CN201386933Y - ACLED illuminating light source - Google Patents
ACLED illuminating light source Download PDFInfo
- Publication number
- CN201386933Y CN201386933Y CN200920115382U CN200920115382U CN201386933Y CN 201386933 Y CN201386933 Y CN 201386933Y CN 200920115382 U CN200920115382 U CN 200920115382U CN 200920115382 U CN200920115382 U CN 200920115382U CN 201386933 Y CN201386933 Y CN 201386933Y
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- led
- led lighting
- led module
- circuit board
- light
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Abstract
The utility model discloses an ACLED illuminating light source, which comprises a printing circuit board, a heat sink with an alternative luminous circuit and an emulation layer. The alternative luminous circuit formed by connecting a plurality of LED modules is capable of realizing unidirectional conduction or bidirectional conduction of alternative current and driving the LED modules to achieve entire surface light-emitting, and each LED module is formed by integrating a plurality of LED chips by means of adopting series connection arrangement or parallel connection arrangement. The ACLED illuminating light source employs the principle that unidirectional conducting property of a diode of an LEDPN junction transistor is used for rectifying to prefabricate the LED modules capable of passing through different direct current voltages and electric currents, further a plurality of the LED modules are connected to form a luminous circuit, and the AC current is enabled to perform unidirectional conduction or bidirectional conduction on the luminous circuit, thereby converting electric energy into optical energy and achieving the purpose of entire surface light-emitting.
Description
Technical field
The utility model relates to a kind of LED lighting source, and is particularly a kind of with exchanging electrically driven (operated) LED lighting source.
Background technology
Led light source as green, energy-conservation, power saving, long-life the 4th generation lighting and be a dark horse, extensively be subjected to pay close attention to, like a raging fire developing rapidly.Present LED lighting source is that ((semiconductor devices of work of IF=200 → 1500mA) must provide the suitable DC current could be normally luminous to low-voltage for VF=2 → 3.6V), big electric current.
Because the power supply that our normal lighting uses is High Level AC Voltage (AC100-220V), so must use the technology of step-down to obtain lower voltage, commonly used is transformer or Switching Power Supply step-down, then alternating current (AC) is transformed into direct current (DC), is transformed into constant-current source again and just can impels led light source luminous.Therefore the system applies scheme of DC driven led light source must be: transformer+rectification (or Switching Power Supply)+constant-current source.
Present DC LED has obtained the luminous technology of general popularization, low-voltage DC driven (being that DC drives) led light source in DC power-supply systems such as battery more and more ripe.
But at ac power supply system, particularly must be in the mains-supplied system through step-down, rectifying conversion becomes direct current supply normally to use.Not only improve the application cost of LED, also increased the volume of LED, increased the loss that exchange conversion becomes direct current.Very limited as space for the light fixture of E27 standard screw socket, just be difficult to settle transformer+rectification (or Switching Power Supply)+constant-current source.No matter be transformer+rectification or Switching Power Supply step-down simultaneously, all can there be a certain amount of loss in system.DC LED is depleted at the electric power that exchanges, has approximately during conversion between the direct current 15～30%, and system effectiveness is difficult to accomplish more than 90%.Make LED be subjected to very big restriction as the popularization and application of lighting source.If can be with the direct driving LED light source luminescent of alternating current (being AC), the system applies scheme will be simplified greatly, and system effectiveness will be easy to reach more than 90%.
Can the direct led light source device that drives with the LED (promptly being called AC LED) that exchanges driving, particularly civil power be arranged be a problem that must solve.
Summary of the invention
The utility model proposes a kind of led light source device that can be used for alternating current at deficiency of the prior art, and this light source device is made after encapsulating with the illuminating circuit that led module is formed.Its principle is to utilize the unidirectional on state characteristic double as rectification of the diode of LED PN junction, be prefabricated into the led module that can pass through different DC voltages, electric current, again the polylith led module is connected to form illuminating circuit, make the AC electric current can the unidirectional or above-mentioned illuminating circuit of two-way admittance, thereby convert electric energy to luminous energy, reach the purpose of electrified light emitting.
The technical solution of the utility model is achieved in that
A kind of AC LED lighting source, form by printed circuit board (PCB), the heat sink and encapsulated layer that has an AC light-emitting circuit, described AC light-emitting circuit is that the alternating current that makes that is connected to form by a plurality of led modules can be unidirectional or the circuit of two-way admittance and driving LED module entirely lighting, and described led module is to be formed adopting serial or parallel connection to arrange to integrate by a plurality of led chips.
In order further to improve light efficiency, described led module is by using the module of metallic conduction material series connection eutectic on a substrate after a plurality of led chip diamond arraies.
As preferably, described substrate, heat sink all be to make by high-thermal conductive metal or ceramic material, its thickness is less than 2mm.The thin type substrate, the heat sink LED that more helps that have adopted metal or ceramic material to make dispel the heat, and prolong its service life.
In order to adapt to luminous needs, as preferably, substrate be shaped as rectangle or fan-shaped, be provided with the positive and negative electrode of mutually insulated at the two ends of substrate, positive and negative electrode is electrically connected with adjacent separately led chip respectively.The quantity of the led chip array of solid crystalline substance can determine that the led module positive and negative electrode of mutually insulated has guaranteed the security performance of led module according to the needs of illuminating circuit and the size of substrate on the substrate.
As preferably, described AC light-emitting circuit is the half-wave illuminating circuit.Described half-wave illuminating circuit is made up of the led module that at least two reverse parallel connections connect.
As preferably, described AC light-emitting circuit is at least 5 bridge-type illuminating circuits that led module is connected to form according to electrical bridge principle.
In order to make alternating voltage in when fluctuation, the operating current of LED changes and is controlled at normal duty, and as preferably, described AC light-emitting circuit is connected with the semiconductor current limiter device.
As preferably, described semiconductor current limiter device is any device in resistance, electric capacity or the inductance.
As preferably, described printed circuit board (PCB) is to be made by highly heat-conductive material, and printed circuit board (PCB) is provided with ac input electrode and a plurality of semiconductor current limiter device tie point.Has the integrated level height, advantage easy to install.
As preferably, described printed circuit board (PCB) is plane or curved surface circuit board.Therefore can select difform printed circuit board (PCB) according to luminous intensity distribution and illumination needs.
Adopted the advantage that the utlity model has of technique scheme to be:
1, the utility model is to have expanded the LED electric power system to drive to exchanging from DC driven, also can not connect cisco unity malfunction on the contrary owing to the polarity of voltage of LED device simultaneously when practical application.Particularly save dc driver, further reduced the cost of manufacture of AC led light source device.About 15～30% electric power was depleted when DC LED changed between interchange, direct current, and with the direct driving LED light source luminescent of alternating current (AC), the system applies scheme will be simplified greatly, and system effectiveness can reach more than 90% very like a cork.
2, lighting source of the present utility model is that form in when encapsulation with prefabricated led module can be made by exchanging the illuminating circuit that drives, but illuminating circuit makes AC electric current two-way admittance, and only needing two lead-in wires to import AC powers can luminous work.
3, LED lighting source of the present utility model is alternately luminous, and has utilized the LED outage that the characteristic of the continuous light of twilight sunset is arranged, and makes the almost imperceptible luminous interruption that has of human eye, and LED replaces luminously can reduce heat, and service life is longer than the DC LED life-span.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model led module;
Fig. 3 is the johning knot composition of half-wave illuminating circuit among the utility model embodiment 2;
Fig. 4 is the johning knot composition of bridge-type illuminating circuit among the utility model embodiment 1.
In the utility model: 1, printed circuit board (PCB); 2, the AC light-emitting circuit; 3, heat sink; 4, encapsulated layer; 5, positive and negative electrode; 6, led chip; 7, led module; 8, heat sink fixed area; 9, semiconductor current limiter device tie point; 10, substrate; 11, ac input electrode.
The specific embodiment
The specific embodiment of the present utility model is as follows:
Embodiment 1: as shown in Figure 1 and Figure 2, a kind of AC LED lighting source, form by printed circuit board (PCB) 1, heat sink 3 and the encapsulated layer 4 that have an AC light-emitting circuit 2, described printed circuit board (PCB) 1 is to be made by highly heat-conductive material, printed circuit board (PCB) 1 is provided with ac input electrode 11 and a plurality of semiconductor current limiter device tie point 9, and according to actual illumination and luminous intensity distribution needs, described printed circuit board (PCB) 1 can be plane or curved surface circuit board.The alternating current that makes that described AC light-emitting circuit 2 is made up of a plurality of led modules 7 can be unidirectional or the circuit of two-way admittance and driving LED module 7 entirely lightings, as shown in Figure 2, described led module 7 is by connecting eutectic on a substrate 10 with lead after a plurality of led chip 6 diamond arraies.
Described substrate 10 is to be made by the highly heat-conductive carbon/ceramic ceramic material, and its thickness is generally 1.5mm less than 2mm.Substrate 10 be shaped as rectangle, be provided with the positive and negative electrode 5 of mutually insulated at the two ends, the left and right sides of substrate 10, positive and negative electrode 5 is electrically connected with adjacent separately led chip respectively.
Heat sink 2 of present embodiment is the high-thermal conductive metal material thin-layers that are set directly in the printed circuit board (PCB) 1, and as shown in Figure 4, led module 7 is fixedly connected into the bridge-type illuminating circuit on heat sink 3, and the encapsulated layer made from high light transmissive material 4 is protected then.Described bridge-type illuminating circuit is according to electrical bridge principle, earlier with four led modules 7, connect to form a luminous electric bridge by led module positive and negative electrode 5, ac input end D1, the D2 of luminous electric bridge connect ac input electrode 11 respectively, are connected with a shared led module 7e by lead P1 between two other dc output end of luminous electric bridge D3, the D4.
The luminous electric bridge of described bridge-type such as Fig. 4 connect, it is the positive pole of the positive pole connection led module 7d of led module 7a, the negative pole of led module 7b connects the negative pole of led module 7c, and the negative pole of led module 7a connects the positive pole of led module 7b, and the positive pole of led module 7c connects the negative pole of led module 7d; That is led module 7a is opposite with the conducting direction of led module 7d, and led module 7b is opposite with the conducting direction of led module 7c, and led module 7a is identical with the conducting direction of led module 7b, and led module 7c is identical with the conducting direction of led module 7d.Link D2 between link D1 between led module 7a and the led module 7b, led module 7c and the led module 7d is an ac input end, and it connects AC power AC; Link D4 between link D3 between led module 7a and the led module 7d, led module 7b and the led module 7c is a dc output end, connect a shared led module 7e between dc output end D3, D4, dc output end D3 connects the negative pole of led module 7e, the positive pole that dc output end D4 connects led module 7e.
As shown in Figure 4, the positive half cycle of alternating current flows along solid line P2 path, and negative half period flows along dotted line P3 path, and the led module on four brachium pontis is luminous by turns, and the led module on the brachium pontis is simultaneously luminous relatively, middle shared led module 7e because of shared always luminous; When being the positive half cycle of alternating current, led module 7c, 7e, 7a,, luminous; During the negative half period of alternating current, led module 7b, 7e, 7d are luminous.In the alternating current of 50Hz, can rotate and light with the frequency of per second 50 times.Though the direct current that luminous electric bridge is obtained is pulsating direct current, the luminous of LED also flashed, but because LED and fluorescent material have the characteristic of the continuous light of outage twilight sunset, twilight sunset can keep tens microseconds, because of the memory of human eye convection current moving light spot has inertia, human eye is continuously luminous to the mode of operation deciphering of the luminous+twilight sunset of led light source as a result.In order to make alternating voltage when fluctuating, the variation of the operating current of LED is controlled at normal duty.Semiconductor devices tie point 9 in printed circuit board (PCB) 1 is provided with the resistance current limiting device, import two ac input end D1, D2 of luminous electric bridge like this through the resistance current limliting from the level pressure alternating current of ac input electrode 11 inputs, supply with a shared led module 7e by dc output end D3, the D4 of luminous electric bridge, convert electric energy to luminous energy, reach the purpose of electrified light emitting.
And partial L ED module has half the time in work, have half the time having a rest, thereby heating is reduced 40-20%.Therefore the service life of AC LED is long than DC LED.
Embodiment 2: what the difference of present embodiment and embodiment 1 was that the illuminating circuit of AC LED lighting source adopts is the half-wave illuminating circuit, and as shown in Figure 3, led module is fixedly connected into the half-wave illuminating circuit on heat sink 3.Described half-wave illuminating circuit is an illuminating circuit of forming the ACLED light source with pair of LEDs module reverse parallel connection connecting mode.The positive pole that the reverse parallel connection connecting mode refers to two prefabricated led modules connects with negative pole, and negative pole connects with anodal.Two prefabricated led module reverse parallel connections are connected, and the positive-negative half-cycle that makes interchange decide voltage when the alternating current voltage power supply of ac power supply system all has a led module luminous.When alternating current voltage E in the 0-π time, exchange and just decide on the voltage E, to bear down, being one group with led module 7f and led module 7g is described, wherein led module 7f decides under the voltage forward drive luminous in interchange, and led module 7g exchanges and decide voltage reversal by not luminous, in the time of π-2 π, exchange decide to bear on the voltage E, following just.Decide voltage luminous under driving exchanging for led module 7g, and led module 7f exchanges and decide voltage reversal by not luminous, alternately luminous, the purpose that reaches electrified light emitting of two led modules when the voltage driving is decided in interchange.
Embodiment 3: present embodiment and embodiment 1, embodiment 2, difference be that heat sink 3 is not to be made either directly on the printed circuit board (PCB) 1, printed circuit board (PCB) 1 is provided with heat sink fixed area 8, can on heat sink 3, connect led module 7 earlier, be fixed in the heat sink fixed area 8 of printed circuit board (PCB) 1 heat sink 3 then by different illuminating circuits.
Note also that at last above what enumerate only is specific embodiment of the utility model, obviously the utility model is not limited to above embodiment, and many distortion can also be arranged.Those of ordinary skill in the art can evenly think protection domain of the present utility model from the distortion that the disclosed content of the utility model directly derives or associates.
Claims (10)
1, a kind of AC LED lighting source, form by printed circuit board (PCB) (1), heat sink (3) that have AC light-emitting circuit (2) and encapsulated layer (4), it is characterized in that: the alternating current that makes that described AC light-emitting circuit (2) is made up of a plurality of led modules (7) can be unidirectional or the circuit of two-way admittance and driving LED module (7) entirely lighting, and described led module (7) is to be adopted serial or parallel connection to arrange to integrate by a plurality of led chips (6) to form.
2, a kind of AC LED lighting source according to claim 1 is characterized in that: described led module (7) is by using the module of metallic conduction material series connection eutectic on a substrate (10) after a plurality of led chips (6) diamond array.
3, a kind of AC LED lighting source according to claim 2, it is characterized in that: described substrate (10), heat sink (3) are to be made by high-thermal conductive metal or ceramic material, and its thickness is less than 2mm.
4, according to claim 2 or 3 described a kind of AC LED lighting sources, it is characterized in that: substrate (10) be shaped as rectangle or fan-shaped, be provided with the positive and negative electrode (5) of mutually insulated at the two ends of substrate (10), positive and negative electrode (5) is electrically connected with adjacent separately led chip respectively.
5, a kind of AC LED lighting source according to claim 1, it is characterized in that: described AC light-emitting circuit (2) is the half-wave illuminating circuit.
6, a kind of AC LED lighting source according to claim 1 is characterized in that: the bridge-type illuminating circuit that described AC light-emitting circuit (2) is connected to form at least 5 led modules (7).
7, according to claim 1 or 5 or 6 described a kind of AC LED lighting sources, it is characterized in that: described AC light-emitting circuit (2) is connected with the semiconductor current limiter device.
8, a kind of AC LED lighting source according to claim 7, it is characterized in that: described semiconductor current limiter device is any device in resistance, electric capacity or the inductance.
9, a kind of AC LED lighting source according to claim 1, it is characterized in that: described printed circuit board (PCB) (1) is to be made by highly heat-conductive material, and printed circuit board (PCB) (1) is provided with ac input electrode (11) and a plurality of semiconductor current limiter device tie points (9).
10, according to claim 1 or 9 described a kind of AC LED lighting sources, it is characterized in that: described printed circuit board (PCB) (1) is plane or curved surface circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920115382U CN201386933Y (en) | 2009-03-16 | 2009-03-16 | ACLED illuminating light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920115382U CN201386933Y (en) | 2009-03-16 | 2009-03-16 | ACLED illuminating light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201386933Y true CN201386933Y (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920115382U Expired - Fee Related CN201386933Y (en) | 2009-03-16 | 2009-03-16 | ACLED illuminating light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201386933Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917810A (en) * | 2010-09-03 | 2010-12-15 | 贵阳世纪天元科技有限公司 | LED (Light Emitting Diode) lighting method and device in AC power supply mode |
| CN102142508A (en) * | 2010-12-16 | 2011-08-03 | 西安炬光科技有限公司 | Encapsulation structure and encapsulation method for high-power and high-brightness LED light source |
| CN102338358A (en) * | 2010-07-21 | 2012-02-01 | 重庆介质电子技术有限公司 | Circuit structure of AC LED (Alternating Current Light-Emitting Diode) lighting lamp |
| CN102468293A (en) * | 2010-11-09 | 2012-05-23 | 柏友照明科技股份有限公司 | Polycrystal packaging structure directly electrically connected with alternating current power supply |
| CN102997076A (en) * | 2011-09-13 | 2013-03-27 | 周志胜 | High Efficiency LED Lamps |
| US8841856B1 (en) | 2013-10-03 | 2014-09-23 | Robertson Transformer Co. | Capacitive ladder feed for AC LED |
-
2009
- 2009-03-16 CN CN200920115382U patent/CN201386933Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338358A (en) * | 2010-07-21 | 2012-02-01 | 重庆介质电子技术有限公司 | Circuit structure of AC LED (Alternating Current Light-Emitting Diode) lighting lamp |
| CN101917810A (en) * | 2010-09-03 | 2010-12-15 | 贵阳世纪天元科技有限公司 | LED (Light Emitting Diode) lighting method and device in AC power supply mode |
| CN102468293A (en) * | 2010-11-09 | 2012-05-23 | 柏友照明科技股份有限公司 | Polycrystal packaging structure directly electrically connected with alternating current power supply |
| CN102142508A (en) * | 2010-12-16 | 2011-08-03 | 西安炬光科技有限公司 | Encapsulation structure and encapsulation method for high-power and high-brightness LED light source |
| CN102997076A (en) * | 2011-09-13 | 2013-03-27 | 周志胜 | High Efficiency LED Lamps |
| US8841856B1 (en) | 2013-10-03 | 2014-09-23 | Robertson Transformer Co. | Capacitive ladder feed for AC LED |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Hangke Optoelectronics Co., Ltd. Assignor: Yan Qian Jun|Wu Mingfan Contract record no.: 2010330000531 Denomination of utility model: ACLED illuminating light source Granted publication date: 20100120 License type: Exclusive License Record date: 20100416 |
|
| ASS | Succession or assignment of patent right |
Owner name: HANGZHOU HANGKE OPTOELECTRONICS CO., LTD. Free format text: FORMER OWNER: YAN QIANJUN Effective date: 20110718 Free format text: FORMER OWNER: WU MINGFAN |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 310012 ROOM 1-2-302, YANGGUANG DIDAI GARDEN, WENYI WEST ROAD, HANGZHOU CITY, ZHEJIANG PROVINCE TO: 310011 5/F, LI'ERDA BUILDING, NO. 425, DENGYUN ROAD, GONGSHU DISTRICT, HANGZHOU CITY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110718 Address after: Hangzhou City, Zhejiang province 310011 Gongshu District Dengyun Road No. 425 Lilda Building 5 floor Patentee after: Hangzhou Hangke Optoelectronics Co., Ltd. Address before: Hangzhou City, Zhejiang province 310012 West Sunshine Garden Room 1-2-302 Co-patentee before: Wu Mingfan Patentee before: Yan Qianjun |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang province 310011 Gongshu District Dengyun Road No. 425 Lilda Building 5 floor Patentee after: Hangzhou Hangke Photoelectric Co., Ltd. Address before: Hangzhou City, Zhejiang province 310011 Gongshu District Dengyun Road No. 425 Lilda Building 5 floor Patentee before: Hangzhou Hangke Optoelectronics Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20170316 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |