CN201297596Y - AC light-emitting device - Google Patents

AC light-emitting device Download PDF

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Publication number
CN201297596Y
CN201297596Y CNU2008201789471U CN200820178947U CN201297596Y CN 201297596 Y CN201297596 Y CN 201297596Y CN U2008201789471 U CNU2008201789471 U CN U2008201789471U CN 200820178947 U CN200820178947 U CN 200820178947U CN 201297596 Y CN201297596 Y CN 201297596Y
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CN
China
Prior art keywords
mentioned
illuminator
crystal particle
alternating
emitting diode
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Expired - Lifetime
Application number
CNU2008201789471U
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Chinese (zh)
Inventor
林瑞映
詹益仁
许友耕
叶文勇
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Epistar Corp
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Industrial Technology Research Institute ITRI
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Priority to CNU2008201789471U priority Critical patent/CN201297596Y/en
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Abstract

An AC light-emitting device comprises an AC transformer, an AC light-emitting diode module and a protective unit, wherein the AC transformer is used for converting a first alternating voltage provided by an AC power supply into a second alternating voltage, the AC light-emitting diode module comprises a first light-emitting diode grain group and a second light-emitting diode grain group, wherein the first light-emitting diode grain group is conducted at first time in a positive period of the second alternating voltage, the second light-emitting diode grain group is conducted at second time in a negative period of the second alternating voltage, and the protective unit is coupled between the AC power supply and the AC light-emitting diode module and used for protecting overvoltages or overcurrents.

Description

AC illuminator
Technical field
The utility model is about light-emitting device, particularly about a kind of AC illuminator that uses LED crystal particle.
Background technology
Because durable, life-span is long, light and handy, the characteristic of low power consumption and (for example mercury) that do not contain hazardous substance, uses the lighting engineering of light emitting diode (LED) to become Lighting Industry and semiconductor industry very important developing direction in future.Generally speaking, light emitting diode is the light source that is widely used in white light illumination device, indicator lamp, automobile-used signal lamp, automobile-used headlight, flash lamp, backlight liquid crystal display module, projector, outdoor display unit ... or the like.Yet, present light-emitting diode illumination source can't direct control under AC power, use for light-emitting diode illumination source so need to use AC-DC converter to convert AC power to dc source.Therefore, need a kind of light emitting diode illuminating apparatus can operate under the AC power, can avoid operating in simultaneously the infringement of overcurrent under the AC power, overvoltage, surging and/or electromagnetic interference again.
The utility model content
The purpose of this utility model is, a kind of AC illuminator is provided, and it can operate under the AC power, can avoid operating in simultaneously the infringement of overcurrent under the AC power, overvoltage, surging and/or electromagnetic interference again.
The utility model provides a kind of AC illuminator, comprises an AC-AC transformer, converts one second alternating voltage in order to one first alternating voltage that an AC power is provided; One alternating-current light emitting diode module, comprise one first group of LED crystal particle and one second group of LED crystal particle, first group of LED crystal particle is to be switched on a very first time in a positive period of second alternating voltage, and second group of LED crystal particle is one second time that was switched in a negative cycle of second alternating voltage; And a protective unit, be coupled between AC power and the alternating-current light emitting diode module, in order to carry out overvoltage or overcurrent protection.
The utility model also provides a kind of AC illuminator, comprises an AC-AC transformer, converts one second alternating voltage in order to one first alternating voltage that an AC power is provided; An and alternating-current light emitting diode module, comprise a plurality of LED crystal particles, one first group in the wherein above-mentioned LED crystal particle is to be switched on a very first time in a positive period of second alternating voltage, and second group of 1 in the LED crystal particle be in a negative cycle of second alternating voltage one second time of conducting.
The utility model also provides a kind of AC illuminator, comprise a lamp body, be coupled to an AC power, and comprise at least one first group of LED crystal particle and one second group of LED crystal particle, wherein first group of LED crystal particle is to be switched on a very first time in a positive period of one first alternating voltage, and second group of LED crystal particle be in a negative cycle of first alternating voltage one second time of conducting; And a protective unit, be arranged on the lamp body, in order to carry out overvoltage or current protection.
The beneficial effects of the utility model are:
AC illuminator of the present utility model, it can operate under the AC power, can avoid operating in simultaneously the infringement of overcurrent under the AC power, overvoltage, surging and/or electromagnetic interference again.
Description of drawings
For above-mentioned and other purpose of the present utility model, feature and advantage can be become apparent, a preferred embodiment cited below particularly, and conjunction with figs. are described in detail below, wherein:
Figure 1A is the embodiment for AC illuminator in the utility model.
Figure 1B is the embodiment for protective unit in the utility model.
Fig. 2 is another embodiment for AC illuminator in the utility model.
Fig. 3 A is another embodiment for alternating-current light emitting diode module in the utility model.
Fig. 3 B is another embodiment for alternating-current light emitting diode module in the utility model.
Fig. 4 is another embodiment for AC illuminator in the utility model.
The specific embodiment
Figure 1A is the embodiment for AC illuminator in the utility model.As shown in the figure, AC illuminator 100 comprises that an alternating-current light emitting diode module 10A is coupled to AC power 20, an AC-AC transformer 30 is coupled between AC power 20 and the alternating-current light emitting diode module 10A, and a protective unit 40 is coupled between AC-AC transformer 30 and the alternating-current light emitting diode module 10A.Alternating-current light emitting diode module 10A comprises a plurality of settings or is assembled in LED crystal particle 12 on the substrate (not being shown among the figure), and connects at least two strings (two groups) by the lead on the substrate.At some embodiment, substrate is a chip.At other embodiment, substrate is a circuit board.Moreover LED crystal particle 12 is the light-emitting components that can adjust its operand power according to different operating voltage.For example, LED crystal particle 12 also can be replaced by laser diode crystal grain, but is not limited to this.
AC-AC transformer 30 is that the alternating voltage VS1 that AC power 20 is provided is boosted or step-down, in order to generation alternating voltage VS2, and provides to exchanging light-emitting diode (LED) module 10A, with the demand in response to country variant zones of different voltage.For example, AC-AC transformer 30 is AC110V can be converted to AC220V or convert AC220V to AC110V, or with a kind of another kind that converts among AC110V, AC120V, AC220V and the AC240V, but be not limited to this.In embodiment of the present utility model, the starting voltage of each string LED crystal particle 12 is approximately 90V, but is not limited to this.In the positive period of AC power 20, when alternating voltage VS2 is higher than 90V, then have electric current by being positioned at that a string LED crystal particle 12 in left side among the alternating-current light emitting diode module 10A, so that send light.In the negative cycle of AC power 20, when alternating voltage VS2 be lower than-during 90V, then have electric current by being positioned at that a string LED crystal particle 12 on right side among the alternating-current light emitting diode module 10A, so that send light.Be noted that aforementioned starting voltage is that number by each string LED crystal particle 12 is determined, each goes here and there the number of LED crystal particle 12 is to adjust according to need.
Protective unit 40 is to be coupled between AC-AC transformer 30 and the alternating-current light emitting diode module 10A, in order to carry out overcurrent and superpotential protection.In certain embodiments, protective unit 40 can also absorb surging and/or filter electromagnetic interference.Figure 1B shows an embodiment of protective unit 40.As shown in the figure, protective unit 40 is to comprise a fuse 41, in order to carry out overcurrent and superpotential protection.When overcurrent incident or overvoltage event generation, fuse can produce and open circuit, and 10A is not subjected to when overcurrent or superpotential infringement with protection alternating-current light emitting diode module.Protective unit 40 also can comprise a surging absorptive unit 42 and fuse 41, and in order to the absorption surging, and surging absorptive unit 42 is made of an electric capacity, a Zener (Zenar) diode or a rheostat (Varistor).In this embodiment, surging absorptive unit 42 is to be connected in parallel with AC-AC transformer 30, and alternating-current light emitting diode module 10A be earlier be connected in parallel with surging absorptive unit 42 again after fuse 41 is connected, and the rheostatic material in the surging absorptive unit 42 can be carborundum, zinc oxide or strontium titanates, but is not limited to this.
In addition, alternating-current light emitting diode module 10A can be arranged on the different chips with protective unit 40, or be integrated on the same chip, and protective unit 40 can be external in outside the encapsulation of alternating-current light emitting diode module 10A, or be arranged within the encapsulation of LED crystal particle 12 among the alternating-current light emitting diode module 10A, but be not limited to this.In some embodiment, LED crystal particle 12 also can individually encapsulate, and is arranged on the same circuit board with protective unit 40 again.
Fig. 2 is another embodiment for AC illuminator in the utility model.As shown in the figure, AC illuminator 200 is similar to the AC illuminator 100 shown in Figure 1A, and its difference is that protective unit 40 is to be coupled between AC-AC transformer 30 and the AC power 20, is not to be adjacent to alternating-current light emitting diode module 10A.
Fig. 3 A is another embodiment for alternating-current light emitting diode module in the utility model.As shown in the figure, the LED crystal particle 12 among the alternating-current light emitting diode module 10B is to be connected to the little luminescence unit 16 of a plurality of strings, and wherein each little luminescence unit 16 comprises the LED crystal particle 12 that two reverse parallel connections connect, but is not limited to this.In some embodiment, each little luminescence unit 16 is the LED crystal particles 12 that comprise that more multi-parallel, series connection or connection in series-parallel connect.
Fig. 3 B is another embodiment for alternating-current light emitting diode module in the utility model.As shown in the figure, alternating-current light emitting diode module 10C is the little luminescence unit 16 that comprises a plurality of strings ", each little luminescence unit 16 wherein " comprise LED crystal particle 12_1-12_5 that bridge-type connects.For example, in the positive period of AC power 20, each little luminescence unit 16 " in LED crystal particle 12_1-12_3 can be by one very first time of alternating voltage VS2 conducting; and in the negative cycle of AC power 20, each little luminescence unit 16 " in LED crystal particle 12_3-12_5 can be by one second time of alternating voltage VS2 conducting.In other words, in the positive period of AC power 20, all little luminescence units 16 " in LED crystal particle 12_1-12_3 can be regarded as one first group of LED crystal particle; and in the negative cycle of AC power 20, all little luminescence units 16 " in LED crystal particle 12_3-12_5 can be regarded as one second group of LED crystal particle.That is to say that diode crystal particle 12_3 was shared in the positive and negative cycle of AC power 20, also can be considered the 3rd group of LED crystal particle.
Fig. 4 is another embodiment for AC illuminator in the utility model.As shown in the figure, AC illuminator 300 is to be realized as a lighting.AC illuminator 300 comprises a lamp body 50, a pedestal 60 and a plug 70.Lamp body 50 is to be arranged on the pedestal 60, and is alternating-current light emitting diode module 10A, 10B, the 10C that comprises among Figure 1A, Fig. 3 A or Fig. 3 B.Plug 70 is coupled to AC-AC transformer 30 in order to the alternating voltage VS1 that AC power 20 is provided, and AC-AC transformer 30 is that the alternating voltage VS1 that AC power 20 is provided is boosted or step-down, in order to produce another alternating voltage VS2, and provide to exchanging light-emitting diode (LED) module 10A, 10B or 10C, with demand in response to country variant zones of different voltage.For example, AC-AC transformer 30 is AC 110V can be converted to AC 220V or convert AC 220V to AC 110V, or with a kind of another kind that converts among AC 110V, AC 120V, AC 220V and the AC 240V, but be not limited to this.
Protective unit 40 is to be coupled between AC-AC transformer 30 and alternating-current light emitting diode module 10A, 10B or the 10C, in order to carry out overcurrent and superpotential protection, can absorb surging simultaneously and/or filter electromagnetic interference.For example, as shown in Figure 1B, protective unit 40 is to comprise a fuse 41, in order to carry out overcurrent and superpotential protection.When overcurrent incident or overvoltage event generation, fuse 41 can produce and open circuit, and does not suffer damage with protection alternating-current light emitting diode module 10A, 10B or 10C.In this embodiment, protective unit 40 is to be placed among the lamp body 50, but is not limited to this.Protective unit 40 also can comprise a surging absorptive unit 42 and fuse 41, in order to absorb surging.And surging absorptive unit 42 is made of an electric capacity, a Zener (Zenar) diode or a rheostat (Varistor).In this embodiment, surging absorptive unit 42 is to be connected in parallel with AC-AC transformer 30, and alternating-current light emitting diode module 10A, 10B or 10C are and are connected in parallel with surging absorptive unit 42 after fuse 41 is connected again, and the rheostatic material in the surging absorptive unit 42 can be carborundum, zinc oxide or strontium titanates, but is not limited to this.For example, in some embodiment, protective unit 40 can be arranged at pedestal 60.In other embodiment, protective unit 40 can also be arranged between AC-AC transformer 30 and the plug.In some embodiment, protective unit 40 can also be integrated in the alternating-current light emitting diode module 10, and LED crystal particle 12 is arranged within the same encapsulating structure.In addition, the fuse in the protective unit 40 also can be done replaceable design, and can be arranged at the position that makes things convenient for the user to do to replace, as in the pedestal 60 or in the lamp body 50.
Though the utility model discloses as above with preferred embodiment; right its is not in order to limit the utility model; anyly know the operator; in not breaking away from spirit and scope of the present utility model; when can doing a little change and retouching, therefore protection domain of the present utility model is when looking being as the criterion that the claim scope defined.

Claims (15)

1. an AC illuminator is characterized in that, comprising:
One converts the AC-AC transformer of one second alternating voltage in order to one first alternating voltage that an AC power is provided;
One alternating-current light emitting diode module, comprise one first group of LED crystal particle and one second group of LED crystal particle, wherein above-mentioned first group of LED crystal particle is switched on a very first time in a positive period of above-mentioned second alternating voltage, and above-mentioned second group of LED crystal particle was switched on for one second time in a negative cycle of above-mentioned second alternating voltage; And
One in order to carry out the protective unit of overvoltage or overcurrent protection, is coupled between above-mentioned AC power and the above-mentioned alternating-current light emitting diode module.
2. AC illuminator as claimed in claim 1 is characterized in that, wherein above-mentioned LED crystal particle and above-mentioned protective unit are integrated on the same chip or in the same encapsulating structure.
3. AC illuminator as claimed in claim 1 is characterized in that, wherein above-mentioned LED crystal particle individually encapsulates, and is arranged on the same circuit board with above-mentioned protective unit.
4. AC illuminator as claimed in claim 1 is characterized in that, wherein above-mentioned protective unit comprises a fuse.
5. AC illuminator as claimed in claim 2 is characterized in that, wherein above-mentioned protective unit also comprises one in order to absorb the surging absorptive unit of surging and filtration electromagnetic interference.
6. AC illuminator as claimed in claim 1 is characterized in that, wherein above-mentioned diode crystal particle is connected at least two strings, and above-mentioned two string diode crystal particles are that reverse parallel connection connects.
7. AC illuminator as claimed in claim 1 is characterized in that, wherein above-mentioned diode crystal particle is connected to a string at least little luminescence unit, and each low-light bill unit comprises the above-mentioned diode crystal particle that at least two reverse parallel connections connect.
8. an AC illuminator is characterized in that, comprising:
One converts the AC-AC transformer of one second alternating voltage in order to one first alternating voltage that an AC power is provided; And
One alternating-current light emitting diode module comprises a plurality of LED crystal particles.
9. AC illuminator as claimed in claim 8 is characterized in that, wherein above-mentioned first alternating voltage is greater than or less than above-mentioned second alternating voltage.
10. an AC illuminator is characterized in that, comprising:
One pedestal;
One lamp body is arranged on the pedestal, is coupled to an AC power, and comprises at least one first group of LED crystal particle and one second group of LED crystal particle; And
One in order to carry out the protective unit of overvoltage or current protection, is arranged among said base or the lamp body.
11. AC illuminator as claimed in claim 10 is characterized in that, also comprises one in order to one second alternating voltage that above-mentioned AC power provided is converted to the AC-AC transformer of above-mentioned first alternating voltage.
12. AC illuminator as claimed in claim 10 is characterized in that, wherein above-mentioned protective unit comprises a fuse.
13. AC illuminator as claimed in claim 10 is characterized in that, wherein above-mentioned protective unit also comprises one in order to absorb the surging absorptive unit of surging and filtration electromagnetic interference.
14. an AC illuminator is characterized in that, comprising:
One alternating-current light emitting diode module comprises a plurality of LED crystal particles; And
One in order to carry out the protective unit of overvoltage or overcurrent protection, is coupled between above-mentioned AC power and the above-mentioned alternating-current light emitting diode module.
15. AC illuminator as claimed in claim 14 is characterized in that, wherein above-mentioned protective unit comprises:
One in order to carry out the fuse of overvoltage or overcurrent protection; And
One in order to absorb the surging absorptive unit of surging and filtration electromagnetic interference, and wherein above-mentioned alternating-current light emitting diode module is connected in parallel with above-mentioned surging absorptive unit by above-mentioned fuse.
CNU2008201789471U 2008-11-20 2008-11-20 AC light-emitting device Expired - Lifetime CN201297596Y (en)

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Application Number Priority Date Filing Date Title
CNU2008201789471U CN201297596Y (en) 2008-11-20 2008-11-20 AC light-emitting device

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Application Number Priority Date Filing Date Title
CNU2008201789471U CN201297596Y (en) 2008-11-20 2008-11-20 AC light-emitting device

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CN201297596Y true CN201297596Y (en) 2009-08-26

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103388758A (en) * 2013-06-26 2013-11-13 重庆恒又源科技发展有限公司 Method for adjusting brightness and color temperature of LED (light-emitting diode) lamp and LED lamp
CN103841704A (en) * 2012-11-23 2014-06-04 海洋王（东莞）照明科技有限公司 Led lamp control circuit
CN103899948A (en) * 2013-08-20 2014-07-02 华荣科技股份有限公司 Led lamp
US10312792B2 (en) 2015-12-31 2019-06-04 Coretronic Corporation Projection apparatus, power management apparatus, and method for power management thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103841704A (en) * 2012-11-23 2014-06-04 海洋王（东莞）照明科技有限公司 Led lamp control circuit
CN103388758A (en) * 2013-06-26 2013-11-13 重庆恒又源科技发展有限公司 Method for adjusting brightness and color temperature of LED (light-emitting diode) lamp and LED lamp
CN103388758B (en) * 2013-06-26 2016-03-02 重庆恒又源科技发展有限公司 The method of adjusting brightness of LED lamps and colour temperature and LED
CN103899948A (en) * 2013-08-20 2014-07-02 华荣科技股份有限公司 Led lamp
US10312792B2 (en) 2015-12-31 2019-06-04 Coretronic Corporation Projection apparatus, power management apparatus, and method for power management thereof

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Owner name: JINGYUAN OPTOELECTRONICS CO., LTD.

Free format text: FORMER OWNER: FINANCIAL GROUP LEGAL PERSON INDUSTRIAL TECHNOLOGY INST.

Effective date: 20111129

C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20111129

Address after: Hsinchu, China Taiwan Hsinchu Science Park Road five force line five

Patentee after: Jingyuan Optoelectronics Co., Ltd.

Address before: Hsinchu County, Taiwan, China

Patentee before: Industrial Technology Research Institute

CX01 Expiry of patent term

Granted publication date: 20090826

CX01 Expiry of patent term