Light source capable of adjusting color temperatures and color rendering indexes

An adjustable color temperature technology, applied in the direction of light source, light source fixing, lighting and heating equipment, etc., can solve the problems of increasing LED gold wire breakage and open circuit, inconsistent power density in different areas, thermal imbalance and other problems, so as to achieve unsatisfactory reliability of the whole lamp. Damaged, no risk of thermal mismatch, long life effects

Pending Publication Date: 2018-03-30
APT ELECTRONICS
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention conforms to the technical characteristics of coating phosphors with different color temperatures in different areas. The obvious disadvantage of this invention is that the obtained color temperature can only be between the color temperature of the cool white light source area and the color temperature of the warm white light source area on the chromaticity diagram. Belong to limited color temperature adjustable
Another fatal shortcoming of this invention is that in the process of adjusting the color temperature, due to the control of the power output in different areas, thermal imbalance and serious thermal mismatch of the fluorescent conversion material will greatly increase the probability of the LED gold wire breaking and opening.
This invention has a great disadvantage: this technology can only adjust the col

Method used

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  • Light source capable of adjusting color temperatures and color rendering indexes
  • Light source capable of adjusting color temperatures and color rendering indexes
  • Light source capable of adjusting color temperatures and color rendering indexes

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Embodiment 1

[0035] The invention discloses a light source with adjustable color temperature and display index, such as Figure 1-4 As shown, it includes a substrate 1, a blue light emitting diode 2, a variety of fluorescent diaphragms 4, and a plurality of control modules 5; the blue light emitting diode 2 is electrically connected to the substrate 1, and the fluorescent diaphragm 4 is installed on the light output path of the blue light emitting diode 2 21, each fluorescent membrane 4 is connected to a control module 5 correspondingly.

[0036]Specifically, the connection between the blue light emitting diode 2 chip and the substrate 1 can be through front-chip gold wire bonding or flip-chip eutectic welding.

[0037] In this embodiment, the control module 5 includes a control core and an action actuator; the control core receives an externally input color temperature control signal, and calculates and outputs a pulse waveform for adjusting the position of the fluorescent diaphragm 4 thr...

Embodiment 2

[0049] The present invention provides yet another light source with adjustable color temperature and color display, such as Figure 5 , 6 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, and the difference is that the red fluorescent diaphragm 43, the green fluorescent diaphragm 44, and the yellow fluorescent diaphragm 45 of this embodiment are all circular, and they pass through the rotating shaft Placed concentrically; the distribution of red fluorescent conversion material 421, green fluorescent conversion material 422, and yellow fluorescent conversion material 423 on the corresponding circular red fluorescent membrane 43, green fluorescent membrane 44, and yellow fluorescent membrane 45 is: along the circular In the circumferential direction of the circle, the concentration is distributed from high to low, along the radial direction of the circle, the concentration is equal, and the highest concentration and the lowest concentratio...

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PUM

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Abstract

The invention discloses a light source with adjustable color temperature and display index, which includes a substrate, a blue light emitting diode, various fluorescent diaphragms and a correspondingly connected control module, the blue light emitting diode is installed on the substrate, and various fluorescent diaphragms Installed on the light output path of the blue light-emitting diode in a specific order; the present invention receives the external input color temperature control signal through the control core, calculates and outputs the signal for adjusting the fluorescent diaphragm through the preset control program, and the action actuator receives the control core The signal drives the action of the fluorescent diaphragms to make their overlapping positions change, so that the blue light excites different proportions of the fluorescent conversion materials, and different color temperatures can be obtained. The invention not only realizes the large-scale continuous adjustment of the color temperature and display index, but also only needs a constant output of the LED driving part, has no risk of thermal mismatch, is safe, reliable, low in cost, and has a long service life.

Description

technical field [0001] The invention belongs to the technical field of LEDs, and in particular relates to a light source with adjustable color temperature and display. Background technique [0002] In the field of LED lighting packaging, the CIE1931 2° visual space chromaticity diagram is commonly used. Conventional lighting usually divides different white light color regions along the black body radiation line, such as ANSI 7th-order square patch or 3rd-order and 5th-order MacAdam ellipse, etc. Special lighting usually defines a special area on both sides of the black body radiation line / below as the white light color area. The same color area is considered to be similar in color and can be replaced equally. However, due to the large color coordinate span between different color areas, it is considered to be White light of different colors. For a given ordinary white lighting source, its color coordinates only belong to a certain color zone, and cannot be compatible with d...

Claims

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Application Information

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IPC IPC(8): F21K9/20F21K9/64F21V19/00F21Y115/10
CPCF21K9/20F21K9/64F21V19/002F21V23/004F21Y2115/10
Inventor 曾照明刘桂良陈智波姜志荣
Owner APT ELECTRONICS
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