optical lens 23 and the phosphor layer 25. The light source cavity is filled with a filling medium 26, and the filling medium 26 has a refractive index similar to that of the phosphor layer 25. The main function of the filling medium 26 is to reduce the refractive index difference between different transmission media (such as the phosphor layer 25 and the air in the light source cavity). Due to the large refractive index difference, light is easily totally reflected at the interface, resulting in light energy loss. The filling medium 26 reduces this difference by providing a medium with a refractive index similar to that of the phosphor layer 25. The filling medium 26 effectively increases the luminous flux of light emitted from the LED chip 22 that can pass through the phosphor layer 25, the filling medium 26, and ultimately reach the outside world through the optical lens 23.

[0036] See also Figure 6 As shown, at least two protrusions 211 are provided on the left side of the base plate 21, and two blind holes 212 are provided on the right side of the base plate 21. Figure 7 As shown, the left side wall of the lamp trough 11 has two position-limiting blind holes 12 that match the raised portions 211. A position-limiting mechanism that matches the engaging blind holes 212 is provided on the right side of the lamp trough 11. During assembly, the raised portions 211 are inserted into the corresponding position-limiting blind holes 12, and the position-limiting mechanism cooperates with the engaging blind holes 212, thereby removably assembling the LED lamp bead 2 into the corresponding lamp trough 11.

[0037] See also Figure 7 As shown, in one embodiment, the limiting mechanism includes a guide rod 13, a spring 14, a sleeve 15, a limiting rod 16, and a lever 17. The right ends of the two guide rods 13 are fixedly mounted in the channels on the right side wall of the lamp trough 11. The springs 14 are sleeved on both guide rods 13, with the right ends of the springs 14 fixed in the corresponding channels, and the front ends of the springs 14 can freely extend and retract. A sleeve 15 is slidably mounted on the middle section of each guide rod 13, and the right end of the sleeve 15 is fixedly connected to the left end of the corresponding spring 14. During the extension and retraction of the spring 14, the sleeve 15 slides left and right on the guide rod 13 following the spring 14. A limiting rod 16 is movably mounted on the front ends of both guide rods 13, and the right ends of the limiting rods 16 are fixed to the left ends of the corresponding sleeves 15, allowing the limiting rod 16 to move left and right following the sleeves 15. It should be noted that when the spring 14 is not subjected to any external force, the two limit rods 16 extend into the lamp groove 11, the shift rod 17 is fixedly connected between the two sliding sleeves 15, and the shift rod 17 is located above the strip groove 18 opened on the lamp board 1.

[0038] During assembly, first push the lever 17 to the right, the spring 14 is contracted, and the sliding sleeve 15 drives the limiting rod 16 to retract into the corresponding channel. At this time, place the substrate 21 of the LED lamp bead 2 into the lamp trough 11, and align the protrusion 211 at the left end of the substrate 21 with the corresponding limiting blind hole 12, and align the engaging blind hole 212 at the right end of the substrate 21 with the corresponding channel. Then, release the lever 17. Under the action of the rebound force of the spring 14, the spring 14 pushes the sliding sleeve 15 to slide to the left and reset, and the sliding sleeve 15 pushes the limiting rod 16 to insert into the corresponding engaging blind hole 212, thereby fixing the LED lamp bead 2 in the lamp trough 11 from the left and right ends of the substrate 21.

[0039] When removing the LED lamp bead 2, it is only necessary to push the lever 17 to the right to pull the limiting rod 16 out of the engaging blind hole 212. When the limiting rod 16 is retracted into the channel, the LED lamp bead 2 can be removed and replaced.

[0040] The above detailed description of the preferred embodiments of the present invention should not be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A refrigerator LED light based on dielectric filling technology and parallel-series connection, characterized by: The invention comprises a lamp board (1), wherein a plurality of lamp troughs (11) are evenly arranged on the top of the lamp board (1), wherein an LED lamp bead (2) is detachably installed in each of the lamp troughs (11), wherein the plurality of LED lamp beads (2) are first connected in parallel to form a plurality of rows of parallel lamp bead groups (3), and the plurality of rows of parallel lamp bead groups (3) are then sequentially connected in series to form an LED lamp body (4).

2. The refrigerator LED light based on dielectric filling technology and parallel-series connection according to claim 1, characterized in that: The LED lamp bead (2) comprises a substrate (21), an LED chip (22) and an optical lens (23); a bracket (24) is provided on the top of the substrate (21); the LED chip (22) is encapsulated on the top of the bracket (24) by a phosphor layer (25); a light source cavity is formed between the optical lens (23) and the phosphor layer (25); and a filling medium (26) is filled in the light source cavity.

3. The refrigerator LED light based on dielectric filling technology and parallel-series connection according to claim 2, characterized in that: At least two protrusions (211) are provided on the left side of the base plate (21), and two engaging blind holes (212) are provided on the right side of the base plate (21).

4. The refrigerator LED light based on dielectric filling technology and parallel-series connection according to claim 3 is characterized by: Two limiting blind holes (12) adapted to the protrusions (211) are provided on the left side wall of the lamp trough (11), and a limiting mechanism adapted to the engaging blind holes (212) is provided on the right side of the lamp trough (11).

5. The refrigerator LED light based on dielectric filling technology and parallel-series connection according to claim 4 is characterized in that: The limiting mechanism includes: Two guide rods (13), the right ends of the two guide rods (13) are respectively fixedly arranged in the channel of the right side wall of the lamp trough (11); Two springs (14), the two springs (14) are respectively sleeved on the two guide rods (13), and the right ends of the springs (14) are fixed in the corresponding channels; Two sliding sleeves (15), the two sliding sleeves (15) are respectively slidably mounted on the two guide rods (13), and the right ends of the sliding sleeves (15) are fixedly connected to the left ends of the corresponding springs (14); Two limiting rods (16), the two limiting rods (16) are movably sleeved on the guide rod (13), and the right ends of the limiting rods (16) are fixed on the left ends of the corresponding sliding sleeves (15); A shift rod (17) is fixedly connected between the two sliding sleeves (15).

6. The refrigerator LED light based on dielectric filling technology and parallel-series connection according to claim 5, characterized in that: The shifting rod (17) is located above the strip-shaped groove (18) provided on the lamp panel (1).

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