CN201152473Y

CN201152473Y - LED decoration lamp

Info

Publication number: CN201152473Y
Application number: CNU2008200001358U
Authority: CN
Inventors: 赖文程
Original assignee: DONGGUAN DAXIN ORNAMENTAL GIFT Co Ltd
Current assignee: DONGGUAN DAXIN ORNAMENTAL GIFT Co Ltd
Priority date: 2008-01-03
Filing date: 2008-01-03
Publication date: 2008-11-19
Anticipated expiration: 2018-01-03

Abstract

The utility model provides an LED ornamental lamp which comprises a timing and light controlling circuit of a light emitting diode connected to the input terminal of an alternating power source and an ornamental lamp string composed of at least a light emitting diode connected in series, a first diode used for commutating filtration is connected with the ornamental lamp string and the input terminal of the alternating power source in series, the timing and light controlling circuit of the light emitting diode turns on and off the power supplying source of an LED ornamental lamp string; the timing and light controlling circuit of the light emitting diode comprises an alternating current-direct current power supply switching unit, a light controlling switch circuit, a timing circuit and a power source turning-on and off executive circuit. The LED ornamental lamp not only realize the timing, the turning-on and the turning-off control of the LED ornamental lamp string according to the light and the shade of a light ray, but also reach the stable control of the illuminating condition of the LED ornamental lamp string through the mutual coordination between a timing chip U1 and a photoconductive resistance RG, so that the electric energy is effectively saved.

Description

A kind of LED decorative lamp

Technical field

The utility model relates to a kind of decorative lamp, but relates in particular to a kind of duration of work timing controlled and can be according to the LED decorative lamp light fixture of light control.

Background technology

Utilizing light emitting diode (LED) is the inexorable trend of following light fixture as light source, and main cause is that light emitting diode has that power consumption is low, temperature is low and plurality of advantages such as long working life.

At present, light emitting diode is widely used in Landscape Lighting and city illumination engineering mostly; Yet, these Landscape Lightings and city illumination etc. all need its switch of artificial control, need the user will constantly go to consider when drive and close these lighting devices, also can forget sometimes and close or hold these lighting installations, bring some inconvenience to use, but also cause waste of electric energy.

The utility model content

For addressing the above problem, main purpose of the present utility model is to provide a kind of LED decorative lamp, and when using, described decorative lamp can be realized the light-operated keying of described LED decorative chain and regularly keep hommization such as illumination condition to control automatically.

For achieving the above object, the utility model provides a kind of LED decorative lamp, it comprises light emitting diode timing light-operated circuit that links to each other with ac power input end and the decorative chain that is become by at least one light emitting diode string joint group, and described decorative chain and described ac power input end are serially connected with first diode; Described light emitting diode timing light-operated circuit is controlled the break-make of described LED decorative chain power supply; Described light emitting diode regularly light-operated circuit comprises AC-DC power supply converting unit, light-controlled switching circuit, timing circuit and on/off executive circuit; The AC-DC power supply converting unit is used for the alternating current of input is changed into D.C. regulated power supply, it comprises: first resistance and second diode of connecting successively with described ac power input end, and the output and the voltage-stabiliser tube between the earth terminal and first electric capacity that are connected described second diode after parallel with one another; Light-controlled switching circuit comprises the first positive-negative-positive triode, the 4th NPN type triode, the 3rd resistance, the 4th resistance and photo resistance; Wherein, the emitter stage of described first triode links to each other with described AC-DC power supply converting unit, base stage links to each other with the colelctor electrode of described the 4th triode by the 4th resistance, the emitter stage of described the 4th triode links to each other with earth terminal, described the 3rd resistance is connected between the emitter stage and described the 4th transistor base of described first triode, described photo resistance is connected to described the 4th transistor base and earth terminal, and first triode is the positive-negative-positive triode, and the 4th triode is a NPN type triode; Timing switch circuit is connected in series mutually with described light-controlled switching circuit, carries out the timing operation to receive the power supply load signal and to start time block, and produces the signal that drives described decorative chain on/off; The on/off executive circuit comprises the 8th resistance that links to each other with described timing circuit output, and is serially connected in the IGCT between described decorative chain and the earth terminal, and the break-make of described IGCT is controlled in the output of described the 8th resistance.

From technique scheme as can be seen, LED decorative lamp of the present utility model has following beneficial effect:

1) light-controlled switching circuit is by photo resistance bright dark according to use occasion light, to produce the act in collusion to make each other's confessions break-make of power supply of control LED lamp, realized that hommization controls automatically, makes things convenient for the user to control, and saved electric energy effectively.

2) light-controlled switching circuit is combined with timing switch circuit, keep the regular hour (for example, eight hours evenings) by timing switch circuit, make the LED lamp act in collusion to make each other's confessions power supply in case by after the light-controlled switching circuit control unlatching, no longer be subjected to the influence of extraneous bright and dark light, guaranteed LED lamp string steady operation.

Description of drawings

Fig. 1 is the circuit theory diagrams of the utility model LED decorative lamp.

The specific embodiment

Below in conjunction with embodiment shown in the drawings the technical solution of the utility model is done further detailed description.

See also Fig. 1, Fig. 1 is the circuit theory diagrams of the utility model LED decorative lamp.In the present embodiment, the employed power supply of LED decorative lamp is AC power J1, for example is the alternating current of 120V.The circuit of LED decorative lamp comprises light emitting diode timing light-operated circuit that links to each other with AC power J1 input and the decorative chain 1 that is become by at least one light emitting diode string joint group.

As shown in the figure, described decorative chain 1 is composed in series successively by 49 light emitting diodes (D2 to D50), and described decorative chain 1 and described AC power J1 input have been serially connected with the first diode D1 of rectified action; AC power J1 gives decorative chain 1 power supply after halfwave rectifier through the described first diode D1.

Described light emitting diode regularly light-operated circuit is made up of AC-DC power supply converting unit 2, light-controlled switching circuit 3, conducting holding circuit 4, timing circuit 5 and on/off executive circuit 6.

Be used for will input the alternating current AC-DC power supply converting unit 2 that changes into D.C. regulated power supply comprise: first resistance R 1 and the second diode D51 that connect successively with described ac power input end, and be connected the output of the described second diode D51 and the voltage-stabiliser tube DZ1 between the earth terminal and first capacitor C 1 after parallel with one another.AC-DC power supply converting unit 2 (has for example changed into low-voltage DC with ac voltage power supply J1, the 9V direct current), to give regularly follow-up conducting holding circuit 4,

timing circuit

5 and 6 power supplies of on/off executive circuit of light-operated circuit of described light emitting diode.

More preferably, at the two ends of first capacitor C 1 and remain in second resistance R 2 of electric weight in first capacitor C 1 after being connected to the outage of releasing.

Light-controlled switching circuit 3 comprises: the first positive-negative-positive triode Q1, the 4th NPN type triode Q4, the 3rd resistance R 3, the 4th resistance R 4 and photo resistance RG; Wherein, the emitter stage of the described first triode Q1 links to each other with described AC-DC power supply converting unit 2, base stage links to each other with the colelctor electrode of described the 4th triode Q4 by the 4th resistance R 4, the emitter stage of described the 4th triode Q4 links to each other with earth terminal, described the 3rd resistance R 3 is connected between the emitter stage and described the 4th triode Q4 base stage of the described first triode Q1, described photo resistance RG is connected to described the 4th triode Q4 base stage and earth terminal, the first triode Q1 is the positive-negative-positive triode, and the 4th triode Q4 is a NPN type triode.

The foregoing circuit structure makes photo resistance RG and the 3rd resistance R 3 constitute bleeder circuit, and when extraneous light is strong (daytime), the resistance of photo resistance RG is less; When extraneous light deepening (evening), the resistance of photo resistance RG increases, and the voltage that is carried in photo resistance RG can change thereupon; If be carried in magnitude of voltage on the photo resistance RG greater than a certain setting value (for example 0.3V), so, the 4th triode Q4 is with conducting, thereby make the first triode Q1 conducting, just loaded the dc source of AC-DC power supply converting unit 2 outputs at this moment, with on the timing circuit 5 that described light-controlled switching circuit 3 is connected in series mutually.

In this enforcement, timing circuit 5 is timing chip U1, after loading dc source (for example 9V) on the 9th～14 pin on the timing chip U1, produce and export the signal (the 8th pin output high level of timing chip U1) that drives described decorative chain 1 on/off, so that entire circuit is in the guiding path state, promptly described decorative chain 1 (light emitting diode D2 to D50) is lighted; Meanwhile, the high level of timing chip U1 the 8th pin output begins to start its inner time block and (for example carries out the timing operation, regularly eight hours), after eight hours, the low level that is carried in power supply on the described decorative chain 1 is turn-offed in the output of timing circuit 5 (the 8th pin of timing chip U1) output, at this moment, entire circuit is in off state, and described decorative chain 1 (light emitting diode D2 to D50) extinguishes.

Need to prove that described timing circuit 5 also comprises manual timing reset module or self-timing reseting module, can finish the function of the timing reset of timing circuit 5.

In order to make the LED lamp act in collusion to make each other's confessions power supply in a single day by after the light-controlled switching circuit control unlatching, no longer be subjected to the influence of extraneous bright and dark light, promptly guarantee the stable of LED lamp string luminance, described decorative lamp also comprises conducting holding circuit 4.In this conducting holding circuit 4, comprise second capacitor C 2, the 5th resistance R 5 and the 3rd triode Q3; The 3rd triode Q3 is a NPN type triode, and its colelctor electrode links to each other with the colelctor electrode of described the 4th triode Q4, and emitter stage connects earth terminal; Second capacitor C 2 is connected in parallel between the base stage and earth terminal of described the 3rd triode Q3; One end of the 5th resistance R 5 links to each other with the base stage of described the 3rd triode Q3, and the other end links to each other with the output (the 8th pin of timing chip U1) of described timing circuit 5.

When being high level, LED lamp string is luminous, at this moment when the output (the 8th pin of timing chip U1) of described timing circuit 5, because the base stage of described the 3rd triode Q3 links to each other with the 8th pin, also be high level, and, the 4th triode Q4 and the 3rd triode Q3 common collector, therefore, when photo resistance RG is subjected to influencing of extraneous light (for example, having brightened again) again, as long as the timing of described timing circuit 5 (for example, eight hours) do not arrive, just can not influence the break-make of described decorative chain 1.

The on/off instruction of described timing circuit 5 outputs output is carried out by break-make executive circuit 6, and break-make executive circuit 6 can be various controlled electronic switch.In the present embodiment, break-make executive circuit 6 specifically comprises the 8th resistance R 8 that links to each other with described timing circuit 5 outputs, and being serially connected in IGCT Q5 between described decorative chain 1 and the earth terminal, the break-make of described IGCT Q5 is controlled in the output of described the 8th resistance 8.

Therefore, the utility model has not only been realized according to the light and shade of light light emitting diode D2 to D50 being carried out regularly keying control, but also reached the stable control of illumination condition by cooperatively interacting of timing chip U1 and photo resistance RG, effectively saved electric energy.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, any personnel that are familiar with this technology may utilize the technology contents of above-mentioned announcement to be changed or be modified to the equivalent embodiment of equivalent variations, every content that does not break away from technical solutions of the utility model,, all still belong in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.

Claims

1. LED decorative lamp, comprise light emitting diode timing light-operated circuit that links to each other with ac power input end and the decorative chain (1) that is become by at least one light emitting diode string joint group, described light emitting diode timing light-operated circuit is controlled the break-make of described LED decorative chain power supply; It is characterized in that:

Described decorative chain (1) is serially connected with first diode (D1) with described ac power input end;

Described light emitting diode regularly light-operated circuit comprises:

Exchange a direct current power conversion unit (2), be used for the alternating current of input is changed into D.C. regulated power supply, it comprises: first resistance (R1) and second diode (D51) of connecting successively with described ac power input end, and the output and voltage-stabiliser tube between the earth terminal (DZ1) and first electric capacity (C1) that are connected described second diode (D51) after parallel with one another;

Light-controlled switching circuit (3) comprising: the first positive-negative-positive triode (Q1), the 4th NPN type triode (Q4), the 3rd resistance (R3), the 4th resistance (R4) and photo resistance (RG); Wherein, the emitter stage of described first triode (Q1) links to each other with described AC-DC power supply converting unit (2), base stage links to each other with the colelctor electrode of described the 4th triode (Q4) by the 4th resistance (R4), the emitter stage of described the 4th triode (Q4) links to each other with earth terminal, described the 3rd resistance (R3) is connected between the emitter stage and described the 4th triode (Q4) base stage of described first triode (Q1), described photo resistance (RG) is connected to described the 4th triode (Q4) base stage and earth terminal, first triode (Q1) is the positive-negative-positive triode, and the 4th triode (Q4) is a NPN type triode;

Timing circuit (5) is connected in series mutually with described light-controlled switching circuit (3), carries out the timing operation to receive the power supply load signal and to start time block, and produces the signal that drives described decorative chain (1) on/off;

On/off executive circuit (6), comprise the 8th resistance (R8) that links to each other with described timing circuit (5) output, and being serially connected in IGCT (Q5) between described decorative chain (1) and the earth terminal, the break-make of described IGCT (Q5) is controlled in the output of described the 8th resistance (8).

2. LED decorative lamp according to claim 1, it is characterized in that: described AC-DC power supply converting unit (2) also comprises second resistance (R2) that is connected to first electric capacity (C1) two ends, to remain in the electric weight in first electric capacity (C1) after the outage of releasing.

3. LED decorative lamp according to claim 1 is characterized in that: also comprise conducting holding circuit (4), described conducting holding circuit (4) comprises:

The 3rd triode (Q3), the 3rd triode (Q3) are NPN type triode, and its colelctor electrode links to each other with the colelctor electrode of described the 4th triode (Q4), and emitter stage connects earth terminal;

Second electric capacity (C2) is connected in parallel between the base stage and earth terminal of described the 3rd triode (Q3);

The 5th resistance (R5), the one end links to each other with the base stage of described the 3rd triode (Q3), and the other end links to each other with the output of described timing circuit (5).

4. LED decorative lamp according to claim 1 is characterized in that, described timing circuit (5) also comprises manual timing reset module or self-timing reseting module.