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Straight-down type LED panel lamp

A technology of LED panel lights and LED lamp beads, which is applied in lighting and heating equipment, semiconductor devices of light-emitting elements, refractors, etc., can solve the problems of high light source density, high manufacturing accuracy, and complicated procedures, and achieve low-cost lighting Density, improve uniformity, increase the effect of mixing light distance

Active Publication Date: 2017-07-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the current direct-type LED panel light source array mostly adopts a rectangular grid array, which leads to high power consumption due to the high density of the light source. develop
The existing ultra-thin direct-down flat panel lamp solution is usually completed by using an LED lamp with a free-form lens or a free-form base plate, which requires high manufacturing accuracy, complicated procedures, and high cost, and is rarely used in the actual production process.

Method used

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  • Straight-down type LED panel lamp
  • Straight-down type LED panel lamp
  • Straight-down type LED panel lamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This embodiment discloses a high-uniformity ultra-thin direct-lit LED flat panel lamp, such as figure 1 As shown, it includes housing 1, LED2, light mixing element 3, diffuse reflection bottom plate 4 and light output panel 5 and other structures, and the structure of a single light mixing element is as follows figure 2 As shown, it includes structures such as an upper bottom surface 6, a lower bottom surface 7, a reflective surface 8 and a transparent bracket 9. The LEDs are arranged in a hexagonal array on the diffuse reflection base plate, and a light mixing element is installed above each LED by a transparent bracket. The light mixing element is formed by injection molding process. After protecting the upper and lower light-transmitting surfaces, vacuum evaporation is used to aluminize the reflective surface, and finally the light-transmitting surface is polished to make it transparent. The size of the whole lamp is a cube of 271mm*191mm*17, the shape of the light...

Embodiment 2

[0036] The shape of the light mixing element used in this embodiment is a truncated cone, and other structures are the same as those in the embodiment. The size of the whole lamp is 271mm*191mm*17mm. The structure of the light mixing element is as follows Figure 4 As shown, it includes an upper bottom surface 10, a lower bottom surface 11, a reflective surface 12 and a transparent bracket 13 and other structures. The radius of the upper bottom surface of the frustum-shaped light mixing element is 6mm, the radius of the lower surface is 0.35mm, the thickness of the element is 2.5mm, the height between the element and the LED is 0.7mm, the distance between the LEDs is 35mm, and the internal height of the lamp is 15mm. Through the ray simulation software Tracepro simulation, the uniformity of the light emitting surface of the lamp is 95.30%, and the light efficiency is 92.97%.

Embodiment 3

[0038] The shape of the light mixing element used in this embodiment is hemispherical, and the hemispherical light mixing element is an intercepted part of a sphere. The light mixing element structure is as Figure 5 As shown, it includes structures such as an upper bottom surface 14, a lower bottom surface 15, a reflective surface 16 and a transparent bracket 17. The radius of the upper bottom surface is 4mm, the radius of the lower bottom surface is 0.6mm, the thickness of the component is 3.0mm, the height between the component and the LED is 0.7mm, the distance between the LEDs is 35mm, and the internal height of the lamp is 15mm. Through the optical simulation tracking software Tracepro simulation, the uniformity of the light emitting surface of the lamp is 97.47%, and the light efficiency is 92.97%.

[0039] The above three kinds of light mixing elements are all formed by injection molding combined with vacuum evaporation, and the upper and lower bottom surfaces are lig...

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Abstract

The invention discloses a straight-down type LED panel lamp. The straight-down type LED panel lamp comprises a shell, LED lamp beads, light mixing elements, a diffuse reflection base plate, a frame and a light emitting panel, wherein the LED lamp beads are arranged on the base plate, a light mixing element made of pmma is independently arranged above each LED lamp bead, and the diffuse reflection base plate is combined with the light emitting panel through the frame. According to the straight-down type LED panel lamp, light rays of the straight-down type LED panel lamp are continually reflected in the interior, with smaller thickness, of the lamp through the light reflecting surfaces of the light mixing elements and the diffuse reflection of a diffuse reflection back plate so as to achieve the purpose of increasing the mixing light distance, and therefore the uniformity of the lamp can be further improved on the premise of controlling the thickness of the lamp; and meanwhile, a hexagonal arrangement array of the LED lamp beads is adopted, and therefore the lamp has advantages that the light source density can be reduced so as to reduce the power consumption and the like.

Description

technical field [0001] The present invention relates to a LED panel light technology, in particular to a direct-down LED panel light. The direct-down LED panel light is an ultra-thin direct-down LED panel light with high uniformity. Thin direct type LED panel light. Background technique [0002] In the field of lighting, LED, as a new type of green lighting source, has a series of characteristics such as DC flicker-free, high efficiency and energy saving, low carbon, and small size, and can provide environmentally friendly, stable, and efficient lighting. Compared with traditional light sources, the light energy distribution (light type and luminous angle, etc.) of LED light sources can be controlled, and the most suitable lighting fixtures can be designed for different lighting occasions. Further, compared with traditional light sources, LED light sources have more Long service life, can achieve glare-free lighting, improve lighting quality, and effectively save energy. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21K9/20F21V19/00F21K9/69F21K9/68F21Y115/10
CPCF21V5/00F21V7/0066F21V19/001
Inventor 文尚胜庞培元陈心雅马丙戌陈浩伟梁依倩黄雅琪
Owner SOUTH CHINA UNIV OF TECH
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