Dimming method of LED light-emitting device
A light-emitting device and dimming technology, which is applied in the direction of lighting devices, light sources, electric light sources, etc., can solve the problems of reducing the output power of the power supply, reducing the instantaneous current, and the instantaneous current is too large, so as to achieve power reduction and weight reduction , cost-saving effect
Active Publication Date: 2015-09-23
四川能投智慧光电有限公司
View PDF7 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Chinese patent CN 201515523U discloses a driving device for a light-emitting diode LED, and discloses the problem of excessive instantaneous current and obvious electromagnetic interference in the circuit caused by the traditional LED driving method by means of "segmented lighting", the purpose is to reduce The instantaneous current in the circuit reduces the output power of the power supply
None of the above-mentioned comparative documents involves how to obtain a miniaturized, light-weight, and low-cost power converter and how to use the small power converter to achieve the purpose of dimming LED lights and related technical means
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that in the following description, when detailed descriptions of known functions and designs may dilute the main content of the present invention, these descriptions will be omitted here.
[0021] figure 1 It is a schematic diagram of a specific embodiment of the LED lamp color adjustment driver of the present invention.
[0022] In this example, if figure 1 As shown, the LED lamp color adjustment driver 2 includes a time division multiplexing control module 201 and a power output module 202 .
[0023] The time division multiplexing control module 201 has three light source module control signals PMW1 , PMW2 , and PMW3 output, corresponding to the control of the three colors of red, green and blue respectively.
[0024] The power output module 202 outputs a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a color adjusting driver for an LED (Light-Emitting Diode) lamp. A time division multiplexing (TDM) control module is used for dividing light source module control signals corresponding to three colors in the aspect of time so as to make one light source module control signal at most is at high level at any one moment, one path of a power output module at most outputs driving voltage or current so as to drive a corresponding light source module to emit light, so that electric energy supplied by a power converter is sequentially distributed to different branches for use in different time segments, the problem of overload of the power converter, caused by overlaid power peak values, does not exist, and thus, the power configuration of the power converter can be reduced to be 1 / 3 of that of the prior art. The power of the power converter is reduced, subsequently, the size and the weight of the power converter are both reduced, and thus, the cost of the LED lamp is saved.
Description
[0001] The present invention is a divisional application with the application number 201110272764.2, the application date is September 15, 2011, and the title of the invention is an LED lamp color adjustment driver. technical field [0002] The invention belongs to the technical field of LED lamp control, and more specifically relates to a dimming method of an LED light emitting device. Background technique [0003] As a high-efficiency new light source, LED lights are widely used in commercial, industrial, road, advertising light boxes and other fields due to their advantages of long life, low energy consumption, energy saving and environmental protection. [0004] With the wide application of LED lights, people have higher and higher requirements for LED lights, forming a variety of control methods from single brightness adjustment to color adjustment. The control methods adopted for color adjustment mainly include analog linear dimming and digital PWM (Pulse Width Modulat...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
CPCY02B20/42Y02B20/40
Inventor 封正勇龙文涛李东明
Owner 四川能投智慧光电有限公司