CN201629943U - LED drive shielding box of automobile - Google Patents
LED drive shielding box of automobile Download PDFInfo
- Publication number
- CN201629943U CN201629943U CN2010201167324U CN201020116732U CN201629943U CN 201629943 U CN201629943 U CN 201629943U CN 2010201167324 U CN2010201167324 U CN 2010201167324U CN 201020116732 U CN201020116732 U CN 201020116732U CN 201629943 U CN201629943 U CN 201629943U
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- box
- box body
- shielding
- automobile
- lid
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Abstract
The utility model relates to an LED drive shielding box of an automobile. The shielding box comprises a box body and a box cover arranged on the box body. The box body is an aluminum alloy box body, and periphery radiating fins are uniformly arranged on the side walls of the box body. The box cover is an aluminum alloy box cover, upper radiating fins are uniformly arranged on the top of the box cover, and the upper radiating fins are higher than the periphery radiating fins. The shielding box achieves the shielding purpose by utilizing electromagnetic induction phenomena to produce an eddy counter magnet field on the surface of a shielded body, and effectively reduces high frequency electromagnet interference. The utility model has the characteristics of excellent electromagnetic shielding functions, light weight and excellent radiating properties.
Description
Technical field
The utility model relates to a kind of led driver shielding box that is used for automobile, belongs to the automotive lighting technical field.
Background technology
Increasingly mature along with the LED product, it is efficient, and stable, energy-conservation characteristics are more and more praised highly by people, and various lighting devices also adopt LED as its primary light source one after another.Automotive lighting has also more and more used LED, the accurate operation of stablizing of the great power LED that 1W is above then needs to use drive circuit, led drive circuit is made of the high frequency original papers such as inductance, electric capacity and MOSFET pipe of high frequency, and elements such as inductance, electric capacity can send a series of noise when work, and produce certain electromagnetic interference, this electromagnetic interference can influence the operate as normal of other electronic components in the car again, brings certain potential safety hazard to driving.In addition because the environment for use more complicated of automobile, and the LED car light is tighter for temperature requirement, so the operational environment of higher temperature can cause LED car light and driver thereof to damage in early days.
Summary of the invention
The utility model provides a kind of good electro-magnetic screen function that has, the light and handy and good led driver shielding box that is used for automobile that dispels the heat.
The utility model for the employed technical scheme that achieves the above object is: a kind of led driver shielding box that is used for automobile, comprise box body and the lid that is installed on the box body, it is characterized in that: described box body is the aluminium alloy box body, and the perisporium of box body is evenly equipped with peripheral radiating fin, lid also is the aluminium alloy lid, the top of lid is evenly equipped with radiating fin, and goes up the height of the height of radiating fin greater than peripheral radiating fin.
Box body of the present utility model and lid are made by aluminium alloy, make full use of the good conductor material characteristics that aluminium alloy has low-resistivity, because during the drive circuit works in the shielding box is under the high frequency magnetic field state, the induced electromotive force that this magnetic field produced causes induced current again, the magnetic flux that induced current produced always stops the variation of the magnetic flux in former magnetic field, be the flow direction of induced current generation and changing in the opposite direction of former magnetic flux, so when high frequency magnetic field passes the shielding box that the aluminium alloy good conductor makes, can on the box wall of shielding box and lid, produce eddy current, offset former magnetic field by the opposing magnetic field that this eddy current produced, be the magnetic field that counter magnetic field that inductive loop produces has strengthened shielding box box wall and lid again, make the magnetic line of force in shielding box, detour by, the magnetic field that inductance coil produced is limited in the shielding box, the while external magnetic field also eddy current counter magnetic field of conductively-closed box repels, reached the purpose of high frequency magnetic field shielding, and reduce electromagnetic radiation, shielding box of the present utility model can not only reduce the influence of electromagnetic interference for other circuit, and can reduce the interference of external magnetic field again to the drive circuit in the shielding box, increase traveling security.Box body of the present utility model is provided with peripheral radiating fin, box body is provided with radiating fin, the peripheral surface that has increased shielding box is long-pending, accelerated the transmission of heat, effective diffusion-driven device internal heat, solve the heat that the hot-air come-up brought and gathered problem, can effectively reduce the internal drive temperature, make the drive circuit steady operation.Shielding box of the present utility model adopts aluminium alloy to make, and weight is light and handy, easily installs.
Description of drawings
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Wherein: 1-lid, the last radiating fin of 11-, 2-circuit board, 3-box body, 31-periphery radiating fin.
Embodiment
See shown in Figure 1, the led driver shielding box that is used for automobile of the present utility model, comprise box body 3 and the lid 1 that is installed on the box body 3, lid 1 is installed on the box body 3 by securing member, and circuit board 2 is installed in the box body, drive circuit is installed on the circuit board 2, this box body 3 is the aluminium alloy box body, and the perisporium of box body 3 is evenly equipped with peripheral radiating fin 31, same lid 1 also is the aluminium alloy lid, the top of lid 1 is evenly equipped with radiating fin 11, and height of radiating fin 11 is greater than the height of peripheral radiating fin 31 on this.Because lid 1 adopts the aluminum alloy materials with large-scale radiating fin to make, under the prerequisite that guarantees good heat radiating, quickened the diffusion of come-up heat, heat is not piled up, and box body 3 adopts the aluminum alloy materials with small heat-dissipating fin to make, guaranteed the heat diffusion in space in the box, prolonged the life-span of electronic component, increased the job stability of driver, and create an airtight shielding space, utilize the counter magnetic field of the eddy current that electromagnetic induction phenomenon produced on the shield surface to reach the shielding purpose, effectively reduce high-frequency electromagnetic and disturb.
Claims (1)
1. led driver shielding box that is used for automobile, comprise box body and the lid that is installed on the box body, it is characterized in that: described box body is the aluminium alloy box body, and the perisporium of box body is evenly equipped with peripheral radiating fin, lid also is the aluminium alloy lid, the top of lid is evenly equipped with radiating fin, and goes up the height of the height of radiating fin greater than peripheral radiating fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201167324U CN201629943U (en) | 2010-02-20 | 2010-02-20 | LED drive shielding box of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201167324U CN201629943U (en) | 2010-02-20 | 2010-02-20 | LED drive shielding box of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629943U true CN201629943U (en) | 2010-11-10 |
Family
ID=43061341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201167324U Expired - Lifetime CN201629943U (en) | 2010-02-20 | 2010-02-20 | LED drive shielding box of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629943U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696843A (en) * | 2013-10-18 | 2015-06-10 | 黑拉许克联合股份有限公司 | Lighting Unit for a Motor Vehicle |
| CN106413325A (en) * | 2016-10-31 | 2017-02-15 | 成都佳美嘉科技有限公司 | Communication box |
| CN114141584A (en) * | 2021-11-03 | 2022-03-04 | 西安交通大学 | Magnetic field shielding method of high-capacity circuit breaker |
-
2010
- 2010-02-20 CN CN2010201167324U patent/CN201629943U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696843A (en) * | 2013-10-18 | 2015-06-10 | 黑拉许克联合股份有限公司 | Lighting Unit for a Motor Vehicle |
| CN104696843B (en) * | 2013-10-18 | 2019-01-08 | 黑拉许克联合股份有限公司 | Lighting unit for motor vehicle |
| CN106413325A (en) * | 2016-10-31 | 2017-02-15 | 成都佳美嘉科技有限公司 | Communication box |
| CN114141584A (en) * | 2021-11-03 | 2022-03-04 | 西安交通大学 | Magnetic field shielding method of high-capacity circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101110 |