CN201757288U - LED bulb - Google Patents
LED bulb Download PDFInfo
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- CN201757288U CN201757288U CN201020111677XU CN201020111677U CN201757288U CN 201757288 U CN201757288 U CN 201757288U CN 201020111677X U CN201020111677X U CN 201020111677XU CN 201020111677 U CN201020111677 U CN 201020111677U CN 201757288 U CN201757288 U CN 201757288U
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- light source
- led light
- circuit
- triode
- electric capacity
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Abstract
The utility model relates to an LED bulb comprising a radiator, a lamp holder, a protective cover and an aluminium base disposed on the radiator. The bowl-shaped radiator is provided with a constant current power supply, thereby the input end of the constant current power supply is connected with the power port of the lamp holder, and the output end is connected with the aluminium base. An LED light source array is disposed on the aluminium base, thereby the protective cover and the radiator are in a detachable connection. The constant current power supply comprises a rectification circuit, a filter circuit, a limited current circuit, and an over-current protection circuit. The input end of the rectification circuit is connected with the commercial power, and the output end is connected with the filter circuit. The output end of the filter circuit is connected with the lamp plate, which is connected with the output end of the limited current circuit and the over-current protection circuit. By using the utility model, the LED light source heat can be effectively reduced, the brightness of lamp tube can be improved, the LED light source service lifetime can be prolonged. The utility model has advantages of reasonable design, stable performance and ability of reducing the LED light decline to the minimum.
Description
Technical field
The utility model relates to a kind of lighting, a kind of specifically LED bulb that adopts led light source.
Background technology
At present, the indoor or outdoors lighting that is widely used mostly is incandescent light bulb or fluorescent tube, but the electro-optical efficiency of these two kinds of products is all lower, and caloric value is big, and service life is shorter.
The LED lighting engineering is through years of development and accumulation, shown outstanding energy-saving effect, led light source has advantages such as volume is little, energy consumption is low, caloric value is low, the life-span is long as a kind of emerging semiconductor light-emitting elements, some have therefore also occurred and has adopted the light fixture of led light source.But these light fixtures are for pursuing brightness, most high-power LED light sources that adopt.Though LED is a cold light source, when work, still can produce heat, serious decay appears in the brightness meeting at high temperature of LED lamp.These adopt the lamp light source of high-power LED light source to be in sealing state, and heat is not easy to scatter, and often promptly reaches higher temperature in the short time, causes brightness to decay fast, has a strong impact on light source life.Therefore high-power LED light source is used for the indoor or outdoors lighting and does not obtain good result, the light decay problem that causes in order to reduce heat of some producer simultaneously, and the employing low-power LED, because the brightness of low-power LED is very low, usually need a large amount of LED to carry out assembled arrangement, always caused volume excessive, the problem that power rises.
In addition, because led light source has higher requirement for the stability of power supply,, also be a major reason that influences light source life if the electric power outputting current instability also very easily causes the quick decay of LED brightness.
The utility model content
At above shortcomings part in the prior art, problem to be solved in the utility model provides a kind of rational in infrastructure, caloric value is low, the life-span is long LED bulb.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
The utility model LED bulb comprises radiator, lamp holder, protective cover and is installed in aluminium base on the radiator, wherein radiator is bowl-shape, inside is provided with constant-current supply, and the input of this constant-current supply is connected with the power interface of lamp holder, its output is connected with aluminium base; Described aluminium base is provided with the led light source array, and protective cover is connected with removably with radiator; Described aluminium base is provided with the led light source array.
Described led light source array adopts the low-power LED light source to form, and each led light source is 0.06～0.5W; Described protective cover is that hemisphere is planar.
Described constant-current supply comprises rectification circuit, filter circuit, current limliting and current foldback circuit; wherein, the input of rectification circuit links to each other with civil power, and output is connected to filter circuit; the output of filter circuit is connected to lamp plate, and the output of current limliting and current foldback circuit connects lamp plate.
Described current limliting and current foldback circuit are an oscillating circuit of being made up of first and second triode, transformer and the 5th electric capacity, wherein the base stage of first triode connects the colelctor electrode of second triode, the emitter stage of first triode connects the base stage of second triode, the emitter stage of first triode is by the 7th resistance eutral grounding, the grounded emitter of second triode, the colelctor electrode of first triode is parallel to the two ends of the 5th electric capacity respectively by the 6th diode and Secondary winding of transformer, the two ends of the 5th electric capacity link to each other with the led light source group; Elementary winding one end of transformer links to each other other end ground connection with the base stage of first triode.
First piezo-resistance and first electric capacity of connecting and having first class of protection between the live wire of described civil power and the zero line; The bleeder resistance in parallel at the first electric capacity two ends; On the live wire of mains electricity input end, be in series with anti-surge inductance.
Described filter circuit comprises second electric capacity, second inductance and second resistance, and wherein second electric capacity is connected between the output and ground of rectification circuit, and the output of rectification circuit is connected to led light source by second resistance and second inductance.
The 3rd electric capacity that has second piezo-resistance, the 5th diode of second class protection effect and have the time-delay cushioning effect also in parallel between the output of described filter circuit and the ground wire.
The present invention has following beneficial effect and advantage:
1. the utility model effectively reduces the led light source heat by adopting the rational technique scheme of power supply and many low-power LED light source LED light source consisting arrays, has improved the brightness of fluorescent tube, prolongs the led light source life-span.
2. reasonable in design, stable performance;
3. adopt the mode of aluminium radiator and lamp plate, make its heat fast and carry out exchange heat in the air, heat is distributed, guaranteed that the light decay of LED reduces to minimum.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model electrical schematic diagram.
The specific embodiment
As shown in Figure 1, LED bulb of the present invention comprises radiator 2, lamp holder 1, protective cover 5 and is installed in aluminium base 4 on the radiator 2, wherein radiator 2 is bowl-shape, and inside is provided with constant-current supply 3, and the input of this constant-current supply 3 is connected with the power interface of lamp holder 1, its output is connected with aluminium base; Described aluminium base 4 is provided with the led light source array, and protective cover 5 and radiator 2 are connected with removably; Described aluminium base 4 is provided with the led light source array.
Described led light source array adopts the low-power LED light source to form, and led light source is 0.06～0.5W.
Described protective cover 5 is that hemisphere is planar; Described constant-current supply 3 comprises rectification circuit and filter circuit, current limliting and current foldback circuit; wherein the input of rectification circuit links to each other with civil power; output is connected to filter circuit, and the output of filter circuit is connected to aluminium base 4, and the output of current limliting and current foldback circuit connects aluminium base 4.
As shown in Figure 2, current limliting and current foldback circuit are one by first, two triode Q1, Q2, the oscillating circuit that transformer TF1 and the 5th capacitor C 5 are formed, wherein the base stage of the first triode Q1 connects the colelctor electrode of the second triode Q2, the emitter stage of the first triode Q1 connects the base stage of the second triode Q2, the emitter stage of the first triode Q1 is by the 7th resistance R 7 ground connection, the grounded emitter of the second triode Q2, the colelctor electrode of the first triode Q1 is parallel to the two ends of the 5th capacitor C 5 respectively by the secondary windings of the 6th diode D6 and transformer TF1, the two ends of the 5th capacitor C 5 link to each other with the led light source group; Elementary winding one end of transformer TF1 links to each other other end ground connection with the base stage of the first triode Q1.
The first piezo-resistance RS1 and first capacitor C 1 of connecting and having first class of protection between the live wire of civil power and the zero line, the bleeder resistance R in parallel at first capacitor C, 1 two ends is in series with anti-surge inductance L 1 on the live wire of mains electricity input end;
Filter circuit comprises second capacitor C 2, second inductance L 2 and second resistance R 2, and wherein second capacitor C 2 is connected between the output and ground of rectification circuit, and the output of rectification circuit is connected to led light source by second resistance R 2 and second inductance L 2.The 3rd capacitor C 3 that has the second piezo-resistance RS2, the 5th diode D5 of second class protection effect and have the time-delay cushioning effect also in parallel between the output of filter circuit and the ground wire.
Present embodiment utilizes the first piezo-resistance RS1 at the input of civil power, as the first class of protection of load; in filter circuit, utilize the second class protection of the second piezo-resistance RS2 as load; because of piezo-resistance can be released mutation current effectively at voltage jump moment (as thunder and lightning, big consumer starting etc.); thereby protection load; the response time of piezo-resistance is generally at Millisecond; the high voltage pulse voltage of moment in the input power supply can be released over the ground, thereby protection LED is not punctured by instantaneous pressure.
First capacitor C 1 act as step-down and current limliting, the characteristic of electric capacity be logically exchange, stopping direct current, when electric capacity was connected in the alternating current circuit, its capacitive reactance computing formula was:
XC＝1/2πfC
XC represents the capacitive reactance of electric capacity in the formula, and f represents that the frequency C of input ac power represents the capacity of decompression capacitor.
The electric current computing formula that flows through capacity voltage dropping circuit is:
I＝U/XC
I represents to flow through the electric current of electric capacity in the formula, and U represents that supply voltage XC represents the capacitive reactance of electric capacity.
In the alternating current circuit of 220V, 50Hz, when load voltage was far smaller than 220V, the relational expression of electric current and electric capacity was:
The I=69C wherein unit of electric capacity is uF, and the unit of electric current is mA.
Bleeder resistance R1 act as: when sine wave when peak-peak is cut off constantly, remaining electric charge on first capacitor C 1 can't discharge, the president stored for a long time, if human body touches the metal part of first capacitor C 1 when maintenance, strong electric shock possibility is arranged, and the existence of bleeder resistance R1 can be fallen remaining charge discharging resisting, thereby guarantees man-machine safety.The resistance of bleeder resistance R1 is relevant with the size of electric capacity, and the capacity of general electric capacity is big more, and remaining electric charge is just many more, and the resistance of bleeder resistance C1 will be selected littler.
The rectifier bridge that rectification circuit adopts the first～four diode D1-D4 to constitute, its effect are to be pulsating dc voltage with AC rectification.
The filter circuit filtering High-frequency Interference that second inductance L 2, second capacitor C 2 and second resistance R 2 constitute, the effect of the 3rd capacitor C 3 is that the pulsating dc voltage after the rectification is filtered into steady DC voltage.Because first capacitor C 1 can not provide big electric current, the charging interval of the 3rd capacitor C 3 is long, so the voltage on the 3rd capacitor C 3 can not suddenly change, plays the effect and the soft start effect of protection load like this.The 5th diode D5 and the second piezo-resistance RS2 constitute pressure-sensitive holding circuit.
In the present embodiment, led light source is many groups LED assemblies in parallel, and every group of LED assembly is divided into the LED group of a plurality of series connection again, and each LED group is composed in series by a plurality of LED.The Zener diode DW that is connected in parallel of each LED group can guarantee the operate as normal of led light source.A LED group breaks down when having in the LED assembly, during corrupted, other LED group can also continue operate as normal.
LED is a kind of solid-state semiconductor devices, and the heart of LED is a semi-conductive wafer, and an end of wafer is attached on the support, and an end is a negative pole, and the other end connects the positive pole of power supply, and entire wafer is got up by epoxy encapsulation.The practical semiconductor wafer is made up of three parts, and a part is a P-type semiconductor, occupies an leading position in its hole, the inside, and the other end is a N-type semiconductor, mainly is electronics here, the middle normally SQW in 1 to 5 cycle.When electric current acted on this wafer by lead, electronics and hole just cover were pushed to SQW, and electronics will send energy with the form of photon then with hole-recombination in SQW.
In this example, described led light source array is made up of 0.1w SMD led light source.The mode of this 0.1WSMD led light source LED light source consisting array, make spread heat on every 0.1w SMDLED light source, be transmitted on the radiator 2 by aluminium base 4 again, radiator 2 carries out exchange heat with air, the heat that LED is produced distributes rapidly, and heat is concentrated in use to have solved single high-power LED light source, is difficult for the drawback of heat radiation, it is not enough also to have solved low-power LED brightness, the drawback that light decay is big.In the present embodiment, a number of 0.1w SMD led light source is not limit.
In use, when the utility model LED bulb and civil power connection, constant current constant-current supply 3 can provide stable electric current for the led light source array on the aluminium base 4, thereby the brightness that guarantees 0.1w SMD led light source array can not decay fast owing to the electric current instability, thereby has prolonged the service life of led light source.
Radiator 2 is provided with PC protective cover 5, and PC protective cover 5 is spherical, has both improved light efficiency, makes light more even simultaneously.
LED bulb of the present utility model, by adopting the constant-current source assembly, the rational technique scheme of aluminium radiator and 0.1w SMDLED light source LED light source consisting array, effectively reduce the led light source heat, prolonged the led light source life-span, improved the brightness of bulb, stable performance simultaneously, extensively adapt to various installation environments, have vast market prospect.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (10)
1. LED bulb, it is characterized in that: comprise radiator (2), lamp holder (1), protective cover (5) and be installed in aluminium base (4) on the radiator (2), wherein radiator (2) is bowl-shape, inside is provided with constant-current supply (3), and the input of this constant-current supply (3) is connected with the power interface of lamp holder (1), its output is connected with aluminium base; Described aluminium base (4) is provided with the led light source array, and protective cover (5) is connected with removably with radiator (2); Described aluminium base (4) is provided with the led light source array.
2. LED bulb according to claim 1 is characterized in that: described led light source array adopts the low-power LED light source to form, and each led light source is 0.06～0.5W.
3. by the described LED bulb of claim 1, it is characterized in that: described protective cover (5) is planar for hemisphere.
4. by the described LED bulb of claim 1; it is characterized in that: described constant-current supply (3) comprises rectification circuit, filter circuit, current limliting and current foldback circuit; wherein; the input of rectification circuit links to each other with civil power; output is connected to filter circuit; the output of filter circuit is connected to aluminium base (4), and the output of current limliting and current foldback circuit connects aluminium base (4).
5. by the described LED bulb of claim 4, it is characterized in that: described current limliting and current foldback circuit are one by first, two triode (Q1, Q2), the oscillating circuit that transformer (TF1) and the 5th electric capacity (C5) are formed, wherein the base stage of first triode (Q1) connects the colelctor electrode of second triode (Q2), the emitter stage of first triode (Q1) connects the base stage of second triode (Q2), the emitter stage of first triode (Q1) is by the 7th resistance (R7) ground connection, the grounded emitter of second triode (Q2), the colelctor electrode of first triode (Q1) is parallel to the two ends of the 5th electric capacity (C5) respectively by the secondary windings of the 6th diode (D6) and transformer (TF1), the two ends of the 5th electric capacity (C5) link to each other with the led light source group; Elementary winding one end of transformer (TF1) links to each other other end ground connection with the base stage of first triode (Q1).
6. by the described LED bulb of claim 4, it is characterized in that: first piezo-resistance (RS1) and first electric capacity (C1) of connecting and having first class of protection between the live wire of described civil power and the zero line.
7. by the described LED bulb of claim 6, it is characterized in that: bleeder resistance (R1) in parallel at first electric capacity (C1) two ends.
8. by the described LED bulb of claim 4, it is characterized in that: on the live wire of mains electricity input end, be in series with anti-surge inductance (L1).
9. by the described LED bulb of claim 4, it is characterized in that: described filter circuit comprises second electric capacity (C2), second inductance (L2) and second resistance (R2), wherein second electric capacity (C2) is connected between the output and ground of rectification circuit, and the output of rectification circuit is connected to led light source by second resistance (R2) and second inductance (L2).
10. by the described LED bulb of claim 9, it is characterized in that: the 3rd electric capacity (C3) that has second piezo-resistance (RS2), the 5th diode (D5) of second class protection effect and have the cushioning effect of delaying time also in parallel between the output of described filter circuit and the ground wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020111677XU CN201757288U (en) | 2010-02-10 | 2010-02-10 | LED bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020111677XU CN201757288U (en) | 2010-02-10 | 2010-02-10 | LED bulb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201757288U true CN201757288U (en) | 2011-03-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020111677XU Expired - Fee Related CN201757288U (en) | 2010-02-10 | 2010-02-10 | LED bulb |
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| CN (1) | CN201757288U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116431A (en) * | 2011-03-25 | 2011-07-06 | 石玉洲 | LED (light-emitting diode) down lamp |
| CN102595719A (en) * | 2012-01-31 | 2012-07-18 | 江苏好的节能光电科技有限公司 | Circuit for enhancing anti-lightning surge impact of LED street lamp |
| CN104717808A (en) * | 2015-04-02 | 2015-06-17 | 四川柏狮光电技术有限公司 | Driving power supply and assembling process of small LED filament lamp |
-
2010
- 2010-02-10 CN CN201020111677XU patent/CN201757288U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102116431A (en) * | 2011-03-25 | 2011-07-06 | 石玉洲 | LED (light-emitting diode) down lamp |
| CN102595719A (en) * | 2012-01-31 | 2012-07-18 | 江苏好的节能光电科技有限公司 | Circuit for enhancing anti-lightning surge impact of LED street lamp |
| CN104717808A (en) * | 2015-04-02 | 2015-06-17 | 四川柏狮光电技术有限公司 | Driving power supply and assembling process of small LED filament lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Chunmei Inventor before: Xiao Shiwei |
|
| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160603 Address after: 100029, Beijing, Chaoyang District cherry garden No. 28 building (cherry concentrated office area 0011) Patentee after: Beijing Zhong Jin Fu Information Technology Co., Ltd. Address before: 110141 No. 30, Hai Lu, Shenyang economic and Technological Development Zone, Liaoning, China Patentee before: Liaoning Baolin Group Energy Saving Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180612 Address after: 110000 Cang Hai Road, Shenyang economic and Technological Development Zone, Shenyang, Liaoning 30 Patentee after: Liaoning Hui rice Energy Saving Technology Co., Ltd. Address before: 100029 Cherry Blossom Garden 28, Chaoyang District, Beijing (Cherry Blossom central office 0011) Patentee before: Beijing Zhong Jin Fu Information Technology Co., Ltd. |
|
| 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: 20110309 Termination date: 20190210 |