CN205751746U - Inducer and apply the LED of this inducer - Google Patents
Inducer and apply the LED of this inducer Download PDFInfo
- Publication number
- CN205751746U CN205751746U CN201620605170.7U CN201620605170U CN205751746U CN 205751746 U CN205751746 U CN 205751746U CN 201620605170 U CN201620605170 U CN 201620605170U CN 205751746 U CN205751746 U CN 205751746U
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- China
- Prior art keywords
- inducer
- led
- coil
- magnetic
- magnetic cover
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Abstract
The utility model discloses a kind of inducer and apply the LED of this inducer, this inducer includes magnetic core and the coil being wrapped on magnetic core, described coil outer is cased with the magnetic cover that two ends are opening, being cased with metallic shield outside described magnetic cover, described metallic shield is outside equipped with a ground connection or connects the pin of power supply.This kind of inducer uses magnetic cover to combine with metallic shield, and the coil shape at inducer becomes double-layer shielding structure so that inducer is shielded to most of electromagnetic wave of emission, and inducer electromagnetic radiation to external world is significantly weakened；This inducer power inductance is utilized to be applied in LED power circuit, make LED power circuit have volume is little, electromagnetic radiation is low advantage, therefore can be assembled in less LED metallic lamp holder.
Description
Technical field
This utility model relates to LED power technique fields, more specifically, it relates to a kind of inducer and apply this electricity
The LED of sensor.
Background technology
The advantages such as LED is big with its lighting angle, energy-conservation, long-lived, environmental protection are praised highly by people.At present, LED is the most gradually
Replace traditional lighting and become the lighting of main flow.Along with the progress of technology, LED is just towards miniaturization, lightweight
Direction develop.As the matching component of LED, the lamp holder of LED also develops in the direction towards miniaturization.Existing LED, its
Lamp holder volume is relatively big, and the shell of lamp holder is made up of metal material, and its power circuit is integrated in its lamp holder, the zero line of integrated circuit
Being connected with shell, the live wire of integrated circuit is through shell and connects civil power, and lamp holder loads the fire of the power circuit made in lamp socket
Line connects the live wire of civil power, and the shell of lamp holder connects the zero line of civil power just can make LED luminous.The most integrated
Having the power inductance of IC chip and IC chip cooperating, during LED luminescence, power inductance can produce electromagnetic wave.
Owing to the shell of lamp holder is the middle conductor of zero line and the civil power zero line connecting power circuit, when LED works outside lamp holder
Shell can charged generation electromagnetic field, and the electromagnetic wave that power inductance produces through lamp holder its electromagnetic field of shell and outer cover of lamp holder this
The electromagnetic field of body is overlapped mutually so that lamp holder can be to the stronger electromagnetic wave of emission.And when the volume of lamp holder is the least, lamp holder
Shell diminishes with the space length of power inductance, and the electromagnetic wave that power inductance is launched is during propagating to the shell of lamp holder
Loss can diminish, and the electromagnetic field traveling to electromagnetic field and lamp shell at the shell of lamp holder self is overlapped mutually so that lamp holder
Strengthening to the electromagnetic wave of emission, the intensity of this electromagnetic wave be enough to the components and parts outside lamp holder and circuit are produced electromagnetic interference.
Therefore, for small-sized LED, the intensity reducing its lamp holder to the electromagnetic wave of emission is needed.
Utility model content
The deficiency existed for prior art, the purpose of this utility model is provide a kind of inducer and apply this inductance
The LED of device, this inducer has double-layer shielding structure, and this inducer is applied in the drive circuit of LED so that LED
Power circuit electromagnetic radiation to external world more weak.
For achieving the above object, this utility model provides following technical scheme:
A kind of inducer, including magnetic core and the coil being wrapped on magnetic core, is characterized in that: described coil outer is cased with two ends
For the magnetic cover of opening, being cased with metallic shield outside described magnetic cover, described metallic shield is outside equipped with a ground connection or connects power supply
Pin.
Preferably: described magnetic core is provided with passage, the inner chamber of magnetic cover is in communication with the outside by described passage.
Preferably: between described magnetic cover and coil, be provided with thermal shrinkable sleeve, described thermal shrinkable sleeve is coated on coil.
Preferably: described metallic shield is externally provided with insulating barrier.
Preferably: the dead in line of the passage at described magnetic core two ends.
Preferably: a diameter of 3-7mm of described inducer, height is 4-7mm.
A kind of LED, including in bulb, lamp holder and lamp socket, lamp holder being the power supply electricity being integrated with IC chip and power inductance
Road, described power inductance uses the inducer as described in aforementioned schemes any one.
Compared with prior art, the utility model has the advantages that: this kind of inducer uses magnetic cover to tie mutually with metallic shield
Closing, the coil shape at inducer becomes double-layer shielding structure so that inducer is shielded to most of electromagnetic wave of emission, electricity
Sensor electromagnetic radiation to external world is significantly weakened；This inducer is utilized to have volume as the LED lamp holder of power inductance little, electric
The advantage that magnetic radiation is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of inducer in embodiment one.
Description of reference numerals: 1, magnetic core；2, coil；3, thermal shrinkable sleeve；4, magnetic cover；5, metallic shield；6, space；7, logical
Pore；8, pin.
Detailed description of the invention
Embodiment one:
A kind of inducer, magnetic core 1 that this inducer is followed successively by " work " type from inside to outside, the coil 2 being wound on magnetic core 1, bag
Overlay on the magnetic cover 4 on coil 2 and the metallic shield 5 covering on outside magnetic cover 4.Space 6 is left between thermal shrinkable sleeve 3 and magnetic cover 4,
Offer some passages 7 in the lower end of magnetic core 1, space 6 is connected by passage 7 with extraneous air.The two ends up and down of magnetic cover 4 are equal
For opening.
During inducer works, electric current flowing through coil 2, coil 2 produces electromagnetic wave.Meet when electromagnetic wave outside is propagated
To magnetic cover 4, magnetic cover 4 is by part electromagnetic wave shielding, and remaining electromagnetic wave continues outwards to propagate by magnetic cover 4 and runs into metal screen immediately
Covering cover 5, metallic shield 5 will be fallen by most of electromagnetic wave shielding of magnetic cover 4 so that only minimal amount of electromagnetic wave can be to
Extraneous propagation.So can significantly weaken inducer electronic devices and components to external world and the electromagnetic radiation of circuit.In order to make metallic shield
The shield effectiveness of cover 5 is more preferable, is provided with in the outside of metallic shield 5 for ground connection or the pin 8 that connects power supply, this is because electric
The metallic shield 5 of magnetic shield adds electrostatic coupling, so in order to avoid this harmful effect, metallic shield 5 ground connection
Or connect power supply；Also there is the function preventing electric leakage simultaneously.
The general inducer with magnetic cover 4, the upper end of its magnetic cover 4 is typically to close, upper at magnetic cover 4 and magnetic core 1
Having air gap between end, during the work of this inducer, the magnetic field of coil 2 is affected by air gap, upper and lower due to magnetic cover 4
Two ends are opening, and magnetic cover 4 would not form air gap with the two ends up and down of magnetic core 1, and air gap produces impact to the density of magnetic induction line,
Air gap is the biggest, and the density of magnetic induction line is the least, and air gap is the least, and the density of magnetic induction line is the biggest.Magnetic induction line density is the biggest, the magnetic at air gap
Field intensity is the strongest, and when the high intensity magnetic field that air gap goes out, electromagnetic wave will pass magnetic cover 4 so that magnetic cover 4 can not rise well
To shielding action.This inducer, is in the purpose reducing volume, needs to reduce the air gap between magnetic cover 4 and magnetic core 1 as far as possible,
But for improving the purpose of shield effectiveness, needing to increase the distance between magnetic cover 4 and magnetic core 1, the most this inducer needs as far as possible
Spend a lot of time with energy go debug air gap size.And magnetic cover 4 is designed as the structure of upper and lower side opening by this inducer, make
Obtain and there is no air gap between magnetic cover 4 and the upper end of magnetic core 1, although such change makes the shield effectiveness of magnetic cover 4 have certain reduction,
But the governing loop to air gap in inducer manufacturing process can be saved, be beneficial to improve working (machining) efficiency.And the shielding that magnetic cover 4 is sacrificed
Can be able to be made up by metallic shield 5.Magnetic cover 4 makes inducer still have stronger electromagnetism with coordinating of metallic shield 5
Screening ability.
Electromagnetic Field is on metallic shield 5, and metallic shield 5 has faradism, for preventing electric leakage, metal sealing cover
5 outsides scribble insullac as insulating barrier.
Thermal shrinkable sleeve 3 is enclosed within coil 2 outside and plays buffer action, and thermal shrinkable sleeve 3 prevents coil 2 from contacting with magnetic cover 4, it is to avoid occur
Electric leakage.During inducer works, coil 2 can produce substantial amounts of heat so that the temperature of inducer raises, for ensureing electricity
Sensor is just producing work, needs the volume heat produced by coil 2 to discharge in time.Owing to thermal shrinkable sleeve 3 is coated on coil 2 outside, coil 2
On heat conduction on thermal shrinkable sleeve 3, then distributed to space 6 by thermal shrinkable sleeve 3, passage 7 is by space 6 with outside air even
Logical so that the heat in space 6 can be discharged to outside inducer, beneficially inducer heat radiation.For making inducer heat radiation uniformly, passage
7 are symmetrically dispersed on magnetic core 1 along the axis direction of magnetic core 1, are designed so that in inducer that the heat at each position can
Uniformly distribute.
In the present embodiment, the size of inducer is: diameter 3-7mm, highly 4-7mm.This inducer volume is little, is applied
Circuit can be made very small in LED power circuit, thus power circuit can be contained in the compact LED lamp holder of metal material
In (E14, E12 are the least).
Embodiment two:
A kind of LED, its have lamp holder, bulb and with lamp holder with the use of lamp socket.Lamp holder inside is the electricity of LED
Source circuit, the shell of lamp holder is metal shell, and lamp holder inside is the power circuit of LED.Power circuit be integrated with IC chip and
Power inductance.This power inductance is the inducer in embodiment one.External metallization radome 5 ground connection of power inductance.Power electricity
Magnetic cover 4 in sense and metallic shield 5 with the use of so that most electromagnetic waves that power inductance produces are shielded, only
There is few part electromagnetic wave can launch from power inductance.And the electromagnetic wave launched can damage in propagating way
Consumption, the electromagnetic wave propagating to lamp shell is actually little, by power inductance propagate to the electromagnetic field of lamp shell with
The electromagnetic field formed after the electromagnetic field superposition of lamp shell self is the most weak in fact.So, lamp holder electromagnetic radiation to external world
Significantly weakened, the most just achieved the lamp shell at small size, if model is metallic lamp holder the least for E14 or E12
In, effectively reduce the effect of electromagnetic interference.
The above is only preferred implementation of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under this utility model thinking belong to protection domain of the present utility model.Should refer to
Go out, for those skilled in the art, without departing from the some improvement under this utility model principle premise and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (8)
1. an inducer, including magnetic core (1) and the coil (2) that is wrapped on magnetic core (1), is characterized in that: described coil (2) is outward
Portion is cased with magnetic cover (4) that two ends are opening, and described magnetic cover (4) is outside is cased with metallic shield (5), described metallic shield (5)
It is outside equipped with a ground connection or connects the pin (8) of power supply.
Inducer the most according to claim 1, is characterized in that: be provided with thermal shrinkable sleeve between described magnetic cover (4) and coil (2)
(3), described thermal shrinkable sleeve (3) is coated on coil (2).
Inducer the most according to claim 2, is characterized in that: described metallic shield (5) is externally provided with insulating barrier.
Inducer the most according to claim 3, is characterized in that: described magnetic core (1) is provided with some passages (7), described
The inner chamber of magnetic cover (4) is in communication with the outside by passage (7).
Inducer the most according to claim 4, is characterized in that: leave gap between described thermal shrinkable sleeve (3) and magnetic cover (4)
(6), described gap (6) connect with passage (7).
Inducer the most according to claim 5, is characterized in that: described passage (7) divides along the axisymmetrical of magnetic core (1)
Cloth.
Inducer the most according to claim 6, is characterized in that: a diameter of 3-7mm of described inducer, and height is 4-7mm.
8. a LED, including bulb, lamp holder and lamp socket, the interior power circuit being to be integrated with IC chip and power inductance of lamp holder,
It is characterized in that: described power inductance uses the inducer as described in claim 1-7 any one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620605170.7U CN205751746U (en) | 2016-06-17 | 2016-06-17 | Inducer and apply the LED of this inducer |
| DE202016104063.9U DE202016104063U1 (en) | 2016-06-17 | 2016-07-26 | Inductor, LED driver and LED light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620605170.7U CN205751746U (en) | 2016-06-17 | 2016-06-17 | Inducer and apply the LED of this inducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205751746U true CN205751746U (en) | 2016-11-30 |
Family
ID=57386974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620605170.7U Expired - Fee Related CN205751746U (en) | 2016-06-17 | 2016-06-17 | Inducer and apply the LED of this inducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205751746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414110A (en) * | 2018-02-09 | 2018-08-17 | 陈景超 | Induction temperature sensing device and temp measuring method, cooker and calutron |
-
2016
- 2016-06-17 CN CN201620605170.7U patent/CN205751746U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108414110A (en) * | 2018-02-09 | 2018-08-17 | 陈景超 | Induction temperature sensing device and temp measuring method, cooker and calutron |
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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: 20161130 Termination date: 20170617 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |