Color temperature-adjustable LED light source and manufacturing method thereof

A technology of LED light source and manufacturing method, which is applied in the direction of electrical components, electric solid devices, circuits, etc., can solve the problems of high light intensity, uneven two-color mixed light, weak peripheral light intensity, etc., and achieve the effect of uniformly mixed white light

Pending Publication Date: 2018-03-23
APT ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the LED light source has Lambertian luminous characteristics, the light intensity in the central area of ​​the light source is relatively high, and the peripheral light intensity is weak, resulting in uneven two-color light mixing and poor light color consistency, which cannot well meet market demand.

Method used

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  • Color temperature-adjustable LED light source and manufacturing method thereof
  • Color temperature-adjustable LED light source and manufacturing method thereof
  • Color temperature-adjustable LED light source and manufacturing method thereof

Examples

Experimental program
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Embodiment 1

[0043] Such as figure 1 As shown, this embodiment discloses an LED light source with adjustable color temperature and uniform light mixing, including a first LED chip group 104, a second LED chip group 105, and an LED substrate. An integrally formed plastic reflector is arranged on the LED substrate, and a circular reflective cavity 102 is provided in the middle of the reflector. The circular reflective cavity 102 runs through the reflector, and the side wall of the circular reflective cavity 102 is arc-like. The center of the top surface of the thermally conductive substrate within the range corresponding to the circular reflection cavity is provided with a rounded truncated groove, and the top surface of the thermally conductive substrate is strip-shaped in the rounded truncated groove and on the periphery of the rounded truncated groove.

[0044] The material of the reflector is PPA, PCT, EMC, SMC and other high heat-resistant engineering plastic materials. At the same time...

Embodiment 2

[0055] The invention provides a method for manufacturing an LED light source with adjustable color temperature, comprising the following steps:

[0056] S1. Fabricate a reflector with an open circular emitting cavity on the heat-conducting substrate by injection molding or molding.

[0057] S2. Making a rounded frustum-shaped groove in the middle of the bottom surface of the emitting chamber by stamping or etching.

[0058] S3. Fix the first LED chipset in the rounded truncated groove, and fix the second LED chipset on the bottom surface of the reflective cavity outside the rounded truncated groove.

[0059] S4. Fill the first groove with fluorescent colloid Y1, a fluorescent colloid Y1 covering the first LED chipset; fill the reflective cavity with fluorescent colloid Y2, and the second fluorescent colloid Y2 covering the first fluorescent colloid.

[0060] S5. High temperature curing fluorescent colloid Y1 and fluorescent colloid Y2.

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Abstract

The present invention provides an LED light source with adjustable color temperature, which includes a heat-conducting substrate, a first LED chip group and a second LED chip group respectively connected to different external circuits, and the heat-conducting substrate is provided with a reflector penetrating through itself. Cavity; the center of the top surface of the heat conduction substrate corresponding to the reflective cavity is provided with a first groove, the first LED chip group is arranged in the first groove, and the first fluorescent colloid is arranged in the first groove And the first fluorescent colloid covers the first LED chip group; the top surface of the thermally conductive substrate on the periphery of the first groove is provided with a second LED chip group; the reflective cavity is provided with a second fluorescent colloid; the The second fluorescent colloid is covered on the first fluorescent colloid and the second LED chip group. The invention also provides a manufacturing method of an LED light source with adjustable color temperature. Through the above structure and steps, in order to realize the LED light source with adjustable color temperature and uniform light mixing, the present invention transforms the distribution of fluorescent colloids in the horizontal direction into vertical distribution in the traditional adjustable color temperature LED light source fluorescent colloid, so that the light emitting area of ​​different color temperature The axes are coincident, and the light mixing is more uniform.

Description

technical field [0001] The invention relates to the field of LED light sources, in particular to an LED light source with adjustable color temperature and a manufacturing method thereof. Background technique [0002] LED light sources and their lamps have been widely used in indoor and outdoor lighting, and have made due contributions to energy saving around the world. However, different countries and regions have different requirements for the optical taste of lighting due to their different environments. For example, Asian countries represented by China like lights with high color temperature, and brightness is one of their main concerns about lights; European and American countries, located in severe cold regions, like warm light with low color temperature, and believe that warm colors bring warmth to people. a feeling of. Therefore, by changing the color temperature of the light source, the human body can create the most suitable light environment for people's work and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/075H01L33/48H01L33/50H01L33/58H01L33/60H01L33/64
CPCH01L33/504H01L25/0753H01L33/48H01L33/58H01L33/60H01L33/642
Inventor 曾照明何贵平万垂铭刘桂良姜志荣侯宇肖国伟
Owner APT ELECTRONICS
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