CN201992438U - High light extraction efficiency LED (light-emitting diode) bulb - Google Patents
High light extraction efficiency LED (light-emitting diode) bulb Download PDFInfo
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- CN201992438U CN201992438U CN2011201093630U CN201120109363U CN201992438U CN 201992438 U CN201992438 U CN 201992438U CN 2011201093630 U CN2011201093630 U CN 2011201093630U CN 201120109363 U CN201120109363 U CN 201120109363U CN 201992438 U CN201992438 U CN 201992438U
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- high light
- bulb
- emitting rate
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- rate led
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
A high light extraction efficiency LED bulb comprises a bulb cap, a bulb shell, an LED driver and a bulb cover, wherein the bulb cap is connected with the upper end of the bulb shell, the LED driver is mounted in the bulb shell, the lower end of the bulb shell is connected with the bulb cover, the LED spherical bulb also comprises a transparent light column with high heat-conducting property, the transparent light column is positioned in the bulb cover, the top of the transparent light column is connected with the lower end of the bulb shell, high light extraction efficiency LED light bars are mounted on the transparent light column, each high light extraction efficiency LED light bar comprises a plurality of LED chips which are sequentially connected in series, and transparent or translucent high heat conductivity filling is filled in the cavity between the outer side of the transparent light column and the bulb cover. The LED bulb provided by the utility model has the advantages of higher light extraction efficiency and higher heat dispersion.
Description
Technical field
The utility model relates to a kind of LED bulb.
Background technology
Existing LED bulb, led chip is installed on substrate bottom surface usually, the LED substrate adopts the good material of heat conductivility usually, described substrate is provided with electric power connection interface, described electric power connection interface is electrically connected with electric power connection line, and described substrate is provided with printed circuit, a plurality of led chips of arranged on the described substrate, described led chip comprises current-limiting resistance and voltage-stablizer, and described current-limiting resistance all is connected with described printed circuit with voltage-stablizer.
Because the light that sends of led chip is dispersed downwards, its range of exposures be substrate with the lower part, promptly realize 2 π bright dippings, part light shines the bottom surface of substrate, has reduced the light emission rate of led light source, in addition, is provided with because whole base plate is the plane, heat dispersion is relatively poor.
Summary of the invention
In order to overcome the deficiency that light emission rate is lower, heat dispersion is relatively poor of existing LED lamp, the utility model provides a kind of high light-emitting rate LED bulb that promotes light emission rate, strengthens heat dispersion.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of high light-emitting rate LED bulb, comprise lamp holder, lamp housing, led driver and bulb shield, described lamp holder is connected with the lamp housing upper end, described led driver is installed in the described lamp housing, described lamp housing lower end is connected with bulb shield, described LED bulb also comprises the transparent lamppost of high thermal conductivity, described transparent lamppost is positioned at described bulb shield, the top of described transparent lamppost is connected with described lamp housing lower end, described high light-emitting rate LED lamp bar is installed on the described transparent lamppost, described high light-emitting rate LED lamp bar comprises a plurality of led chips of series connection successively, fills transparent or semitransparent high-termal conductivity filler in the cavity between the outside of described transparent lamppost and the described bulb shield.
Transparent or semitransparent high-termal conductivity filler in the utility model, can select transparent high thermal conductivity material or translucent high conduction material, the transparent or semitransparent pottery of aluminium nitride for example, as long as the light that described high light-emitting rate LED lamp bar sends can be transmitted, certainly, also can adopt the transparent or semitransparent high-termal conductivity material of other materials.
High-termal conductivity filler in the utility model can be full of the outside of described transparent lamppost and the cavity between the described bulb shield, also can be local the filling; Situation for the part filling, require upwards to fill from the bottom of bulb shield earlier, at least filler contacts with the bottom surface of described transparent lamppost, preferred scheme is that filler contacts simultaneously with the side all around of described transparent lamppost simultaneously, and this structure can in time be dispersed the heat that described high light-emitting rate LED lamp bar produces by filler.
In the utility model, filler and bulb shield can be one, and promptly bulb shield adopts identical transparent or semitransparent highly heat-conductive material with filler, and incorporate structure is convenient to processing; Certainly, also can be separate version.
Buckle-type is connected between the upper end of transparent lamppost and the described lamp housing, certainly, also can adopt other connected modes.
Further, the side of described transparent lamppost has vertical groove, and the high light-emitting rate LED lamp bar is installed in the described vertical groove.
Described transparent lamppost can be solid construction, also can be hollow-core construction, perhaps is Openworks shape; Certainly, also can adopt other versions.
Or: described transparent lamppost is stairstepping, the lower section of described transparent lamppost is littler than top cross section, the place has annular groove at step, the high light-emitting rate LED lamp bar is installed in the described annular groove, when described step has when a plurality of, can on a plurality of steps, arrange many high light-emitting rate LED lamp bars respectively.Certainly, also can adopt other assembling mode.
The bottom surface of described transparent lamppost has annular groove, and the high light-emitting rate LED lamp bar is installed in the described annular groove.Belong to white or other colors for bulb shield, if have only the high light-emitting rate LED lamp bar of vertical layout, then be easy to generate shade in the bottom of bulb shield, add the high light-emitting rate LED lamp bar in the bottom surface of lamppost, not only can increase luminous power, also can effectively eliminate the shade of bulb shield bottom; Certainly, if adopt transparent bulb shield,, can on bulb shield, not produce shade even if the high light-emitting rate LED lamp bar then is not set yet.
Light source in the described high light-emitting rate LED lamp bar is towards the outside of described vertical groove.Comparatively speaking, in the high light-emitting rate LED lamp bar, led chip comprises transparency carrier and light source, and transparency carrier and light source all are coated in the transparent silica gel, wherein the light that sends of light source to around disperse, for the heat that produces, comparatively speaking, the heat of light source place direction is more, therefore, light source is installed towards groove is outside, helped more heat is delivered to transparent or semitransparent high-termal conductivity filler, be convenient to realize good heat radiation; Certainly, also can adopt other mounting means, for example adopt the mounting means of light source towards the bottom of described vertical groove.
Light source in the described high light-emitting rate LED lamp bar is towards the outside of described annular groove.Its radiating principle is identical with the high light-emitting rate LED lamp bar; Certainly, also can adopt other mounting means, for example adopt the mounting means of light source towards the bottom of described vertical groove.
The size of described high light-emitting rate LED lamp bar and described vertical groove or annular groove coupling.Be about to described high light-emitting rate LED lamp bar and just be nested in the groove, this structure is convenient to the processing of transparent or semitransparent high heat-conducting filler.
The end face of described transparent lamppost is installed reflector, and this reflector can converge the light of upwards dispersing downwards, can further promote luminous efficiency.
The radiating block of high thermal conductivity is installed on the end face of described transparent lamppost, and the outer wall of described radiating block is connected with the inwall of described lamp housing.By radiating block is set, can play good auxiliary heat dissipation effect.Further, described radiating block and described transparent lamppost are one.Certainly, radiating block and transparent lamppost also can be mutual independent structures, as long as both are fixed together.
The drive circuit of described led driver comprises first electric capacity, first resistance, rectification circuit, filter capacitor and second resistance, the civil power incoming end is connected with described first electric capacity, described first resistance and the first electric capacity parallel connection, the other end of described first electric capacity is connected with the input side of described rectification circuit, the two ends of the outlet side of described rectification circuit are connected with filter capacitor, described second resistance is in parallel with described filter capacitor, and the two ends of described filter capacitor are connected with two drive circuit output interfaces.
The drive circuit of described led driver comprises first electric capacity, first resistance, rectification circuit, filter capacitor, second resistance and power factor promote circuit, the civil power incoming end is connected with described first electric capacity, described first resistance and the first electric capacity parallel connection, the other end of described first electric capacity is connected with the input side of described rectification circuit, the positive terminal of the outlet side of described rectification circuit is connected with second resistance, one end and filter capacitor are anodal simultaneously, the negative pole end of the outlet side of described rectification circuit connects with the described second resistance other end, described power factor promotes circuit and comprises second diode, the 3rd diode, the 4th diode and auxiliary filter capacitor, the negative pole of described filter capacitor is connected with the backward end of second diode and the forward end of the 3rd diode simultaneously, the forward end of described second diode is connected with the negative pole end of the outlet side of described rectification circuit, the positive terminal of the outlet side of described rectification circuit is connected with the backward end of the 4th diode, the backward end while of described the 3rd diode and the forward end of the 4th diode, the positive pole of auxiliary filter capacitor connects, the negative pole of described auxiliary filter capacitor is connected with the negative pole end of the outlet side of described rectification circuit, and the described second resistance two ends are connected with two drive circuit output interfaces.
One end of described filter capacitor connects current-limiting resistance, and described current-limiting resistance is connected the bridge rectifier of described rectification circuit with a drive circuit output interface.
The bottom transverse section ratio top cross section of described transparent lamppost is little.Certainly, also can adopt prismatic version.
The cross section of described transparent lamppost is rounded, square, rhombus or ellipse.Certainly, also can adopt other shapes.
Can arrange a high light-emitting rate LED lamp bar in the side of described transparent lamppost, also can arrange two or two above high light-emitting rate LED lamp bars, two or two above high light-emitting rate LED lamp bars are uniformly-spaced arranged.
The beneficial effects of the utility model mainly show: 1, improve light utilization efficiency, promote heat dispersion; 2, owing to avoid adopting transformer, simplified the circuit composition, the no higher-order of oscillation, electromagnetic-radiation-free have reduced energy consumption, have improved power supply conversion efficiency simultaneously; 3, adopt current-limiting resistance, when supply voltage generation unusual fluctuations, effectively reduce the operating current of LED lamp, play the effect of protection LED; 4, add the power factor of forming by three diodes and the 3rd electric capacity and promote circuit, can effectively adapt to the High Power Factor occasion.
Description of drawings
Fig. 1 is the schematic diagram of first kind of high light-emitting rate LED bulb.
Fig. 2 is the schematic diagram of second kind of high light-emitting rate LED bulb.
Fig. 3 is the schematic diagram of the third high light-emitting rate LED bulb.
Fig. 4 is the schematic cross-section of Fig. 3.
Fig. 5 is the schematic diagram of the 4th kind of high light-emitting rate LED bulb.
Fig. 6 is the schematic diagram of the 5th kind of high light-emitting rate LED bulb.
Fig. 7 is a kind of schematic diagram of drive circuit.
Fig. 8 is the schematic diagram of another kind of drive circuit.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1～Fig. 8, a kind of high light-emitting rate LED bulb, comprise lamp holder 1, lamp housing 2, led driver 6 and bulb shield 5, described lamp holder 1 is connected with lamp housing 2 upper ends, in the described lamp housing 2 described led driver 6 is installed, described lamp housing 2 lower ends are connected with bulb shield 5, described LED bulb also comprises the transparent lamppost 3 of high thermal conductivity, described transparent lamppost 3 is positioned at described bulb shield 5, the top of described transparent lamppost 3 is connected with described lamp housing 2 lower ends, described high light-emitting rate LED lamp bar 4 is installed on the described transparent lamppost 3, described high light-emitting rate LED lamp bar 4 comprises a plurality of led chips of series connection successively, fills transparent or semitransparent high-termal conductivity filler in the cavity between the outside of described transparent lamppost 3 and the described bulb shield 5.
Transparent or semitransparent high-termal conductivity filler in the present embodiment, can select transparent high thermal conductivity material or translucent high conduction material, the transparent or semitransparent pottery of aluminium nitride for example, as long as can transmit with stating the light that high light-emitting rate LED lamp bar 4 sends, certainly, also can adopt the transparent or semitransparent high-termal conductivity material of other materials.
High-termal conductivity filler in the utility model can be full of the outside of described transparent lamppost and the cavity between the described bulb shield, also can be local the filling; Situation for the part filling, require upwards to fill from the bottom of bulb shield earlier, at least filler contacts with the bottom surface of described transparent lamppost, preferred scheme is that filler contacts simultaneously with the side all around of described transparent lamppost simultaneously, and this structure can in time be dispersed the heat that described high light-emitting rate LED lamp bar produces by filler.
In the utility model, filler and bulb shield can be one, and promptly bulb shield adopts identical transparent or semitransparent highly heat-conductive material with filler, and incorporate structure is convenient to processing; Certainly, also can be separate version.
Buckle-type is connected between the upper end of transparent lamppost and the described lamp housing, certainly, also can adopt other connected modes.
The side of described transparent lamppost 3 has vertical groove, and high light-emitting rate LED lamp bar 4 is installed in the described vertical groove; Or: described transparent lamppost 3 is stairstepping, the lower section of described transparent lamppost 3 is littler than top cross section, the place has annular groove at step, and high light-emitting rate LED lamp bar 4 is installed in the described annular groove, and described high light-emitting rate LED lamp bar 4 comprises a plurality of led chips of series connection successively.Certainly, also can adopt other assembling mode.
Described transparent lamppost 3 can be solid construction, also can be hollow-core construction, perhaps is Openworks shape; Certainly, also can adopt other versions.
The bottom surface of described transparent lamppost 3 has annular groove, and high light-emitting rate LED lamp bar 4 is installed in the described annular groove.Belong to white or other colors for bulb shield 5, if have only the high light-emitting rate LED lamp bar of vertical layout, then be easy to generate shade in the bottom of bulb shield, add the high light-emitting rate LED lamp bar in the bottom surface of lamppost, not only can increase luminous power, also can effectively eliminate the shade of bulb shield bottom; Certainly, if adopt transparent bulb shield,, can on bulb shield, not produce shade even if the high light-emitting rate LED lamp bar then is not set yet.
Light source in the described high light-emitting rate LED lamp bar 4 is towards the outside of described vertical groove.Comparatively speaking, in the high light-emitting rate LED lamp bar, led chip comprises transparency carrier and light source, and transparency carrier and light source all are coated in the transparent silica gel, wherein the light that sends of light source to around disperse, for the heat that produces, comparatively speaking, the heat of light source place direction is more, therefore, light source is installed towards groove is outside, helped more heat is delivered to transparent or semitransparent high-termal conductivity filler, be convenient to realize good heat radiation; Certainly, also can adopt other mounting means, for example adopt the mounting means of light source towards the bottom of described vertical groove.
Light source in the described high light-emitting rate LED lamp bar 4 is towards the outside of described annular groove.Its radiating principle is identical with the high light-emitting rate LED lamp bar; Certainly, also can adopt other mounting means, for example adopt the mounting means of light source towards the bottom of described vertical groove.
The size of described high light-emitting rate LED lamp bar 4 and described vertical groove or annular groove coupling.Be about to described high light-emitting rate LED lamp bar and just be nested in the groove, this structure is convenient to the processing of transparent or semitransparent high heat-conducting filler.
The end face of described transparent lamppost 3 is installed reflector 7, and this reflector 7 can converge the light of upwards dispersing downwards, can further promote luminous efficiency.
The radiating block 8 of high thermal conductivity is installed on the end face of described transparent lamppost 3, and the outer wall of described radiating block 8 is connected with the inwall of described lamp housing 2.By radiating block 8 is set, can play good auxiliary heat dissipation effect.Further, described radiating block and described transparent lamppost are one.Certainly, radiating block and transparent lamppost also can be mutual independent structures, as long as both are fixed together.
Described lamp housing 2 adopts the high thermal conductivity material, and the wall of the bottom of described lamp housing 2 is thicker than the wall on top, and this structure helps heat radiation.Certainly, lamp housing 2 also can adopt the wall uniform thickness, perhaps other modes.
The cross section of described lamp housing 2 is rounded, square, rhombus, ellipse or regular polygon.Certainly, also can adopt other shapes.
The bottom transverse section ratio top cross section of described transparent lamppost 3 is little.Certainly, also can adopt prismatic version.
The cross section of described transparent lamppost 3 is rounded, square, rhombus or ellipse.Certainly, also can adopt other shapes.Can arrange a high light-emitting rate LED lamp bar in the side of described transparent lamppost 3, also can arrange two or two above high light-emitting rate LED lamp bars, two or two above high light-emitting rate LED lamp bars are uniformly-spaced arranged.
The bulb shield of present embodiment is 5 rounded, square, rhombus or ellipse.Certainly, also can adopt other shapes.With reference to Fig. 3, bulb shield is elongated, and with reference to Fig. 4, bulb shield is a rectangle, and the two ends of bulb shield are equipped with the structure of lamp housing and lamp holder.
With reference to Fig. 7, the drive circuit of led driver 6, comprise first capacitor C 1, first resistance R 1, rectification circuit D1, filter capacitor C2 and second resistance R 2, the civil power incoming end is connected with described first capacitor C 1, described first resistance R 1 and 1 parallel connection of first capacitor C, the other end of described first capacitor C 1 is connected with the input side of described rectification circuit D1, the two ends of the outlet side of described rectification circuit D1 are connected with filter capacitor C2, described second resistance R 2 is in parallel with described filter capacitor C2, and the two ends of described filter capacitor C2 are connected with two drive circuit output interfaces.
The end of described filter capacitor C2 connects current-limiting resistance R3, and described current-limiting resistance R3 is connected with a drive circuit output interface.Described rectification circuit D1 is a bridge rectifier.Certainly, also can select for use other rectification circuits commonly used to realize.
In the present embodiment, with respect to prior art, do not adopt IC chip and transformer, adopt the capacitance-resistance mode to come step-down, obtain dc source by rectifying and wave-filtering again after the step-down, this dc source provides little electric current high-voltage LED lamp to drive, and existing do not have high-frequency agitation source for available circuit, thereby do not have high frequency radiation, the required voltage and current parameter of led light source work is adjusted by the capacitance numerical value in the circuit (first capacitor C 1); Preferably, the output of power supply is through series resistance current limliting rear drive led light source.
With reference to Fig. 8, led driver 6 comprise first capacitor C 1, first resistance R 1, rectification circuit D1, the filter capacitor C2 and second resistance R 2, the civil power incoming end is connected with described first capacitor C 1, described first resistance R 1 and 1 parallel connection of first capacitor C, the other end of described first capacitor C 1 is connected with the input side of described rectification circuit D1, the positive terminal of the outlet side of described rectification circuit D1 is connected with second resistance R, 2 one ends and second capacitor C, 2 positive poles simultaneously, the negative pole end of the outlet side of described rectification circuit D1 is connected with described second resistance R, 2 other ends, described power factor promotes circuit and comprises the second diode D2, the 3rd diode D3, the 4th diode D4 and auxiliary filter capacitor C3, the negative pole of described filter capacitor C2 is connected with the backward end of the second diode D2 and the forward end of the 3rd diode D3 simultaneously, the forward end of the described second diode D2 is connected with the negative pole end of the outlet side of described rectification circuit, the positive terminal of the outlet side of described rectification circuit D1 is connected with the backward end of the 4th diode D4, the backward end while of described the 3rd diode D3 and the forward end of the 4th diode D4, the positive pole of auxiliary filter capacitor C3 connects, the negative pole of described auxiliary filter capacitor C3 is connected with the negative pole end of the outlet side of described rectification circuit, and described second resistance R 2 two ends are connected with two drive circuit output interfaces.
Described rectification circuit D1 is a bridge rectifier.Certainly, also can select for use other rectification circuits commonly used to realize.
In the present embodiment, set diode and comprise forward end and backward end, when electric current passes through diode, flow through to backward end from forward end.
In the present embodiment, with respect to prior art, do not adopt IC chip and transformer, adopt the capacitance-resistance mode to come step-down, obtain dc source by rectifying and wave-filtering again after the step-down, this dc source provides little electric current high-voltage LED lamp to drive, and existing do not have high-frequency agitation source for available circuit, thereby do not have high frequency radiation, the required voltage and current parameter of led light source work is adjusted by the capacitance numerical value in the circuit (first capacitor C 1); Preferably, the direct driving LED light source of the output of power supply.
Adopt power factor to promote circuit, can improve the power factor of whole LED lamp drive circuit, effectively satisfying the light source power factor is the High Power Factor occasion.
The described content of the embodiment of this specification only is enumerating the way of realization of utility model design; protection domain of the present utility model should not be regarded as only limiting to the concrete form that embodiment states, protection domain of the present utility model also reach in those skilled in the art according to the utility model design the equivalent technologies means that can expect.
Claims (10)
1. high light-emitting rate LED bulb, comprise lamp holder, lamp housing, led driver and bulb shield, described lamp holder is connected with the lamp housing upper end, described led driver is installed in the described lamp housing, described lamp housing lower end is connected with bulb shield, it is characterized in that: described LED bulb also comprises the transparent lamppost of high thermal conductivity, described transparent lamppost is positioned at described bulb shield, the top of described transparent lamppost is connected with described lamp housing lower end, described high light-emitting rate LED lamp bar is installed on the described transparent lamppost, described high light-emitting rate LED lamp bar comprises a plurality of led chips of series connection successively, fills transparent or semitransparent high-termal conductivity filler in the cavity between the outside of described transparent lamppost and the described bulb shield.
2. high light-emitting rate LED bulb as claimed in claim 1 is characterized in that: the side of described transparent lamppost has vertical groove, and described high light-emitting rate LED lamp bar is installed in the described vertical groove.
3. high light-emitting rate LED bulb as claimed in claim 1 is characterized in that: described transparent lamppost is stairstepping, and the lower section of described transparent lamppost is littler than top cross section, and the place has annular groove at step, and the high light-emitting rate LED lamp bar is installed in the described annular groove.
4. as the described high light-emitting rate LED bulb of one of claim 1～3, it is characterized in that: described transparent or semitransparent high-termal conductivity filler and bulb shield are one.
5. high light-emitting rate LED bulb as claimed in claim 2, it is characterized in that: the bottom surface of described transparent lamppost has annular groove, the high light-emitting rate LED lamp bar is installed in the described annular groove, and the light source of described high light-emitting rate LED lamp bar is towards the outside of described vertical groove and annular groove.
6. high light-emitting rate LED bulb as claimed in claim 4 is characterized in that: the size of described high light-emitting rate LED lamp bar and described vertical groove or annular groove coupling.
7. as the described high light-emitting rate LED bulb of one of claim 1～3, it is characterized in that: the end face of described transparent lamppost is installed reflector.
8. as the described high light-emitting rate LED bulb of one of claim 1～3, it is characterized in that: the radiating block of high thermal conductivity is installed on the end face of described transparent lamppost, and the outer wall of described radiating block is connected with the inwall of described lamp housing.
9. as the described high light-emitting rate LED bulb of one of claim 1～3, it is characterized in that: the drive circuit of described led driver comprises first electric capacity, first resistance, rectification circuit, the filter capacitor and second resistance, the civil power incoming end is connected with described first electric capacity, described first resistance and the first electric capacity parallel connection, the other end of described first electric capacity is connected with the input side of described rectification circuit, the two ends of the outlet side of described rectification circuit are connected with filter capacitor, described second resistance is in parallel with described filter capacitor, and the two ends of described filter capacitor are connected with two drive circuit output interfaces.
10. as the described high light-emitting rate LED bulb of one of claim 1～3, it is characterized in that: the drive circuit of described led driver comprises first electric capacity, first resistance, rectification circuit, filter capacitor, second resistance and power factor promote circuit, the civil power incoming end is connected with described first electric capacity, described first resistance and the first electric capacity parallel connection, the other end of described first electric capacity is connected with the input side of described rectification circuit, the positive terminal of the outlet side of described rectification circuit is connected with second resistance, one end and filter capacitor are anodal simultaneously, the negative pole end of the outlet side of described rectification circuit connects with the described second resistance other end, described power factor promotes circuit and comprises second diode, the 3rd diode, the 4th diode and auxiliary filter capacitor, the negative pole of described filter capacitor is connected with the backward end of second diode and the forward end of the 3rd diode simultaneously, the forward end of described second diode is connected with the negative pole end of the outlet side of described rectification circuit, the positive terminal of the outlet side of described rectification circuit is connected with the backward end of the 4th diode, the backward end while of described the 3rd diode and the forward end of the 4th diode, the positive pole of auxiliary filter capacitor connects, the negative pole of described auxiliary filter capacitor is connected with the negative pole end of the outlet side of described rectification circuit, and the described second resistance two ends are connected with two drive circuit output interfaces; One end of described filter capacitor connects current-limiting resistance, and described current-limiting resistance is connected the bridge rectifier of described rectification circuit with a drive circuit output interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201093630U CN201992438U (en) | 2011-04-14 | 2011-04-14 | High light extraction efficiency LED (light-emitting diode) bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201093630U CN201992438U (en) | 2011-04-14 | 2011-04-14 | High light extraction efficiency LED (light-emitting diode) bulb |
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| CN201992438U true CN201992438U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201093630U Expired - Fee Related CN201992438U (en) | 2011-04-14 | 2011-04-14 | High light extraction efficiency LED (light-emitting diode) bulb |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155665A (en) * | 2011-04-14 | 2011-08-17 | 翁小翠 | LED (light emitting diode) lamp bulb with high light-emitting rate |
| CN103277678A (en) * | 2013-05-14 | 2013-09-04 | 江苏华英光宝科技股份有限公司 | Full-angle LED light-emitting tube |
| CN103292177A (en) * | 2013-05-14 | 2013-09-11 | 江苏华英光宝科技股份有限公司 | All-angle lighting LED lamp tube |
| CN103527964A (en) * | 2013-10-31 | 2014-01-22 | 深圳市中电照明股份有限公司 | Solid LED (light-emitting diode) lamp bulb |
-
2011
- 2011-04-14 CN CN2011201093630U patent/CN201992438U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155665A (en) * | 2011-04-14 | 2011-08-17 | 翁小翠 | LED (light emitting diode) lamp bulb with high light-emitting rate |
| WO2012139306A1 (en) * | 2011-04-14 | 2012-10-18 | Weng Xiaocui | Led bulb with high light-emitting efficiency |
| CN103277678A (en) * | 2013-05-14 | 2013-09-04 | 江苏华英光宝科技股份有限公司 | Full-angle LED light-emitting tube |
| CN103292177A (en) * | 2013-05-14 | 2013-09-11 | 江苏华英光宝科技股份有限公司 | All-angle lighting LED lamp tube |
| CN103527964A (en) * | 2013-10-31 | 2014-01-22 | 深圳市中电照明股份有限公司 | Solid LED (light-emitting diode) lamp bulb |
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