CN201811038U

CN201811038U - Light emitting diode (LED illumination device with pulse source

Info

Publication number: CN201811038U
Application number: CN2010205165243U
Authority: CN
Inventors: 张继强
Original assignee: GUIYANG SHIJI TIANYUAN TECHNOLOGY Co Ltd
Current assignee: Guizhou Guangpusen Photoelectric Co Ltd
Priority date: 2010-09-03
Filing date: 2010-09-03
Publication date: 2011-04-27
Anticipated expiration: 2020-09-03

Abstract

The utility model relates to an LED illumination device with a pulse source, which is characterized in that the LED illumination device comprises an LED light module and a current regulator diode (CRD) which are connected in series, the LED light module consists of a plurality of LEDs which are connected in series in one circuit, the LEDs in the LED light module are arranged in arrays in a plurality of lines and rows, and the control end of the CRD is sequentially connected with a diode D1 and a pulse-width modulation (PWM) pulse source. Since power of constant current is interruptedly supplied to the LEDs, the LED illumination device has the advantages that not only can the energy consumption be reduced but also the problem of luminous decay caused by LED overheating can be avoided.

Description

A kind of LED lighting device of tape pulse

Technical field

The utility model relates to the LED lighting device of a kind of lighting device, particularly a kind of tape pulse.

Background technology

The LED illumination has efficient, energy-saving advantages, and the luminous efficiency of current LED illuminating lamp can surpass 70LM/W mostly, has more power savings advantages than traditional electricity-saving lamp.The green light LED luminous efficiency can be up to 683LM/W in theory; The theoretical efficiency of white light LEDs also can reach 182.45LM/W, so the space that the LED illumination efficiency promotes is huge.But the overheated meeting of LED causes the luminous efficiency of LED to descend rapidly, forms so-called " light decay ".The voltage that bears of LED is about 3.2V (between 3.0～3.5V), and in theory, the output of LED light is relevant with drive current, and and independent of power voltage.Unsettled drive current supply can allow LED overheated, thereby causes the luminous efficiency of LED to descend rapidly, forms so-called " light decay ".

It is main that the supply voltage of existing LED optical module mostly is the following low-voltage of 48V greatly.In order to reach the constant current effect, the most complex structure of power supply circuits, efficient is not high, and the cost height causes that LED light fixture finished product structure is huge, price is tended towards superiority, and has limited the rapid popularization of LED illumination to a certain extent.

The utility model content

The purpose of this utility model is, a kind of LED lighting device of tape pulse is provided.It can avoid LED overheated and produce light decay, thereby further guarantees the luminous efficiency of LED, energy-conserving and environment-protective more, and also the circuit structure of lighting device is simple, and cost is lower.

The technical solution of the utility model: a kind of LED lighting device of tape pulse is characterized in that: comprise the LED optical mode group and the current regulator diode CRD of series connection, LED optical mode group is made up of the LED of one tunnel a plurality of serial connections; LED optical mode group, current regulator diode CRD and a power supply are formed the closed-loop path; LED is being arranged as the array of multiple lines and multiple rows in the LED optical mode group; But more than one LED optical mode group serial or parallel connection uses; The control end of described current regulator diode CRD is connected with diode D1 and pwm pulse source in turn.

In the LED lighting device of aforesaid tape pulse, power supply is super capacitor C, super capacitor C solar panel in parallel both sides, and on the solar panel also string commutation diode D2 is arranged.

In the LED lighting device of aforesaid tape pulse, power supply is the electric main that two ends are connected to bridge rectifier.

Compared with prior art, method of the present utility model has been simplified LED lighting circuit structure effectively, the utility model also is converted into the stable pulse electric current output that can control pulsewidth with the electric current of direct current output, by diode D1 controllable CRD current regulator diode is interrupted connects by the pulse frequency of control, LED optical mode group obtains the interruptedly supplying power of controlled frequency, make it be interrupted flicker by controlled frequency, under the situation that delivery reduces by half, utilize human eye to the insensitive feature of high frequency flicker, in the time of can making the LED illuminating lamp input power of rated power 100W be 50W, and human eye perceives to the luminosity effect reach 80W (instrument test still for 50W), actual economize on electricity can reach 40%.And when same illuminating effect was provided, the utility model was compared the LED of traditional direct current supply, because required input power is lower, LED wick caloric value was reduced significantly, and the phenomenon of the too high aggravation light decay of temperature can not appear in LED.Avoid the problem of the overheated light decay of LED, thereby further reduced energy consumption; And the utility model can make by current regulator diode and make the supply current of LED highly stable, equally also can avoid LED overheated, thereby improves the luminous efficiency of LED, has equally also reduced energy consumption.Because lighting device of the present utility model and method are made the LED lighting and are become very simple and cheap, help improving the speed of applying of LED illumination.

Description of drawings

Fig. 1 is the LED lighting device circuit under the solar powered pattern of the utility model;

Fig. 2 is the LED lighting device circuit under the utility model direct current supply pattern;

Fig. 3 is a LED optical mode group arrangement architecture of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described, but not as the foundation to the utility model restriction.

Embodiment

A kind of LED lighting device of tape pulse is characterized in that: comprise the LED optical mode group and the current regulator diode CRD of series connection, LED optical mode group is made up of the LED of one tunnel a plurality of serial connections; LED optical mode group, current regulator diode CRD and a power supply are formed the closed-loop path; LED is arranged as the array (as shown in Figure 3) of multiple lines and multiple rows in the LED optical mode group when chip encapsulates; The control end of described current regulator diode CRD is connected with diode D1 and pwm pulse source in turn.Power supply can be super capacitor C, super capacitor C solar panel in parallel both sides, and on the solar panel also string commutation diode D2 (as shown in Figure 1) is arranged.Power supply can also be connected to the electric main (as shown in Figure 2) of bridge rectifier for two ends.

Specifically can implement as follows: power supply adopts solar powered, that is: the pwm pulse source of a solar panel, super capacitor C, commutation diode D2, a gauge tap K, 1 turnable pulse width, 1 commutation diode D1,1 current regulator diode 2DHL300,2 LED optical mode groups of employing are connected, every is adopted 7 3.2V, the LED tube core of 1W, form by 1 row, 7 row array packages, LED optical mode group power is 2 * 7W, referring to Fig. 1; Daytime, solar battery group was charged to super capacitor C; When needing bright lamp, the gauge tap K that closes, super capacitor C discharge, clock output pulse 200Hz/S, by diode D1 controllable CRD current regulator diode 2DHL300 is connected by the 200Hz/S frequency discontinuity, LED optical mode group obtains the interruptedly supplying power of frequency 200Hz/S.The instrument test input power is 7W, and brightness also is 7 * 80LM/W.Because the optical mode group is alternately lighted the effect of sunset glow at interval and by the interruptedly supplying power of frequency 200Hz/S, human eye is seen is continuous light and can't see glittering of interruption, the human eye vision effect will be from far away greater than 7W, near the illuminating effect of 11W, thereby also can be implemented in further energy-conservation about 40% on the LED efficient illumination basis.

Claims

1. the LED lighting device of a tape pulse, it is characterized in that: comprise the LED optical mode group and the current regulator diode CRD of series connection, LED optical mode group is made up of the LED of one tunnel a plurality of serial connections; LED is arranged as the array of multiple lines and multiple rows in the LED optical mode group; The control end of described current regulator diode CRD is connected with diode D1 and pwm pulse source in turn.

2. the LED lighting device of tape pulse according to claim 1, it is characterized in that: the power supply of the LED lighting device of described tape pulse is super capacitor C, super capacitor C solar panel in parallel both sides, and on the solar panel also string commutation diode D2 is arranged.

3. the LED lighting device of tape pulse according to claim 1, it is characterized in that: the power supply of the LED lighting device of described tape pulse is the electric main that two ends are connected to bridge rectifier.