CN202737765U - LED power supply - Google Patents
LED power supply Download PDFInfo
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- CN202737765U CN202737765U CN 201220432573 CN201220432573U CN202737765U CN 202737765 U CN202737765 U CN 202737765U CN 201220432573 CN201220432573 CN 201220432573 CN 201220432573 U CN201220432573 U CN 201220432573U CN 202737765 U CN202737765 U CN 202737765U
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- power supply
- energy storage
- led
- polyester film
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Abstract
The utility model discloses an LED power supply which comprises a capacitive energy storage part and a rectification circuit. The capacitive energy storage part includes a polyester film core. A zinc foil layer is disposed outside the polyester film core. A polyester film layer is arranged outside the zinc foil layer. An insulating tape layer is arranged outside the polyester film layer. A front end and a rear end of the capacitive energy storage part are epoxy resin layers. One end of the capacitive energy storage part is electrically connected with an AC power supply, and the other end of the capacitive energy storage part is firstly in series connection with two capacitors, then is in parallel connection with a resistor and finally is electrically connected with the rectification circuit. The LED power supply is capable of outputting high voltage and low current, enables illumination effects of an LED to be enhanced, and helps to solve problems of light decay and high heating. Moreover, the LED power supply is resistant to high tension, is waterproof and anti-creeping, is resistant to electric shock and instant short circuit, enables the service life of a lamp bead of the LED to be prolonged, and is simple in structure and low in cost.
Description
Technical field
The utility model relates to a kind of power supply, relates in particular to a kind of LED power supply.
Background technology
LED need of work access direct current is so supply with LED after needing in actual use alternating current with 220V to transfer direct current to.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 since high electric current so that power supply and LED heating is serious.LED is more bright then must to strengthen electric current if make, and strengthens electric current, and LED can be warmmer, and the power supply body is also warmmer simultaneously.Can produce light decay, the easier fault of power supply if therefore heat radiation is bad.High electric current causes the circuit heating serious, most of electric energy conversion has become heat energy, cause LED luminous efficiency not high (only reaching 20%-30% efficient), the last producer choice for use high-capacity LED of having to, not only strengthened cost, and the high-capacity LED caloric value is large, causes in the lamp and the high heat problem of shell (temperature is about 63 degree-70 degree).Except the lamp pearl life-span short and light decay greatly, can not go to touch it because high thermal man's hand is more complete.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 the speed that quickening lamp pearl is burnt, also can produce the electromagnetic wave of harmful to human.
The utility model content
The purpose of this utility model is to provide a kind of novel LED power supply.
According to one side of the present utility model, a kind of LED power supply is provided, comprise 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 epoxy resin layer.Condenser type energy storage component one end is electrically connected with AC power, and the other end is connected first, and parallel resistance is electrically connected with rectification circuit again behind two electric capacity.
When alternating current when the condenser type energy storage component, the condenser type energy storage component gets up electrical power storage, then flows to rectification circuit, supplies with LED after electric current is become direct current.The condenser type energy storage component is connected first, and parallel resistance is electrically connected with rectification circuit again behind two electric capacity, and electric capacity can limit the output current of LED power supply.Parallel resistance between electric capacity, because the waveform of alternating current is sinusoidal wave, when sine wave when peak-peak is cut off constantly, remaining electric charge on the electric capacity can't discharge, the president stored for a long time, if human body touches the metal 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 condenser type energy storage component seal protection can be got up, can play again heat radiation and insulating effect.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 can not surpass 60 degree yet, reach and need not to use the high power lamp pearl also can will promote the brightness of LED, therefore 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 utility model 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 utility model can the output HIGH voltage low current, can not only improve the LED illuminating effect, has solved simultaneously the problems such as light decay and Gao Re, 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 by 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 in twos head and the tail is connected in parallel after connecting.Thus, just can form a rectifier bridge by four diodes, utilize the unilateral conduction of diode, obtain a unidirectional electric current at output.Simple in structure, cost is low.
In some embodiments, electric capacity is ceramic condenser.
Description of drawings
Fig. 1 is the schematic diagram of the LED power supply of a kind of execution mode of the present utility model.
Fig. 2 is that Fig. 1 LED power supply is along the sectional view of A-A line.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 and Fig. 2 have schematically shown the LED power supply according to a kind of execution mode of the present utility model.
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 epoxy resin layer 105.Condenser type energy storage component one end is electrically connected with AC power, and the other end ceramic condenser C1 that connects first is connected the circuit that parallel resistance R1 forms and is connected with rectification circuit electricity 2 with C2.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 then are connected in parallel.
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 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 ceramic condenser C1 and the upper remaining charge discharging resisting of C2 can be fallen guarantee safety.Utilize the unilateral conduction of diode, when positive half cycle, diode D1 and D3 conducting obtain sinusoidal wave positive half cycle at load resistance; When negative half period, diode D2 and D4 conducting obtain sinusoidal wave negative half period at 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, then flows to rectification circuit, supplies with LED after electric current is become direct current.Can limit the output current of LED power supply by 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 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 condenser type energy storage component 1 seal protection can be got up, can play again heat radiation and insulating effect.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 can not surpass 60 degree yet, reach and need not to use the high power lamp pearl also can will promote the brightness of LED, therefore 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 utility model 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 utility model can the output HIGH voltage low current, can not only improve the LED illuminating effect, solved simultaneously the problems such as light decay and Gao Re, 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 only is preferred implementation of the present utility model.For the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model creation design, can also make some distortion and improvement, all belong to protection range of the present utility model.
Claims (4)
1.LED power supply, it is characterized in that, comprise condenser type energy storage component and rectification circuit, described condenser type energy storage component comprises the polyester film core, described polyester film core is outer around zinc paper tinsel layer, described zinc paper tinsel layer is outer around laminated polyester film, described laminated polyester film is outer around the insulating tape layer, the rear and front end of described condenser type energy storage component is epoxy resin layer, described condenser type energy storage component one end is electrically connected with AC power, and the other end is connected first, and parallel resistance is electrically connected with rectification circuit again behind two electric capacity.
2. LED power supply according to claim 1 is characterized in that, described rectification circuit comprises full-wave bridge and electrochemical capacitor, and described electrochemical capacitor is connected in parallel on the output of full-wave bridge.
3. LED power supply according to claim 2 is characterized in that, described full-wave bridge comprises four diodes, and described diode in twos head and the tail is connected in parallel after connecting.
4. LED power supply according to claim 1 is characterized in that, described electric capacity is ceramic condenser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220432573 CN202737765U (en) | 2012-08-29 | 2012-08-29 | LED power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220432573 CN202737765U (en) | 2012-08-29 | 2012-08-29 | LED power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202737765U true CN202737765U (en) | 2013-02-13 |
Family
ID=47663423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220432573 Expired - Fee Related CN202737765U (en) | 2012-08-29 | 2012-08-29 | LED power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202737765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790540A (en) * | 2012-08-29 | 2012-11-21 | 李蓉 | LED (Light-Emitting Diode) light source |
-
2012
- 2012-08-29 CN CN 201220432573 patent/CN202737765U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790540A (en) * | 2012-08-29 | 2012-11-21 | 李蓉 | LED (Light-Emitting Diode) light source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20140829 |
|
| EXPY | Termination of patent right or utility model |