CN201187742Y - A high-power LED lamp - Google Patents

Abstract

The utility model discloses a high-power LED lamp, which comprises a high-power LED, a lamp cap and a radiator. The high-power LED is fixed on the radiator, and the radiator is located in a cavity formed between an insulating part and a reflector. The utility model has good internal structure, outstanding heat dissipation effect, scientific optical processing, low processing cost, simple installation and beautiful appearance.

Description

A high-power LED lamp

technical field

The utility model relates to an illuminating lamp, in particular to a lamp using a high-power LED as a light source.

Background technique

At present, the market is mainly dominated by low-power LED lights, and there are still few high-power LED lights. However, compared with low-power LED lights, high-power LED lights have many inherent advantages due to packaging materials and process problems, such as service life and light source consistency. With the continuous improvement of high-power LED luminous efficiency and cost In the future, high-power LED lights will replace low-power LED lights and become the mainstream of the market.

The low-power LED light is a combination of multiple low-power LEDs in series and parallel, and is directly fixed on the PCB circuit board through two pins. Because the LED power is very low, no special heat dissipation design is required, and the cost of low-power LEDs is very low. Designed to be simple to use. However, due to the limited power, after using multiple LEDs in series and parallel, the service life of low-power LEDs is short, it is easy to cause dead lights, the stability is poor, and the consistency of the light source is difficult to control, so it can only be used in some low-power LEDs. end applications.

Due to the small size of the high-power LED lamp, it brings certain difficulties to the heat dissipation and optical processing of the high-power LED. For example, in the LED lamp improved structure patent with the patent number "200720141005.1", a lamp cap is provided outside the lamp, and a light-emitting diode as a light source is provided inside the lamp, and an enlarged heat sink with an area larger than the base area is attached to the bottom of the base. In the patent, since the lamp cap and the lampshade are directly connected, after the LED is fixed on the radiator, the accommodation space between the LED and the lamp cap is limited, and it is difficult to dissipate heat for high-power LEDs, such as expanding the heat dissipation area, etc., and cannot accommodate The cross-current circuit or driving power directly affect the service life and application range of the lamp.

Utility model content

In view of the above problems, the utility model provides a high-power LED lamp.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a high-power LED lamp, including a high-power LED, a lamp holder, and a radiator. The high-power LED is fixed on the radiator, and the radiator is located on the insulating part and the reflector In the cavity formed between;

A lampshade is arranged outside the reflector.

The heat sink and the heat dissipation fins are integrally structured, and the heat dissipation fins have an insulator outside, and a plurality of heat dissipation holes are arranged on the insulator.

The lamp cap can be a screw type or a bayonet type structure.

The insulator includes a hollow cylinder at the upper end and a hollow circular platform at the lower end, and a plane is separated in the middle.

External threads are provided on the outer side of the insulator to cooperate with the threads of the lamp cap to fasten the two.

The heat dissipation fins are distributed with branches of heat dissipation fins.

The reflector is a hollow structure similar to a cylinder or a truncated cone.

The surface of the reflector is coated with aluminum, silver, and/or anti-reflection film.

The inner surface of the lampshade is coated with an anti-reflection film.

The utility model is provided with a cavity structure composed of a reflector and insulating parts inside the lampshade, which expands the interior volume of the lamp and can accommodate the entire radiator, wherein the radiator can be formed by extruding aluminum profiles, with large heat dissipation area and light weight , low cost and simple processing.

The high-power LED light source is fixed in the center of the radiator and protrudes from the reflector. The surface of the reflector is coated with reflective materials, such as aluminum, silver and other materials, and the surface of the reflective material is coated with an enhanced reflection layer, which can effectively increase the light The reflective effect is improved to reduce light loss.

The utility model has good internal structure, outstanding heat dissipation effect, scientific optical processing, low processing cost, simple installation and beautiful appearance.

Instructions attached

Fig. 1 is the three-dimensional schematic diagram of the utility model embodiment 1

Fig. 2 is the sectional schematic diagram of the utility model embodiment 1

Fig. 3 is the radiator schematic diagram of the utility model embodiment 1

Fig. 4 is the three-dimensional schematic diagram of the utility model embodiment 2

Fig. 5 is the sectional schematic diagram of the utility model embodiment 2

Detailed ways

As shown in FIG. 1 , the appearance of this embodiment 1 is a traditional lamp, and the visible parts include a lamp cap 1 , an insulator 2 , a reflector 5 , a high-power LED 4 , and a lampshade 6 . In the figure, the lamp holder 1 adopts various standard thread structures, which is convenient to install and use, and can directly replace the existing lamp. The insulator 2 is connected to the lamp cap 1 and is made of insulating materials such as plastics and ceramics, and is electrically isolated from components below the lamp cap 1 . Evenly distributed on the surface of the insulator 2 are rectangular heat dissipation holes 21, the size, quantity and shape of which can be designed according to the specific use to increase the air convection of the heat sink inside the insulator 2 and the reflector 5 to strengthen heat dissipation. The lampshade 6 is made of materials such as transparent glass or acrylic, and has structures such as a reflector 5 and a high-power LED4 inside. The lampshade 6 can also be made of frosted glass or other translucent plastic materials in various shapes according to the needs of the light effect. Increase the softness and beauty of light. In actual use, the lampshade 6 may not be installed, and the high-power LED 4 and the reflector 5 are directly exposed in the air.

As can be seen in FIG. 2 , Embodiment 1 is specifically composed of a lamp cap 1 , an insulator 2 , a radiator 3 , a high-power LED 4 , a reflector 5 , a lampshade 6 , and a wire 7 . Wherein, a thread 22 is provided on the cylinder of the insulator 2, and the lamp cap 1 and the insulator 2 are tightly fixed by the thread structure, and a plurality of cooling holes 21 are provided on the surface of the hollow circular platform at the lower end of the insulator 2. The radiator 3 is fixed in the cavity formed by the insulator 2 and the radiator 3 . The base end of the high-power LED 4 has a cylindrical protrusion, and a lens is fixed above it. The high-power LED4 is tightly fitted and fixed in the groove 31 at one end of the heat sink 3 through the protrusion of the base, wherein the mechanical contact gap between the high-power LED4 and the groove 31 is coated with heat-conducting glue to increase heat conduction efficiency. Two electrodes of high-power LED4 are welded by wire 7, and lead out on lamp cap 1.

Luminescent materials such as aluminum and silver are coated on the surface of the reflector 5 to increase the reflective effect of the LED light. At the same time, one or more layers of anti-reflection films can also be coated on the surface of the luminescent material to further improve the reflection effect of the reflector 5 .

In FIG. 3 , the radiator 3 is a cylindrical structure with a solid structure in the middle. It is more common to use aluminum alloy extrusion to form directly at one time, and then cut according to the required length. This method of processing has the characteristics of low cost, light weight, and good heat dissipation effect. In addition, materials such as copper and aluminum can also be used for design and processing. A groove 31 is provided at one end of the heat sink 3 for fixing high-power LEDs. Radiating fins 32 are distributed around, wherein the cooling fins 32 have a branch structure, and a multi-branch structure can be made to expand the heat dissipation area.

In FIG. 4 , the lamp holder 1 is a bayonet structure of various standard specifications, and the specific structure includes an insulator 2 , a high-power LED 4 , a reflector 5 , a lampshade 6 and the like. In FIG. 5 , since the lamp cap 1 has no thread structure, the lamp cap 1 and the insulator 2 are connected by bonding or buckling. The driving power supply 8 is installed inside the insulator 2, and is directly connected to the two electrodes of the lamp cap 1 through the wire 10, and the wire 7 passes through the gap between the heat dissipation fins 32 of the radiator 3 to connect the high-power LED 4 with the driving power supply 8 to drive The power supply 8 is connected to the lamp holder 1 through a wire 10 . Since the drive power is installed, the lamp can be used directly under the mains power without purchasing and installing an additional power supply.

In the figure, there is no groove 31 in the center of the radiator 3, and the high-power LED 4 is tightly fixed on the central surface of the radiator 3 by screws 9, and the surface of one end of the high-power LED 4 and the radiator 3 is in close contact, and there is a heat-conducting glue of the same height. Filled with thermally conductive material to increase thermal conductivity. Coating one or more layers of anti-reflection film on the inner surface of the lampshade 6 can effectively increase the light output rate of the light.

The above-mentioned embodiments are only preferred specific implementations of the utility model, and ordinary changes and replacements made by those skilled in the art within the scope of the technical solution should be included in the protection scope of the utility model.

Claims (9)

1, a kind of high-powered LED lamp includes great power LED, lamp holder, radiator, it is characterized in that great power LED is fixed on the radiator, in the cavity that radiator forms between insulating part and reflection shield.

2, according to claims 1 described a kind of high-powered LED lamp, it is characterized in that described reflection shield is outside equipped with lampshade.

3, according to claims 1 or 2 described a kind of high-powered LED lamps, it is characterized in that described radiator and radiating fin are structure as a whole, radiating fin has insulator outward, and some louvres are arranged on the insulator.

4, according to claims 3 described a kind of high-powered LED lamps, it is characterized in that described lamp holder can be screw-type, bayonet type structure.

5, according to claims 1 described a kind of high-powered LED lamp, it is characterized in that described insulating part includes the hollow cylinder of upper end and the hollow round platform of lower end, there is a planar isolated centre.

6, according to claims 1 or 5 described a kind of high-powered LED lamps, it is characterized in that described insulating part arranged outside has external screw thread, cooperate the screw thread of lamp holder, make both fastening.

7, according to claims 3 described a kind of high-powered LED lamps, it is characterized in that described radiating fin is distributed with radiating fin branch.

8,, it is characterized in that described reflection shield is the hollow similar cylinder or the structure of Rotary-table shape according to claims 1 described a kind of high-powered LED lamp.

9,, it is characterized in that described reflection shield surface is coated with aluminium, silver and/or increases anti-film according to claims 1 or 8 described a kind of high-powered LED lamps.

10,, it is characterized in that the inner surface of described lampshade is coated with anti-reflection film according to claims 1 or 8 described a kind of high-powered LED lamps.

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