Annular light emitting device

Abstract

The invention discloses an annular light emitting device, which comprises a light guide unit and a light emitting unit, wherein the light guide unit is provided with an annular light guide body and multiple arc-shaped light guide bodies which are separated from one other and are connected to the annular light guide body; each arc-shaped light guide body is provided with a light incidence surface; the light emitting unit comprises multiple light emitting elements which are separated from one other and are surrounded by the annular light guide body; each light emitting element faces the corresponding light incidence surface; the annular light guide body extends along a first circular trajectory; the light emitting elements are arrayed along a second circular trajectory; two opposite tail ends of each arc-shaped light guide body are tangent to the first and second circular trajectories, respectively. According to the annular light emitting device, the defect that in the prior art, an annular light source cannot uniformly emit light is overcome and the light source emitted from the annular light emitting device can uniformly emit light.

Description

technical field [0001] The invention relates to a ring-shaped light emitting device, in particular to a ring-shaped light emitting device capable of realizing uniform light emission. Background technique [0002] Nowadays, ring light sources are widely used, such as rear lights of automobiles, dashboards of automobiles, or backlight modules of operation panels of various electronic products. Generally speaking, most of the common ring light sources nowadays are composed of a plurality of light-emitting diodes and a light guide ring, and these light-emitting diodes are correspondingly arranged below the light guide ring to directly guide light beams into the light guide ring, so that the light guide ring Shines to form a ring light. However, in practical application of this ring light source, there are many deficiencies. For example, the user can easily directly see the bright spots or bright lines generated by the LEDs, and the areas between the LEDs are prone to dark areas...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect that the ring light source in the prior art cannot achieve uniform light emission, and to provide a ring light emitting device that enables the light source emitted by the ring light emitting device to emit light evenly

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