CN203413506U - LED (light-emitting diode) heat dissipation mechanism of car lamp - Google Patents
LED (light-emitting diode) heat dissipation mechanism of car lamp Download PDFInfo
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- CN203413506U CN203413506U CN201320557316.1U CN201320557316U CN203413506U CN 203413506 U CN203413506 U CN 203413506U CN 201320557316 U CN201320557316 U CN 201320557316U CN 203413506 U CN203413506 U CN 203413506U
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- heat dissipation
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Abstract
The utility model relates to an LED (light-emitting diode) heat dissipation mechanism of a car lamp. The LED heat dissipation mechanism comprises an LED light source welded on a circuit board and a heat dissipation base, wherein the heat dissipation base is formed through injection molding of thermal conductive plastics and comprises at least two heat dissipation fins and a top plate on the top parts of the heat dissipation fins, continuous folding plates or/and spoke plates at intervals are arranged between each two adjacent heat dissipation fins, and the top plate is fixedly connected with the circuit board through heat-conducting glue. The LED heat dissipation mechanism provided by the utility model has the characteristics that the manufacture is convenient, the heat dissipation requirements are met, and the manufacturing costs of the car lamp are reduced.
Description
Technical field
The utility model relates to car light LED cooling mechanism, belongs to Vehicular lamp technical field.
Background technology
LED is as light source, has that volume is little, lightweight, light source utilization rate is high, and power consumption is low, long service life, the exciter response time is short, and travel safety is good, and is conducive to the advantages such as vehicle appearance design, along with the fast development of automobile, the application of LED on car light is also more and more extensive.But under current luminous efficiency, on car light, the power of LED is increasing, the heat dissipation problem of LED is just more and more outstanding, high-power LED light source can only be converted into luminous energy by part input power, and the Conversion of Energy of remainder is heat, if the heat producing effectively sheds not in time, junction temperature will raise, and causes that LED hydraulic performance decline even lost efficacy.The current heat radiation for great power LED is mainly by two kinds of forms.
The first structure is active heat removal: in car light, increase mini-fan, by what increase air-flow, flow is realized to heat radiation, can effectively reduce LED light source junction temperature.The heat abstractor of this structure has the significant advantage of radiating effect, but also exist, mainly depend on heat loss through convection because of its distribute heat of LED light source, after increasing fan, have on the one hand and can produce certain noise, the bearing of fan is difficult to reach the service life of LED light source service life on the other hand, therefore cause fan to damage, and affect the service life of car light.Secondly, in car light, set up fan, when long-life mini-fan is installed, can increase car light cost.
The second structure is passive heat radiation: by the radiator material of LED light source and the design of structure, to increase radiation and area of dissipation, have advantages of quiet, cost is low.But also exist radiating effect and depend on heat spreader structures design, need more ripe designing technique.Conventional radiator is made by aluminium alloy or pottery at present.Aluminium alloy thermal conductivity factor is high, but also exists corrosion-resistant, needs secondary operations and exists processing pollution problem.Especially its structure of radiator that aluminium alloy is made is limited to diel, so do not reach desirable radiating effect.And ceramic heat sink has advantages of that cost of material is cheap, but heat-conducting effect is general, and ceramic heat sink sintering process difficulty is large, and toughness cannot meet the demands.
Summary of the invention
The purpose of this utility model is to provide a kind of easy to make, can meet heat radiation requirement, falls the car light LED cooling mechanism that subtracts car light manufacturing cost.
The utility model is that the technical scheme achieving the above object is: a kind of car light LED cooling mechanism, comprise the LED light source and the radiating seat that are welded on circuit board, it is characterized in that: described radiating seat is comprised at least two radiating fins and is positioned at the top board at radiating fin top by heat-conducting plastic injection mo(u)lding, and between adjacent two radiating fins, be provided with continuous flap or/and be interval with disc, described top board is fixedly connected with circuit board by heat-conducting glue.
The utility model radiating seat comprises at least two radiating fins and is positioned at the top board at radiating fin top by heat-conducting plastic injection mo(u)lding, and top board is connected with circuit board by heat-conducting glue, easy to make, and technique is simple, can shorten production cycle increase production capacity.Radiating seat of the present utility model is adopted made of plastic, makes radiating seat have good heat conductivility and low-gravity, therefore, meeting under the precondition of heat radiation requirement, does not need to do insulation processing, can reduce production costs.The utility model has been set up continuous flap or/and be interval with disc between adjacent two radiating fins, can further increase cooling surface area by flap or disc, so can reach best radiating effect.The utility model is provided with base plate in radiating fin bottom, can further increase cooling surface area, can have maximum contact area with thermal conductor by base plate simultaneously, and heat is reached on thermal conductor, improves radiating efficiency.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is one of structural representation of the utility model car light use LED cooling mechanism.
Fig. 2 is the utility model car light with two of the structural representation of LED cooling mechanism.
Wherein: 1-LED light source, 2-circuit board, 3-radiating seat, 3-1-top board, 3-2-flap, 3-3-radiating fin, 3-4-base plate, 3-5-disc.
The specific embodiment
See shown in Fig. 1,2 that car light of the present utility model LED cooling mechanism comprises the LED light source 1 and the radiating seat 3 that are welded on circuit board 2.
See shown in Fig. 1,2, radiating seat 3 of the present utility model comprises at least two radiating fin 3-3 and is positioned at the top board 3-1 at radiating fin 3-3 top by heat-conducting plastic injection mo(u)lding, and heat-conducting plastic of the present utility model is PBT, PPA or PPS.As shown in Figure 1, the utility model is provided with continuous flap 3-2 between adjacent two radiating fin 3-3, and this flap is straight plate or bent plate; Or as shown in Figure 2, the utility model is interval with disc 3-5 between adjacent two radiating fin 3-3, disc 3-5 of the present utility model can be horizontally disposed with or be tilting, or between adjacent two radiating fin 3-3, be provided with continuous flap 3-2 and be interval with disc 3-5, by flap 3-2 or/and disc 3-5 improves the surface area of radiating seat 3, to improve radiating effect.
See shown in Fig. 1,2, the top board 3-1 of the utility model radiating seat 3 is fixedly connected with circuit board 2 by heat-conducting glue, the heat of LED light source 1 is passed to top board 3-1 upper, then by a plurality of radiating fin 3-3 and flap 3-2 or/and disc 3-5 with maximum specific area, dispel the heat.
See shown in Fig. 1,2.The utility model radiating seat 3 bottoms are provided with the base plate 3-2 that is connected with each radiating fin 3-3 bottom, can be arranged on thermal conductor by base plate 3-2, and heat is reached on thermal conductor, realize quick heat radiating.
Claims (2)
1. a car light LED cooling mechanism, comprise the LED light source (1) and the radiating seat (3) that are welded on circuit board (2), it is characterized in that: described radiating seat (3) is comprised at least two radiating fins (3-3) and is positioned at the top board (3-1) at radiating fin (3-3) top by heat-conducting plastic injection mo(u)lding, and between adjacent two radiating fins (3-3), be provided with continuous flap (3-2) or/and be interval with disc (3-5), described top board (3-1) is fixedly connected with circuit board (2) by heat-conducting glue.
2. car light according to claim 1 LED cooling mechanism, is characterized in that: described radiating seat (3) bottom is provided with the base plate (3-2) that is connected with each radiating fin (3-3) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320557316.1U CN203413506U (en) | 2013-09-09 | 2013-09-09 | LED (light-emitting diode) heat dissipation mechanism of car lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320557316.1U CN203413506U (en) | 2013-09-09 | 2013-09-09 | LED (light-emitting diode) heat dissipation mechanism of car lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413506U true CN203413506U (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320557316.1U Expired - Lifetime CN203413506U (en) | 2013-09-09 | 2013-09-09 | LED (light-emitting diode) heat dissipation mechanism of car lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413506U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848118A (en) * | 2014-11-05 | 2015-08-19 | 九龙坡区铜罐驿渝华机械加工厂 | Motorcycle LED lamp with illumination angle capable of being automatically adjusted in longitudinal direction |
-
2013
- 2013-09-09 CN CN201320557316.1U patent/CN203413506U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848118A (en) * | 2014-11-05 | 2015-08-19 | 九龙坡区铜罐驿渝华机械加工厂 | Motorcycle LED lamp with illumination angle capable of being automatically adjusted in longitudinal direction |
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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 |
Granted publication date: 20140129 |
|
| CX01 | Expiry of patent term |