A method for adjusting the color temperature of patch LED lamps
A technology for adjusting the color temperature of LED lamps, which is applied to the layout of electric lamp circuits, lighting devices, light sources, etc., can solve the problems of reduced overall white light luminous efficiency and low conversion efficiency of red phosphors, and achieves improved CRI and controllable color temperature, high Color rendering, high luminous flux effect
Inactive Publication Date: 2017-01-25
北京国网弘泰科技有限公司
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Problems solved by technology
[0013] The technical problem to be solved by the present invention is to provide a method for adjusting the color temperature of SMD LED lamps, which solves the problem in the prior art that the conversion efficiency of red phosphor powder is low, resulting in a decrease in the overall white light luminous efficiency
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] The structure and working process of the present invention will be further described below.
[0034] A method for adjusting the color temperature of a patch LED lamp, comprising the steps of:
[0035] Step 1. Apply voltage to the three circuits of the SMD LED lamp, and connect an adjustable resistor in series on each circuit;
[0036] Step 2. Set the light-emitting surface of the SMD LED lamp relative to the color temperature and color rendering index measuring device;
[0037] Step 3. Adjust the current flowing through the blue chip of the SMD LED lamp. When the color temperature reaches 5900K-6100K, perform step 4;
[0038] Step 4. Adjust the current flowing through the yellow chip of the SMD LED lamp. The current range is 0-40mA. When the display index is lower than the preset color rendering index, adjust the current flowing through the yellow chip of the SMD LED lamp to increase. When the color rendering index is higher than the preset color rendering index, adju...
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The invention discloses a chip LED lamp color temperature adjusting method. According to the method, a high-power blue light wafer, a medium-power red light wafer and a small-power yellow light wafer are integrated and packaged, a white light LED high in luminous flux and high in color rendering index is obtained through a fluorescent powder excitation mode, through control over the current of the red light wafer and the current of the yellow light wafer, the effect of increasing the color rendering index and the color temperature controllable effect are reached, and the problem that the light emitting efficiency is sacrificed to increase the color rendering index is avoided. Three current loops are adopted for the three wafers respectively, fluorescence glue is packaged on the surfaces of the wafers, the blue light wafer excites the fluorescence glue to generate pure white light with the color temperature being about 6000 k, and the color temperature of the white light can be adjusted by controlling the current of the yellow light wafer; the white light color rendering index can be adjusted by controlling the current of the red light wafer.
Description
technical field [0001] The invention belongs to the application field of electronic products, and in particular relates to a method for adjusting the color temperature of a patch LED lamp. Background technique [0002] LED is the abbreviation of light emitting diode in English. Its basic structure is a piece of electroluminescent semiconductor material, which is placed on a shelf with leads, and then sealed with epoxy resin around it to protect the inner core wire. role, so the shock resistance of LED is good. [0003] Color temperature of the light source: People use the absolute temperature of a complete radiator equal to or close to the color temperature of the light source to describe the color surface of the light source (the color seen when the human eye directly observes the light source), also known as the color temperature of the light source. Color temperature is expressed in absolute temperature K. Different color temperatures will cause people to respond differ...
Claims
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IPC IPC(8): H05B37/02
Inventor 孙道明司马云吴会利谢中民
Owner 北京国网弘泰科技有限公司