Light emitting diode (LED) marker light
A technology of LED sign lamps and power supplies, which is applied in the direction of lamp circuit layout, lighting devices, light sources, etc., can solve the problems of high cost and complicated circuits, and achieve the effect of low cost and simple control and driving circuits
Inactive Publication Date: 2012-12-05
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a low-cost, simple-circuit LED signage lamp for the defects of high cost and complicated circuit of the control circuit of the LED lamp in the prior art
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[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0023] like figure 1 As shown, the LED identification lamp in the embodiment of the present invention includes a power supply 10, a control unit 20, a drive unit 30 and an LED unit 40, wherein:
[0024] The control unit 20 includes an input control port 22, a processing unit 23, an output control port 24, a search unit 27 and a program memory 28. The program memory 28 contains the corresponding relationship between the amount of light variation and the multi-level flicker frequency, and the input control port 22 is connected to a perception background The photosensitive device 26 of the light, the...
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The invention discloses a light emitting diode (LED) marker light. The LED marker light comprises a power supply, an LED unit, a control unit and a drive unit, wherein the control unit comprises an input control port, a processing unit, an output control port (24), a searching unit and a program memory which contains a corresponding relation between light ray variation and the multistage flicker frequency, the input control port is connected with a photosensitive device which senses background light rays, the light ray variation is converted into voltage variation or current variation, the voltage variation or the current variation is fed back to the input control port, and the searching unit searches and acquires the corresponding flicker frequency according to the corresponding relation between preset light ray variation and the flicker frequency and the voltage variation or the current variation which represents the light ray variation; and the processing unit generates pulse width modulation (PWM) drive signals according to the acquired flicker frequency and outputs the drive the PWM drive signals to the drive unit through the output control port. Control and drive circuits of the LED marker light are simple, and low in implementation cost.
Description
technical field [0001] The invention relates to the field of LED display, in particular to an LED identification lamp. Background technique [0002] With the continuous development of science and technology, new products and new technologies are constantly innovating. As a new type of light source, LED has the characteristics of energy saving, environmental protection and high efficiency. A variety of LED driver circuits. At present, DC-DC chopping technology is used to drive LED in low-voltage places. It has the advantages of low power consumption, high efficiency, stability and reliability, small size per unit power, light weight, etc., but its cost is high, the circuit is complicated, and easy to use. Damage, strong high-frequency interference and other shortcomings have brought inconvenience to users. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an LED sign lamp with low cost and simple circuit for the d...
Claims
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IPC IPC(8): H05B37/02
Inventor 周明杰黄柯青
Owner OCEANS KING LIGHTING SCI&TECH CO LTD