CN101290104B - LED illuminating apparatus - Google Patents
LED illuminating apparatus Download PDFInfo
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- CN101290104B CN101290104B CN2007100396723A CN200710039672A CN101290104B CN 101290104 B CN101290104 B CN 101290104B CN 2007100396723 A CN2007100396723 A CN 2007100396723A CN 200710039672 A CN200710039672 A CN 200710039672A CN 101290104 B CN101290104 B CN 101290104B
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- led
- voltage stabilizing
- stabilizing chip
- current
- lighting device
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- 230000000087 stabilizing effect Effects 0.000 claims description 29
- 230000005669 field effect Effects 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 abstract 2
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to a LED lighting device which comprises a shell and a plurality of LEDs, wherein a plurality of series of light-emitting module groups are formed by the LEDs, both ends of each LED in the light-emitting module are connected to a breaking protective circuit (3) in parallel, the breaking protective circuit (3) comprises a current-limiting resistance (R2), two divider resistances (R3, R4) and a voltage regulator chip (IC), one end of the current-limiting resistance (R2) is respectively connected to the anode (A) of the voltage regulator chip (IC) and one end of the divider resistance (R3), the other end of the divider resistance (R3) is respectively connected to the reference pole (REF) of the voltage regulator chip (IC) and one end of the other divider resistance (4), the other end of the other divider resistance (R4) is connected to the cathode (K) of the voltage regulator chip (IC).
Description
[technical field]
The present invention relates to a kind of LED lighting device, more precisely, relate to a kind of LED lighting device with breaking protection circuit.
[background technology]
LED compare with the energy-saving lighting lamp of general photo-voltaic power supply adapted have the life-span long, heating is low, not fragile, power consumption is little and more energy-conservation outstanding advantage.Along with the LED technology, especially the great power LED technology is full-fledged, and LED has begun to be widely used in lighting field, people it be described as 21 century replace fluorescent lamps and incandescent lamp the 4th generation lighting source.
In order to satisfy the demand of people's brightness of illumination, the lighting device that with LED is light source now all comprises a lot of LEDs usually, and these LED generally form an illuminating module with the form of many series connection earlier, then with these illuminating module common integrated light source that forms the LED lighting device in parallel.Yet, there is following defective in this design: when the LEDs in a certain illuminating module damages disconnection, cause the LED of whole illuminating module do not have electric current by and can not work on, caused the waste of this illuminating module so on the one hand, also influence the illuminating effect of whole LED lighting device on the other hand to a greater extent, reduced the reliability of LED lighting device.
[summary of the invention]
Technical problem to be solved by this invention is to overcome the defective that above-mentioned prior art exists, and a kind of LED lighting device with breaking protection circuit is provided, to improve the reliability of LED lighting device.
The present invention is achieved by the following technical solutions: a kind of LED lighting device, comprise housing and some LED, wherein said LED forms some series connection illuminating module, each LED two ends breaking protection circuit in parallel in the described illuminating module, described breaking protection circuit comprises a current-limiting resistance, two divider resistances and a voltage stabilizing chip, and an end of wherein said current-limiting resistance is connected with the positive pole of voltage stabilizing chip and an end of divider resistance respectively; The other end of divider resistance is connected with the reference utmost point of voltage stabilizing chip and an end of another divider resistance respectively; The other end of described another divider resistance is connected with the negative pole of voltage stabilizing chip.
Described breaking protection circuit also comprises another current-limiting resistance and a field effect transistor; described another current-limiting resistance is series between the grid of the negative electrode of voltage stabilizing chip and field effect transistor; the source electrode of described another divider resistance and field effect transistor is connected, and the drain electrode of described current-limiting resistance and field effect transistor is connected.
Described voltage stabilizing chip is one 431 electronic devices.
Compared with prior art; the invention provides a kind of LED lighting device; by each LED two ends breaking protection circuit in parallel in each series connection illuminating module; make when some LED disconnect; this breaking protection circuit is kept the conducting of entire circuit; and make the voltage and current of entire circuit constant; effectively changed so on the one hand in the prior art and caused the out of use situation of whole illuminating module because of a LEDs damages; improved the utilization rate of resource greatly; also improve the illuminating effect of whole LED lighting device on the other hand to a certain extent, improved the reliability of LED lighting device.
[description of drawings]
Fig. 1 is the three-dimensional combination figure of LED lighting device of the present invention.
Fig. 2 is the three-dimensional exploded view of LED lighting device of the present invention.
Fig. 3 is the LED lighting device first embodiment circuit diagram of the present invention.
Fig. 4 is the LED lighting device second embodiment circuit diagram of the present invention.
[embodiment]
See also illustrated in figures 1 and 2, disclosed lighting device 8 comprises housing 1, circuit board 2, LED (not shown), lens unit 4, sealing ring 5 and light-emitting plate 6, wherein, described LED forms some series connection illuminating module and is contained in the described housing 1, described light-emitting plate 6 is fixed on the housing 1 and with described LED and encloses in this housing 1, and described LED is the configuration of spirogyrate arc surfaced towards light-emitting plate 6 directions in described housing 1.
Described housing 1 comprises a diapire 16, four sidewalls 15 and surrounds the receiving space 13 that forms by diapire 16 and sidewall 15.Described diapire 16 mediads protrude the curved base 160 that formation one is used to support described circuit board 2 outward, and 160 two orthogonal cross sections of this curved base all are evagination circular arc, and the radius of evagination circular arc can be designed to different values according to actual needs.Certainly curved base 160 also can be designed to other shapes, is evagination circular arc as curved base 160 towards the cross section of light-emitting plate 6, and in the cross section of another vertical with it direction shape linearly.In addition, also be provided with a support 11, some fin 12 on the described housing 1, described support 11 is mainly used in support fixation housing 1, it links to each other with housing 1 by screw 14, on support 11, also be provided with the location hole 110 that is used for fixing LED lighting device 8, the LED lighting device be fixed on third party's object so that pass location hole with screw etc. when using.
Below in conjunction with Fig. 3 first embodiment of LED lighting device circuit of the present invention is described in detail.
See also shown in Figure 3; the LED lighting device circuit that present embodiment disclosed comprises a breaking protection circuit 3; this breaking protection circuit 3 is parallel to each the LED two ends in the described illuminating module; one end of breaking protection circuit 3 is connected with the positive pole of LED, and the other end of breaking protection circuit 3 is connected with the negative pole of LED.Excessive for the electric current that prevents the series LED circuit, a current-limiting resistance R1 and LED are connected.Breaking protection circuit comprises current-limiting resistance R2; divider resistance R3 and R4; voltage stabilizing chip IC (the voltage stabilizing chip IC is 431 electronic devices in the present embodiment); wherein the anodal A of the end of current-limiting resistance R2 and voltage stabilizing chip IC and the end of divider resistance R3 are connected; the reference utmost point REF of the other end of divider resistance R3 and voltage stabilizing chip IC and the end of divider resistance R4 are connected, and the negative pole K of the other end of R4 and voltage stabilizing chip IC is connected.
When the inner disconnection of LED, electric current no longer passes through from LED.Voltage stabilizing chip IC and current-limiting resistance R2 replace LED and current-limiting resistance R1 to make the series circuit conducting.The output voltage of voltage stabilizing chip IC is only relevant with divider resistance R3, R4, and the size of the value by setting divider resistance R3 and divider resistance R4 makes the output voltage of voltage stabilizing chip IC equal the LED both end voltage.In the present embodiment, the resistance of divider resistance R3, R4 is preferably very big, and the electric current by divider resistance R3, R4 is several microamperes, can ignore.Under the situation that LED opens circuit, current-limiting resistance R2 and the effect of voltage stabilizing chip IC have replaced the effect of LED and current-limiting resistance R1, and this breaking protection circuit 3 replaces the LED that opens circuit on function.
Below in conjunction with Fig. 4 second embodiment of LED lighting device circuit of the present invention is described in detail.
See also shown in Figure 4; the LED lighting device circuit that present embodiment disclosed comprises a breaking protection circuit 3; this breaking protection circuit 3 is parallel to each the LED two ends in the described illuminating module; one end of breaking protection circuit 3 is connected with the positive pole of LED, and the other end of breaking protection circuit 3 is connected with the negative pole of LED.Excessive for the electric current that prevents the series LED circuit, a current-limiting resistance R1 and LED are connected.Breaking protection circuit 3 comprises current-limiting resistance R2 and R5, divider resistance R3 and R4, field effect transistor M and voltage stabilizing chip IC (the voltage stabilizing chip IC is 431 electronic devices in the present embodiment).Wherein the drain electrode of the end of current-limiting resistance R2 and field effect transistor M is connected, the anodal A of the other end and voltage stabilizing chip IC and the end of divider resistance R3 are connected, the reference utmost point REF of the other end of divider resistance R3 and voltage stabilizing chip IC and the end of divider resistance R4 are connected, the negative pole K of the other end of R4 and voltage stabilizing chip IC is connected, the grid of current-limiting resistance R5 one end and field effect transistor M is connected, and the negative pole K of the other end and voltage stabilizing chip IC is connected.
When the inner disconnection of LED, electric current no longer passes through from LED, and current-limiting resistance R2 both end voltage raises.The output voltage of voltage stabilizing chip IC is only relevant with divider resistance R3, R4, and the size of the value by setting divider resistance R3 and divider resistance R4 makes the output voltage of voltage stabilizing chip IC reach predetermined value.In the present embodiment, the resistance of divider resistance R3, R4 is preferably very big, and the electric current by divider resistance R3, R4 is several microamperes, can ignore.When field effect pipe M grid and source voltage rising, above behind the cut-in voltage, conducting between drain electrode and the source electrode.Voltage immobilizes after the field effect transistor M conducting, maintains a numerical value suitable with the LED both end voltage.This breaking protection circuit 3 replaces the LED that opens circuit on function.
The invention provides a kind of LED lighting device 8; by each LED two ends breaking protection circuit 3 in parallel in each series connection illuminating module; make when some LED disconnect; this breaking protection circuit 3 is kept the conducting of entire circuit; and make the voltage and current of entire circuit constant; effectively changed so on the one hand in the prior art and caused the out of use situation of whole illuminating module because of a LEDs damages; improved the utilization rate of resource greatly; also improve the illuminating effect of whole LED lighting device 8 on the other hand to a certain extent, improved the reliability of LED lighting device 8.
More than describing is embodiments of the invention only, forgives and can understand, and under the prerequisite that does not depart from the present invention's design, all should be included within the technical conceive of the present invention simple modification of the present invention and replacement.
Claims (3)
1. LED lighting device, comprise housing and some LED, wherein said LED forms some series connection illuminating module, it is characterized in that: each LED two ends breaking protection circuit (3) in parallel in the described illuminating module, described breaking protection circuit (3) comprises a current-limiting resistance (R2), two divider resistances (R3, R4) and a voltage stabilizing chip (IC), and an end of wherein said current-limiting resistance (R2) is connected with the positive pole (A) of voltage stabilizing chip (IC) and an end of divider resistance (R3) respectively; The other end of divider resistance (R3) is connected with the reference utmost point (REF) of voltage stabilizing chip (IC) and an end of another divider resistance (R4) respectively; The negative pole (K) of the other end of described another divider resistance (R4) and voltage stabilizing chip (IC) is connected.
2. LED lighting device as claimed in claim 1; it is characterized in that: described breaking protection circuit (3) also comprises another current-limiting resistance (R5) and a field effect transistor (M); described another current-limiting resistance (R5) is series between the grid of the negative pole (K) of voltage stabilizing chip (IC) and field effect transistor (M); described another divider resistance (R4) is connected with the source electrode of field effect transistor (M), and described current-limiting resistance (R2) is connected with the drain electrode of field effect transistor (M).
3. LED lighting device as claimed in claim 1 or 2 is characterized in that: described voltage stabilizing chip (IC) is one 431 electronic devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100396723A CN101290104B (en) | 2007-04-19 | 2007-04-19 | LED illuminating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100396723A CN101290104B (en) | 2007-04-19 | 2007-04-19 | LED illuminating apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101290104A CN101290104A (en) | 2008-10-22 |
| CN101290104B true CN101290104B (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100396723A Expired - Fee Related CN101290104B (en) | 2007-04-19 | 2007-04-19 | LED illuminating apparatus |
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| Country | Link |
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| CN (1) | CN101290104B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130213A1 (en) * | 2009-05-14 | 2010-11-18 | 浙江西子光电科技有限公司 | Led illumination device capable of open/short circuit protection and its illumination circuit |
| CN101566283B (en) * | 2009-06-01 | 2011-10-12 | 艾迪光电（杭州）有限公司 | Concentrative-driving combined LED light fitting |
| CN102076139B (en) | 2009-11-19 | 2013-12-11 | 群康科技(深圳)有限公司 | LED lighting circuit |
| CN108317419A (en) * | 2018-05-14 | 2018-07-24 | 欧阳掌坤 | A kind of LED light bar |
-
2007
- 2007-04-19 CN CN2007100396723A patent/CN101290104B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101290104A (en) | 2008-10-22 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Yamao Lighting Electric Appliances Co., Ltd. Assignor: Ningbo Andy Optoelectronic Technology Co., Ltd. Contract record no.: 2012330000118 Denomination of invention: LED illuminating device and lens support thereof Granted publication date: 20110518 License type: Exclusive License Open date: 20081022 Record date: 20120328 |
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| ASS | Succession or assignment of patent right |
Owner name: NINGBO DEJIA LIGHTING + TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: NINGBO ANDY OPTOELECTRONIC TECHNOLOGY CO., LTD. Effective date: 20120625 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Effective date of registration: 20120625 Address after: 315400 Xiao Dong Industrial Park, Zhejiang, Yuyao Patentee after: Ningbo Dejia Lighting & Technology Co., Ltd. Address before: 315400 industrial functional zone, southwest Street, Zhejiang, Yuyao Patentee before: Ningbo Andy Optoelectronic Technology Co., Ltd. |
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| ASS | Succession or assignment of patent right |
Owner name: NINGBO YAMAO LIGHTING ELECTRIC APPLIANCES CO., LTD Free format text: FORMER OWNER: NINGBO DEJIA LIGHTING + TECHNOLOGY CO., LTD. Effective date: 20130531 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130531 Address after: ZTE road 315400 Zhejiang city of Ningbo province Fenghua Xikou No. 88 Patentee after: Ningbo Yamao Lighting Electric Appliances Co., Ltd. Address before: 315400 Xiao Dong Industrial Park, Zhejiang, Yuyao Patentee before: Ningbo Dejia Lighting & Technology Co., Ltd. |
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| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Ningbo Yamao Lighting Electric Appliances Co., Ltd. Assignor: Ningbo Andy Optoelectronic Technology Co., Ltd. Contract record no.: 2012330000118 Date of cancellation: 20130509 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: NINGBO YAMAO OPTOELECTRONICS CO., LTD. Free format text: FORMER NAME: NINGBO YAMAO LIGHTING ELECTRIC APPLIANCES CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: ZTE road 315000 Zhejiang city of Ningbo province Fenghua Xikou No. 88 Patentee after: NINGBO YAMAO PHOTOELECTRIC CO., LTD. Address before: ZTE road 315400 Zhejiang city of Ningbo province Fenghua Xikou No. 88 Patentee before: Ningbo Yamao Lighting Electric Appliances Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110518 Termination date: 20160419 |