CN104019415A - LED automobile lamp with good heat dissipation performance - Google Patents
LED automobile lamp with good heat dissipation performance Download PDFInfo
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- CN104019415A CN104019415A CN201410270121.8A CN201410270121A CN104019415A CN 104019415 A CN104019415 A CN 104019415A CN 201410270121 A CN201410270121 A CN 201410270121A CN 104019415 A CN104019415 A CN 104019415A
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Abstract
The invention discloses an LED automobile lamp with good heat dissipation performance. The LED automobile lamp comprises a lamp cover and an LED module arranged in the lamp cover. The LED module comprises an LED chip and a substrate, the LED chip is welded to one face of the substrate, a plurality of spiral heat-conducting fins are arranged on the other side of the substrate, and the spiral heat-conducting fins are located outside the lamp cover. The spiral heat-conducting fins are arranged toward the outside in a layered mode with the center of the substrate as the original point, the spiral heat-conducting fins located at the original point are central fins, the central fins extend downwards vertically, the spiral heat-conducting fins located on the outer layer of the central fins are oblique fins, the oblique fins totally extend outwards relative to the central fins, and communicating heat dissipation channels are formed between the spiral heat-conducting fins. Through the technical scheme, heat generated by the LED chip can be directly transmitted to the outside of the automobile lamp through the substrate and transmitted to convective air outside the automobile lamp through the oblique fins, and the LED automobile lamp with good heat dissipation performance is simple and compact in structure and high in heat exchange efficiency.
Description
Technical field
The present invention relates to lighting field, relate in particular to a kind of LED auto lamp of good heat dissipation.
Background technology
The advantage such as LED is little with its volume, the life-span is long, energy consumption is low, vibration resistance, start-up time are fast has become the first-selection of young mobile light source technology.LED is a kind of injection lelctroluminescence device, and under the effect of extra electric field, part energy is converted into luminous energy by the radiation recombination in electronics and hole, and the vibration of the lattice of radiationless compound generation is heat energy by remaining Conversion of Energy.
To in car headlamp, replace conventional light source for LED, must possess high-power, high efficiency and operating temperature the high reliability of-40 DEG C～125 DEG C.Realizing in these functional requirements, wherein a more formidable part is the problem of heat radiation, for single led, if concentrating in small-sized chip, heat can not effectively shed, can cause chip temperature to raise, cause the non-uniform Distribution of thermal stress, make chip failure.Therefore be that LED is in automobile key issue in the urgent need to address in headlamp application by the temperature rise of reasonable heat dissipation technology control LED light fixture.
LED car headlamp is due to spatial limitation, the vibration in driving process in addition, and very high to the requirement of stability, these have all increased the heat radiation difficulty of LED car light.In the heat sink conception car light of most, add in addition heat-conducting plate or heat pipe, increased car light production complexity.
Therefore, prior art need to improve.
Summary of the invention
The object of the invention is to propose a kind of LED auto lamp of good heat dissipation, the heat that LED chip can be produced is directly delivered to car light outside by substrate, is delivered in the air of the outside convection current of car light by oblique wing, and simple and compact for structure, heat exchange efficiency is high.
For reaching this object, the present invention by the following technical solutions:
A kind of LED auto lamp of good heat dissipation, comprise light cover, be located at the LED assembly in light cover, described LED assembly comprises LED chip and is used to the substrate of LED chip power supply, described LED chip is welded on the one side of substrate, the another side of substrate is provided with some spiral heat transmission fins, and spiral heat transmission fin is positioned at outside light cover; Described spiral heat transmission fin is taking the center of substrate as initial point is outwards arranged with stratiform, be positioned at fin centered by the spiral heat transmission fin at initial point place, center fin extends straight down, being positioned at center fin outer field is oblique wing, the outwardly-bent extension of described oblique wing relative center fin forms the heat dissipation channel being communicated with between described spiral heat transmission fin.
Wherein, described spiral heat transmission fin and substrate are welded and fixed.
Wherein, the axis of described oblique wing and the angular range of substrate are 45～90 °.
Wherein, the end of described spiral heat transmission fin is in the same plane.
Wherein, the end of described spiral heat transmission fin is connected with a heat sink.
Wherein, described light cover periphery extend horizontally away a junction, and described connecting portion is provided with some screws, and described substrate is provided with screw, the screw of substrate is corresponding with the screw of connecting portion, and screw is realized light cover through the screw of connecting portion and the screw of substrate and is connected with base plate screw.
Implement the embodiment of the present invention, there is following beneficial effect:
The embodiment of the present invention by processing spiral heat transmission fin on the another side of substrate, greatly increased heat exchange area, expand heat dissipation channel simultaneously, effectively improved the heat transfer rate on unit heat exchange area, therefore can better the heat of substrate be delivered to outside light cover by spiral heat transmission fin.Further, spiral heat transmission fin is layered arrangement, by heat transmission fin is made as to helical form, with respect to conventional fin, has further increased area of dissipation, and skin is made as oblique wing and further increased heat transfer extended surface, has effectively strengthened heat dispersion.The heat that LED chip produces is directly delivered to car light outside by substrate, is delivered to by oblique wing in the air of the outside convection current of car light, and simple and compact equipment structure, heat exchange efficiency is high, stable performance.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing described below is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the LED auto lamp of a kind of good heat dissipation of first embodiment of the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing of the present invention, technical scheme in the embodiment of the present invention is carried out to clear, complete description, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
In conjunction with Fig. 1, the first embodiment of the present invention is described.
The LED auto lamp of the present embodiment, comprises light cover 1, is located at the LED assembly in light cover 1, and described LED assembly specifically comprises some LED chips 2 and the substrate 3 that is used to each LED chip 2 to power.Described LED chip 2 is welded on the one side of substrate 3, and the another side of substrate 3 is provided with some spiral heat transmission fins 4, and spiral heat transmission fin 4 is positioned at outside light cover 1.Described spiral heat transmission fin 4 is outwards radial centered by substrate 3 central points, concrete, described spiral heat transmission fin 4 is taking the center of substrate 3 as initial point is outwards arranged with stratiform, be positioned at fin centered by the spiral heat transmission fin 4 at initial point place, center fin extends straight down, being positioned at center fin outer field is oblique wing, and the relative center of described oblique wing fin outwards radiates extension, forms the heat dissipation channel being communicated with between described spiral heat transmission fin 4.By heat transmission fin 4 is made as to helical form, with respect to conventional fin, further increase area of dissipation.
Preferably, in the present embodiment, spiral heat transmission fin 4 is welded and fixed with substrate 3, and heat transfer efficiency is high.
Preferably, the present embodiment Zhong center fin is perpendicular to substrate 3, outer field oblique wing tilts to extend along its root and substrate 3 center line connecting directions and towards the direction away from substrate 3 centers, and the angular range of the axis of described oblique wing and substrate 3 is 45～90, compare vertical fin, oblique wing is set and can have effectively expanded heat transfer area, improve heat dispersion.
Further, LED chip 2 directly welds with the side that substrate 3 is not established spiral heat transmission fin 4, the shape of substrate 3 matches with light cover 1 opening, the periphery of described light cover 1 opening extend horizontally away a junction, described connecting portion is provided with some screws, described substrate 3 is provided with screw, and the screw of substrate 3 is corresponding with the screw of connecting portion, and screw is realized light cover 1 through the screw of connecting portion with the screw of substrate 3 and is connected with substrate 3 screws.Therefore the heat that LED chip 2 produces is directly delivered to car light outside by substrate 3, is delivered to the heat exchange of car light outside air convection by spiral heat transmission fin 4, and dissipation of heat is gone out.
Further, the end of the heat transmission fin of spiral described in the present embodiment 4 is all in the same plane, therefore also can connect with heat sink at the end of described spiral heat transmission fin 4 as required, further to improve heat dispersion.
Pass through above-described embodiment, by processing spiral heat transmission fin 4 on the another side at substrate 3, greatly increased heat exchange area, expanded heat dissipation channel simultaneously, effectively improve the heat transfer rate on unit heat exchange area, therefore can better the heat of substrate 3 be delivered to outside light cover 1 by spiral heat transmission fin 4.Further, spiral heat transmission fin 4 is layered arrangement, and skin is made as oblique wing and further increased heat transfer extended surface, has effectively strengthened heat dispersion.The heat that LED chip produces is directly delivered to car light outside by substrate 3, is delivered to by oblique wing in the air of the outside convection current of car light, and simple and compact equipment structure, heat exchange efficiency is high, stable performance.
Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this claim scope of the present invention, therefore, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., still belong to the scope that the present invention is contained.
Claims (6)
1. the LED auto lamp of a good heat dissipation, comprise light cover (1), be located at the LED assembly in light cover (1), it is characterized in that, described LED assembly comprises LED chip (2) and is used to the substrate (3) of LED chip (2) power supply, described LED chip (2) is welded on the one side of substrate (3), the another side of substrate (3) is provided with some spiral heat transmission fins (4), and spiral heat transmission fin (4) is positioned at outside light cover (1); Described spiral heat transmission fin (4) is taking the center of substrate (3) as initial point is outwards arranged with stratiform, be positioned at fin centered by the spiral heat transmission fin (4) at initial point place, the axis of center fin straight down, being positioned at center fin outer field is oblique wing, the outward-dipping extension of the relative center of axis fin of described oblique wing forms the heat dissipation channel being communicated with between described spiral heat transmission fin (4).
2. LED auto lamp according to claim 1, is characterized in that, described spiral heat transmission fin (4) is welded and fixed with substrate (3).
3. LED auto lamp according to claim 1, is characterized in that, the angular range of the axis of described oblique wing and substrate (3) is 45～90 °.
4. LED auto lamp according to claim 1, is characterized in that, the end of described spiral heat transmission fin (4) is in the same plane.
5. LED auto lamp according to claim 4, is characterized in that, the end of described spiral heat transmission fin (4) is connected with a heat sink.
6. LED auto lamp according to claim 1, it is characterized in that, described light cover (1) periphery extend horizontally away a junction, described connecting portion is provided with some screws, described substrate (3) is provided with screw, the screw of substrate (3) is corresponding with the screw of connecting portion, and screw is realized light cover (1) through the screw of connecting portion with the screw of substrate (3) and is connected with substrate (3) screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270121.8A CN104019415A (en) | 2014-06-17 | 2014-06-17 | LED automobile lamp with good heat dissipation performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270121.8A CN104019415A (en) | 2014-06-17 | 2014-06-17 | LED automobile lamp with good heat dissipation performance |
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| Publication Number | Publication Date |
|---|---|
| CN104019415A true CN104019415A (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410270121.8A Pending CN104019415A (en) | 2014-06-17 | 2014-06-17 | LED automobile lamp with good heat dissipation performance |
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| Country | Link |
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| CN (1) | CN104019415A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214573A (en) * | 2014-09-15 | 2014-12-17 | 东莞市闻誉实业有限公司 | Straight tube LED (Light-Emitting Diode) lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832502A (en) * | 2010-05-24 | 2010-09-15 | 东南大学 | LED automobile lamp |
| CN201836838U (en) * | 2010-09-15 | 2011-05-18 | 深圳市大族元亨光电股份有限公司 | Lamp bar board sectional material of LED (Light-Emitting Diode) lamp and lamp bar board of LED lamp |
| CN203595106U (en) * | 2013-12-11 | 2014-05-14 | 重庆亮康光电科技有限公司 | Spiral-convection heat dissipation type LED lamp tube |
| CN203940332U (en) * | 2014-06-17 | 2014-11-12 | 昆山天重星光电科技有限公司 | A kind of LED auto lamp of good heat dissipation |
-
2014
- 2014-06-17 CN CN201410270121.8A patent/CN104019415A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101832502A (en) * | 2010-05-24 | 2010-09-15 | 东南大学 | LED automobile lamp |
| CN201836838U (en) * | 2010-09-15 | 2011-05-18 | 深圳市大族元亨光电股份有限公司 | Lamp bar board sectional material of LED (Light-Emitting Diode) lamp and lamp bar board of LED lamp |
| CN203595106U (en) * | 2013-12-11 | 2014-05-14 | 重庆亮康光电科技有限公司 | Spiral-convection heat dissipation type LED lamp tube |
| CN203940332U (en) * | 2014-06-17 | 2014-11-12 | 昆山天重星光电科技有限公司 | A kind of LED auto lamp of good heat dissipation |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214573A (en) * | 2014-09-15 | 2014-12-17 | 东莞市闻誉实业有限公司 | Straight tube LED (Light-Emitting Diode) lamp |
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Application publication date: 20140903 |