CN206001794U - A kind of refrigerator LED area light source - Google Patents

Abstract

The utility model discloses a kind of refrigerator LED area light source, including temp. controlling box and be arranged at the LED lamp panel on temp. controlling box and diffuser plate mask, LED lamp panel is provided with multiple LED lamp bead, LED lamp bead is covered with lens, diffuser plate mask and LED lamp panel be arranged in parallel, and diffuser plate mask is located at the side of the exiting surface of LED lamp bead of LED lamp panel.This utility model has advantages below compared to existing technology：The light source that its LED lamp bead sends, first passes through lens refraction and sends, then scatter through diffuser plate mask, distribute light over is full and uniform again, it is achieved thereby that the purpose of area source, uniformly, light is soft, solves the problems, such as LED point light source dazzle for luminosity.

Description

A refrigerator LED surface light source

technical field

The utility model relates to a refrigerator LED surface light source.

Background technique

At present, refrigerator lighting is mostly green, environmentally friendly, and energy-saving LED lighting, and there are two types of light sources: point light source and surface light source. With the improvement of people's living standards, the requirements for lighting sources are also gradually increasing. Surface light sources are more and more favored by consumers because of their soft light and uniform brightness. Most of the current surface light source schemes realize the conversion from point light source to surface light source by setting a light guide plate on the back of the refrigerator, which has high requirements on the structure, is expensive, complex to assemble, and has low portability.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a refrigerator LED surface light source.

The utility model is achieved through the following technical solutions:

A refrigerator LED surface light source, comprising a temperature control box and an LED lamp board and a diffusion plate mask arranged on the temperature control box, the LED lamp board is provided with a plurality of LED lamp beads, and the LED lamp beads are covered with lens, the diffusion plate mask is arranged parallel to the LED light board, and the diffusion plate mask is located on one side of the light emitting surface of the LED lamp beads of the LED light board.

The LED light board is also provided with a voltage dividing resistor, a connector and a PCB board.

The multiple LED lamp beads of the LED lamp board are evenly arranged in a row.

The lens is a PMMA lens.

The surface of the diffuser plate facing the LED light board is a frosted surface, and a leveling agent layer is provided on the outside of the frosted surface.

The distance between the diffusion plate mask and the LED lamp panel is 20-25 mm.

The LED lamp board is provided with three LED lamp beads evenly spaced.

Compared with the prior art, the utility model has the following advantages:

The utility model provides a refrigerator LED surface light source. The light source emitted by the LED lamp beads is refracted by the lens first, and then diffused by the diffusion plate mask to make the light distribution fully uniform, thereby realizing the purpose of the surface light source and emitting light. The brightness is uniform and the light is soft, which solves the glare problem of LED point light sources. At the same time, compared with the conventional light guide plate type surface light source structure, the utility model has simple structure, convenient assembly and low cost.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a top view of the LED lamp panel of the present invention.

Labels in the figure: 1. LED lamp board; 11. LED lamp bead; 12. lens; 13. voltage dividing resistor; 14. connector; 15. PCB board; 2. temperature control box; 3. diffusion plate mask.

detailed description

The following is a detailed description of the embodiments of the present utility model. This embodiment is implemented on the premise of the technical solution of the present utility model, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present utility model is not limited to the following the described embodiment.

Referring to Fig. 1 and Fig. 2, this embodiment discloses a refrigerator LED surface light source, including a temperature control box 2, an LED lamp panel 1 and a diffusion plate mask 3 arranged on the temperature control box 2, and the temperature control box 2 is used to support LED lamp panel 1 and diffuser panel mask 3 . The LED lamp board 1 is provided with a plurality of LED lamp beads 11 , and the plurality of LED lamp beads 11 are evenly arranged in a row on the LED lamp board 1 , for example, three LED lamp beads 11 can be arranged in a row evenly. The LED lamp board 1 is also provided with a voltage dividing resistor 13 , a connector 14 and a PCB board 15 . The LED lamp bead 11 is covered with a lens 12, and the diffuser plate mask 3 is arranged parallel to the LED lamp panel 1, and the diffuser plate mask 3 is located on one side of the light-emitting surface of the LED lamp bead 11 of the LED lamp panel 1, and the diffuser plate mask 3 and the LED lamp The distance between the boards 1 is 20-25mm, if the distance is too close, it will easily produce light spot and glare; The light board 1 is installed within a suitable distance to achieve the effect of surface light source with high brightness and good uniformity.

Among them, the LED lamp bead 11 can adopt a patch type LED light-emitting diode, the light-emitting color is white, the color temperature is 2700-6500K, the minimum color rendering index is 80, the typical value is 82, and the half-light intensity angle is 120°. The lens 12 is a PMMA lens with a circular light spot, its diameter is Φ13mm, the light transmittance is 92%, and the refractive index is 1.49. The lens 12 can change the direction of the light emitted by the LED lamp bead 11 light source through refraction, and increase the light emitting angle and uniformity of the light. Spend. The voltage dividing resistor 13 is a plurality of 300 ohm resistors, and provides a stable 3.3VDC working voltage to one LED lamp bead 11 according to each 4 resistors. The connector 14 is a side-mounted power supply terminal, which is connected to the wire harness of the LED light board 1 and serves as a 112VDC power supply source for the LED light board. The PCB board 15 is the base material of the LED lamp board 1 , includes wiring lines, and meets the flame retardant grade of UL 94V-0.

The side of the diffuser cover 3 facing the LED lamp panel 1 is a frosted surface, and a leveling agent layer is provided on the outside of the frosted surface. Due to the addition of a leveling agent layer on the outside of the frosted surface of the diffuser plate mask 3, it has optical characteristics such as high light transmittance and high diffusivity, and can fully scatter light to enhance uniformity and achieve good light transmittance. Under the premise, it has good light source dot matrix shielding. The diffuser mask 3 has a thickness of 1.5 mm, a light transmittance of 50% to 60%, and a haze of the frosted surface of 99.5±1%.

After the 12VDC power supply is supplied to the LED lamp panel 1 through the connector 14, through the voltage dividing function of the voltage dividing resistor 13, each LED lamp bead 11 respectively obtains a stable 3.3VDC voltage, lights up and emits light, and the light passes through the lens 12 and refracts out. , changing the direction of the original light to make the distribution surface uniform; at the same time, after the light passes through the lens 12, the emission angle of the light is increased, so that the irradiation surface is wider. When the light after passing through the lens 12 reaches the diffuser plate mask 3, it is scattered by the leveling agent layer on its frosted surface, so that the light distribution on the surface of the diffuser plate mask 3 is fully uniform, thereby realizing the purpose of the surface light source and giving people Surface light source effect with uniform brightness.

In the design of refrigerator lighting, according to the size of the lighting surface, the volume of refrigerator lighting and other factors, the required surface light source effect can be achieved by changing the number of LED lamp beads 11, lenses 12, and the size and shape of the diffuser cover 3. , to enhance the user experience.

The utility model has the advantages of simple structure, convenient assembly, low cost and strong portability, and can be popularized and applied in refrigerator lighting. The utility model not only solves the glare of the point light source, but also realizes the effect of the surface light source and enhances the selling point of the refrigerator.

The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model should be included in the utility model. within the scope of protection.

Claims (7)

1. A refrigerator LED surface light source, characterized in that: it comprises a temperature control box and an LED light board and a diffusion plate mask arranged on the temperature control box, and the LED light board is provided with a plurality of LED lamp beads, so The LED lamp bead is covered with a lens, the diffuser plate mask is arranged parallel to the LED lamp panel, and the diffuser plate mask is located on one side of the light emitting surface of the LED lamp bead of the LED lamp panel. 2. A refrigerator LED surface light source as claimed in claim 1, characterized in that: said LED light board is also provided with a voltage dividing resistor, a connector and a PCB board. 3. The LED surface light source of a refrigerator according to claim 1, wherein the plurality of LED lamp beads of the LED lamp board are evenly arranged in a row. 4. The LED surface light source for a refrigerator according to claim 1, wherein the lens is a PMMA lens. 5. A refrigerator LED surface light source as claimed in claim 1, characterized in that: the side of the diffuser panel facing the LED light board is a frosted surface, and a layer of leveling agent is provided on the outside of the frosted surface . 6 . The LED surface light source of a refrigerator according to claim 1 , wherein the distance between the diffusion plate mask and the LED light panel is 20-25 mm. 7 . The LED surface light source of a refrigerator according to claim 1 , wherein three LED lamp beads are evenly spaced on the LED lamp board.