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A cob light source that eliminates stray light

A light source, stray light technology, applied in the field of LED lighting, can solve the problems affecting the COB light output effect, yellow and blue spots, etc., and achieve the effect of solving blue spots and uniform light output

Active Publication Date: 2020-03-17
GUANGDONG RAYTON INTELLIGENT OPTO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The COB light source generally includes a substrate and an LED chip arranged on the substrate. Some COB LEDs need to emit light through a small-angle lens. The specifications of the LED chips of this kind of COB are consistent, and the light often appears yellow and blue spots, which affects the COB. light effect

Method used

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  • A cob light source that eliminates stray light
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Embodiment Construction

[0011] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0012] Such as figure 1 As shown, a COB light source for eliminating stray light includes a substrate 1 and more than one LED light string 2 arranged on the substrate 1. This embodiment should be provided with two strings of LED light strings 2, and the LED light strings 2 The LED chips are connected in series and are distributed in a circle. The centers of the two strings of LED light strings 2 overlap and the diameters of the circles are different. The number of LED chips in the two LED light strings 2 is equal and corresponding to each other. The line points to the center of the LED string 2.

[0013] Such as figure 1 As shown, the LED light string 2 is composed of a plurality of first LED chips 4 and second LED chips 3, the first LED chips 4 and the second LED chips 3 are spaced and equidistantly arranged, and the first LED chips 4 and the seco...

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PUM

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Abstract

The invention relates to a COB light source for removing stray light. The COB light source comprises a substrate and LED chips which are arranged on the substrate; one or more LED lighting strings arearranged on the substrate, the LED chips in the LED lighting strings are in series connection and are distributed circumferentially, and the LED lighting strings are composed of multiple first LED chips and multiple second LED chips; the first LED chips and the second LED chips are arranged at intervals, and the light-emitting area of the first LED chips is larger than that of the second LED chips. According to the COB light source for removing the stray light, through an array mode that the first LED chips and the second LED chips in the LED lighting strings are distributed at intervals, byusing the characteristic of the light radiation range of two kinds of chips, when power-on current of the LED lighting strings is rated current of the second LED chips, the large-sized first LED chipseffectively excite fluorescent powder which cannot be radiated by the small-sized second LED chips, light emission is even, and meanwhile the situation is also avoided that top fluorescent powder isexcessively excited by the large-sized first LED chips under the rated current condition so that locus ceruleus can be caused.

Description

technical field [0001] The invention relates to the field of LED lighting, in particular to a COB light source for eliminating stray light. Background technique [0002] The COB light source generally includes a substrate and LED chips arranged on the substrate. Some COB LEDs need to emit light through a small-angle lens. The specifications of the LED chips of this kind of COB are consistent, and the light often appears yellow and blue spots, which affects the COB. light effect. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a COB light source that eliminates stray light and solve the problem of yellow and blue light spots in the prior art. [0004] In order to solve the above technical problems, the technical solution of the present invention is: a COB light source for eliminating stray light, including a substrate and LED chips arranged on the substrate; more than one LED lamp string is arranged on the substr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21K9/20F21K9/64F21V19/00F21V9/32F21Y115/10F21Y103/33
CPCF21K9/20F21K9/64F21V19/001F21Y2103/33F21Y2115/10
Inventor 刘树菁李金龙
Owner GUANGDONG RAYTON INTELLIGENT OPTO CO LTD