CN203258539U

CN203258539U - Exposed heat dissipation type light emitting diode (LED) car lamp

Info

Publication number: CN203258539U
Application number: CN2013201961789U
Authority: CN
Inventors: 吴海龙
Original assignee: CHONGQING SANGNAIMEI PHOTOELECTRIC TECHNOLOGY Co Ltd
Current assignee: CHONGQING SANGNAIMEI PHOTOELECTRIC TECHNOLOGY Co Ltd
Priority date: 2013-04-18
Filing date: 2013-04-18
Publication date: 2013-10-30
Anticipated expiration: 2023-04-18

Abstract

The utility model relates to an exposed heat dissipation type light emitting diode (LED) car lamp, which belongs to the field of lighting technology, and comprises a heat dissipation plate. The exposed heat dissipation type LED car lamp is characterized in that the heat dissipation plate is provided with a distance light LED light source and a passing light LED light source, and a plurality of heat dissipation fins are distributed on the heat dissipation plate which is arranged on the periphery of the distance light LED light source and the passing light LED light source. The exposed heat dissipation type LED car lamp is simpler in structure and extremely obvious in heat dissipation effect. Because removing a transparent lampshade of a traditional car lamp, the heat dissipation fins of an LED lamp are exposed in natural air outside a car body, thereby guaranteeing excellent heat dissipation of an LED, enabling heat dissipation of the LED to be better particularly during the drive process of cars because the heat dissipation fins are forcibly cooled by relative air flow, and more guaranteeing high photosynthetic efficiency and long life of an LED car lamp. The exposed heat dissipation type LED car lamp is simpler in structure, lower in cost, higher in reliability, easier to mount and maintain, and enlarges range of visibility of high beam and low beam lights of cars simultaneously.

Description

Expose the cooling type LED car light

Technical field

The utility model relates to a kind of cooling type LED car light that exposes, and belongs to lighting technical field.

Background technology

The current mobility car light mainly uses two kinds of light sources: Halogen lamp LED and xenon lamp.It is luminous that Halogen lamp LED uses the tungsten filament heating to turn white-hot, and xenon lamp adopts arc glow without filament, the temperature when both work all up to hundreds of degree centigrade to thousands of degrees centigrade, and To Be Protected from Heat.Therefore car light generally is designed to a relatively box of sealing present stage, and its rear portion is reflection shield, and front portion is transparent lampshade, and light source is installed on the cavity of centre.Such design can keep the cleaning of inner counter light shield and lamp pearl, avoids simultaneously lamp pearl loses heat to reduce light efficiency.When using Halogen lamp LED or xenon lamp as light source, its major defect is that light efficiency is not high, the life-span is not long, not only makes complete-vehicle oil consumption high, not environmental protection, and car light damages and also can cause security risk when driving at night.

Development along with science and technology, after the LED that light efficiency is high, the life-span is long enters lighting field, various enterprises and research institution also are applied to automotive lamp in plan with great power LED, but because LED is the semi-conductor electricity sub-element, its principle of luminosity is very not identical with conventional light source with self-characteristic.Temperature during such as the work of Halogen lamp LED, xenon lamp is all very high and To Be Protected from Heat, and the temperature in LED when work is relatively low and To Be Protected from Heat, and its chip temperature generally is no more than 100 degree, and every rising 10 degree of operating temperature, its life-span shortens half approximately, and light efficiency reduces about 3%.So when LED was used for automotive lamp, its heat radiation was most important.

At present some methods that solve LED heat radiation mainly are: inner at car body, the back of LED installs heat abstractor additional, such as installing heat-pipe radiating apparatus additional and aluminium radiator adds fan etc.Adopt aforesaid way to have following defective: install air-cooled finned radiator additional such as section within it, its radiating effect is relatively poor, because the space at car light rear portion do not circulate than occluded air, and near the very high engine of temperature; As using heat-pipe radiator or water-filled radiator, its complex structure cost is high.

The utility model content

According to above deficiency of the prior art, the technical problems to be solved in the utility model is: a kind of cooling type LED car light that exposes is provided, and it is simple in structure, good heat dissipation effect, and cost is low.

The cooling type LED car light that exposes described in the utility model comprises heat sink, it is characterized in that: distance light led light source and dipped beam led light source are installed on the heat sink.

Further be distributed with several radiating fins on the heat sink around preferred described distance light led light source and the dipped beam led light source.

By said structure, removed the Transparent lamp shade in current mobility car light front, what replace the lampshade outline is the radiating fin of giving prominence to.Owing to there has not been the sealing process of Transparent lamp shade, radiating fin can contact with the moving air outside the vehicle body, has guaranteed that thus radiator can normally dispel the heat; Because led light source size I to be installed on less space, so the more multizone of whole car light is radiating fin, satisfies the heat radiation requirement of great power LED with this.

In order further to improve the utilization rate of distance light led light source and dipped beam led light source, be coated with reflective membrane at described distance light led light source and the contiguous radiating fin surface of dipped beam led light source.

During use, under the effect of reflective membrane, play the effect of reflection shield, the distance light led light source is installed in the darker reflection cavity, and it is less that its rising angle becomes behind Multi reflection, and light is outranged.The dipped beam led light source is installed in the more shallow reflection cavity, and its rising angle is large, can shine nearer zone.

The utility model radiating fin is several schemes below the distribution on the heat sink is mainly preferred:

One, described radiating fin is laterally evenly to distribute at heat sink.

Two, described radiating fin is vertically evenly to distribute at heat sink.

Three, described radiating fin evenly distributes for staggered at heat sink.

Four, described radiating fin is ring-like distribution at heat sink.

Compared with prior art, the utlity model has following beneficial effect:

1, passes through the utility model, utilizing high power LED is as the light source of headlight for vehicles, not only light efficiency is high, can reduce car load operating cost, accomplish energy-saving and emission-reduction, and because the life-span of its overlength, can make that car load is in service exempts to change light source throughout one's life, when having avoided simultaneously the use other light sources, driving at night is turned off the light and is caused potential safety hazard or driving puzzlement.

2, next the design has removed the Transparent lamp shade of traditional car light, the radiating fin of LED lamp is exposed in the outer natural air of vehicle body, thereby guaranteed the good heat radiating of LED, particularly fin can be subject to the pressure cooling effect of relative wind in the Vehicle Driving Cycle process, make the heat radiation of LED better, thereby high light efficiency and the long-life of LED car light have more been guaranteed, its structure is simpler, cost is lower, reliability is higher, installation and maintenance are easier, has enlarged simultaneously the visual line of sight of dazzle light and dipped headlights.

Description of drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the right TV structure schematic diagram of Fig. 1;

Fig. 3 is that Fig. 1 looks up structural representation;

Among the figure: 1, heat sink 2, distance light led light source 3, dipped beam led light source 4, radiating fin 5, reflective membrane.

The specific embodiment

Below the utility model is described in further detail by specific embodiment; but not in order to limit the utility model; all within the utility model spirit and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

As shown in Figure 1, expose the cooling type LED car light, comprise heat sink 1, distance light led light source 2 and dipped beam led light source 3 are installed on the heat sink 1, heat sink 1 around distance light led light source 2 and dipped beam led light source 3 is distributed with several radiating fins 4, and distance light led light source 2 and dipped beam led light source 3 contiguous radiating fin 4 surfaces are coated with reflective membrane 5.

Radiating fin described in the present embodiment 4 is laterally evenly to distribute at heat sink 1; Heat sink 1 uses the high aluminium alloy of thermal conductivity or heat-conducting plastic to make.Described radiating fin 4 can also be for vertically evenly distributing or other distribution modes on heat sink 1 when practical application, and concrete distribution can be determined according to epoch aesthetic conceptions and technical conditions.

During use, the utility model is installed in car body by heat sink 1 the lamp place is installed, owing to removed the Transparent lamp shade in current mobility car light front, what replace the lampshade outline is the radiating fin 4 of giving prominence to, thereby the sealing process that has not had Transparent lamp shade, radiating fin 4 can contact with the moving air outside the vehicle body, has guaranteed thus normal radiating effect.

By present embodiment, according to the light efficiency 100Lm/W calculating of present main flow LED, the illuminating effect of 30 watts of LED of use has been better than the effect of 60 watts of Halogen lamp LEDs, near the effect of 35 watts of xenon lamps.The required area of dissipation of 30WLED needs 30 square centimeters of calculating altogether to need 900 square centimeters by every watt of LED of natural air cooled situation.

By present embodiment, also be not difficult to analyze, when the power of distance light led light source 2 and dipped beam led light source 3 hour, also can adopt reflector to substitute heat sink 1 and radiating fin 4, thereby reach the purpose that distance light led light source 2 and dipped beam led light source 3 dispel the heat; If distance light led light source 2 power are larger, and dipped beam led light source 3 power hour, can also adopt distance light led light source 2 is installed on the heat sink 1, utilizes the technical approach of radiating fin 4 heat radiations, and dipped beam led light source 3 adopts reflectors to install.

When practical application, radiating mode of the present utility model can also be applied on other heater element, also can be used on other products, such as Motorcycle headlight etc.

Claims

1. one kind exposes the cooling type LED car light, comprises heat sink (1), it is characterized in that: distance light led light source (2) and dipped beam led light source (3) are installed on the heat sink (1).

2. the cooling type LED car light that exposes according to claim 1 is characterized in that: be distributed with several radiating fins (4) on described distance light led light source (2) and dipped beam led light source (3) heat sink (1) all around.

3. the cooling type LED car light that exposes according to claim 2 is characterized in that: contiguous radiating fin (4) surface of described distance light led light source (2) and dipped beam led light source (3) is coated with reflective membrane (5).

4. the cooling type LED car light that exposes according to claim 3 is characterized in that: described radiating fin (4) at heat sink (1) for laterally evenly distributing.

5. the cooling type LED car light that exposes according to claim 3 is characterized in that: described radiating fin (4) at heat sink (1) for vertically evenly distributing.

6. the cooling type LED car light that exposes according to claim 3 is characterized in that: described radiating fin (4) evenly distributes for staggered at heat sink (1).

7. the cooling type LED car light that exposes according to claim 3 is characterized in that: described radiating fin (4) (1) on heat sink is ring-like distribution.