Light guide plate for illumination and illuminating lamp

Abstract

A light guide plate for illumination and an illuminating lamp are provided. The light guide plate for illumination comprises emitting and inner surfaces opposite to each other, at least an incident surface connected to the emitting and inner surfaces, and a plurality of concaved microstructures distributed in the inner surface. The cross section of each of the concaved microstructures has a shape of a quadrangle with four curves. Each of the concaved microstructures has an opening disposed at the inner surface. Through the design of the structure of the four curves for each of the concaved structure, the innovative structure can achieve uniform light guiding so as to permit uniform illumination of the illuminating lamp.

Description

technical field [0001] The invention relates to a light guide plate and a lamp, in particular to a light guide plate for illumination with a plurality of concave microstructures and an illumination lamp including the light guide plate for illumination. Background technique [0002] Side-lit light-emitting diode (LED) light guide plates have developed into an important component of lighting fixtures. With the continuous promotion of lighting applications, the market's requirements for light-emitting diode light guide plates are becoming more and more stringent, especially in large and medium-sized lighting guides. The performance of the light panel (such as light uniformity, etc.) must meet market requirements. refer to figure 1 , figure 2 , showing some components of a known lighting fixture, mainly including a light guide plate 1 and a plurality of light emitting elements 2 respectively arranged on the left and right sides of the light guide plate 1 . The light guide pl...

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Problems solved by technology

[0004] In addition, there is a light-emitting diode (LED) light guide plate, which uses a transfer roller to form a hemispherical microstructure on the inner surface of the light guide plate. The distribution density design of the hemispherical microstructure is roughly the same as figure 1 , figure 2 The printed structure 14 is similar to the printed structure 14, which is also designed to achieve uniform light guide. However, the disadvantage of the hemispherical microstructure is that the transfer rate formed by the microstructure is not good, so that the front luminance of the light from the light guide plate is poor.

[0005] In order to solve the above-mentioned problems of the printed light guide plate or the light guide plate with hemispherical microstructures, the light guide effect and the uniformity of the light output are not good, and to solve the printed structure 14 or the hemispherical microstructure distribution density and structural size change design Complicated, poor transfer rate and other shortcomings, so it is urgent to find a solution

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