CN2425428Y - LED light-emitting device with built-in constant-current source - Google Patents
LED light-emitting device with built-in constant-current source Download PDFInfo
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- CN2425428Y CN2425428Y CN 00232665 CN00232665U CN2425428Y CN 2425428 Y CN2425428 Y CN 2425428Y CN 00232665 CN00232665 CN 00232665 CN 00232665 U CN00232665 U CN 00232665U CN 2425428 Y CN2425428 Y CN 2425428Y
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Abstract
The utility model relates to an LED light-emitting device with a built-in constant-current source. The LED light-emitting device is mainly composed of a constant-current source circuit (1), a resistor (2), an LED light-emitting diode (3), a basal plate (4), electrode lead-out wires (5), a cover shell (6) and epoxy resin (7), wherein, the working current of the LED light-emitting diode (3) is controlled by the constant-current source circuit (1). Thus, the LED light-emitting device can keep constant working current when the power supply voltage of an outer power supply has fluctuation; the light-emitting brightness also keeps unchanged all the time.
Description
The utility model relates to a kind of LED luminescent device of built-in constant-current source.
The use of LED luminescent device in the prior art, causes the damage of LED luminescent device for preventing overcurrent, be with current-limiting resistance with after the LED luminescent device is connected, insert and use in the power supply.Except series limiting resistor in circuit, also have a kind of method, exactly current-limiting resistance is encapsulated in LED luminescent device inside, so in use, just can not need again outer meeting resistance.Consult that "China Electronics News" on November 16th, 1999 published: " China LED industry Situation and development " literary composition.
Current-limiting resistance in these two kinds of methods, resistance is all fixed, in case in the place in circuit, as long as supply power voltage remains unchanged, the electric current that flows through so in the LED luminescent device also will keep stable.But in many occasions, supply voltage has fluctuation, and this just makes the electric current that flows through the LED luminescent device, will change not of uniform size occur along with the fluctuation of supply voltage, and has caused the luminous intensity of LED luminescent device bright dark irregular variation to occur.
Task of the present utility model just provides a kind ofly can be had under the situation of fluctuation at supply power voltage, remains the LED luminescent device of the built-in constant-current source of brightness unanimity.
The LED luminescent device is a kind of current mode luminescent device, and luminosity changes with electric current.As long as make the electric current that flows through the LED luminescent device keep constant, the luminosity that configures so will remain unchanged.Therefore, the LED luminescent device of employing constant current source power supply just can accomplish not to be subjected to the influence of mains ripple, remains the requirement of brightness unanimity.
Below with reference to accompanying drawing to this novel being further described.
Accompanying drawing 1 is a kind of structure cutaway view of the present utility model, the LED luminescent device of this built-in constant-current source, and by constant-current source circuit (1), resistance (2), LED light-emitting diode (3), substrate (4), electrode outlet line (5), case (6) and epoxy resin (7) are formed.Constant-current source circuit (1), resistance (2), LED light-emitting diode (3) are installed on the substrate (4), insert case (6) afterwards, seal with epoxy resin (7).The LED luminescent device of this built-in constant-current source joins by electrode outlet line (5) and external power supply (10).
From the electrical schematic diagram shown in the accompanying drawing 2, constant-current source circuit (1) is connected with LED light-emitting diode (3) as can be known, therefore the operating current of LED light-emitting diode (3) is to be subjected to constant-current source circuit (1) control, its operating current is exactly the constant current that constant-current source circuit (1) is set, so can keep a current value of setting at external power (10) when supply power voltage has fluctuation.
Assembled arrangement for varying number LED light-emitting diode (3), and different occasions are to the different requirements of LED light-emitting diode (3) luminosity, the electric current that LED light-emitting diode (3) is flow through in setting is different, for constant-current source circuit (1), change the resistance of resistance (2), just can reach the purpose that changes the constant current size, when implementing the utility model, suggestion constant-current source circuit (1) has two exits (8), (9), for outer meeting resistance (2), in order to the constant current size of adjusting constant-current source circuit (1), and the remaining circuit element of composition constant-current source circuit (1), can be made into a special module or integrated circuit, so that produce.
Seal the epoxy resin (7) of usefulness, should adopt the good material of light transmission,, can also add the dye and the agent that shines as required in epoxy resin (7) the inside.
Claims (2)
1. the LED luminescent device of a built-in constant-current source, by constant-current source circuit (1), resistance (2), LED light-emitting diode (3), substrate (4), electrode outlet line (5), case (6) and epoxy resin (7) are formed, constant-current source circuit (1), resistance (2), LED light-emitting diode (3) is installed on the substrate (4), inserts case (6) afterwards, seals with epoxy resin (7).The LED luminescent device of this built-in constant-current source joins by electrode outlet line (5) and external power supply (10), and the operating current that it is characterized in that LED light-emitting diode (3) is to be subjected to constant-current source circuit (1) control, can keep a current value of setting.
2. according to the LED luminescent device of the built-in constant-current source of claim 1, it is characterized in that constant-current source circuit (1), have two exits (8), (9) are for outer meeting resistance (2), in order to regulate the constant current size of constant-current source circuit (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00232665 CN2425428Y (en) | 2000-04-30 | 2000-04-30 | LED light-emitting device with built-in constant-current source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00232665 CN2425428Y (en) | 2000-04-30 | 2000-04-30 | LED light-emitting device with built-in constant-current source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2425428Y true CN2425428Y (en) | 2001-03-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00232665 Expired - Lifetime CN2425428Y (en) | 2000-04-30 | 2000-04-30 | LED light-emitting device with built-in constant-current source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2425428Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006074573A1 (en) * | 2005-01-12 | 2006-07-20 | Waikei Huen | Semiconductor lamp |
| US7800121B2 (en) | 2002-08-30 | 2010-09-21 | Lumination Llc | Light emitting diode component |
| CN105351759A (en) * | 2015-11-30 | 2016-02-24 | 中国振华集团永光电子有限公司（国营第八七三厂） | LED indicator light and encapsulation method thereof |
| US9841175B2 (en) | 2012-05-04 | 2017-12-12 | GE Lighting Solutions, LLC | Optics system for solid state lighting apparatus |
| US9951938B2 (en) | 2009-10-02 | 2018-04-24 | GE Lighting Solutions, LLC | LED lamp |
-
2000
- 2000-04-30 CN CN 00232665 patent/CN2425428Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7800121B2 (en) | 2002-08-30 | 2010-09-21 | Lumination Llc | Light emitting diode component |
| US8362695B2 (en) | 2002-08-30 | 2013-01-29 | GE Lighting Solutions, LLC | Light emitting diode component |
| US8436380B2 (en) | 2002-08-30 | 2013-05-07 | GE Lighting Solutions, LLC | Light emitting diode component |
| WO2006074573A1 (en) * | 2005-01-12 | 2006-07-20 | Waikei Huen | Semiconductor lamp |
| US9951938B2 (en) | 2009-10-02 | 2018-04-24 | GE Lighting Solutions, LLC | LED lamp |
| US9841175B2 (en) | 2012-05-04 | 2017-12-12 | GE Lighting Solutions, LLC | Optics system for solid state lighting apparatus |
| US10139095B2 (en) | 2012-05-04 | 2018-11-27 | GE Lighting Solutions, LLC | Reflector and lamp comprised thereof |
| CN105351759A (en) * | 2015-11-30 | 2016-02-24 | 中国振华集团永光电子有限公司（国营第八七三厂） | LED indicator light and encapsulation method thereof |
| CN105351759B (en) * | 2015-11-30 | 2018-09-28 | 中国振华集团永光电子有限公司（国营第八七三厂） | A kind of packaging method of LED light |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010328 |