CN201246709Y - Bar-shaped light fitting - Google Patents
Bar-shaped light fitting Download PDFInfo
- Publication number
- CN201246709Y CN201246709Y CNU2008201518681U CN200820151868U CN201246709Y CN 201246709 Y CN201246709 Y CN 201246709Y CN U2008201518681 U CNU2008201518681 U CN U2008201518681U CN 200820151868 U CN200820151868 U CN 200820151868U CN 201246709 Y CN201246709 Y CN 201246709Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
A strip lamp comprises a luminous module and an electronic transformer. The electronic transformer comprises a rectifier filter unit, a voltage conversion unit, a switch unit, a control unit, a constant voltage-current unit and an output unit, wherein the rectifier filter unit is provided with an electric bridge formed by four diodes, and the anode input of the output unit is positively and serially connected with a unilateral connecting diode. The luminous module adopts a LED luminous module. The strip lamp adopts a LED luminous module to save more electricity without reducing illumination performance, and arranges an electric bridge on the rectifier filter unit and a unilateral connecting diode at the anode input of the output unit, to form fixed anode and cathode at two output ends of the output unit, and improve stability, thus supporting the application of the LED luminous module.
Description
[technical field]
The utility model relates to lighting engineering, or rather, relates to a kind of strip lamp.
[background technology]
Along with the development and maturation of LED technology, the performance indications of LED increase substantially day by day.At present, the light efficiency of white light LEDs has has met or exceeded the light efficiency level of ordinary incandescent lamp, and luminous flux is also increasing considerably, make with environmental protection, energy-conservation be that the LED of feature has obtained using widely at lighting field.
At present, because incandescent lamp exists power consumption big, producing shortcomings such as heat is many must be eliminated by society gradually, and the appearance of fluorescent lamp has just substituted the use of incandescent lamp gradually, become one of maximum product of use in the room lighting, but fluorescent lamp its energy-conservation efficient with respect to the LED illumination is still lower, therefore is necessary to develop new LED room lighting product to substitute existing fluorescent lamp.The utility model just is being based on this kind real current situation and demand produces.
[utility model content]
Technical problem to be solved in the utility model is to overcome the defective that prior art exists, and a kind of not only environmental protection and energy saving, but also reliable and stable strip lamp are provided.
The utility model is achieved through the following technical solutions: a kind of strip lamp, comprise illuminating module and electronic transformer, described electronic transformer comprises rectification filtering unit, voltage transformation module, switch element, control module, constant voltage constant current unit and output unit, described rectification filtering unit is connected with voltage transformation module, described voltage transformation module is connected with described rectification filtering unit and output unit, described switch element is connected with control module and voltage transformation module, described control module and voltage transformation module, constant voltage constant current unit and switch element are connected, described constant voltage constant current unit is connected with output unit and control module, described output unit is connected with voltage transformation module and illuminating module, described rectification filtering unit is provided with an electric bridge of being made up of four diodes, the connect diode of a unidirectional conducting of the electrode input end forward of described output unit, described illuminating module is the LED illuminating module.
Described LED illuminating module comprises some LED series connection bars, and described LED series connection bar is formed by some LED series connection, and is connected in parallel on two outputs of described electronic transformer output unit.
Compared with prior art, the utility model strip lamp adopts the LED illuminating module, can save more electric energy when reaching same lighting requirement; In addition, by an electric bridge is set at rectification filtering unit, make the extrinsic current alternating current change direct current into, and dispose the diode of a unidirectional conducting at the electrode input end of described output unit, the electric current that flows into output unit is carried out unidirectional rectification, make two outputs of described output unit form fixing both positive and negative polarity, and more stable, thereby help that the LED illuminating module is more smooth must work.
[description of drawings]
Fig. 1 is the circuit block diagram of the utility model strip lamp.
Fig. 2 is the circuit diagram of the utility model strip lamp.
[specific embodiment]
See also shown in Figure 1, a kind of strip lamp 8 comprises illuminating module 1 and electronic transformer 2, in the present embodiment, described illuminating module 1 is the LED illuminating module, and described electronic transformer 2 comprises external power input 20, EMI filter unit 21, rectification filtering unit 22, voltage transformation module 23, constant voltage constant current unit 24, control module 25, switch element 26, reaches output unit 27.Described EMI filter unit 21 inputs are connected with described external power input 20, are mainly used in to suppress the external world and the electromagnetic interference of self.Described EMI filter unit 21 outputs are connected with described rectification filtering unit 22 inputs, export after converting direct current and filtering to behind the signal rectification that described rectification filtering unit 22 transmits EMI filter unit 21.
Described voltage transformation module 23 is connected with described rectification filtering unit 22, switch element 26 and output unit 27, described voltage transformation module 23 receives the signal that described rectification filtering unit 22 spreads out of, under the control of described switch element 26, carry out voltage transitions, and the voltage after will changing is passed to output unit 27, described voltage transformation module 23 also is connected with described control module 25, for control module 25 provides power supply; Described switch element 26 is connected with described voltage transformation module 23 and described control module 25, the control of described switch element 26 controlled unit 25 by or conducting, and thereby control the voltage transitions of described voltage transformation module 23; Described constant voltage constant current unit 24 is connected with described output unit 27 and described control module 25, and described constant voltage constant current unit 24 is used to gather the voltage signal of output unit 27 and relatively produces a feedback signal in the back with a reference voltage; Described control module 25 is connected with described voltage transformation module 23, switch element 26 and constant voltage constant current unit 24, mainly start to control to make and use, described control module 25 receives the feedback signal that described constant voltage constant current unit 24 spreads out of, thereby control ending or conducting of described switch element 26, described voltage transformation module 23 provides power supply for described control module 25, described control module 25 1 ends also are connected with described rectification filtering unit 22 1 outputs, are used to gather signal.
Described output unit 27 is connected with described constant voltage constant current unit 24, voltage transformation module 23 and illuminating module 1, described output unit 27 is used to receive the voltage after voltage transformation module 23 conversion, and it is transferred to illuminating module 1, make illuminating module 1 operate as normal.Described illuminating module 1 is connected with described output unit 27, and described illuminating module 1 comprises the LED series connection bar 11 that some LED10 are composed in series, and described LED series connection bar 11 is connected in parallel on two outputs of described output unit 27.
See also shown in Figure 2ly, described EMI filter circuit 21 is by piezo-resistance RV, capacitor C 1, C2, and wave filter L1 forms, and described piezo-resistance RV is mainly used in the damage that the protection voltage instantaneous is brought circuit when increasing.Wherein, described capacitor C 1 and described piezo-resistance RV are connected in parallel on the two ends of described input 20, described wave filter L1 is connected with described input 20, capacitor C 1 and the tie point of piezo-resistance RV on one side, the another side of described wave filter is connected with another tie point of described input 20, capacitor C 1 and piezo-resistance RV, and described capacitor C 2 is connected in parallel on the output on described wave filter L1 both sides.
Described rectification filtering unit 22 comprises inductance L 2, by the electric bridge that D1, D2, D3 and D4 form, and filter capacitor C3 and thermistor RT.Wherein, one pin of described inductance L 2 is connected with described EMI filter unit 21 wave filter L1 one side output, described inductance L 2 another pin are connected with described electric bridge input 1 end, described EMI filter unit 21 wave filter L1 another side outputs are connected with described bridge circuit input 3 ends, described electric bridge output 2 ends are connected with described filter capacitor C3 positive pole, described bridge circuit output 4 ends are connected with described filter capacitor C3 negative pole, the described electric bridge thermistor RT that connects with anodal tie point one end of described filter capacitor C3, described electric bridge and described filter capacitor C3 minus earth.
Described voltage transformation module 23 comprises high frequency transformer, and resistance R 3 and diode D6, described high frequency transformer comprise former limit T1, the first secondary T2 and the second secondary T3.Wherein, the former limit of described high frequency transformer T1 pin 1 is connected with the thermistor RT of described rectification filtering unit 22, the former limit of described high frequency transformer T1 pin 2 is connected with described control module 25, described high frequency transformer secondary T2 pin 6 is connected with described output unit 27 with pin 8, described high frequency transformer secondary T3 pin 3 first series resistance R3 are forward series diode D6 again, described high frequency transformer secondary T3 pin 4 ground connection.
Described switch element 26 comprises diode D5, resistance R 2 and capacitor C 4.Wherein, described diode D5 is anodal to be connected with the former limit of the high frequency transformer of described voltage transformation module 23 T1 pin 2, described diode D5 negative pole is connected with described capacitor C 4 positive poles, described capacitor C 4 negative poles are connected between described rectification filtering unit 22 thermistor RT and the former limit of the described high frequency transformer T1 pin 1, a resistance R 2 in parallel between the described capacitor C 4.
Described control module 25 comprises control chip IC1, resistance R 1 and R4 and capacitor C 5 and C6, described control chip IC1 pin 6, pin 7 links to each other with the anodal tie point of the former limit of described high frequency transformer T1 pin 2 with described switch element 26 diode D5 with pin 8, described control chip IC1 pin 2 links to each other with the negative pole of diode D6 on being connected on described high frequency transformer secondary T3 pin 3, described control chip IC1 pin 1 ground connection, described capacitor C 5 in parallel between described control chip IC1 pin 2 and the pin 1, the described capacitor C 6 back ground connection of described control chip IC1 pin 3 series connection, the described resistance R 4 back ground connection of described control chip IC1 pin 4 series connection are connected between described rectification filtering unit 22 thermistor RT and the described switch element 26 after the described resistance R 1 of described control chip IC1 pin 5 series connection.
Described output circuit 23 comprises diode D7, capacitor C 8 and C9 and inductance L 3.Wherein, described diode D7 is anodal to be connected with described high frequency transformer secondary T2 pin 8, described capacitor C 9 in parallel between described diode D7 negative pole and described high frequency transformer secondary T2 pin 6, described capacitor C 8 in parallel between the described diode D7 described inductance L 3 of connecting with an end of described capacitor C 9 tie points, described inductance L 3 one ends and described capacitor C 9 and described high frequency transformer secondary T2 pin 6 tie points one end.
Described constant voltage constant current unit 24 comprises resistance R 6, R7, R8, R9, R10 and R11, capacitor C 10 and C11, voltage-stabiliser tube Q3 and photo-coupler IC2.Wherein, described constant voltage constant current unit 24 1 inputs are connected between described capacitor C 9 and described high frequency transformer secondary T2 pin 6 tie points and the described inductance L 3,24 1 inputs connect described resistance R 6 backs and described voltage-stabiliser tube Q3 end 1 in described constant voltage constant current unit links to each other, described resistance R 7 one pin are connected between described constant voltage constant current unit 24 inputs and the described resistance R 6, and these resistance R 7 another pin are connected described photo-coupler IC2 input anode.Described constant voltage constant current unit 24 another inputs are connected between the tie point and described constant voltage constant current unit 24 cathode output ends of described inductance L 3 and described capacitor C 8,24 another inputs connect described resistance R 10 backs and described voltage-stabiliser tube Q3 end 2 in described constant voltage constant current unit links to each other, described voltage-stabiliser tube Q3 holds 3 ground connection, the series circuit of described resistance R 9 in parallel and described resistance R 11 between described voltage-stabiliser tube Q3 end 2 and the voltage-stabiliser tube Q3 end 3, described voltage-stabiliser tube Q3 end 2 and described resistance R 9 tie points and described voltage-stabiliser tube Q3 hold the series circuit of described resistance R 8 in parallel and described capacitor C 11 between 1, described resistance R 6, resistance R 8 links to each other with photo-coupler IC2 negative input with the tie point of voltage-stabiliser tube Q3 end 3.Described photo-coupler IC2 output one end ground connection, the other end links to each other with described control chip IC1 pin 3.
The electrode input end of described illuminating module 1 links to each other with the cathode output end of described output unit 27, and the negative input of described optical mode group 1 links to each other with the cathode output end of described output unit 27.
When described input 20 is connected the extrinsic current alternating current, electric current is delivered to described EMI filter unit 21 through fuse F1, arrive electric bridge input 1 end if filtered electric current is anodal through inductance L 2, arrive electric bridge output 2 ends behind the electric current process diode D4 of arrival electric bridge input 1 end; If EMI filter unit 21 filtered electric current positive poles reach electric bridge output 2 ends after flowing directly into electric bridge input 3 ends process diode D1, the electric current part of electric bridge output 2 ends output flows into the positive pole of capacitor C 3, and another part flows into thermistor RT.Flow into the former limit of the high frequency transformer T1 pin 1 of described voltage transformation module 23 through the electric current that flows out behind the thermistor RT, positive current flows into the diode D5 positive pole of described switch element 26 behind the former limit T1 of electric current process high frequency transformer, an electric current part that flows out from diode D5 flows into resistance R 2, another part flows into the positive pole of capacitor C 4, converge electric current that back and thermistor RT flow out through resistance R 2 and capacitor C 4 and converge and flow into the former limit of high frequency transformer T1 pin 1 again, constitute a current loop.The former limit T3 of high frequency transformer is subjected to the former limit T1 induction of high frequency transformer to produce electric current, electric current is anodal to arrive diode D6 positive pole through resistance R 3 backs, flow into the control chip IC1 pin 2 of described control module 25 through the electric current part of diode D6 outflow, working power is provided for control chip IC1, another part flows into capacitor C 5 back ground connection.
The former limit T2 of high frequency transformer is subjected to the former limit T1 induction of high frequency transformer to produce electric current, the anodal commutation diode D7 that flows into described output unit 27 of electric current, electric current part after the unidirectional rectification of diode D7 flows into current-limiting inductance L3, another part capacitor C 9 back ground connection of flowing through, an electric current part that flows out from current-limiting inductance L3 flows into capacitor C 8, and another part arrives the cathode output end of described output unit 27.One input of described constant voltage constant current unit 24 carries out signals collecting to the current input terminal of inductance L 3, a signal part of gathering flows into the positive input terminal of photo-coupler IC2 through resistance R 7 backs, another part flows into resistance R 6, another input of described constant voltage constant current unit 24 carries out signals collecting to the cathode output end of output unit 27, signal after the collection is through after the resistance R 10, wherein a part of signal capacitor C 11 back of flowing through arrives resistance R 8, another part forms shunting again, a signal part that forms shunting again flows into voltage-stabiliser tube Q3 end 2, another part arrives resistance R 11 through resistance R 9, a signal part that flows out through resistance R 11 flows into voltage-stabiliser tube Q3 end 3, and another part is ground connection after capacitor C 10.The signal that signal that the signal that resistance R 8 flows out, resistance R 6 flow out and photo-coupler IC2 negative pole flow out merges together and flows into voltage-stabiliser tube Q3 end 1.When electric voltage frequency that collects when an end of constant voltage constant current unit 24 and reference voltage frequency have drop, photo-coupler IC2 and voltage-stabiliser tube Q3 have electric current to flow through, luminous and the generation signal of photo-coupler IC2, the signal that produces is transferred to control chip, control chip sends control command to switch element 26, thereby adjust the electric voltage frequency of output unit 27, make it reach stable voltage.
After producing a burning voltage between the described electronic transformer 2 output units 27 output positive-negative output ends, the positive current of described output unit 27 outputs flows into the positive pole of described illuminating module 1, the electric current that flows into described illuminating module 1 is divided into flow through each LED series connection bar 11 of described illuminating module 1 of several portions, make LED luminous, be gathered together the negative pole that flows into described illuminating module 1 then, arrive the negative pole of described output unit 27 again, constitute a loop.Described illuminating module 1 operate as normal under the effect of its corresponding voltage.
The electronic transformer 2 of the utility model strip lamp 8 is by being provided with a rectification filtering unit 22, the extrinsic current alternating current is transformed into direct current, direct current is through flowing into the input of described output unit 27 behind a series of circuit of described electronic transformer 2, the diode D3 of one unidirectional conducting is set at the electrode input end of described output unit 27, the electric current that flows into described output unit 27 positive poles is carried out unidirectional rectification, make described output unit 27 outputs form fixing both positive and negative polarity, and under the effect of the diode D3 of unidirectional conducting, make output positive and negative charge more stable, work more smoothly thereby help the LED illuminating module.
More than describing is embodiment of the present utility model only, forgives and can understand, and under the prerequisite that does not depart from the utility model design, all should be included within the technical conceive of the present utility model simple modification of the present utility model and replacement.
Claims (2)
1. strip lamp, comprise illuminating module and electronic transformer, described electronic transformer comprises rectification filtering unit, voltage transformation module, switch element, control module, constant voltage constant current unit and output unit, described rectification filtering unit is connected with voltage transformation module, described voltage transformation module is connected with described rectification filtering unit and output unit, described switch element is connected with control module and voltage transformation module, described control module and voltage transformation module, constant voltage constant current unit and switch element are connected, described constant voltage constant current unit is connected with output unit and control module, described output unit is connected with voltage transformation module and illuminating module, it is characterized in that: described rectification filtering unit is provided with an electric bridge, described electric bridge is made up of four diodes, the connect diode of a unidirectional conducting of the electrode input end forward of described output unit, described illuminating module is the LED illuminating module.
2. strip lamp as claimed in claim 1 is characterized in that: described LED illuminating module comprises some LED series connection bars, and described LED series connection bar is formed by some LED series connection, and is connected in parallel on two outputs of described electronic transformer output unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201518681U CN201246709Y (en) | 2008-08-12 | 2008-08-12 | Bar-shaped light fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201518681U CN201246709Y (en) | 2008-08-12 | 2008-08-12 | Bar-shaped light fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201246709Y true CN201246709Y (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201518681U Expired - Fee Related CN201246709Y (en) | 2008-08-12 | 2008-08-12 | Bar-shaped light fitting |
Country Status (1)
| Country | Link |
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| CN (1) | CN201246709Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110784095A (en) * | 2019-10-31 | 2020-02-11 | 深圳市奥拓电子股份有限公司 | High-efficiency switching power supply circuit and LED display screen |
-
2008
- 2008-08-12 CN CNU2008201518681U patent/CN201246709Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110784095A (en) * | 2019-10-31 | 2020-02-11 | 深圳市奥拓电子股份有限公司 | High-efficiency switching power supply circuit and LED display screen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20120628 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120628 Address after: 315400 Xiao Dong Industrial Park, Zhejiang, Yuyao Patentee after: Ningbo Dejia Lighting & Technology Co., Ltd. Address before: 315400 Zhejiang Yuyao southwest Street industrial functional area Ningbo Andy Photoelectric Technology Co., Ltd. Patentee before: Ningbo Andy Optoelectronic Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090527 Termination date: 20120812 |