CN104100904A - Improved LED (Light Emitting Diode) automobile lamp - Google Patents
Improved LED (Light Emitting Diode) automobile lamp Download PDFInfo
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- CN104100904A CN104100904A CN201410270624.5A CN201410270624A CN104100904A CN 104100904 A CN104100904 A CN 104100904A CN 201410270624 A CN201410270624 A CN 201410270624A CN 104100904 A CN104100904 A CN 104100904A
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- substrate
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- heat transmission
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- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The invention discloses an improved LED (Light Emitting Diode) automobile lamp, which comprises a lamp cover and an LED assembly arranged in the lamp cover, wherein the LED assembly comprises an LED chip and a substrate, and the LED chip is welded on one surface of the substrate; a plurality of heat conducting fins are arranged on the other surface of the substrate and are positioned outside the lamp cover. The improved LED automobile lamp also comprises a light guide layer, wherein a light reflecting layer is arranged on the surface of the lower side of the light guide layer, and the heat conducting fin positioned at an original point is a central fin; the central fin vertical extends downwards, and the heat conducting fins positioned at the outer layer of the central fin are bending fins; the bent fins extend outwards in a bending way relative to the central fin, and communicated cooling channels are formed among the heat conducting fins. Through the technical scheme of the invention, heat generated by the LED chip can be directly transmitted to the outside of the automobile lamp through the substrate, and can be transmitted into convective air outside the automobile lamp, the structure is simple and compact, and the heat exchange efficiency is high.
Description
Technical field
The present invention relates to lighting field, relate in particular to a kind of improved LED auto lamp.
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, the radiation recombination in electronics and hole is converted into luminous energy by part energy, and the vibration of the lattice of radiationless compound generation is heat energy by remaining Conversion of Energy.
For LED, in car headlamp, replace conventional light source, must possess high-power, high efficiency and operating temperature the high reliability of-40 ℃～125 ℃.In realizing 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 the temperature rise by reasonable heat dissipation technology control LED light fixture is that LED is in automobile key issue in the urgent need to address in headlamp application.
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.
In addition, existing LED chip is arranged mainly with the form of rectangular array greatly, has limited rising angle, and light efficiency utilization rate is also not high enough.
Therefore, prior art need to improve.
Summary of the invention
The object of the invention is to propose a kind of improved LED auto lamp, the heat that LED chip can be produced is directly delivered to car light outside by substrate, and simple and compact for structure, heat exchange efficiency is high, and is conducive to improve light efficiency.
For reaching this object, the present invention by the following technical solutions:
A kind of improved LED auto lamp, comprise light cover, be located at the LED assembly in light cover, the substrate that described LED assembly comprises LED chip and is used to LED chip power supply, described LED chip is welded on the one side of substrate, the another side of substrate is provided with some heat transmission fins, and heat transmission fin is positioned at outside light cover; Also comprise optical waveguide layer, described optical waveguide layer is provided with the hole identical with LED chip quantity, and LED chip is arranged in described hole, and the downside surface of described optical waveguide layer is provided with reflector layer; Described heat transmission fin be take the center of substrate and outwards with stratiform, is arranged as initial point, be positioned at fin centered by the heat transmission fin at initial point place, center fin extends straight down, being positioned at center fin outer field is curved wing, the outwardly-bent extension of described curved wing relative center fin forms the heat dissipation channel being communicated with between described heat transmission fin.
Wherein, the whole cutting of described substrate and heat transmission fin forms; Described optical waveguide layer is fixedly connected with substrate.
Wherein, the tangent line of the axis of described curved wing and the angle of substrate reduce gradually with the increase of the distance of curved wing root position and substrate center, and the axis tangent line of curved wing and the angular range of substrate are 45～90 °.
Wherein, the end of described heat transmission fin is in the same plane.
Wherein, the end of described 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 heat transmission fin on the another side of substrate, greatly increased heat exchange area, expanded 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 heat transmission fin.Further, heat transmission fin is layered arrangement, and skin is made as curved 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, by curved wing, is delivered in the air of the outside convection current of car light, and simple and compact equipment structure, heat exchange efficiency is high, stable performance; By establishing optical waveguide layer, at the downside surface of optical waveguide layer, establish reflector layer, the light that LED chip sends is entered after optical waveguide layer, after the reflection of reflector layer, penetrate, improved light efficiency.
Accompanying drawing explanation
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, the accompanying drawing the following describes is only some embodiments of the present invention, for those of ordinary skills, 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 a kind of improved LED auto lamp of first embodiment of the invention.
The specific embodiment
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, rather than whole embodiment.Embodiment based in the present invention, the every other embodiment that those of ordinary skills 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, the substrate 3 that described LED assembly specifically comprises some LED chips 2 and is used to each LED chip 2 power supplies.Described LED chip 2 is welded on the one side of substrate 3, and the another side of substrate 3 is provided with some heat transmission fins 4, and heat transmission fin 4 is positioned at outside light cover 1.Described heat transmission fin 4 is outwards radial centered by substrate 3 central points, concrete, described heat transmission fin 4 be take the center of substrate 3 and outwards with stratiform, is arranged as initial point, be positioned at fin centered by the heat transmission fin 4 at initial point place, center fin extends straight down, being positioned at center fin outer field is curved wing, and the relative center of described curved wing fin outwards radiates extension, forms the heat dissipation channel being communicated with between described heat transmission fin 4.Further, the LED auto lamp of the present embodiment also comprises optical waveguide layer 5, and described optical waveguide layer 5 is fixedly connected with to prevent to be shifted in driving process with substrate 3.Described optical waveguide layer 5 is provided with the hole identical with LED chip 2 quantity, and LED chip 2 is arranged in described hole, and the downside surface of described optical waveguide layer 5 is provided with reflector layer, and described reflector layer can be the reflectorized material that is coated in optical waveguide layer 5 lower surfaces.By establishing optical waveguide layer, the downside surface of described optical waveguide layer is established reflector layer, and the light that LED chip sends is entered after optical waveguide layer, after the reflection of reflector layer, penetrates, and has improved light efficiency.
Preferably, in the present embodiment, substrate 3 forms with the whole cutting of heat transmission fin 4, does not therefore have thermal contact resistance, and heat transfer efficiency is high.
Preferably, the present embodiment Zhong center fin is perpendicular to substrate 3, outer field curved wing extends along its root and substrate 3 center line connecting directions and towards the direction away from substrate 3 centers is crooked, and the angle of the tangent line of the axis of described curved wing and substrate 3 reduces gradually with the increase of the distance at curved wing root position and substrate 3 centers, the axis tangent line of curved wing and the angular range of substrate 3 are 45～90, compare vertical fin, curved 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 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, by heat transmission fin 4, is delivered to the heat exchange of car light outside air convection, and dissipation of heat is gone out.
Therefore further, the end of heat transmission fin described in the present embodiment 4 is all in the same plane, also can be as required at the end of described heat transmission fin 4, connects with heat sink, further to improve heat dispersion.
Pass through above-described embodiment, by processing heat transmission fin 4 on the another side at substrate 3, very big increased heat exchange area, expanded heat dissipation channel simultaneously, effectively improved 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 heat transmission fin 4.Further, heat transmission fin 4 is layered arrangement, and skin is made as curved 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, by curved wing, is delivered in the air of the outside convection current of car light, and simple and compact equipment structure, heat exchange efficiency is high, stable performance; By establishing optical waveguide layer, at the downside surface of optical waveguide layer, establish reflector layer, the light that LED chip sends is entered after optical waveguide layer, after the reflection of reflector layer, penetrate, improved light efficiency.
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 modifications 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. an improved LED auto lamp, comprise light cover (1), be located at the LED assembly in light cover (1), it is characterized in that, the substrate (3) that described LED assembly comprises LED chip (2) and is used to 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 heat transmission fins (4), and heat transmission fin (4) is positioned at outside light cover (1); Also comprise optical waveguide layer (5), described optical waveguide layer (5) is provided with the hole identical with LED chip (2) quantity, and LED chip (2) is arranged in described hole, and the downside surface of described optical waveguide layer (5) is provided with reflector layer;
Described heat transmission fin (4) be take the center of substrate (3) and outwards with stratiform, is arranged as initial point, be positioned at fin centered by the heat transmission fin (4) at initial point place, center fin extends straight down, being positioned at center fin outer field is curved wing, the outwardly-bent extension of described curved wing relative center fin forms the heat dissipation channel being communicated with between described heat transmission fin (4).
2. LED auto lamp according to claim 1, is characterized in that, described substrate (3) forms with the whole cutting of heat transmission fin (4), and described optical waveguide layer (5) is fixedly connected with substrate (3).
3. LED auto lamp according to claim 1, it is characterized in that, the angle of the tangent line of the axis of described curved wing and substrate (3) reduces gradually with the increase of the distance at curved wing root position and substrate (3) center, and the angular range of the axis tangent line of curved wing and substrate (3) is 45～90 °.
4. LED auto lamp according to claim 1, is characterized in that, the end of described 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 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 |
|---|---|---|---|
| CN201410270624.5A CN104100904A (en) | 2014-06-17 | 2014-06-17 | Improved LED (Light Emitting Diode) automobile lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270624.5A CN104100904A (en) | 2014-06-17 | 2014-06-17 | Improved LED (Light Emitting Diode) automobile lamp |
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| Publication Number | Publication Date |
|---|---|
| CN104100904A true CN104100904A (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410270624.5A Pending CN104100904A (en) | 2014-06-17 | 2014-06-17 | Improved LED (Light Emitting Diode) automobile lamp |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500171A (en) * | 2016-12-14 | 2017-03-15 | 河南三元光电科技有限公司 | A kind of radiator for electric heater |
| CN107044599A (en) * | 2017-04-27 | 2017-08-15 | 东莞市闻誉实业有限公司 | Radiating 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 |
| KR20130106103A (en) * | 2012-03-19 | 2013-09-27 | 현대모비스 주식회사 | Lamp apparatus for an automobile |
| CN103791449A (en) * | 2012-10-30 | 2014-05-14 | 林咨佑 | Flat light guide module |
| CN203940334U (en) * | 2014-06-17 | 2014-11-12 | 昆山天重星光电科技有限公司 | A kind of improved LED auto lamp |
-
2014
- 2014-06-17 CN CN201410270624.5A patent/CN104100904A/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 |
| KR20130106103A (en) * | 2012-03-19 | 2013-09-27 | 현대모비스 주식회사 | Lamp apparatus for an automobile |
| CN103791449A (en) * | 2012-10-30 | 2014-05-14 | 林咨佑 | Flat light guide module |
| CN203940334U (en) * | 2014-06-17 | 2014-11-12 | 昆山天重星光电科技有限公司 | A kind of improved LED auto lamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106500171A (en) * | 2016-12-14 | 2017-03-15 | 河南三元光电科技有限公司 | A kind of radiator for electric heater |
| CN107044599A (en) * | 2017-04-27 | 2017-08-15 | 东莞市闻誉实业有限公司 | Radiating lamp |
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Application publication date: 20141015 |