CN203190114U - LED lamp tube - Google Patents
LED lamp tube Download PDFInfo
- Publication number
- CN203190114U CN203190114U CN2013200985220U CN201320098522U CN203190114U CN 203190114 U CN203190114 U CN 203190114U CN 2013200985220 U CN2013200985220 U CN 2013200985220U CN 201320098522 U CN201320098522 U CN 201320098522U CN 203190114 U CN203190114 U CN 203190114U
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- China
- Prior art keywords
- electric power
- emitting diode
- lamp tube
- circuit board
- light
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Abstract
An LED lamp tube is composed of a lamp tube body, an annular coil and a circuit board, wherein the lamp tube body comprises a containing space and an electric power connecting part arranged at one end of the lamp tube body to receive alternating-current electric power; the annular coil is arranged in the containing space and comprises an annular iron core, a primary winding wound on the annular iron core and connected with the electric power connecting part to receive the alternating-current electric power, and a secondary winding wound on the annular iron core and coupled with the primary winding to output non-harmonic alternating-current electric power; the circuit board is also arranged in the containing space and comprises a projection face and an assembling face, wherein the projection face comprises at least one LED which is arranged in a linear mode, and the assembling face comprises a plurality of electric connecting points and performs rectifying and obtains electric power through the secondary winding to enable the LED to emit light. The LED lamp tube can provide steady electric power to drive the LED and avoid waste heat accumulation.
Description
Technical field
The utility model relates to a kind of light-emitting diode lamp tube, refers to a kind of light-emitting diode lamp tube that stable power is provided with loop coil replacement electron rectifier especially.
Background technology
Light emitting diode is obtained gradually to have now with the tungsten filament alight and is steeped with the characteristic of its high brightness, low power consuming and long service life, is widely used on the light fixture.
The general light fixture of implementing with light emitting diode, usually utilize an electronic type rectifier to convert obtained external communication electric power to a direct current electric power, make this light emitting diode electrified light emitting, yet, a certain size volume of the common tool of above-mentioned electronic type rectifier, the lamp interior that accounts for space greatly partly causes the thermal convection current space of lamp interior to be reduced, and makes used heat lodge in lamp interior easily.Thus, the situation of operation irregularity just takes place in this electronic type rectifier easily because of heat, and overheated except can making this electronic type rectifier damage, the drive current that this unusual institute of electronic type rectifier modulation goes out also makes this light emitting diode burn easily.That is to say that with the light fixture that this electronic type rectifier is implemented, the maximum reason of its damage is no more than the damage of this electronic type rectifier, and makes lamp life often be lower than this lifetime of LED.On the other hand, this electronic type rectifier is implemented with high frequency usually, as easy as rolling off a log circuit board generation high-frequency harmonic and the electromagnetic interference (EMI) affiliated with light fixture, and this high-frequency harmonic and electromagnetic interference and be unfavorable for the luminous of this light emitting diode, be that this noise harmonic wave just can disturb the enforcement of light emitting diode because former pioneer includes big and small noise harmonic wave in galvanic current when high-frequency harmonic and electromagnetic interference.
The utility model content
Main purpose of the present utility model is to provide a kind of light-emitting diode lamp tube that stable power is provided with loop coil.
For reaching above-mentioned purpose, the utility model provides a kind of light-emitting diode lamp tube, and this light-emitting diode lamp tube is by a fluorescent tube, and a loop coil and circuit board institute fabric form.This fluorescent tube includes an accommodation space that runs through this fluorescent tube, and one is arranged at the electric power connection part that this fluorescent tube one end and an external communication electric power source are connected and accept an alternating electromotive force.This loop coil is arranged in this accommodation space a end that should electric power connection part, comprise an annular core, one is set around on this annular core and is connected to accept the elementary winding of this alternating electromotive force with this electric power connection part, and one is set around this loop coil and forms the secondary windings of no this alternating electromotive force of harmonic wave of magnetic coupling output with this elementary winding.This circuit board is arranged in this accommodation space equally, include a projection surface and a fitting surface, include at least one on this projection surface and be linearly aligned light emitting diode, this fitting surface then includes a plurality of electrical contacts and obtains electric power with this secondary windings certainly and carry out rectification and make this lumination of light emitting diode.
In an embodiment, this electric power connection part is a joining base.
In an embodiment, this loop coil includes mutual correspondence and covers one first shell and one second shell that the back isolates this elementary winding and secondary windings.
In an embodiment, this circuit board includes the reflector layer of coating this projection surface.
In an embodiment, this circuit board includes a heat dissipation element that is arranged at this lumination of light emitting diode used heat that process produces that is provided with on this fitting surface leaving.
In an embodiment, this circuit board includes one and is arranged on this fitting surface and accepts electric power and make the driver module that the electric power modulation drives this light emitting diode from this electrical contact.
The utility model said structure has following characteristics compared to existing embodiment:
One, provide stable power to drive light emitting diode.The magnetic closed loop characteristic that this loop coil of the utility model mat itself has overcomes the problem of electromagnetic interference, and with the characteristic of the preferable chokes of this loop coil tool and then the power for operation of no harmonic wave can be provided.
Two, avoid used heat to accumulate.This loop coil of the utility model mat replaces existing electronic type rectifier, and this loop coil volume is less, that is to say that the accommodation space volume of shared this fluorescent tube of this loop coil is less, and is conducive to dispersing of used heat.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to restriction of the present utility model.
Description of drawings
Fig. 1 is the structural representation of the utility model light-emitting diode lamp tube one embodiment;
Fig. 2 is the structure cut-away view of the utility model light-emitting diode lamp tube one embodiment;
Fig. 3 is the toroidal coil structure schematic diagram of another embodiment of the utility model light-emitting diode lamp tube.
Wherein, Reference numeral
1 fluorescent tube
11 accommodation spaces
12 electric power connection parts
2 loop coils
21 annular cores
22 elementary windings
23 secondary windings
24 first shells
25 second shells
241,251 perforation
3 circuit boards
31 projection surfaces
311 light emitting diodes
321 electrical contacts
32 fitting surfaces
322 heat dissipation elements
323 driver modules
33 reflector layers
The specific embodiment
Below in conjunction with the drawings and specific embodiments technical solutions of the utility model being described in detail, further understanding the purpose of this utility model, scheme and effect, but is not the restriction as the utility model claims protection domain.
Relate to detailed description of the present utility model and technology contents, now be described as follows with regard to conjunction with figs.:
See also Fig. 1 and Fig. 2, the utility model light-emitting diode lamp tube is to be formed by a fluorescent tube 1, one loop coil 2 and 3 fabrics of a circuit board.This fluorescent tube 1 includes an accommodation space 11 that runs through this fluorescent tube 1, and one is arranged at the electric power connection part 12 that these fluorescent tube 1 one ends and an external communication electric power source (this figure does not show) are connected and accept an alternating electromotive force.The enforcement aspect of this electric power connection part 12 is different according to the enforcement of this fluorescent tube, only gives an example with a joining base in this, but not as limit.In addition, this fluorescent tube 1 of the utility model may further be a light-transmitting materials and makes through machinings such as blowings.This loop coil 2 is arranged in this accommodation space 11 a end that should electric power connection part 12, this loop coil 2 comprises an annular core 21 and is set around an elementary winding 22 and a level winding 23 on this annular core 21, this elementary winding 22 is connected with electric power connection part 12 on this fluorescent tube 1, accepting this obtained alternating electromotive force of this electric power connection part 12,23 of this secondary windings and this elementary winding 22 form this alternating electromotive force of the no harmonic wave of magnetic couplings output.This circuit board 3 is arranged in this accommodation space 11, include a projection surface 31 and a fitting surface 32, include at least one linearly aligned light emitting diode 311 that is on this projection surface 31,32 of this fitting surfaces include a plurality of electrical contacts 321, those electrical contacts 321 are connected with this secondary windings 23 respectively, and this secondary windings 23 is obtained electric power and carried out rectification and make this light emitting diode 311 luminous certainly.Thus, the utility model is the problem that these loop coil 2 magnetic closed loop characteristics that have of mat own overcome electromagnetic interference, and this loop coil 2 has the characteristic that volume is little, the chokes performance is good and then the power for operation of no harmonic wave can be provided, and has overcome the existing shortcoming of implementing with the electronic type rectifier.
Further, this circuit board 3 more includes the reflector layer 33 of coating this projection surface 31, the light that these reflector layer 33 these light emitting diodes 311 of reflection of mat are launched, and allow the brightness of this light-emitting diode lamp tube be promoted, the embodiment of this reflector layer 33 is many, can be coated with the mode that reflects paint vehicle or assemble a reflector and implement.In addition, this circuit board 3 more includes a heat dissipation element 322 that is arranged at this light emitting diode 311 used heat that produces in luminescence process that is provided with on this fitting surface 32 leaving, the aspect of this heat dissipation element 322 is many, can be as shown in the utility model figure, but not as limit.This circuit board 3 more can comprise a driver module 323 that is arranged on this fitting surface 32 except can having this heat dissipation element 322,
This driver module 323 is accepted electric power and made the electric power modulation from this electrical contact 321, and is luminous to drive this light emitting diode 311.
And see also Fig. 3, this loop coil 2 can further include one first shell 24 and one second shell 25, this first shell 24 and this second shell 25 form outward appearance that should annular core 21 respectively, this first shell 24 is cut a hole respectively with this second shell 25 and is provided with a perforation 241,251, and this perforation 241,251 wears for the end of this elementary winding 22 with this secondary windings 23 respectively.Form an insulating protective layer after this first shell 24 and these second shell, 25 relative bondings, this insulating protective layer has been isolated this elementary winding 22 and this secondary windings 23, effectively avoid the generation of electromagnetic interference, by this, to provide more pure electric power for light emitting diode 311 luminous uses.
In sum, the utility model light-emitting diode lamp tube is formed by a fluorescent tube, a loop coil and circuit board institute fabric.This fluorescent tube comprises an accommodation space and and is located at this fluorescent tube one end to accept the electric power connection part of an alternating electromotive force.This loop coil is located in this accommodation space, comprise an annular core, one is around on this annular core and is connected to accept the elementary winding of this alternating electromotive force with this electric power connection part, and one is around on this annular core and forms the secondary windings of no this alternating electromotive force of harmonic wave of magnetic coupling output with this elementary winding.This circuit board is arranged in this accommodation space equally, comprise a projection surface and a fitting surface, this projection surface comprises at least one linearly aligned light emitting diode that is, and this fitting surface then comprises a plurality of electrical contacts and obtains electric power with this secondary windings certainly and carry out rectification and make this lumination of light emitting diode.Accordingly, the utility model replaces existing electronic type rectifier with this annular core, the magnetic closed loop characteristic that is had with this loop coil itself overcomes the problem of electromagnetic interference, and provides the power for operation of no harmonic wave with the good characteristic of chokes performance, overcomes the problem that existing structure is derived.
Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (6)
1. a light-emitting diode lamp tube is characterized in that, comprising:
One fluorescent tube includes an accommodation space that runs through this fluorescent tube, and one is arranged at the electric power connection part that this fluorescent tube one end and an external communication electric power source are connected and accept an alternating electromotive force;
One loop coil, be arranged in this accommodation space a end that should electric power connection part, comprise an annular core, one is set around on this annular core and is connected to accept the elementary winding of this alternating electromotive force with this electric power connection part, and one is set around this loop coil and forms the secondary windings of no this alternating electromotive force of harmonic wave of magnetic coupling output with this elementary winding;
One circuit board, be arranged in this accommodation space, include a projection surface and a fitting surface, this projection surface includes at least one linearly aligned light emitting diode that is, and this fitting surface then includes a plurality of electrical contacts and obtains electric power with this secondary windings certainly and carry out rectification and make this lumination of light emitting diode.
2. according to the described light-emitting diode lamp tube of claim 1, it is characterized in that this electric power connection part is a joining base.
3. according to the described light-emitting diode lamp tube of claim 1, it is characterized in that this loop coil includes mutual correspondence and covers one first shell and one second shell that the back isolates this elementary winding and secondary windings.
4. according to the described light-emitting diode lamp tube of claim 1, it is characterized in that this circuit board includes the reflector layer of coating this projection surface.
5. according to the described light-emitting diode lamp tube of claim 1, it is characterized in that this circuit board includes a heat dissipation element that is arranged at this lumination of light emitting diode used heat that process produces that is provided with on this fitting surface leaving.
6. according to the described light-emitting diode lamp tube of claim 1, it is characterized in that this circuit board includes one and is arranged on this fitting surface and accepts electric power and make the driver module that the electric power modulation drives this light emitting diode from this electrical contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200985220U CN203190114U (en) | 2013-03-05 | 2013-03-05 | LED lamp tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200985220U CN203190114U (en) | 2013-03-05 | 2013-03-05 | LED lamp tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203190114U true CN203190114U (en) | 2013-09-11 |
Family
ID=49106972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200985220U Expired - Fee Related CN203190114U (en) | 2013-03-05 | 2013-03-05 | LED lamp tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203190114U (en) |
-
2013
- 2013-03-05 CN CN2013200985220U patent/CN203190114U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20150305 |
|
| EXPY | Termination of patent right or utility model |