CN102790540A - LED (Light-Emitting Diode) light source - Google Patents
LED (Light-Emitting Diode) light source Download PDFInfo
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- CN102790540A CN102790540A CN201210311105XA CN201210311105A CN102790540A CN 102790540 A CN102790540 A CN 102790540A CN 201210311105X A CN201210311105X A CN 201210311105XA CN 201210311105 A CN201210311105 A CN 201210311105A CN 102790540 A CN102790540 A CN 102790540A
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Abstract
The invention discloses a LED (Light-Emitting Diode) light source which comprises a capacitive energy storage part and a rectification circuit. The capacitive energy storage part comprises a polyester film core; a zinc foil layer is surrounded outside the polyester film core; a polyester film layer is surrounded outside the zinc foil layer; an insulating tape layer is surrounded outside the polyester film layer; both front and rear ends of the capacitive energy storage part are provided with epoxy resin layers; one end of the capacitive energy storage part is electrically connected with an AC (Alternate Current) power supply; and the other end of the capacitive energy storage part is firstly connected in series with two capacitances, then is connected in parallel with a resistance and is electrically connected with the rectification circuit. According to the invention, a high voltage and a low current can be output; not only can the LED illuminating effect be improved and the problems of lumens depreciation, high heat and the like are solved, but also the LED light source has high voltage resistance, is waterproof, has anti-creeping property and is not afraid of the electric shock or the instantaneous short circuit, the service life of a LED lamp bead is prolonged and the LED light source is simple in structure and low in cost.
Description
Technical field
The present invention relates to a kind of power supply, relate in particular to a kind of LED power supply.
Background technology
The LED need of work inserts direct current, so supply with LED after need transferring the alternating current of 220V to direct current in actual use.The LED power supply is commonly switch mode power at present, and it is with the higher-order of oscillation (50KHZ-100KHZ) way of electromagnetic induction, produces low voltage and high current.Like this because high electric current makes power supply and LED heating seriously.LED is bright more then must to strengthen electric current if will make, and strengthens electric current, and LED can be warmmer, and the power supply body is also warmmer simultaneously.Therefore heat radiation is if bad meeting produces light decay, and power supply is fault more easily.High electric current causes the circuit heating serious; Most of electric energy has changed into heat energy; Cause LED luminous efficiency not high (only reaching 20%-30% efficient), last producer has to select to use high-capacity LED, has not only strengthened cost; And the high-capacity LED caloric value is big, causes in the lamp and the high heat problem of shell (temperature is about 63 degree-70 degree).Except that the lamp pearl life-span short and light decay greatly, because of high thermal man's hand can not go to touch it more fully.Its power supply components and parts are a lot of in addition, if there is a components and parts Yin Gaowen to change or fault, with accelerating the speed that the lamp pearl is burnt, also can produce the electromagnetic wave of harmful to human.
Summary of the invention
The object of the present invention is to provide a kind of new LED power supply.
According to an aspect of the present invention, a kind of LED power supply is provided, has comprised condenser type energy storage component and rectification circuit.The condenser type energy storage component comprises the polyester film core, and the polyester film core is outer around zinc paper tinsel layer, and zinc paper tinsel layer is outer around laminated polyester film, and laminated polyester film is outer around the insulating tape layer.The rear and front end of condenser type energy storage component is an epoxy resin layer.Condenser type energy storage component one end is electrically connected with AC power, and parallel resistance is electrically connected with rectification circuit again behind two electric capacity of other end elder generation series connection.
When alternating current when the condenser type energy storage component, the condenser type energy storage component gets up electrical power storage, flows to rectification circuit then, supplies with LED after electric current is become direct current.Parallel resistance is electrically connected with rectification circuit again behind two electric capacity of condenser type energy storage component elder generation series connection, and electric capacity can limit the output current of LED power supply.Parallel resistance between electric capacity; Because the waveform of alternating current be a sine wave, when sine wave when peak-peak is cut off constantly, the remaining electric charge on the electric capacity can't discharge; The president stored for a long time; If human body touches the metal section and part of electric capacity because of carelessness, strong electric shock possibility will be arranged, thereby and the existence of resistance can fall to guarantee safety with remaining charge discharging resisting.Insulating cement belt and epoxy resin layer not only have the waterproof insulation effect, and rapid heat dissipation, so can condenser type energy storage component seal protection be got up, can play heat radiation and insulating effect again.The electric current that this kind mode is exported is the low-frequency high-voltage low current; Can bring into play the light efficiency of LED60%-70%; The temperature of lamp inside and outside shell also can not surpass 60 degree, reach to need not to use the high power lamp pearl also can be with the brightness that promotes LED, so the user can select lower powered LED; Also can reach needed illuminating effect, reduce cost.Condenser type energy storage component, electric capacity, resistance and rectification circuit all can bear the high pressure of about 400V, if short circuit occurs or when getting shocked, also can not burn out the LED power supply.And the present invention is the output HIGH voltage low current, and the heating of power supply and LED is very low, can be applied on the lower powered LED.Therefore, the present invention can the output HIGH voltage low current, can not only improve the LED illuminating effect, has solved problems such as light decay and Gao Re simultaneously; And high pressure resistant, waterproof, anticreep, be not afraid of electric shock and be not afraid of instantaneous short circuit; Prolong the useful life of LED lamp pearl, simple in structure, cost is low.
In some embodiments, rectification circuit comprises full-wave bridge and electrochemical capacitor.Electrochemical capacitor is connected in parallel on the output of full-wave bridge.Thus, convert alternating current to unidirectional current through full-wave bridge after, via electrochemical capacitor filtering alternating component, obtain pure direct current.Simple in structure, cost is low.
In some embodiments, full-wave bridge comprises four diodes, and this diode head and the tail in twos is connected in parallel after connecting.Thus, just can form a rectifier bridge, utilize the unilateral conduction of diode, obtain a unidirectional electric current at output through four diodes.Simple in structure, cost is low.
In some embodiments, electric capacity is ceramic condenser.
Description of drawings
Fig. 1 is the sketch map of the LED power supply of one embodiment of the present invention.
Fig. 2 is the sectional view of Fig. 1 LED power supply along the A-A line.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further detailed explanation.
Fig. 1 and Fig. 2 have schematically shown the LED power supply according to one embodiment of the present invention.
This LED power supply comprises condenser type energy storage component 1 and rectification circuit 2.Condenser type energy storage component 1 comprises polyester film core 101, and polyester film core 101 is outer around zinc paper tinsel layer 102, and zinc paper tinsel layer 102 is outer around laminated polyester film 103, and laminated polyester film 103 is outer around insulating tape layer 104.The rear and front end of condenser type energy storage component is an epoxy resin layer 105.Condenser type energy storage component one end is electrically connected with AC power, and the other end circuit that earlier parallel resistance R1 forms behind series connection ceramic condenser C1 and the C2 is connected with rectification circuit electric 2 again.Rectification circuit 2 comprises electrochemical capacitor C3 and full-wave bridge 201.Electrochemical capacitor C3 is connected in parallel on the output of full-wave bridge 201.Full-wave bridge 201 comprises diode D1, D2, D3 and D4.D4 and D1 join end to end, and D3 and D2 join end to end, and are connected in parallel then.
As shown in Figure 1, U
iBe input voltage, U
0Be output voltage.Condenser type energy storage component 1 is used for store electrical energy.Ceramic condenser C1 and C2 can limit the output current of LED power supply.The waveform of alternating current is sinusoidal wave, when sine wave when peak-peak is cut off constantly, the remaining electric charge of ceramic condenser C1 and C2 can't discharge, the president stored for a long time, if human body touches the metal section and part of ceramic condenser C1 and C2 because of carelessness, the possibility of electric shock will be arranged.Resistance R 1 is connected in parallel between ceramic condenser C1 and the C2, thereby can ceramic condenser C1 and the last remaining charge discharging resisting of C2 be fallen to guarantee safety.Utilize the unilateral conduction of diode, when positive half cycle, diode D1 and D3 conducting obtain sinusoidal wave positive half cycle on load resistance; When negative half period, diode D2 and D4 conducting obtain sinusoidal wave negative half period on load resistance.On load resistance, positive-negative half-cycle obtains a unidirectional pulsating voltage and electric current through synthetic.Electrochemical capacitor C3 is connected in parallel on the output of full-wave bridge, further the alternating component in the filtering output current.
When alternating current when the condenser type energy storage component, condenser type energy storage component 1 gets up electrical power storage, flows to rectification circuit then, supplies with LED after electric current is become direct current.Can limit the output current of LED power supply through the size of control ceramic condenser C1 and C2.Resistance R 1 prevents that as bleeder resistance human body from getting an electric shock because of touching ceramic condenser C1 and C2.Insulating cement belt 104 and epoxy resin layer 105 not only have the waterproof insulation effect, and rapid heat dissipation, so can condenser type energy storage component 1 seal protection be got up, can play heat radiation and insulating effect again.The electric current that this kind mode is exported is the low-frequency high-voltage low current; Can bring into play the light efficiency of LED60%-70%; The temperature of lamp inside and outside shell also can not surpass 60 degree, reach to need not to use the high power lamp pearl also can be with the brightness that promotes LED, so the user can select lower powered LED; Also can reach needed illuminating effect, reduce cost.Condenser type energy storage component 1, ceramic condenser C1, ceramic condenser C2, electrochemical capacitor C3, resistance R 1 and full-wave bridge 201 all can be born the high pressure of about 400V, if short circuit occurs or when getting shocked, also can not burn out the LED power supply.And the present invention is the output HIGH voltage low current, and the heating of power supply and LED is very low, can be applied on the lower powered LED.Therefore, LED power supply of the present invention can the output HIGH voltage low current, can not only improve the LED illuminating effect, has solved problems such as light decay and Gao Re simultaneously; And high pressure resistant, waterproof, anticreep, be not afraid of electric shock and be not afraid of instantaneous short circuit; Prolong the useful life of LED lamp pearl, simple in structure, cost is low.
The above is merely preferred implementation of the present invention.For the person of ordinary skill of the art, under the prerequisite that does not break away from the invention design, can also make some distortion and improvement, all belong to protection scope of the present invention.
Claims (4)
1.LED power supply; Wherein, comprise condenser type energy storage component and rectification circuit, said condenser type energy storage component comprises the polyester film core; Said polyester film core is outer around zinc paper tinsel layer; Said zinc paper tinsel layer is outer around laminated polyester film, and said laminated polyester film is outer around the insulating tape layer, and the rear and front end of said condenser type energy storage component is an epoxy resin layer; Said condenser type energy storage component one end is electrically connected with AC power, and parallel resistance is electrically connected with rectification circuit again behind two electric capacity of other end elder generation series connection.
2. LED power supply according to claim 1, wherein, said rectification circuit comprises full-wave bridge and electrochemical capacitor, said electrochemical capacitor is connected in parallel on the output of full-wave bridge.
3. LED power supply according to claim 2, wherein, said full-wave bridge comprises four diodes, said diode head and the tail in twos is connected in parallel after connecting.
4. LED power supply according to claim 1, wherein, said electric capacity is ceramic condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210311105XA CN102790540A (en) | 2012-08-29 | 2012-08-29 | LED (Light-Emitting Diode) light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210311105XA CN102790540A (en) | 2012-08-29 | 2012-08-29 | LED (Light-Emitting Diode) light source |
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| CN102790540A true CN102790540A (en) | 2012-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210311105XA Pending CN102790540A (en) | 2012-08-29 | 2012-08-29 | LED (Light-Emitting Diode) light source |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11135274A (en) * | 1997-10-30 | 1999-05-21 | Toshiba Tec Corp | Led light system |
| CN2689425Y (en) * | 2004-04-02 | 2005-03-30 | 佛山市顺德区创格电子实业有限公司 | Metallized thin-membrane capacitors |
| WO2010143239A1 (en) * | 2009-06-09 | 2010-12-16 | ニッタ株式会社 | Direct-current power supply device and led lighting device |
| CN202018886U (en) * | 2010-12-27 | 2011-10-26 | 胡枝清 | Composite film medium filter capacitor |
| CN202737765U (en) * | 2012-08-29 | 2013-02-13 | 李蓉 | LED power supply |
-
2012
- 2012-08-29 CN CN201210311105XA patent/CN102790540A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11135274A (en) * | 1997-10-30 | 1999-05-21 | Toshiba Tec Corp | Led light system |
| CN2689425Y (en) * | 2004-04-02 | 2005-03-30 | 佛山市顺德区创格电子实业有限公司 | Metallized thin-membrane capacitors |
| WO2010143239A1 (en) * | 2009-06-09 | 2010-12-16 | ニッタ株式会社 | Direct-current power supply device and led lighting device |
| CN202018886U (en) * | 2010-12-27 | 2011-10-26 | 胡枝清 | Composite film medium filter capacitor |
| CN202737765U (en) * | 2012-08-29 | 2013-02-13 | 李蓉 | LED power supply |
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Application publication date: 20121121 |