CN102128405A - LED car high beam lamps - Google Patents

Abstract

The invention discloses an LED automobile high beam lamp, which comprises a reflecting cup and is characterized in that: the light reflecting cup comprises a first parabolic surface, a second parabolic surface, a third parabolic surface and a fourth parabolic surface which are connected in sequence; the first parabolic surface is also connected with the fourth parabolic surface; the first parabolic surface and the third parabolic surface are completely symmetrical, the second parabolic surface and the fourth parabolic surface are constrained by the same parabolic surface equation, and the area of the fourth parabolic surface is larger than that of the second parabolic surface; the focuses of all the parabolic surfaces are overlapped, an LED light-emitting source group is arranged at the focus, and the LED light-emitting source group is fixed on the LED mounting base. By adopting the automobile high beam lamp, emergent light can be parallel light, and emergent light spots are rectangular light spots, so that the dazzling problem of the lamp and the radiation to human eyes are reduced to the maximum extent.

Description

LED car high beam lamps

technical field

The invention is a lamp invention, in particular to an LED automotive headlight high beam lamp.

Background technique

With the improvement of living standards, automobiles have begun to become a popular consumer product and have entered millions of households, bringing huge business opportunities and attractive prospects to the automobile industry. As an important link in the automobile manufacturing industry chain, automobile accessories, especially the headlight system that is related to the safe operation of automobiles, will also bring a lot of market opportunities to related enterprises. The current automotive lamp market is mainly occupied by halogen lamps and xenon lamps. With its good development trend and its many advantages in recent years, LED has already had preliminary application and development in the automotive headlight market. At present, many brands in the automotive and other markets have launched their own LED lights and achieved good results.

Contents of the invention

The purpose of the present invention is to give full play to the excellent characteristics of LEDs on automobile headlights, overcome the key thermal problems of LEDs and at the same time solve the dazzling light emission of traditional automobile lamps, and provide automobile high beams with LED indirect emission.

The technical scheme adopted in the present invention is:

An LED automotive high-beam lamp, comprising a reflector, the reflector comprises a first parabolic surface, a second parabolic surface, a third parabolic surface and a fourth parabolic surface connected in sequence; the first parabolic surface is also connected to the fourth parabolic surface Then; the first parabolic surface is completely symmetrical to the third parabolic surface, the second parabolic surface and the fourth parabolic surface are constrained by the same parabolic surface equation, and the area of the fourth parabolic surface is greater than the area of the second parabolic surface; the focus of all parabolic surfaces Overlap, set the LED light emitting source group at the focal point, and the LED light emitting source group is fixed on the LED installation base.

Further, the LED light source group is composed of four high-power LEDs.

Further, a claw-shaped heat dissipation shell is provided outside the LED installation base.

Further, the LED mounting base is provided with an aluminum substrate, and the LED light source group is welded on the aluminum substrate.

By adopting the automobile high-beam lamp of the present invention, it can ensure that the outgoing light is parallel light and the outgoing light spot is a rectangular light spot, thereby reducing the glare problem of the lamp and the radiation to human eyes to the greatest extent. The area of the fourth parabolic surface of the reflector is larger than the area of the second parabolic surface, so that there is more light reflection on the side of the larger area, the shape of the light spot of the lamp is the best, and the lighting effect is the best. Two parabolas at the same time The curved surface formed by the front end of the surface conforms to the curve shape of the automobile headlight module, and has the advantage of being more convenient for matching existing car lights.

Through the good contact between the LED mounting base and the claw-shaped heat-dissipating shell and the sufficient heat-dissipating area of the claw-shaped heat-dissipating shell, the present invention makes the heat generated by the LED quickly conduct out and dissipate into the air through the heat-dissipating shell, which solves the current problem of LED Big problem in automotive headlamp applications.

The combination of 4 LEDs and double parabola-constrained reflectors ensures that the light is concentrated, and the parallel light is emitted to produce a rectangular spot, which can better solve the effect of dazzling light. After the light is reflected by the reflector, the emitted light is parallel light, and the shape is Rectangular spot. Add a heat dissipation shell with sufficient heat dissipation area on the outside of the reflector and the LED mounting base to ensure sufficient heat dissipation for high-power LEDs. Through the full contact of the aluminum substrate welded to the bottom of the reflector by the LED and better thermal conductivity, good heat conduction The sufficient heat dissipation area of the heat dissipation scales fully guarantees the advantages of long service life and high light efficiency of the LED.

The vehicle-mounted power supply is a regulated 12-15V output. The present invention uses a constant voltage-constant current conversion power supply to provide a constant current power output for the LED to ensure the normal operation of the LED, give full play to the advantages of the LED, and achieve the advantageous effect of using the LED car light. At the same time, in the selection of LEDs, the present invention selects LEDs with better heat dissipation according to the actual situation that the temperature of the automobile headlights is higher due to the relationship between the position and the principle of automobile starting. temperature requirements.

Compared with the prior art, the present invention has the following advantages: using the light emitting characteristics of the parabolic reflector cup, the lamp emits parallel light with a rectangular spot; the claw-shaped heat dissipation structure is adopted to ensure that the heat is dissipated as quickly as possible, and at the same time, the normal use of the LED is guaranteed. , give full play to the advantages of LED, and achieve the original intention of being applied in the field of automotive lighting. The invention can replace the application of traditional halogen lamps and HID xenon lamps, has the effect of emitting rectangular light spots, solves the problem of LED glare, and can be mass-produced.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram of the present invention;

Fig. 2 is a schematic view of the bottom surface structure of the present invention;

Fig. 3 is the front structure schematic diagram of the present invention;

In the figure, 1: LED light source group, 2: reflective cup, 3: claw-shaped heat dissipation shell, 4: reflective cup surface constrained by one parabola, 5: reflective cup surface constrained by another parabola, 6: LED Install the base.

Detailed ways

As shown in the structure of the LED automobile high beam lamp, the reflector 2 includes the first parabolic surface 4, the second parabolic surface 5, the third parabolic surface 4 and the fourth parabolic surface 5 connected in sequence; the first parabolic surface 4 also It is connected with the fourth parabolic surface 5; the first parabolic surface 4 is completely symmetrical to the third parabolic surface 4, the second parabolic surface 5 and the fourth parabolic surface 5 are constrained by the same parabolic surface equation, and the area of the fourth parabolic surface 5 is larger than that of the first parabolic surface The area of two parabolic surfaces 5; the focal points of all the parabolic surfaces coincide, and an LED light-emitting source group 1 is arranged at the focal point, and the LED light-emitting source group is fixed on the LED mounting base 6, and the outside of the LED mounting base 6 is provided with a claw-shaped heat-dissipating shell 3. According to the shape of the emitted light spot, the distance formed by the light spot and the light output rate of the lamp, design the double parabolic line shape that limits the shape of the reflector, and use four high-power LEDs of 1W or 3W to form the LED light source group 1. According to the power of the lamp Calculate the calorific value and main distribution according to the requirements, reasonably calculate the required heat dissipation area, use mechanical mold software to design the heat dissipation structure, and reasonable heat dissipation to ensure the life and normal use of the lamp.

Claims (4)

1. a LED dazzle light tool comprises reflector, it is characterized in that: reflector comprises the first parabola face, the second parabola face, the 3rd parabola face and the 4th parabola face that joins successively; The first parabola face also joins with the 4th parabola face; The first parabola face and the 3rd parabola face be symmetry fully, and the second parabola face and the 4th parabola face are retrained by same parabola face equation, and the area of the 4th parabola face is greater than the area of the second parabola face; The focus of all parabola faces overlaps, and at this focus place LED light emitting source group is set, and LED light emitting source group is fixed on the LED mounting seat.

2. LED dazzle light tool according to claim 1 is characterized in that: LED light emitting source group is made up of four great power LEDs.

3. LED dazzle light tool according to claim 1 and 2 is characterized in that: the LED mounting seat outside is provided with the claw type heat-dissipating casing.

4. LED dazzle light tool according to claim 3, it is characterized in that: the LED mounting seat is provided with aluminium base, and LED light emitting source bond pads is on aluminium base.

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