A square led downlight

A technology of LED downlights and LED light sources, applied in the field of lighting, can solve problems such as low light uniformity, affecting the comfort of downlights, dark lines and black holes, etc., to improve light uniformity, improve environmental adaptability, and reduce light loss Effect

Active Publication Date: 2019-04-19
GUANGDONG PAK CORP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The light source component is made by SMD. The light is emitted by multiple LED light-emitting diodes. It is projected directly. The light is not optically processed by light guide components, resulting in low light uniformity, and even dark lines and black holes, which affect the tube. light comfort

Method used

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  • A square led downlight
  • A square led downlight
  • A square led downlight

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see figure 1 , which is an exploded view of the structure of the square LED downlight described in this embodiment.

[0042] A square LED downlight comprises a lamp body 1, an LED light source assembly 2, a diffusion mask 3, a light guide element 4 and a back cover 5 for sealing the backlight surface of the lamp body. Among them, the diffusion mask 3 and the light guide element 4 are arranged in the lamp body 1, and are arranged in sequence from the outside to the inside; the LED light source assembly 2 is fixed on the side wall of the lamp body 1 and vertically arranged between the diffuser mask 3 and the light guide element 4 . The diffuser cover 3 is used to close the light emitting surface of the lamp body 1 , thereby forming a seal on the light emitting surface and the backlight surface of the lamp body 1 together with the back cover 5 , and sealing the LED light source assembly 2 and the light guide element 4 in the lamp body 1 . The cross-section of the lamp bo...

Embodiment 2

[0048] The light-guiding microlens on the back side of the light-guiding element in the above-mentioned embodiment 1 is a Spline spline curve convex lens designed and determined according to the principle of marginal rays in non-imaging optics and Snell's law of refraction, and its shape is mainly composed of the following The steps are calculated to determine:

[0049] a) Assuming that a single microlens substrate P is a rectangle with a side length of a×b, and the outgoing light obtains a W×L rectangular light plate on the target surface Q, the lens is divided into rectangles by N warp lines and M latitude jump lines respectively, In the same way, the light spot on the target surface is also divided into rectangles;

[0050] b) According to the theory of edge optics, when the values ​​of N and M are large enough, the light intensity of each grid is uniform, and the light intensity of each grid can be obtained only by tracing the edge of the grid. Assuming that the incident ...

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Abstract

The invention discloses a square LED down lamp which comprises a lamp body, an LED light source assembly, a diffusion cover, a light guide element, and a rear cover used for sealing the backlight face of the lamp body. The diffusion cover and the light guide element are arranged sequentially in the lamp body in the front-back direction. The LED light source assembly is fixedly arranged on the side wall of the lamp body and located between the diffusion cover and the light guide element. Light of the LED light source assembly is emitted through the diffusion cover or enters the light guide element from the side face and is emitted through the diffusion cover after being reflected. The lamp body is of a square structure, so that the environmental suitability of the lamp is greatly improved; meanwhile, the structure is improved, the light emitting uniformity of the lamp is improved, and the light guide uniformity is higher and can reach 90% or even higher; the invention further discloses a micro lens arranged on the back side of a guide tube element. The utilization efficiency of light is greatly improved through the micro lens, and light loss is effectively reduced.

Description

technical field [0001] The invention relates to the lighting field, in particular to a microlens and a square LED downlight with the microlens. Background technique [0002] Downlight is a kind of lighting decoration lamp widely used in supermarkets, hotels, clothing, shoe and hat stores, leisure centers, shopping malls, hotels, homes and other consumer places. Its biggest feature is that it can maintain the overall shape and style of architectural decoration without The surrounding environment of the lamp is destroyed because of the installation of the lamp. The existing LED downlights are all made into a circle, embedded in the ceiling, and the light is directly projected downward, which belongs to direct light distribution, and the projected light spot is circular. However, if the surrounding environment of the lamp application is linear, the circular downlight and the projected circular spot will inevitably affect the harmony of the decoration style and the environment,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S8/00F21V5/04F21V7/22F21V8/00F21Y115/10
CPCF21S8/00F21V5/04F21V7/22
Inventor 林岩
Owner GUANGDONG PAK CORP CO LTD
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