CN201803169U - Light-emitting diode (LED) illuminator - Google Patents
Light-emitting diode (LED) illuminator Download PDFInfo
- Publication number
- CN201803169U CN201803169U CN2010205101326U CN201020510132U CN201803169U CN 201803169 U CN201803169 U CN 201803169U CN 2010205101326 U CN2010205101326 U CN 2010205101326U CN 201020510132 U CN201020510132 U CN 201020510132U CN 201803169 U CN201803169 U CN 201803169U
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- CN
- China
- Prior art keywords
- led
- light
- emitting diode
- control chip
- string
- 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.)
- Expired - Lifetime
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- Circuit Arrangement For Electric Light Sources In General (AREA)
- Led Devices (AREA)
Abstract
The utility model is applicable to the technical field of light-emitting diodes (LED), and provides a light-emitting diode (LED) illuminator, which comprises a light-emitting diode (LED) string and a light-emitting diode (LED) constant-current drive and control chip, a plurality of light-emitting diodes (LED) are cascaded to form the light-emitting diode (LED) string, the cathodal end of the light-emitting diode (LED) string is connected with the input end of the light-emitting diode (LED) constant-current drive and control chip, the earth end of the light-emitting diode (LED) constant-current drive and control chip is earthed, and the power supply pin of the light-emitting diode (LED) constant-current drive and control chip is connected with the anode of any light-emitting diode (LED) in the light-emitting diode (LED) string. Since the cathodal end of the light-emitting diode (LED) string is connected with the input end of the light-emitting diode (LED) constant-current drive and control chip and the power supply pin of the light-emitting diode (LED) constant-current drive and control chip is connected with the anode of any light-emitting diode (LED) in the light-emitting diode (LED) string, an additional constant-current power supply is not needed, in addition, the circuit structure is simple and practical, moreover, the voltage of the light-emitting diodes (LED) is stabilized, and the production cost is reduced.
Description
Technical field
The utility model belongs to the LED technical field, relates in particular to a kind of LED lighting device.
Background technology
LED is little with volume, characteristics such as power consumption is low, long service life are widely used in illumination and Display Technique field, the power supply mode of LED is generally and adopts constant current driving or constant voltage to drive two kinds at present, for constant current drive mode generally is constant-current source of each LEDs configuration, or it is the plurality of LEDs series connection is back by a constant current source power supply, the latter is the complexity that has reduced circuit design with respect to the former advantage, and has saved the cost of product.Yet, also be required to be constant-current source and drive power supply for adopting constant-current source to drive the led circuit of power supply mode.
According to the technical scheme that prior art provided, find to exist in the prior art following technical problem:
The constant-current source of prior art drives need provide extra constant current source power supply power supply.
The utility model content
The purpose of this utility model is to provide a kind of LED lighting device, and the constant-current source that is intended to solve prior art drives the problem of the constant current source power supply power supply that need provide extra.
The utility model is achieved in that a kind of LED lighting device, comprise the LED string that a plurality of LED cascades constitute, and the LED constant current drives control chip;
The cathode terminal of described LED string is connected with the input that the LED constant current drives control chip, and described LED constant current drives the earth terminal ground connection of control chip;
The energization pins that described LED constant current drives control chip is connected with the anode of any one LED during described LED goes here and there.
Further, described LED string drives the control chip overall package with the LED constant current.
The utility model is connected with the input that the LED constant current drives control chip by the cathode terminal with the LED string, and the energization pins that the LED constant current is driven control chip is connected with the anode of any one LED during LED goes here and there, not needing to realize extra constant current source power supply power supply, in addition, circuit structure is simple and practical, and the voltage of stable LED has reduced production cost.
Description of drawings
Fig. 1 is the structure chart of the LED lighting device that provides of the utility model embodiment.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
In the structure of the LED lighting device that the utility model embodiment provides, the cathode terminal of LED string is connected with the input that the LED constant current drives control chip, and the anode of any one LED in the energization pins that the LED constant current is driven control chip and the LED string is connected, and realization does not need extra constant current source power supply power supply.
Fig. 1 shows the structure chart of the LED lighting device that the utility model embodiment provides.
The structure chart of the LED lighting device that the utility model embodiment provides:
Comprise the LED string that a plurality of LED cascades constitute, and LED constant current driving control chip U1, wherein:
The cathode terminal of above-mentioned LED string is connected with the input that the LED constant current drives control chip U1, the LED constant current is driven the earth terminal ground connection of control chip U1, and the energization pins that the LED constant current is driven control chip U1 is connected with the anode of any one LED during above-mentioned LED goes here and there.
In the utility model embodiment, utilized the LED forward voltage characteristic to drive power supply to constant-current source.
As an embodiment of the present utility model, above-mentioned LED string drives control chip U1 with the LED constant current and carries out overall package, and is user-friendly, very hommization.
The utility model is connected with the input that the LED constant current drives control chip by the cathode terminal with the LED string, and the energization pins that the LED constant current is driven control chip is connected with the anode of any one LED during LED goes here and there, not needing to realize extra constant current source power supply power supply, in addition, circuit structure is simple and practical, and the voltage of stable LED has reduced production cost.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (2)
1. a LED lighting device comprises the LED string that a plurality of LED cascades constitute, and LED constant current driving control chip, it is characterized in that,
The cathode terminal of described LED string is connected with the input that the LED constant current drives control chip, and described LED constant current drives the earth terminal ground connection of control chip;
The energization pins that described LED constant current drives control chip is connected with the anode of any one LED during described LED goes here and there.
2. device as claimed in claim 1 is characterized in that, described LED string drives the control chip overall package with the LED constant current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205101326U CN201803169U (en) | 2010-08-30 | 2010-08-30 | Light-emitting diode (LED) illuminator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205101326U CN201803169U (en) | 2010-08-30 | 2010-08-30 | Light-emitting diode (LED) illuminator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201803169U true CN201803169U (en) | 2011-04-20 |
Family
ID=43872667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205101326U Expired - Lifetime CN201803169U (en) | 2010-08-30 | 2010-08-30 | Light-emitting diode (LED) illuminator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201803169U (en) |
-
2010
- 2010-08-30 CN CN2010205101326U patent/CN201803169U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 Guangdong City, Nanshan District province high tech in the middle of the two road, No. 2 Shenzhen International Software Park, room 201-205, room, 4 (only office) (222-226) Patentee after: Shenzhen mayor express Semiconductor Technology Co., Ltd. Address before: 518000, No. 2, building 4, two software park, central science and technology zone, Nanshan District hi tech Zone, Guangdong, Shenzhen Patentee before: Shenzhen CYT Optoelectronic Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110420 |