A kind of led drive circuit and led lamp
A technology of LED drive and drive circuit, which is applied in the direction of electric lamp circuit layout, electric light source, lighting device, etc., and can solve the problems of accelerating LED light decay, aging, damage, etc.
Active Publication Date: 2017-06-23
OCEANS KING LIGHTING SCI&TECH CO LTD +1
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
LED is used as a constant current load, and the current flowing through the LED must be kept within the rated current. However, when the LED junction temperature rises, if the LED current is not controlled in time, the output current value of the drive circuit is reduced to lower the LED junction temperature. Otherwise, it will accelerate the light decay, aging or even damage of the LED, which will seriously shorten the service life of the LED
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
[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0032] See figure 1 , is a schematic diagram of the structure and composition of the LED driving circuit of the embodiment of the present invention.
[0033] In the embodiment of the present invention, the LED driving circuit is connected to the power supply and the LED load, and the structural composition of the LED driving circuit specifically includes: a temperature control unit 1, a temperature detection unit 2, and a constant current integrated output unit 3, ...
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 an LED drive circuit and an LED lamp. The drive circuit is connected with a power supply and an LED load, and includes: a temperature detection unit, a temperature control unit, and a constant current integrated output unit; the temperature detection unit is connected with the temperature control unit The unit is connected, the input end of the constant current integrated output unit is connected to the temperature control unit, and the output end is connected to the LED load; the temperature control unit is respectively connected to the temperature detection unit and the constant current integrated output unit, The temperature control unit controls the operating current output by the constant current integrated output unit to the LED load according to the temperature of the LED load detected by the temperature detection unit. The temperature detection unit includes a thermistor R12, and the thermal One end of the sensitive resistor R12 is grounded, and the other end is connected to the temperature detection pin of the single-chip microcomputer chip in the temperature control unit.
Description
technical field [0001] The invention relates to the field of LED driving, in particular to an LED driving control circuit and an LED lamp. Background technique [0002] As a new type of light source, LED has the characteristics of energy saving, environmental protection and high efficiency. The technology has matured and been applied in various fields, and various LED drive circuits have also appeared. LED is used as a constant current load, and the current flowing through the LED must be kept within the rated current. However, when the LED junction temperature rises, if the LED current is not controlled in time, the output current value of the drive circuit is reduced to lower the LED junction temperature. Otherwise, it will accelerate the light decay, aging or even damage of LED, which will seriously shorten the service life of LED. Contents of the invention [0003] The technical problem to be solved by the embodiments of the present invention is to provide an LED driv...
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 Patents(China)
IPC IPC(8): H05B37/02
Inventor 周明杰孙占民
Owner OCEANS KING LIGHTING SCI&TECH CO LTD