High-definition LED lamp

Abstract

The utility model relates to the technical field of LED lighting, and particularly discloses a high-definition LED lamp which comprises a light-emitting module, a heat dissipation frame, a soft light diffuse reflection film, a vertical light guide plate and a diamond miniature carving diffusion plate, the light-emitting module comprises a circuit board and at least one LED lamp bead welded on the circuit board, and the heat dissipation frame is a metal frame with a U-shaped section. The two light-emitting modules are fixed to the inner sides of the two side walls of the heat dissipation frame respectively, the soft light diffuse reflection film is fixed to the inner side of the bottom wall of the heat dissipation frame, the vertical light guide plate and the diamond miniature carving diffusion plate are sequentially and fixedly arranged on the soft light diffuse reflection film, and LED lamp beads of the two light-emitting modules directly face the two side faces of the vertical light guide plate respectively. The structure is compact, and optical loss can be reduced. In addition, the soft light diffuse reflection film is adopted as a reflecting surface and used for diffuse reflection of light rays, the light rays can be softer, the light emitting efficiency can be improved, and then the definition of lamplight is higher.

Description

Technical Field

[0001] The utility model relates to the field of LED lighting, in particular to a high-definition LED lamp. Background Art

[0002] With the gradual development of LED lighting technology, people's requirements for LED lighting fixtures are getting higher and higher. In the LED fixtures currently on the market, a cavity is generally set between the reflective surface and the light guide plate, and the LED lamp beads are set between the reflective surface and the light guide plate. This design will increase light loss; in addition, in order to improve the reflection efficiency, the reflective surface is usually a smooth mirror surface, but this will cause the emitted light to be not soft enough and affect the light output efficiency, resulting in insufficient clarity of the light, making it difficult to meet the market demand for high-quality lighting. Utility Model Content

[0003] In order to overcome the defects in the prior art, the purpose of the utility model is to provide a high-definition LED lamp.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A high-definition LED lamp comprises a light-emitting module, a heat dissipation frame, a soft light diffuse reflection film, a vertical light guide plate and a diamond micro-carved diffusion plate, wherein the light-emitting module comprises a circuit board and at least one LED lamp bead welded thereon, the heat dissipation frame is a metal frame with a U-shaped cross-section, two groups of light-emitting modules are respectively fixed to the inner sides of two side walls of the heat dissipation frame, the soft light diffuse reflection film is fixed to the inner side of the bottom wall of the heat dissipation frame, the vertical light guide plate and the diamond micro-carved diffusion plate are fixedly arranged on the soft light diffuse reflection film in sequence, and the LED lamp beads of the two groups of light-emitting modules are respectively opposite to the two side surfaces of the vertical light guide plate.

[0006] As a preferred technical solution, the LED lamp bead includes an LED bracket cavity, in which at least three gallium nitride chips with wavelength ranges of 410-430nm, 450-460nm and 475-485nm are arranged, and the gallium nitride chip is coated with a fluorescent material, and the fluorescent material includes aluminate, silicate, nitride and fluoronitride, so that the color rendering index of the LED lamp bead Ra ≥ 97, Rg ≧ 97, Rf ≧ 97, R1-R99 > 90, and the wavelength coverage range is 400-800nm, wherein the light radiation flux in the wavelength range of 400-490nm accounts for 5%-8%, the light radiation flux in the wavelength range of 490-530nm accounts for 40-55%, the light radiation flux in the wavelength range of 530-650nm accounts for 20%-30%, and the light radiation flux in the wavelength range of 650-800nm ​​accounts for 5%-7%.

[0007] As a preferred technical solution, the soft light diffuse reflection film includes a reflection film body and a diffuse reflection layer sprayed on the surface of the reflection film body, and the diffuse reflection layer includes an adhesive and micron-grade barium sulfate powder mixed therein.

[0008] As a preferred technical solution, the vertical light guide plate is formed by hot pressing PMMA and titanium dioxide crystal materials.

[0009] As a preferred technical solution, the diamond micro-carved diffuser plate includes a diffuser plate body and a plurality of six-sided trapezoidal cones arranged on the upper surface of the diffuser plate body, and the six-sided trapezoidal cones are directly cut and formed by a cutter disc module on the upper surface of the diffuser plate body.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. By arranging light-emitting modules relatively on the inner sides of the two side walls of the heat dissipation frame, a soft light diffuse reflection film, a vertical light guide plate and a diamond micro-carved diffusion plate are arranged on the inner side of the bottom wall from bottom to top, and the LED lamp beads of the two groups of light-emitting modules are respectively facing the two sides of the vertical light guide plate. The structure is compact, and the cavity for installing LEDs between the reflecting surface and the light guide plate in the existing design is avoided, thereby reducing light loss; in addition, a soft light diffuse reflection film is used as a reflecting surface for diffusely reflecting light, which can make the light softer and improve the light output efficiency, thereby making the light clearer.

[0012] 2. Through the spectral energy fitting technology, the spectral form of high-definition light is simulated, and the weighted function is used to calculate the proportion of radiation flux in the corresponding band of the spectrum under different color temperatures. The specific method is that the LED lamp beads use gallium nitride chips with three or more wavelengths of 410-430nm, 450-460nm, and 475-485nm, fixed in the same LED bracket cavity, and matched with fluorescent materials made of aluminate, silicate, nitride, and fluorine nitride, so that the color rendering index of the LED lamp beads is The data Ra≥97, Rg≧97, Rf≧97, R1-R99>90, and the wavelength coverage range is 400-800nm, of which the light radiation flux in the wavelength range of 400-490nm accounts for 5%-8%, the light radiation flux in the wavelength range of 490-530nm accounts for 40-55%, the light radiation flux in the wavelength range of 530-650nm accounts for 20%-30%, and the light radiation flux in the wavelength range of 650-800nm ​​accounts for 5%-7%.

[0013] 3. The soft light diffuse reflection film is made of micron-grade barium sulfate powder mixed with adhesive sprayed to form a diffuse reflection layer on the film body. The reflectivity reaches more than 96%. The light output is mainly diffuse reflection, and the light is softer.

[0014] 4. The vertical light guide plate is made of PMMA and titanium dioxide crystal materials by hot pressing, and has outstanding vertical light guiding performance. Compared with the conventional PMMA laser dot light guide plate, the light guiding efficiency is increased by more than 10%, the uniformity is increased by more than 15%, and the spectral energy change is less than 1%.

[0015] 5. The diamond micro-carved diffuser plate is used to diffuse light and distribute it evenly in space. The diamond micro-carved diffuser plate in this patent is different from the ordinary hot-pressed rhombus and micro-rhombus plates. It has a transmittance of 96% and a uniformity of 20%. It also has the advantages of reshaping the light path, precise angle control, and no ghosting. The diamond micro-carved diffuser plate is cut by a knife disc module with an accuracy of um level. Through in-depth research on optics, it is found that light is prone to spectral distortion due to its discrete characteristics during the diffusion process, resulting in a decrease in the sharpness of the illuminated object, affecting the clarity of the light. After continuous experiments, it was found that the six-sided trapezoidal cone has good spectral restoration performance. The discrete light generated can restore more than 95% of the spectral form through the six-sided trapezoidal cone, greatly improving the clarity of the light.

[0016] 6. The above technologies are combined to ultimately enable this patent to provide a high-definition lamp with an MTF (modulation transfer function) greater than 90%.

[0017] The concept, specific structure and effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, features and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of a high-definition LED lamp in an embodiment;

[0019] Figure 2 Schematic diagram of the cross-sectional structure of the high-definition LED lamp in the embodiment.

[0020] Among them: a light emitting module 1, a circuit board 11, LED lamp beads 12, a heat dissipation frame 2, a soft light diffuse reflection film 3, a vertical light guide plate 4, a diamond micro-carved diffusion plate 5, and a six-sided trapezoidal cone 51. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. It should be noted that when an element is referred to as "connected" or "connected" to another element, it can be directly connected to another element or connected to another element through other intermediate elements. If there is no special explanation, it can be a non-detachable connection or a detachable connection. Similar expressions are only for illustrative purposes and are not used to limit the utility model.

[0022] like Figure 1-2 As shown, the present embodiment provides a high-definition LED lamp, including a light-emitting module 1, a heat dissipation frame 2, a soft light diffuse reflection film 3, a vertical light guide plate 4 and a diamond micro-carved diffusion plate 5, the light-emitting module 1 includes a circuit board 11 and a plurality of LED lamp beads 12 welded thereon, the heat dissipation frame 2 is a metal frame with a U-shaped cross-section, two groups of light-emitting modules 1 are respectively fixed to the inner sides of the two side walls of the heat dissipation frame 2, the soft light diffuse reflection film 3 is fixed to the inner side of the bottom wall of the heat dissipation frame 2, the vertical light guide plate 4 and the diamond micro-carved diffusion plate 5 are fixedly arranged on the soft light diffuse reflection film 3 in sequence, and the LED lamp beads 12 of the two groups of light-emitting modules 1 are respectively facing the two side surfaces of the vertical light guide plate 4.

[0023] The high-definition LED lamp provided in the present embodiment has light-emitting modules 1 arranged opposite to each other on the inner sides of the two side walls of the heat dissipation frame 2, and a soft light diffuse reflection film 3, a vertical light guide plate 4 and a diamond micro-carved diffusion plate 5 are arranged on the inner side of the bottom wall in sequence from bottom to top, and the LED lamp beads 12 of the two groups of light-emitting modules 1 are respectively opposite to the two side surfaces of the vertical light guide plate 4, and the structure is compact, avoiding the need for setting a cavity for installing the LED between the reflecting surface and the light guide plate in the existing design, thereby reducing light loss; in addition, the soft light diffuse reflection film 3 is used as the reflecting surface for diffusely reflecting light, which can make the light softer and improve the light output efficiency, thereby making the light clearer.

[0024] As a preferred solution of this embodiment, the LED lamp bead 12 simulates the spectral form of high-definition light through spectral energy fitting technology, and uses a weighted function to calculate the radiation flux proportion of the corresponding band of the spectrum under different color temperatures. Specifically, the LED lamp bead 12 uses gallium nitride chips with three or more wavelengths of 410-430nm, 450-460nm, and 475-485nm, which are fixed in the same LED bracket cavity, and are matched with fluorescent materials made of aluminate, silicate, nitride, and fluoronitride. The color rendering index of the LED lamp bead 12 is Ra≥97, Rg≧97, Rf≧97, R1-R99>90, and the wavelength coverage range is 400-800nm, of which the light radiation flux in the wavelength range of 400-490nm accounts for 5%-8%, the light radiation flux in the wavelength range of 490-530nm accounts for 40-55%, the light radiation flux in the wavelength range of 530-650nm accounts for 20%-30%, and the light radiation flux in the wavelength range of 650-800nm ​​accounts for 5%-7%.

[0025] As a preferred solution of this embodiment, the soft light diffuse reflection film 3 includes a reflection film body, a diffuse reflection layer sprayed on the surface of the reflection film body, and the diffuse reflection layer includes an adhesive and micron-grade barium sulfate powder mixed therein. The soft light diffuse reflection film 3 is sprayed with micron-grade barium sulfate powder mixed with an adhesive to form a diffuse reflection layer on the film body, with a reflectivity of more than 96%, and the light output is mainly diffuse reflection, which can make the light softer.

[0026] As a preferred solution of this embodiment, the vertical light guide plate 4 is made of PMMA and titanium dioxide crystal materials by hot pressing, and has outstanding vertical light guiding performance. Compared with the conventional PMMA laser dot light guide plate, the light guiding efficiency is increased by more than 10%, the uniformity is increased by more than 15%, and the spectral energy change is less than 1%.

[0027] As a preferred solution of this embodiment, the diamond micro-carved diffuser 5 includes a diffuser body and a plurality of six-sided trapezoidal cones 51 arranged on the upper surface of the diffuser body, and the six-sided trapezoidal cones 51 are directly cut by a knife disc module on the upper surface of the diffuser body. The diamond micro-carved diffuser 5 is used to diffuse the light and evenly distribute the light in the space. The diamond micro-carved diffuser 5 in this patent is different from the ordinary hot-pressed rhombus and micro-rhombus plates. The transmittance reaches 96%, the uniformity is improved by 20%, and it has the advantages of reshaping the light path, precise angle control, and no ghosting. The diamond micro-carved diffuser 5 is cut by a knife disc module with an accuracy of um level. Through in-depth research on optics, it is found that the light is prone to spectral distortion due to its discrete characteristics during the diffusion process, resulting in a decrease in the sharpness of the illuminated object, affecting the clarity of the light. After continuous experiments, it is found that the six-sided trapezoidal cone has good spectral restoration performance. The discrete light generated can restore more than 95% of the spectral form through the six-sided trapezoidal cone, greatly improving the clarity of the light.

[0028] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.

Claims

1. A high-definition LED lamp, characterized in that: It includes a light-emitting module, a heat dissipation frame, a soft light diffuse reflection film, a vertical light guide plate and a diamond micro-carved diffusion plate. The light-emitting module includes a circuit board and at least one LED lamp bead welded thereon. The heat dissipation frame is a metal frame with a U-shaped cross-section. Two groups of light-emitting modules are respectively fixed on the inner sides of the two side walls of the heat dissipation frame, the soft light diffuse reflection film is fixed on the inner side of the bottom wall of the heat dissipation frame, the vertical light guide plate and the diamond micro-carved diffusion plate are fixed on the soft light diffuse reflection film in sequence, and the LED lamp beads of the two groups of light-emitting modules are respectively facing the two side surfaces of the vertical light guide plate.

2. A high definition LED lamp according to claim 1, characterized in that: The LED lamp bead includes an LED bracket cavity, in which at least three gallium nitride chips with wavelength ranges of 410-430nm, 450-460nm and 475-485nm are arranged, and the gallium nitride chips are coated with fluorescent materials. The color rendering index of the LED lamp bead is Ra≥97, Rg≧97, Rf≧97, R1-R99>90, and the wavelength coverage range is 400-800nm, wherein the light radiation flux in the wavelength range of 400-490nm accounts for 5%-8%, the light radiation flux in the wavelength range of 490-530nm accounts for 40-55%, the light radiation flux in the wavelength range of 530-650nm accounts for 20%-30%, and the light radiation flux in the wavelength range of 650-800nm ​​accounts for 5%-7%.

3. A high definition LED lamp according to claim 1, characterized in that: The soft light diffuse reflection film comprises a reflection film body and a diffuse reflection layer sprayed on the surface of the reflection film body.

4. The high-definition LED lamp according to claim 1, characterized in that: The vertical light guide plate is formed by hot pressing PMMA and titanium dioxide crystal materials.

5. The high definition LED lamp according to claim 1, characterized in that: The diamond micro-carved diffusion plate comprises a diffusion plate body and a plurality of six-sided trapezoidal cones arranged on the upper surface of the diffusion plate body. The six-sided trapezoidal cones are formed by cutting directly on the upper surface of the diffusion plate body by a cutter head module.

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