CN201259191Y

CN201259191Y - Heat radiation reinforced LED illuminating apparatus

Info

Publication number: CN201259191Y
Application number: CNU2008200946795U
Authority: CN
Inventors: 魏俊敏
Original assignee: ATG ELECTRONICS CORP
Current assignee: High light Century (Tianjin) new energy Polytron Technologies Inc
Priority date: 2008-06-13
Filing date: 2008-06-13
Publication date: 2009-06-17
Anticipated expiration: 2018-06-13

Abstract

The utility model relates to a reinforced heat radiating type LED illuminating device which comprises a lampshade (1), a circuit board welded with a plurality of LEDs (2), and an aluminum alloy base (4). The lampshade (1) is buckled with the base (4); the circuit board (3) is an aluminum base circuit board; and the base (4) is provided with an internal bottom (41) for containing the circuit board (3). The aluminum base surface of the circuit board (3) is closely attached to the internal bottom (41) of the base (4); the outer surface of the base (4) is provided with a plurality of sheet-shaped heaves (42) which are used for radiating heat. The reinforced heat radiating type LED illuminating device has excellent heat radiating effect and the LED thereof has long service life; moreover, the LEDs with even and gentle mixed lights is more suitable for family use and also can protect eyes of users; and in addition, the reinforced heat radiating type LED illuminating device adopts a more simple power supplying method that the device can start to work by directly connecting commercial power, thereby being more convenient to users.

Description

Strengthened heat dissipation type LED illuminating device

[technical field]

The utility model relates to electric lighting device, and relating in particular to LED (light emitting diode) is the electric lighting device of strengthening radiating effect that has of illuminator.

[background technology]

LED (light emitting diode) is applied to the electric lighting technical field more and more widely because its life-span is long and energy consumption is low.

A kind of LED lighting device that family expenses fluorescent illumination modulated structure is arranged of prior art, a plurality of LED are welded on the circuit board, lampshade, base and two lamp socket side cover assemblings with glass or engineering plastics such as PC (Merlon) material are sealed, circuit board is located on the base, the bottom surface of circuit board and the inner surface of base have certain space, and adaptive power supply is arranged in the LED lighting device; Analyze from structure, because integral sealing causes the heating of LED to accumulate in LED lighting device the inside, the too high meeting of temperature reduces the service life of LED, strengthens light decay on the one hand; On the other hand, the user must reinstall power supply when in use, uses also inconvenient; Again on the one hand since single led be spot light, light is not added to handle, and feels not soft, user's eyes are fatigue easily.

China utility model patent ZL200310111977.2, a kind of LED lamp is disclosed, its fin (being base) contacts with this led light source plate (circuit board of LED promptly is housed), to realize the heat conduction, it does not disclose the structure of described fin, from figure, this kind structure has radiating effect, but radiating effect is not fine; And circuit board is medium-sized, and thermal conduction effect is poor.The lampshade of this LED lamp is a convex lens structures, makes its luminous intensity of having strengthened the led light source emission, and has expanded the light angle of departure of LED, thereby realizes remote illumination, and simultaneously, luminous intensity and illuminating area all are significantly increased, and make this LED lamp be applicable to Landscape Lighting; But the light of this LED lamp is more not soft, is not suitable for family expenses, the easier fatigue of user's eyes.

[utility model content]

The technical problems to be solved in the utility model is to avoid above-mentioned the deficiencies in the prior art part and a kind of strengthened heat dissipation type LED illuminating device is provided, use this LED lighting device, good heat dissipation effect, the long service life of LED, the LED even light mixing, light is soft, is more suitable for family expenses, and user's eyes are had protective effect; Power supply mode is simpler, directly inserts civil power and just can work, and is more user-friendly.

The technical scheme that the utility model solve the technical problem employing is:

A kind of strengthened heat dissipation type LED illuminating device is provided, comprises lampshade, be welded with the circuit board of a plurality of LED and the base of aluminum alloy material, this lampshade and base fasten; Circuit board is an aluminum-base printing circuit board, and described base has the inner bottom surface of a ccontaining described circuit board, and aluminium base the inner bottom surface with base of this circuit board is close to, and described base outer surface has many strip of sheet projection to be used for heat radiation.

For circuit board is contacted with base closely, apply one deck heat conductive silica gel on the inner bottom surface of described base, aluminium base of described circuit board is close to by this heat conductive silica gel and base inner bottom surface, and is screwed.

In order to make the LED even light mixing, light is soft, is more suitable for family expenses, the high-strength transparence engineering plastic PC injection moulding of protection user's eyes, described lampshade, and its inner face has tens of concave and convex stripes, uses so that ejaculation light is soft; The light that sends of LED like this through after the refraction repeatedly, is blended together, and launches to become even, soft again, and it is very comfortable that user's eyes can be felt.

Described a plurality of LED adopts and is electrically connected in series, and it is input as the bridge path rectification that civil power is formed through four diodes, makes power supply mode simpler like this, and the utility model strengthened heat dissipation type LED illuminating device only needs direct external civil power just can work;

Perhaps for the described LED lighting device of fluorescent illumination lamp tube structure, a plurality of LED adopt and are electrically connected in series, it is input as civil power through the doube bridge road rectifications that four diode D101～D104 forms of two covers, and the input of described doube bridge road rectification is connected electrically in respectively on the copper pin of LED lighting device two ends lamp socket side cover of described fluorescent illumination lamp tube structure.Adopt this design, four copper pins of the described LED lighting device of fluorescent illumination lamp tube structure are from two adding civil powers of any end, and the sense of current that flows through LED all is the same, more user-friendly.

So the user uses alternating voltage, frequency is generally 50/60Hz, the ripple frequency of voltage is 100Hz/120Hz behind bridge path rectification, each LED is driven by pulsating volage, because the LED that emits white light produces white light for the blue-light LED chip excitated fluorescent powder produces gold-tinted after gold-tinted and the blue light.Under pulsating volage drove, the luminous efficiency of fluorescent material can better be sent out brightness, and also can prolong the service life of LED.

For each LED of better protection is not impacted by high voltage and causes damage, Zener diode of reverse parallel connection again after per two to three series connection of described a plurality of LED; Even one of them LED damages and causes it to open circuit, Bing Lian Zener diode will be reversed avalanche breakdown with it, and conducting, thereby making entire circuit conducting again, other each LED will be influenced by it can not and can continue operate as normal.

Compare with prior art, the beneficial effects of the utility model are:

1, the utility model strengthened heat dissipation type LED illuminating device, because circuit board adopts the good aluminum-base printing circuit board of thermal conduction effect, and make this circuit board be close to the aluminium alloy base that outer surface has a plurality of strip of sheet projectioies, the caloric value of LED is distributed rapidly, thereby it is operated in the normal temperature range, the service life of LED corresponding the prolongation;

2, described lampshade inner face has tens of concave and convex stripes, and the light that makes LED send is blended together through repeatedly reflecting, and it is even, soft that the diffuse light of launching again just becomes, and it is very comfortable that user's eyes can be felt;

3, power supply mode is simpler, frequency is that the ripple frequency of city's voltage voltage behind bridge path rectification of 50/60Hz is 100Hz/120Hz, each LED is driven by pulsating volage, and the luminous efficiency of fluorescent material can better be sent out brightness in the LED, and also can prolong the service life of LED; Simultaneously more user-friendly;

4, Zener diode of reverse parallel connection again after per two to three series connection of described a plurality of LED has been protected LED not to be subjected to high-tension impact better and has been caused damage; Even one of them LED damages and causes it to open circuit, Bing Lian Zener diode will be reversed avalanche breakdown with it, and conducting, thereby making entire circuit conducting again, other each LED will be influenced by it can not and can continue operate as normal;

5, compare with common fluorescent lamp, adopt the low frequency type of drive to suppress EMC (electromagnetic interference) better; And entire circuit do not have perception and capacitive load basically, can suppress humorous wave interference better, and power factor is greater than 0.9.

[description of drawings]

Fig. 1 is the axonometric projection decomposing state schematic diagram of the utility model strengthened heat dissipation type LED illuminating device;

Fig. 2 is the front view of described LED lighting device;

Fig. 3 is the front view of base 4 among Fig. 1;

Fig. 4 is the cutaway view of A-A among Fig. 2;

Fig. 5 is the cutaway view of B-B among Fig. 3;

Fig. 6 is the cutaway view of lampshade cross section among Fig. 1;

Fig. 7 is the partial circuit figure that LED is connected with Zener diode among embodiment of described LED lighting device;

Fig. 8 is the circuit diagram of an embodiment of described LED lighting device;

Fig. 9 is the input terminal voltage oscillogram of an embodiment of described LED lighting device; Wherein abscissa is represented the time, and unit is a millisecond; The ordinate representative voltage, unit is a volt;

Figure 10 is the input terminal voltage oscillogram at light emitting diode two ends among embodiment of described LED lighting device; Wherein abscissa is represented the time, and unit is a millisecond; The ordinate representative voltage, unit is a volt;

Figure 11 is the circuit diagram of described another embodiment of LED lighting device;

Figure 12 is the rearview of base 4 among described another embodiment of LED lighting device.

[specific embodiment]

Below in conjunction with each accompanying drawing the utility model is described in further detail.

Referring to Fig. 1 to Fig. 5, the utility model relates to a kind of strengthened heat dissipation type LED illuminating device, comprises lampshade 1, is welded with the circuit board 3 of a plurality of light emitting diodes 2 and the base 4 of aluminum alloy material, and described lampshade 1 fastens with base 4; Described circuit board 3 is an aluminum-base printing circuit board, and described base 4 has the inner bottom surface 41 of a ccontaining described circuit board 3, and aluminium base the inner bottom surface 41 with base 4 of this circuit board 3 is close to, and described base 4 outer surfaces have many strip of sheet projection 42 to be used for heat radiation.

As an embodiment of the present utility model, as shown in Figure 1, lampshade 1, circuit board 3 and base 4 are strip, are assembled into profile and electric connection structure that described LED lighting device has the conventional fluorescent illuminating lamp tube; Circuit board 3 is fixed on the base 4, and lampshade 1 after fastening with base 4 is fastened the lamp socket side cover 6 that copper pin 5 is housed at lampshade 1 two with base 4.

As an embodiment of the present utility model, referring to Fig. 1, Fig. 4 to Fig. 6, described LED lighting device with conventional fluorescent illuminating lamp tube profile and electric connection structure, the outer surface both sides that described lampshade 1 cooperates with base 4 respectively have one rectangular protruding 14 and an adjacent rectangular groove 13; Respectively there are a rectangular groove 43 and adjacent one rectangular protruding 44 in the inner face both sides that described base 4 cooperates with lampshade 1; When described lampshade 1 fastened with base 4, the rectangular groove 43 of rectangular protruding 14 and base 4 of described lampshade 1 was adaptive, and the rectangular groove 13 of rectangular protruding 44 and lampshade 1 of described base 4 is adaptive, thereby described lampshade 1 and base 4 are fastened closely; Many strip of sheet projection 42 of described base 4 outer surfaces is parallel to each other, and many strip of sheet projection 42 is in picturesque disorder, and it highly is positioned at same circular arc.

For circuit board 3 is contacted with base 4 closely, as shown in Figure 1 and Figure 4, apply one deck heat conductive silica gel 9 on the inner bottom surface 41 of described base 4, aluminium base the inner bottom surface 41 by this heat conductive silica gel 9 and base 4 of described circuit board 3 is close to, and fixing with screw 8.

In order to make each LED even light mixing, light is soft, is more suitable for family expenses, protection user's eyes; As Fig. 4 and shown in Figure 6, described lampshade 1 usefulness high-strength transparence engineering plastic PC (Merlon) injection moulding, its inner face has tens of concave and convex stripes, uses so that ejaculation light is soft.The light that sends of light emitting diode 2 like this through after the refraction repeatedly, is blended together, and it is even, soft that the diffuse light of launching again just becomes, and it is very comfortable that user's eyes can be felt.

As shown in Figure 8, described a plurality of LED1......LED n adopt and are electrically connected in series, and it is input as the bridge path rectification rectification that civil power is formed through four diode D101～D104; The utility model strengthened heat dissipation type LED illuminating device only needs direct external civil power just can work.

As an embodiment of the present utility model, adopt the LED lighting device of fluorescent illumination lamp tube structure; As Fig. 1 and shown in Figure 8, described a plurality of LED1......LED n adopt and are electrically connected in series, and in the present embodiment, the voltage of LED is 3.2 volts～3.4 volts, n=80, and 80 LED have promptly connected; It is input as civil power through the doube bridge road rectification that four diode D101～D104 forms of two covers, the input of doube bridge road rectification is connected electrically on the copper pin 5 of LED lighting device two ends lamp socket side cover 6 of described fluorescent illumination modulated structure with conductor wire 7 respectively, copper pin 5 has four, each two at every end.Adopt this design, four copper pins of the described LED lighting device of fluorescent illumination lamp tube structure are from two adding civil powers of any end, and the sense of current that flows through LED all is the same, more user-friendly.Four diode D101～D104 of two covers are welded on the circuit board 3.

As Fig. 9 and shown in Figure 10, in the present embodiment, the voltage that the user uses is alternating voltage, frequency is generally 50/60Hz, the ripple frequency of voltage is 100Hz/120Hz behind bridge path rectification, each LED is driven by pulsating volage, because the LED that emits white light produces white light for the blue-light LED chip excitated fluorescent powder produces gold-tinted after gold-tinted and the blue light.Under pulsating volage drove, the luminous efficiency of fluorescent material can better be sent out brightness, and also can prolong the service life of LED.

For each LED of better protection is not impacted by high voltage and causes damage, Zener diode of reverse parallel connection again after per two to three series connection of described a plurality of LED.As shown in Figure 7, four LED1, LED2, LED3, LED4 are cascaded, and go back Zener diode ZD1 of reverse parallel connection between two LED1, LED2, go back Zener diode ZD2 of reverse parallel connection between two LED3, LED4; Even one of them LED damages and causes it to open circuit, Bing Lian Zener diode will be reversed avalanche breakdown with it, and conducting, thereby making entire circuit conducting again, other each LED will be influenced by it can not and can continue operate as normal.Each Zener diode all is welded on the circuit board 3.

As another embodiment of the present utility model, described a plurality of LED adopt and are electrically connected in series, its be input as civil power by rectification after again behind the PWM controller, making described LED go here and there the two ends input terminal voltage is two to 1/8th of city's voltage; Such as described LED string two ends input voltage is 1/3rd of city's voltage, and described LED string is that 30 LED are in series; Its physical circuit annexation is as follows:

Referring to Figure 11, civil power connects behind the thermistor PTC of positive temperature coefficient by rectifier bridge A1 rectification output DC, and the effect of thermistor PTC mainly is to prevent surge current, is parallel with capacitor C 1 and resistance R 1 between rectifier bridge A1 output V+ and V-; Be provided with PWM (Pulse Width Modulation in the IC 1, pulse width modulation) controller, the pin 5 of IC 1 meets output V+, four pin 7,8,1 of IC 1 are connected the back with 2 and meet output V-by diode D5, wherein the positive pole of diode D5 meets output V-, be connected to capacitor C 6 between two pin 1 of IC 1 and 3, be connected to the phototriode of photoelectrical coupler PHC1 inside between two pin 3 of IC 1 and 4, wherein the emitter stage of phototriode connects the pin 4 of IC 1; The positive pole of photoelectrical coupler PHC1 interior light emitting diodes meets output V-by the resistance R 2 and the R4 of two series connection, the negative pole of photoelectrical coupler PHC1 interior light emitting diodes connects the emitter stage of triode Q1, also be parallel with resistance R 3 between the positive pole of photoelectrical coupler PHC1 interior light emitting diodes and the negative pole, be connected between the negative pole and output V-of photoelectrical coupler PHC1 interior light emitting diodes after capacitor C 9 and the electrochemical capacitor C7 series connection, wherein the negative pole of electrochemical capacitor C7 meets output V-; Electrochemical capacitor C7 two ends also are parallel with electrochemical capacitor C8, and wherein the positive pole of electrochemical capacitor C8 connects the positive pole of electrochemical capacitor C7; Be connected to adjustable resistance TR1 between the base stage of triode Q1 and the colelctor electrode; The colelctor electrode of the positive pole of the link of resistance R 2 and R4 and electrochemical capacitor C8, C7 and triode Q1 links together; Inductance L 1 is connected between the colelctor electrode of the pin 1 of IC 1 and triode Q1; After forming the LED string, a plurality of LED 1～LED n series connection are connected between the emitter stage and output V-of triode Q1; In the present embodiment, the voltage of each LED is 3.2 volts～3.4 volts, n=30, and 30 LED have promptly connected.The model of rectifier bridge A1 is DB107; The model of IC 1 is LNK306; The model of photoelectrical coupler PHC1 is EL817; F1 among Figure 11 is a fusible link.Its operation principle is as follows:

The circuit of present embodiment is by the current signal on the photoelectrical coupler PHC1 sampling LED string, feed back in IC 1, through amplifying the PWM controller of giving in the IC 1, the PWM controller is according to the size of feedback signal, producing frequency is the PWM output signal of 66KHz different duty, discharges and recharges the electric current of controlling LED for inductance L 1 by the PWM controller.Reach the effect of constant current, regulate the size of current that needs setting by adjustable resistance TR1, among this embodiment, the electric current that LED is set is 100 milliamperes.

Also be connected to current follow-up circuit 31 between above-mentioned rectifier bridge A1 output V+ and the V-, this current follow-up circuit 31 comprises four electrochemical capacitor C2～C5 and three diode D2～D4; Be connected between rectifier bridge A1 output V+ and the V-after electrochemical capacitor C2 and the diode D2 series connection, wherein the positive pole of electrochemical capacitor C2 meets output V+, and the negative pole of electrochemical capacitor C2 connects the negative pole of diode D2; Electrochemical capacitor C2 two ends also are parallel with electrochemical capacitor C3, and wherein the positive pole of electrochemical capacitor C2 connects the positive pole of electrochemical capacitor C3; Be connected between rectification bridge output end V+ and the V-after diode D4 and the electrochemical capacitor C4 series connection, wherein the negative pole of diode D4 meets output V+, and the positive pole of electrochemical capacitor C4 connects the positive pole of diode D4; Electrochemical capacitor C4 two ends also are parallel with electrochemical capacitor C5, and wherein the positive pole of electrochemical capacitor C5 connects the positive pole of electrochemical capacitor C4; Also be in series with diode D3 between diode D2 and diode D4, wherein the positive pole of diode D3 connects the negative pole of diode D2, and the negative pole of diode D3 connects the positive pole of diode D4.Adopt current follow-up circuit 31, be convenient to improve power factor, and effectively suppress harmonic current.

Each electronic component of present embodiment can be welded on separately on another piece circuit board (not marking), referring to Figure 12, is provided with the breach 45 of ccontaining this circuit board at the outer surface of base 4, and this circuit board is fixed on the breach 45 of base 4 outer surfaces.

The above embodiment has only expressed preferred implementation of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim; Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model; Therefore, all equivalents and modifications of being done with the utility model claim scope all should belong to the covering scope of the utility model claim.

Claims

1. a strengthened heat dissipation type LED illuminating device comprises lampshade (1), is welded with the circuit board (3) of a plurality of LED (2) and the base (4) of aluminum alloy material, and described lampshade (1) fastens with described base (4); It is characterized in that:

Described circuit board (3) is an aluminum-base printing circuit board, described base (4) has the inner bottom surface (41) of a ccontaining described circuit board (3), aluminium base the inner bottom surface (41) with described base (4) of this circuit board (3) is close to, and described base (4) outer surface has many strip of sheet projection (42) to be used for heat radiation.

2. strengthened heat dissipation type LED illuminating device according to claim 1 is characterized in that:

Described base (4) inner bottom surface (41) go up to apply one deck heat conductive silica gel (9), and aluminium base of described circuit board (3) is close to by this heat conductive silica gel (9) and described base (4) inner bottom surface (41), and fixes with screw (8).

3. strengthened heat dissipation type LED illuminating device according to claim 1 is characterized in that:

Described lampshade (1) high-strength transparence engineering plastic PC injection moulding, its inner face has tens of concave and convex stripes (11), uses so that ejaculation light is soft.

4. according to each described strengthened heat dissipation type LED illuminating device of claim 1～3, it is characterized in that:

Described lampshade (1), circuit board (3) and base (4) are strip, are assembled into described LED lighting device, have the profile and the electric connection structure of conventional fluorescent illuminating lamp tube.

5. strengthened heat dissipation type LED illuminating device according to claim 4 is characterized in that:

Respectively there are a rectangular projection (14) and an adjacent rectangular groove (13) in the outer surface both sides that described lampshade (1) cooperates with described base (4); Respectively there are a rectangular groove (43) and an adjacent rectangular projection (44) in the inner face both sides that described base (4) cooperates with described lampshade (1); When described lampshade (1) fastens with described base (4), the rectangular projection (14) of described lampshade (1) is adaptive with the rectangular groove (43) of described base (4), the rectangular projection (44) of described base (4) is adaptive with the rectangular groove (13) of described lampshade (1), thereby described lampshade (1) and described base (4) are fastened closely; Many strip of sheet projection (42) of described base (4) outer surface is parallel to each other.

6. according to each described strengthened heat dissipation type LED illuminating device of claim 1～3, it is characterized in that:

Described a plurality of LED adopts and is electrically connected in series, and it is input as the bridge path rectification that civil power is formed through four diode D101～D104; Perhaps for the described LED lighting device of fluorescent illumination lamp tube structure, described a plurality of LED adopts and is electrically connected in series, its input is a civil power through the doube bridge road rectifications that four diode D101～D104 forms of two covers, and the input of described doube bridge road rectification is connected electrically in respectively on the copper pin (5) of LED lighting device two ends lamp socket side covers (6) of described fluorescent illumination lamp tube structure.

7. strengthened heat dissipation type LED illuminating device according to claim 6 is characterized in that:

Zener diode of reverse parallel connection again after per two to three series connection of described a plurality of LED.

8. according to each described strengthened heat dissipation type LED illuminating device of claim 1～3, it is characterized in that:

Described a plurality of LED adopts and is electrically connected in series, its be input as civil power by rectification again behind the PWM controller, making described LED go here and there the two ends input terminal voltage is two to 1/8th of civil power.

9. strengthened heat dissipation type LED illuminating device according to claim 8 is characterized in that:

Described LED string two ends are input as civil power by rectifier bridge A1 rectification output DC, are parallel with capacitor C 1 and resistance R 1 at described rectifier bridge A1 output (V+) with (V-); Be provided with described PWM controller in the IC 1, the pin of described IC 1 (5) connects described output (V+), four pin (7 of described IC 1,8,1 and 2) is connected the back and connects described output (V-) by diode D5, the positive pole of wherein said diode D5 connects this output (V-), two pin (1 of described IC 1,3) be connected to capacitor C 6 between, two pin (3 of described IC 1,4) be connected to the phototriode of photoelectrical coupler PHC1 inside between, the emitter stage of wherein said phototriode connects the pin (4) of this IC 1; The positive pole of described photoelectrical coupler PHC1 interior light emitting diodes connects described output (V-) by the resistance R 2 and the R4 of two series connection, the negative pole of described photoelectrical coupler PHC1 interior light emitting diodes connects the emitter stage of triode Q1, also be parallel with resistance R 3 between the positive pole of described photoelectrical coupler PHC1 interior light emitting diodes and the negative pole, be connected between the negative pole and output (V-) of described photoelectrical coupler PHC1 interior light emitting diodes after capacitor C 9 and the electrochemical capacitor C7 series connection, wherein the negative pole of electrochemical capacitor C7 connects output (V-); Electrochemical capacitor C7 two ends also are parallel with electrochemical capacitor C8, and the positive pole of wherein said electrochemical capacitor C8 connects the positive pole of described electrochemical capacitor C7; Be connected to adjustable resistance TR1 between the base stage of described triode Q1 and the colelctor electrode; The colelctor electrode anodal and described triode Q1 of the link of resistance R 2 and R4 and described two electrochemical capacitor C8, C7 links together; Inductance L 1 is connected between the colelctor electrode of the pin (1) of described IC 1 and described triode Q1; Described LED is serially connected between the emitter stage and output (V-) of described triode Q1.

10. strengthened heat dissipation type LED illuminating device according to claim 9 is characterized in that:

Described rectifier bridge A1 rectification output end (V+) and (V-) between also be connected to current follow-up circuit (31), described current follow-up circuit (31) comprises four electrochemical capacitor C2～C5 and three diode D2～D4; Be connected on after described electrochemical capacitor C2 and the diode D2 series connection described rectifier bridge A1 output (V+) and (V-) between, the positive pole of wherein said electrochemical capacitor C2 connects this output (V+), the negative pole of described electrochemical capacitor C2 connects the negative pole of this diode D2; Described electrochemical capacitor C2 two ends also are parallel with described electrochemical capacitor C3, and the positive pole of wherein said electrochemical capacitor C2 connects the positive pole of described electrochemical capacitor C3; Be connected on after described diode D4 and the electrochemical capacitor C4 series connection described rectification bridge output end (V+) and (V-) between, the negative pole of wherein said diode D4 connects described output (V+), the positive pole of described electrochemical capacitor C4 connects the positive pole of described diode D4; Described electrochemical capacitor C4 two ends also are parallel with described electrochemical capacitor C5, and the positive pole of wherein said electrochemical capacitor C5 connects the positive pole of described electrochemical capacitor C4; Also be in series with described diode D3 between described diode D2 and diode D4, the positive pole of wherein said diode D3 connects the negative pole of described diode D2, and the negative pole of described diode D3 connects the positive pole of described diode D4.