CN103002632A - Lighting device with optical pulsation suppression by polyphase-driven electric energy - Google Patents
Lighting device with optical pulsation suppression by polyphase-driven electric energy Download PDFInfo
- Publication number
- CN103002632A CN103002632A CN2012103268323A CN201210326832A CN103002632A CN 103002632 A CN103002632 A CN 103002632A CN 2012103268323 A CN2012103268323 A CN 2012103268323A CN 201210326832 A CN201210326832 A CN 201210326832A CN 103002632 A CN103002632 A CN 103002632A
- Authority
- CN
- China
- Prior art keywords
- phase
- parallel
- power
- current limiting
- bridge rectification
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
Abstract
The present invention relies on polyphase alternating current power with phase difference or direct current power rectified from polyphase alternating current power to drive a common -electric-driven luminous body, or to separately drive adjacently installed individual electric-driven luminous bodies so that the pulsation of the outwardly projected light is reduced.
Description
Technical field
The present invention is about borrowing heterogeneous driving electric energy, so that directly use the electric energy driven light emission body of AC power, its luminosity pulsation rate with AC supply voltage can obtain to reduce.
Background technology
Conventional AC electric energy light fixture is its disappearance because of the luminous discontinuous light pulsation that the pulsation of AC power forms.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of lighting device of borrowing heterogeneous driving electric energy to suppress the light pulsation.
For achieving the above object, the invention provides a kind of lighting device of borrowing heterogeneous driving electric energy to suppress the light pulsation, for borrowing the multi-phase AC power of tool phase difference, or by the DC power supply of multi-phase AC power rectification, for driving same electric energy driven light emission body, or driving is other electric energy driven light emission body that the next-door neighbour arranges respectively, so that externally the pulsation of projection light reduces, be included between each phase of three-phase alternating-current supply, be arranged in parallel individually by current limiting element Z10), the circuit arrangement that the interchange end of single-phase bridge rectification device is connected in series, dc output end same polarity parallel connection by the single-phase bridge rectification device of each phase drives luminous element 2000 with common driving direct current energy again) circuit, its main composition contains:
--direct current energy drives luminous element 2000): be a kind of solid-state light emitters that is driven by two or more AC power, comprise being consisted of for accepting DC power supply by the basic luminescence element by light-emitting diode (LED) or Organic Light Emitting Diode (OLED) being driven, or can accept solid-state light emitters that DC power supply drives by same other and consisted of;
Current limiting element Z10) be serial connection single-phase bridge rectification device 804) the interchange end, be parallel to again between three-phase ac power cord (R) and the three-phase ac power cord (T);
Current limiting element Z10) be serial connection single-phase bridge rectification device 802) the interchange end, be parallel to again between three-phase ac power cord (S) and the three-phase ac power cord (R);
Current limiting element Z10) be serial connection single-phase bridge rectification device 803) the interchange end, be parallel to again between three-phase ac power cord (T) and the three-phase ac power cord (S);
--current limiting element Z10): by being consisted of so as to the circuit structure that descends more than one, comprising:
(1) wherein more than one are serial or parallel connection or connection in series-parallel consists of for resistive impedance element, inductive impedance element, capacitive impedance element;
(2) consisted of by the solid-state semiconductor circuit and decide electric current or threshold currents control circuit to what solid-state light emitting element was done simulation or cut the ripple formula.
Be included between the neutral line (N) of (R), (S), (T) each and three-phase and four-line formula AC power of three-phase and four-line formula AC power, be arranged in parallel individually by current limiting element Z10), the circuit arrangement that is connected in series of the interchange end of single-phase bridge rectification device, dc output end same polarity parallel connection by the single-phase bridge rectification device of each phase drives luminous element 2000 with common driving direct current energy again) circuit, its main composition contains:
--direct current energy drives luminous element 2000): be a kind of solid-state light emitters that is driven by two or more AC power, comprise being consisted of for accepting DC power supply by the basic luminescence element by light-emitting diode (LED) or Organic Light Emitting Diode (OLED) being driven, or can accept solid-state light emitters that DC power supply drives by same other and consisted of;
Current limiting element Z10) be serial connection single-phase bridge rectification device 802) the interchange end, after the series connection for being parallel between the neutral line (N) of three-phase and four-line formula AC power cord (R) and three-phase and four-line formula AC power;
Current limiting element Z10) be serial connection single-phase bridge rectification device 803) the interchange end, after the series connection for being parallel between the neutral line (N) of three-phase and four-line formula AC power cord (S) and three-phase and four-line formula AC power;
Current limiting element Z10) be serial connection single-phase bridge rectification device 804) the interchange end, after the series connection for being parallel between the neutral line (N) of three-phase and four-line formula AC power cord (T) and three-phase and four-line formula AC power;
--current limiting element Z10): by being consisted of so as to the circuit structure that descends more than one, comprising:
(1) wherein more than one are serial or parallel connection or connection in series-parallel consists of for resistive impedance element, inductive impedance element, capacitive impedance element;
(2) consisted of by the solid-state semiconductor circuit and decide electric current or threshold currents control circuit to what solid-state light emitting element was done simulation or cut the ripple formula.
The present invention is for borrowing the multi-phase AC power of tool phase difference, or by the DC power supply of multi-phase AC power rectification, for driving same electric energy driven light emission body, or drives respectively and is other electric energy driven light emission body that the next-door neighbour arranges, so that externally the pulsation of projection light reduces.
Description of drawings
Figure 1 shows that tradition with single phase alternating current power supply or the direct light pulsation mode chart that drives the electric energy driven light emission body after exchanging full-wave rectification;
Figure 2 shows that the present invention is between each phase of three-phase alternating-current supply, be arranged in parallel individually the circuit arrangement that the interchange end by current limiting element Z10, single-phase bridge rectification device is connected in series, driven again the circuit diagram of luminous element 2000 by the dc output end same polarity parallel connection of the single-phase bridge rectification device of each phase with common driving direct current energy;
Figure 3 shows that the present invention is between the neutral line N of R, the S of three-phase and four-line formula AC power, T each and three-phase and four-line formula AC power, be arranged in parallel individually the circuit arrangement that the interchange end by current limiting element Z10, single-phase bridge rectification device is connected in series, driven again the circuit diagram of luminous element 2000 by the dc output end same polarity parallel connection of the single-phase bridge rectification device of each phase with common driving direct current energy.
Description of reference numerals
2000: direct current energy drives luminous element
802,803,804: the single-phase bridge rectification device
A: AC power waveform
B: AC rectification is the waveform of direct current
C: the light pulsation wave mode of electric energy driven light emission body
N: the neutral line
R, S, T: three-phase ac power cord
Z10: current limiting element.
Embodiment
Conventional AC electric energy light fixture is its disappearance because of the luminous discontinuous light pulsation that the pulsation of AC power forms.
The present invention is for borrowing the multi-phase AC power of tool phase difference, or by the DC power supply of multi-phase AC power rectification, for driving same electric energy driven light emission body, or drives respectively and is other electric energy driven light emission body that the next-door neighbour arranges, so that externally the pulsation of projection light reduces.
Figure 1 shows that tradition with single phase alternating current power supply or the direct light pulsation mode chart that drives the electric energy driven light emission body after exchanging full-wave rectification.
In shown in Figure 1, a is AC power waveform, and b is that AC rectification is the waveform of direct current, and c is the light pulsating waveform of electric energy driven light emission body, if the electric energy of inputting is the two-way pulsed power of two-way non-sinusoidal waveform, it is also identical that it improves function;
Figure 2 shows that the present invention is between each phase of three-phase alternating-current supply, be arranged in parallel individually the circuit arrangement that the interchange end by current limiting element Z10, single-phase bridge rectification device is connected in series, driven again the circuit diagram of luminous element 2000 with common driving direct current energy by the dc output end same polarity parallel connection of the single-phase bridge rectification device of each phase, as shown in Figure 2, its main composition contains:
--direct current energy drives luminous element 2000: be a kind of solid-state light emitters that is driven by two above DC power supply, comprise being consisted of for accepting DC power supply by the basic luminescence element by light-emitting diode (LED) or Organic Light Emitting Diode (OLED) being driven, or can accept solid-state light emitters that DC power supply drives by same other and consisted of;
Current limiting element Z10 is parallel between three-phase ac power cord R and the three-phase ac power cord T for the interchange end of serial connection single-phase bridge rectification device 804 again;
Current limiting element Z10 is parallel between three-phase ac power cord S and the three-phase ac power cord R for the interchange end of serial connection single-phase bridge rectification device 802 again;
Current limiting element Z10 is parallel between three-phase ac power cord T and the three-phase ac power cord S for the interchange end of serial connection single-phase bridge rectification device 803 again;
--current limiting element Z10: by being consisted of so as to the circuit structure that descends more than one, comprising:
(1) wherein more than one are serial or parallel connection or connection in series-parallel consists of for resistive impedance element, inductive impedance element, capacitive impedance element;
(2) consisted of by the solid-state semiconductor circuit and decide electric current or threshold currents control circuit to what solid-state light emitting element was done simulation or cut the ripple formula.
Figure 3 shows that the present invention is between the neutral line N of R, the S of three-phase and four-line formula AC power, T each and three-phase and four-line formula AC power, be arranged in parallel individually the circuit arrangement that the interchange end by current limiting element Z10, single-phase bridge rectification device is connected in series, driven again the circuit diagram of luminous element 2000 by the dc output end same polarity parallel connection of the single-phase bridge rectification device of each phase with common driving direct current energy; As shown in Figure 3, its main composition contains:
--direct current energy drives luminous element 2000: be a kind of solid-state light emitters that is driven by two above DC power supply, comprise being consisted of for accepting DC power supply by the basic luminescence element by light-emitting diode (LED) or Organic Light Emitting Diode (OLED) being driven, or can accept solid-state light emitters that DC power supply drives by same other and consisted of;
Current limiting element Z10 is the interchange end of serial connection single-phase bridge rectification device 802, supplies after the series connection to be parallel between the neutral line N of three-phase and four-line formula AC power cord R and three-phase and four-line formula AC power;
Current limiting element Z10 is the interchange end of serial connection single-phase bridge rectification device 803, supplies after the series connection to be parallel between the neutral line N of three-phase and four-line formula AC power cord S and three-phase and four-line formula AC power;
Current limiting element Z10 is the interchange end of serial connection single-phase bridge rectification device 804, supplies after the series connection to be parallel between the neutral line N of three-phase and four-line formula AC power cord T and three-phase and four-line formula AC power;
--current limiting element Z10: by being consisted of so as to the circuit structure that descends more than one, comprising:
(1) wherein one or more are serial or parallel connection or connection in series-parallel consists of for resistive impedance element, inductive impedance element, capacitive impedance element;
(2) consisted of by the solid-state semiconductor circuit and decide electric current or threshold currents control circuit to what solid-state light emitting element was done simulation or cut the ripple formula.
The above is preferred embodiment of the present invention only, is not for limiting protection scope of the present invention.
Claims (2)
1. borrow heterogeneous driving electric energy to suppress the lighting device that light is pulsed for one kind, it is characterized in that, for borrowing the multi-phase AC power of tool phase difference, or by the DC power supply of multi-phase AC power rectification, for driving same electric energy driven light emission body, or driving is other electric energy driven light emission body that the next-door neighbour arranges respectively, so that externally the pulsation of projection light reduces, be included between each phase of three-phase alternating-current supply, be arranged in parallel individually by current limiting element (Z10), the circuit arrangement that the interchange end of single-phase bridge rectification device is connected in series, drive the circuit of luminous element (2000) by the dc output end same polarity parallel connection of the single-phase bridge rectification device of each phase with common driving direct current energy again, its main composition contains:
--direct current energy drives luminous element (2000): be a kind of solid-state light emitters that is driven by two or more DC power supply, comprise being consisted of for accepting DC power supply by the basic luminescence element by light-emitting diode (LED) or Organic Light Emitting Diode (OLED) being driven, or can accept solid-state light emitters that DC power supply drives by same other and consisted of;
Current limiting element (Z10) is parallel between three-phase ac power cord (R) and the three-phase ac power cord (T) for the interchange end of serial connection single-phase bridge rectification device (804) again;
Current limiting element (Z10) is parallel between three-phase ac power cord (S) and the three-phase ac power cord (R) for the interchange end of serial connection single-phase bridge rectification device (802) again;
Current limiting element (Z10) is parallel between three-phase ac power cord (T) and the three-phase ac power cord (S) for the interchange end of serial connection single-phase bridge rectification device (803) again;
--current limiting element (Z10): by being consisted of so as to the circuit structure that descends more than one, comprising:
(1) wherein more than one are serial or parallel connection or connection in series-parallel consists of for resistive impedance element, inductive impedance element, capacitive impedance element;
(2) consisted of by the solid-state semiconductor circuit and decide electric current or threshold currents control circuit to what solid-state light emitting element was done simulation or cut the ripple formula.
2. the lighting device of borrowing heterogeneous driving electric energy to suppress the light pulsation as claimed in claim 1, it is characterized in that, be included in (R) of three-phase and four-line formula AC power, (S), (T) between the neutral line (N) of each and three-phase and four-line formula AC power, be arranged in parallel individually by current limiting element (Z10), the circuit arrangement that the interchange end of single-phase bridge rectification device is connected in series, drive the circuit of luminous element (2000) by the dc output end same polarity parallel connection of the single-phase bridge rectification device of each phase with common driving direct current energy again, its main composition contains:
--direct current energy drives luminous element (2000): be a kind of solid-state light emitters that is driven by two or more DC power supply, comprise being consisted of for accepting DC power supply by the basic luminescence element by light-emitting diode (LED) or Organic Light Emitting Diode (OLED) being driven, or can accept solid-state light emitters that DC power supply drives by same other and consisted of;
Current limiting element (Z10) is the interchange end of serial connection single-phase bridge rectification device (802), supplies after the series connection to be parallel between the neutral line (N) of three-phase and four-line formula AC power cord (R) and three-phase and four-line formula AC power;
Current limiting element (Z10) is the interchange end of serial connection single-phase bridge rectification device (803), supplies after the series connection to be parallel between the neutral line (N) of three-phase and four-line formula AC power cord (S) and three-phase and four-line formula AC power;
Current limiting element (Z10) is the interchange end of serial connection single-phase bridge rectification device (804), supplies after the series connection to be parallel between the neutral line (N) of three-phase and four-line formula AC power cord (T) and three-phase and four-line formula AC power;
--current limiting element (Z10): by being consisted of so as to the circuit structure that descends more than one, comprising:
(1) wherein more than one are serial or parallel connection or connection in series-parallel consists of for resistive impedance element, inductive impedance element, capacitive impedance element;
(2) consisted of by the solid-state semiconductor circuit and decide electric current or threshold currents control circuit to what solid-state light emitting element was done simulation or cut the ripple formula.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/226,632 US9066378B2 (en) | 2009-06-29 | 2011-09-07 | Lighting device with optical pulsation suppression by polyphase-driven electric energy |
| US13/226,632 | 2011-09-07 | ||
| US13/226632 | 2011-09-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103002632A true CN103002632A (en) | 2013-03-27 |
| CN103002632B CN103002632B (en) | 2017-07-07 |
Family
ID=47076092
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204517259U Expired - Lifetime CN202759652U (en) | 2011-09-07 | 2012-09-06 | Lighting device for inhibiting light fluctuation by means of multiphase driving electric energy |
| CN201210326832.3A Active CN103002632B (en) | 2011-09-07 | 2012-09-06 | Electric energy is driven to suppress lighting device with optical pulsation by means of multiphase |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012204517259U Expired - Lifetime CN202759652U (en) | 2011-09-07 | 2012-09-06 | Lighting device for inhibiting light fluctuation by means of multiphase driving electric energy |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP2568773B1 (en) |
| JP (1) | JP5959375B2 (en) |
| CN (2) | CN202759652U (en) |
| AU (1) | AU2012216721B2 (en) |
| BR (1) | BR102012022624B1 (en) |
| CA (1) | CA2788742C (en) |
| SG (1) | SG188735A1 (en) |
| TW (2) | TWM460477U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070361A1 (en) * | 2013-11-15 | 2015-05-21 | 钰瀚科技股份有限公司 | Led illuminating device using multiphase alternating current power supply |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2788742C (en) * | 2011-09-07 | 2019-03-05 | Tai-Her Yang | Lighting device with optical pulsation suppression by polyphase-driven electric energy |
| CN103731964A (en) * | 2014-01-17 | 2014-04-16 | 北京大学东莞光电研究院 | Integrated packaging light source structure of three-phase alternating-current driven LED |
| GB2548209B (en) * | 2016-03-07 | 2018-03-21 | Intelligent Growth Solutions Ltd | Controllable power and lighting system |
| DE102016012061B4 (en) | 2016-09-29 | 2018-09-06 | Helge Brüggemann | Method and arrangement for operating a semiconductor light source on a 3-phase alternating voltage |
| CN113708653A (en) * | 2020-05-21 | 2021-11-26 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Harmonic generation rectifier and vehicle-mounted power supply system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6385057B1 (en) * | 2001-01-31 | 2002-05-07 | Bartronics, Inc. | Power conversion system and method of power conversion |
| CN101908828A (en) * | 2010-07-27 | 2010-12-08 | 中国科学院等离子体物理研究所 | Novel circuit topological structure of high-power four-quadrant rectifier |
| CN101936470A (en) * | 2009-06-29 | 2011-01-05 | 杨泰和 | Lighting device with optical pulsation suppression by polyphase-driven electric energy |
| CN202759652U (en) * | 2011-09-07 | 2013-02-27 | 杨泰和 | Lighting device for inhibiting light fluctuation by means of multiphase driving electric energy |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0665178B2 (en) * | 1988-02-23 | 1994-08-22 | 株式会社オーク製作所 | Annular electrodeless discharge light source device and lighting method thereof |
| JPH0731150A (en) * | 1993-07-09 | 1995-01-31 | Shindengen Electric Mfg Co Ltd | Switching power supply |
| JPH1197747A (en) * | 1997-09-24 | 1999-04-09 | Db Seiko:Kk | Lighting circuit for ac light emitting diode |
| JP3530359B2 (en) * | 1997-10-03 | 2004-05-24 | 新電元工業株式会社 | Three-phase power factor improving converter |
| US20070090767A1 (en) * | 2005-10-24 | 2007-04-26 | American Electrolier, Inc. | Lighting system with multi-ballast AC-to-DC converter |
| CN101989817B (en) * | 2009-07-29 | 2014-12-03 | 通用电气公司 | Three-phase LED power supply |
| JP2011077009A (en) * | 2009-10-02 | 2011-04-14 | Fujisaki Denki Kk | Lighting system of tunnel |
| CN101741264A (en) * | 2009-11-22 | 2010-06-16 | 杨义根 | Three-phase power supply way of single-phase electric utensil |
-
2012
- 2012-09-05 CA CA2788742A patent/CA2788742C/en active Active
- 2012-09-05 SG SG2012065959A patent/SG188735A1/en unknown
- 2012-09-06 BR BR102012022624-3A patent/BR102012022624B1/en active IP Right Grant
- 2012-09-06 CN CN2012204517259U patent/CN202759652U/en not_active Expired - Lifetime
- 2012-09-06 CN CN201210326832.3A patent/CN103002632B/en active Active
- 2012-09-06 TW TW101217211U patent/TWM460477U/en unknown
- 2012-09-06 JP JP2012196027A patent/JP5959375B2/en active Active
- 2012-09-06 TW TW101132562A patent/TWI583244B/en active
- 2012-09-07 EP EP12183516.9A patent/EP2568773B1/en active Active
- 2012-09-07 AU AU2012216721A patent/AU2012216721B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6385057B1 (en) * | 2001-01-31 | 2002-05-07 | Bartronics, Inc. | Power conversion system and method of power conversion |
| CN101936470A (en) * | 2009-06-29 | 2011-01-05 | 杨泰和 | Lighting device with optical pulsation suppression by polyphase-driven electric energy |
| CN101908828A (en) * | 2010-07-27 | 2010-12-08 | 中国科学院等离子体物理研究所 | Novel circuit topological structure of high-power four-quadrant rectifier |
| CN202759652U (en) * | 2011-09-07 | 2013-02-27 | 杨泰和 | Lighting device for inhibiting light fluctuation by means of multiphase driving electric energy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015070361A1 (en) * | 2013-11-15 | 2015-05-21 | 钰瀚科技股份有限公司 | Led illuminating device using multiphase alternating current power supply |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2788742C (en) | 2019-03-05 |
| SG188735A1 (en) | 2013-04-30 |
| JP5959375B2 (en) | 2016-08-02 |
| AU2012216721A1 (en) | 2013-03-21 |
| CA2788742A1 (en) | 2013-03-07 |
| EP2568773A3 (en) | 2014-01-08 |
| EP2568773B1 (en) | 2016-05-11 |
| BR102012022624A8 (en) | 2020-06-30 |
| JP2013058477A (en) | 2013-03-28 |
| TW201315288A (en) | 2013-04-01 |
| BR102012022624A2 (en) | 2016-02-16 |
| CN202759652U (en) | 2013-02-27 |
| TWM460477U (en) | 2013-08-21 |
| AU2012216721B2 (en) | 2016-08-25 |
| EP2568773A2 (en) | 2013-03-13 |
| BR102012022624B1 (en) | 2020-09-15 |
| TWI583244B (en) | 2017-05-11 |
| CN103002632B (en) | 2017-07-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201893960U (en) | Lighting device for inhibiting light fluctuation by means of multiphase driving electric energy | |
| CN202759652U (en) | Lighting device for inhibiting light fluctuation by means of multiphase driving electric energy | |
| JP5547798B2 (en) | LED lighting device | |
| CN102740553B (en) | The solid luminous device of controllable heterogeneous invalid electric energy | |
| CN102510615B (en) | Voltage-multiplying rectifying high-voltage power-supplying constant current driving circuit for serially connected LEDs (Light Emitting Diodes) | |
| KR102023869B1 (en) | Solid-state light emitting device having controllable multiphase reactive power | |
| US9107255B2 (en) | Light-emitting diode light tube driving circuit | |
| US9066378B2 (en) | Lighting device with optical pulsation suppression by polyphase-driven electric energy | |
| CN102905429B (en) | Pulse-driven power circuit of LEDs (light emitting diodes) with equal duty ratio | |
| KR20130087696A (en) | A control system for minimize brightness of deviation in case ac driving led | |
| CN203099716U (en) | Alternating-current LED (light-emitting diode) integrated package structure | |
| KR20140042413A (en) | Lighting device with optical pulsation suppression by polyphase-driven electric energy | |
| TWI504313B (en) | High utilization of light emitting diode components | |
| CN103167661A (en) | High-energy-saving light-emitting diode (LED) ceiling lamp (plate lamp) | |
| CN102141203A (en) | LED (light emitting diode) light emitting device | |
| TWM486008U (en) | Saving formula lighting illumination apparatus | |
| CN104602382A (en) | Alternating-current LED bulb lamp | |
| TWM439315U (en) | Light control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |