CN201106831Y - LED lamp radiator - Google Patents

Abstract

The utility model relates to a radiator for LED lamps, in particular to a radiator for LED lamps with a columnar structure and through holes. The utility model can be used for heat dissipation of high-power LEDs. The radiator has a cylindrical structure, and the top of the column is an installation platform for LEDs. There are several through holes around the LED installation area on the installation platform along the axial direction of the radiator. There are also wiring holes for LED leads. The heat dissipation speed of the LED lamp radiator of the utility model is fast, and the technology of combining air convection, heat conduction and heat radiation is used to solve the heat dissipation problem of high-power LEDs; the structure is simple and reasonable, and the natural convection heat dissipation efficiency is high; the manufacture is convenient, Low cost, good cooling effect.

Description

LED lamp radiator

technical field

The utility model relates to a radiator for LED lamps, in particular to a radiator for LED lamps with a columnar structure and through holes.

Background technique

LED is a light-emitting diode, which is a semiconductor solid-state light-emitting device. It uses a solid semiconductor chip as a light-emitting material. In the semiconductor, the excess energy is released through the recombination of carriers to cause photon emission, and directly emit red, blue, green and other colored lights. LED lighting products are lighting appliances manufactured using LEDs as light sources. In the context of the current global energy shortage worries rising again, saving energy is an important issue we face. In the field of lighting, the application of LED light-emitting products is attracting the attention of the world. As a new type of green light source product, LED, It must be the development trend of lighting technology, and the 21st century will be an era of new lighting sources represented by LEDs. LED is called the fourth-generation lighting source or green light source. It has the characteristics of energy saving, environmental protection, long life, and small size. It can be widely used in various indications, displays, decorations, backlights, general lighting and urban night scenes. In recent years, some economically developed countries in the world have launched a fierce technical competition around the development of LEDs.

There is no doubt that LED products have a broad market prospect, especially in the field of lighting. If LED light sources are widely used in the field of lighting, it will be a revolution in the history of human lighting. However, due to technical and other factors, it cannot be widely promoted at present. First of all, no matter what kind of LED products are facing waterproof and moisture-proof sealing problems, if not handled properly, it will directly affect the service life of LED products, and these protective measures will cause the ambient temperature around the LED lamp to rise; secondly, when the external ambient temperature After the rise, the internal resistance of the LED light source will decrease. If a regulated power supply is used for power supply, the working current of the LED will increase. When the rated working current exceeds its rated working current, it will affect the service life of the LED product. bad". Therefore, the heat dissipation problem of LED lamps, especially high-power LED lamps, is the main bottleneck restricting their wide application.

The importance of LED heat dissipation is also that the junction temperature of the LED directly affects the life of the LED. It is generally estimated that if the junction temperature of the LED is reduced by 10°, the life of the LED can be increased by 50%, which shows that the cooling effect is huge.

For this reason, various manufacturers of LED lighting products are seeking structural forms with better heat dissipation effects. Usually adopted is to use heat conduction and thermal radiation principles to design LED cooling devices, such as Chinese utility model patent ZL200520064989. Designed in the shape of a radiator, the heat generated by the LED lamp is conducted to the shell, and then the shell exchanges heat with the air; another example is the Chinese utility model patent ZL200520065298.0 high-power LED lamp cooling device, which describes the LED lamp holder connected to the heat sink , and then the structure of the heat sink connected by bolts also uses the principle of heat conduction. Changing the heat dissipation structure only from heat conduction can solve the heat dissipation problem of low-power LED lights to a certain extent, and the heat generated by high-power LED lights cannot be transferred to the air in a short time. Therefore, it is necessary to fundamentally solve the heat dissipation problem.

Utility model content

The technical problem to be solved by the utility model is to provide a radiator for LED lamps, in particular to provide a radiator for LED lamps with a columnar structure and through holes. The utility model utilizes the combined technology of air convection, heat conduction and heat radiation, makes up for the inadequacies and defects of the prior art that cannot solve the problem of heat dissipation of high-power LEDs, and meets the needs of production and life.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a radiator for LED lamps, which is used for heat dissipation of light-emitting diodes. A number of through holes are formed around the LED installation area along the axial direction of the radiator, and LED lead wiring holes are also arranged on the installation platform.

As a preferred technical solution:

The columnar structure is in the shape of a cylinder.

The columnar structure has a connecting rod in the middle of the reverse side of the LED installation platform to facilitate fixing the radiator.

The connecting rod adopts a solid or hollow structure, and the end of the connecting rod may be threaded for easy installation to the lamp holder.

The columnar structure has several heat dissipation fins, or heat dissipation windows, or a combination of heat dissipation fins and heat dissipation windows.

The columnar structure includes columnar structures including cylinder, truncated cone, prism, truncated prism, waist drum and other columnar geometric shapes.

There are several LED installation areas on the installation platform of the heat sink, and one or several LEDs can be installed and connected with lines.

The radiator is made of aluminum, aluminum alloy, copper or copper alloy.

The through holes are arranged next to the LED mounting area.

As we all know, air convection is due to the uneven heating of the air. The heated air expands and rises, while the cooled air sinks. Convection is the best way for air heat transfer. The utility model utilizes this principle, especially when the LED lamp adopts a protective device, a closed space will be formed around the light source, and the heat generated will cause the ambient temperature of the LED lamp to rise sharply. Through holes and heat dissipation windows are set around, so that the hot air in the confined space convects the cold air behind the lamp, and most of the heat will be quickly lost with the air. The closer the through hole is to the LED, the more obvious the convection effect is; , The utility model adopts a material with good heat conduction effect, and is closely connected with the LED, and the remaining heat will be quickly dissipated through heat conduction and heat radiation. In this way, the working environment temperature of the LED is always kept within a reasonable range. In real life, many devices use fans to implement forced convection, which can receive good heat dissipation. However, the use of fans in luminaires adds significant cost and complexity. The utility model utilizes natural convection rather than forced convection.

The beneficial effects of the utility model are:

The heat dissipation speed of the LED lamp radiator of the utility model is fast, and the technology of combining air convection, heat conduction and heat radiation is used to solve the heat dissipation problem of high-power LEDs; the structure is simple and reasonable, and the natural convection heat dissipation efficiency is high; the manufacture is convenient, Low cost, good cooling effect.

Description of drawings

Fig. 1 is the structural representation of the utility model

Fig. 2 is the structural representation of another form of the utility model

1 is the heat sink 2 is the installation platform 3 is the reflective surface 4 is the installation area 5 is the through hole 6 is the LED lead wiring hole 7 is the heat dissipation fin 8 is the heat dissipation window 9 is the connecting rod

Detailed ways

Below in conjunction with accompanying drawing, the embodiment of the present utility model is described further:

Example 1

As shown in Figure 1, an aluminum LED lamp radiator 1 is used for heat dissipation of LEDs. The radiator 1 is a cylindrical structure with sixteen cooling fins 7, and the top of the column is the installation of the LED. Platform 2 and reflective surface 3, there is a hollow connecting rod 9 in the middle of the reverse side of the installation platform 2, which is convenient for fixing the radiator 1, and the end of the connecting rod 9 is threaded, which is used to connect the nut on the lamp holder and fix the radiator 1, a 5W The LED is installed in the LED installation area 4 on the installation platform 2, and there are eight circular through-holes 5 along the axial direction of the radiator 1 around the LED installation area 4, and two LED lead wirings are also opened on the installation platform 2. The hole 6 communicates with the hollow connecting rod, and the LED lead wire is led out to the lamp holder through the LED lead wiring hole 6 and the hollow connecting rod 9 and connected to the power supply.

Example 2

As shown in Figure 2, a copper LED lamp radiator 1 is used for heat dissipation of high-power LEDs. The radiator 1 is a cylindrical structure with a certain wall thickness similar to a frustum-shaped busbar. There are eight heat dissipation windows 8, and the top is the LED installation platform 2. The radiator 1 is fixed to the lamp holder through the buckle connection on the lamp holder. There are three LED installation areas 4 in an equilateral triangle on the installation platform 2. Three 3W LEDs are respectively installed in their respective LED installation areas 4, and there are sixteen circular through holes 5 along the axial direction of the radiator 1 around the LED installation area 4, and LED leads are also opened on the installation platform 2. Wiring hole 6, the three LED lead wires are connected through wires and lead out from the LED lead wire wiring hole 6 to the lamp holder and connected to the power supply.

Tests have proved that the radiator for LED lamps of the utility model has indeed solved the heat dissipation problem of high-power LEDs, has fast heat dissipation speed, high heat dissipation efficiency, simple and reasonable structure, convenient manufacture, low cost and good heat dissipation effect.

The utility model is not limited to the above-mentioned specific embodiments. Regardless of any changes in the structure and shape of the LED lamp radiator, any LED lamp radiator with a columnar structure and through holes arranged along the column axis all fall into the scope of this utility model. within the new range.

Claims (9)

1. A heat sink for LED lamps, used for heat dissipation of light-emitting diodes, characterized in that: the heat sink (1) is a columnar structure, the top of the column is an installation platform (2) for LEDs, and the LEDs on the installation platform (2) A plurality of through holes (5) and LED lead wiring holes (6) are formed around the installation area (4) along the axial direction of the radiator (1). 2. The heat sink for LED lamps according to claim 1, wherein the columnar structure is in the shape of a cylinder. 3. The heat sink for LED lamps according to claim 2, characterized in that, the columnar structure has a connecting rod (9) in the middle of the reverse side of the LED installation platform (2) to facilitate fixing the heat sink (1). 4. The LED lamp heat sink according to claim 3, characterized in that, the connecting rod (9) adopts a solid or hollow structure. 5. The heat sink for LED lamps according to claim 1, 2 or 3, characterized in that the columnar structure has several heat dissipation fins (7) or heat dissipation windows (8), or a combination of heat dissipation fins and heat dissipation windows combined. 6. The heat sink for LED lamps according to claim 1, 2 or 3, characterized in that the columnar structure includes cylinder, truncated cone, prism, truncated prism, waist drum and other columnar geometric shapes. 7. The radiator for LED lamps according to claim 1, characterized in that there are several LED installation areas (4) on the installation platform (2) of the radiator (1), where one or several LEDs can be installed and realize line connection. 8. The LED lamp heat sink according to claim 1, characterized in that, the heat sink (1) is made of aluminum, aluminum alloy, copper or copper alloy. 9. The heat sink for LED lamps according to claim 1, characterized in that, the through holes (5) are arranged close to the LED installation area (4).

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