CN204100024U - A kind of LED with great heat radiation effect - Google Patents

Abstract

There is a LED for great heat radiation effect, the drawing and heat dissipation part that it comprises LED body, radiator and is made up of vertical air channel, connection air channel and heat radiation chamber; The one end in described connection air channel is communicated with vertical air channel, the other end and heat radiation chamber; Described heat radiation chamber is oblique is arranged on the one end being communicated with air channel, and namely LED body is arranged on the end face of heat radiation chamber, and described LED body is fixing on a heat sink; Described radiator is provided with fin; Described vertical air channel is through tubular construction.The utility model structure is simple, and it is convenient to install, perfect heat-dissipating, is very suitable for installing and using in the occasion of street lamp, threshing ground lamp etc.

Description

A kind of LED lamp with good heat dissipation effect

technical field

The utility model relates to an improved LED lamp, in particular to an LED lamp which utilizes the suction effect of air flow to dissipate heat, and belongs to the technical field of lighting.

Background technique

LED lamps have been widely used for their energy saving, environmental protection, high efficiency and other characteristics. However, since LED lamps are semiconductor optoelectronic devices, the heat emitted by them needs to be effectively removed, otherwise it will cause the PN junction to heat up, resulting in luminous flux failure. The efficiency is reduced, and in severe cases, the LED lamp will be damaged. Therefore, how to effectively solve the problem of heat dissipation of LED lamps has always been the focus of research by people in the industry. At present, whether it is a single-point or multi-point light source LED street lamp, there is a problem of heat dissipation. For other light sources, such as 250W high-pressure sodium lamps, even if they work for 5000 hours, their light decay is still small, and the luminous efficiency can still reach 70%. In contrast, high-power LED lamps under the same conditions are not easy to solve due to heat dissipation. , its light attenuation is much larger, and the luminous efficiency usually drops to 30%. If the light efficiency is improved by forcibly increasing the voltage and current, it is easy to cause damage to the LED chip. Therefore, the industry urgently needs a method that can solve the problems of heat dissipation and light decay when using high-power LED lamps.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an LED lamp with a simple structure, convenient installation, which can effectively prevent the LED lamp from overheating and has a good heat dissipation effect.

The problem described in the utility model is solved by the following technical solutions:

An LED lamp with good heat dissipation effect, which includes a LED lamp body, a radiator, and a suction heat dissipation part composed of a vertical air duct, a connecting air duct and a heat dissipation chamber; one end of the connecting air duct is connected to the vertical The air duct is connected, and the other end is communicated with the heat dissipation chamber; the heat dissipation chamber is arranged obliquely at one end of the air passage, and the LED lamp body is arranged on the end face of the heat dissipation chamber, and the LED lamp body is fixed on the radiator; The radiator is provided with fins; the vertical air duct is a continuous cylindrical structure.

The above-mentioned LED lamp with good heat dissipation effect is provided with additional side air inlets; the number of side air inlets is multiple, and are evenly distributed around the radiator.

For the above-mentioned LED lamp with good heat dissipation effect, a plurality of auxiliary ventilation holes are added on the body of the LED lamp, and at the same time, a plurality of ventilation holes communicating with the radiator are provided.

The above-mentioned LED lamp with good heat dissipation effect is provided with heat-conducting silicone grease, and the heat-conducting silicone grease is arranged between the heat sink and the LED lamp body. the

In the above-mentioned LED lamp with good heat dissipation effect, the bottom of the vertical air duct is provided with a main air inlet.

The utility model uses the suction and heat dissipation part composed of the vertical air duct, the continuous air duct and the heat dissipation chamber, and combines the chimney principle with the LED lamp to effectively solve the heat dissipation problem of the LED lamp and prevent the The resulting reduction in luminous efficiency and damage and other issues. Moreover, in order to prevent the problem of water accumulation in the heat dissipation part in rainy and snowy weather, the connecting air passage and the heat dissipation chamber are designed in an inclined manner to prevent the occurrence of internal water accumulation. In addition, the utility model is provided with thermal conductive silicone grease between the radiator and the LED lamp, which can effectively enhance the thermal conductivity between the radiator and the LED lamp. The utility model has the advantages of simple structure, convenient installation and good heat dissipation performance, and is very suitable for installation and use in street lamps, yard lamps and the like.

Description of drawings

Fig. 1 is a structural schematic sectional view of the utility model;

Fig. 2 is a partial schematic diagram along the direction K of Fig. 1 .

The list of labels in the figure is: 1. Vertical air duct, 2. Connecting air duct, 3. Heat dissipation chamber, 4. LED lamp body, 5. Thermal conductive silicone grease, 6. Side air inlet, 7. Fins, 8. Radiator, 9. Main air inlet, 10. Auxiliary ventilation hole.

Detailed ways

Referring to Figures 1 and 2, the utility model includes a LED lamp body 4, a radiator 8 and a suction and heat dissipation part composed of a vertical air duct 1, a connecting air duct 2 and a heat dissipation chamber 3; the suction and heat dissipation part utilizes The principle of "chimney effect" works, that is, when the temperature inside the vertical air duct is higher than the temperature outside the chimney, the hot air in the vertical air duct will rise naturally due to its low density and flow out from the top of the vertical air duct; Due to the high density of the cold air outside the channel, it infiltrates and supplements from the bottom, so as to achieve the purpose of heat dissipation. It has been proved by experiments that the higher the vertical air duct is, the more obvious the effect will be. The connection relationship of the suction and heat dissipation part is: the top of the vertical air duct 1 is an open structure, and the bottom is provided with a main air inlet 9; one end of the connecting air duct 2 communicates with the vertical air duct 1, and the other One end communicates with the heat dissipation chamber 3; the heat dissipation chamber 3 is arranged obliquely on the connecting air passage 2, the other end is fixed with the LED lamp body 4, and the heat dissipation chamber 3 is provided with a heat dissipation chamber connected with the LED lamp body 4. 8; the other end of the radiator 8 is provided with fins 7, and the fins 7 are made of aluminum.

In order to enhance the heat dissipation, the utility model adds side air inlets 6; the side air inlets 6 are arranged in multiples, and are evenly distributed on the radiator 8 to accelerate the heat dissipation of the fins. The radiator is made of copper. In addition, the utility model also adds a plurality of auxiliary ventilation holes 10 on the LED lamp body 4 , and at the same time, a ventilation hole connected thereto is provided on the heat dissipation plate. The shape of the auxiliary ventilation hole 10 and the side air inlet can be circular or rectangular, and the optimal shape is rectangle; the optimal height of the auxiliary ventilation hole 10 and the side air inlet is 70mm.

In order to enhance the thermal conductivity between the LED lamp body 4 and the radiator, the utility model adds a heat-conducting silicone grease 5, and the heat-conducting silicone grease 5 is arranged between the radiator 8 and the LED lamp body 4, which can effectively improve heat dissipation. The thermal conductivity between the device 8 and the LED lamp body 4.

Claims (5)

1. An LED lamp with good heat dissipation, characterized in that it includes an LED lamp body (4), a radiator (8), and a vertical air duct (1), a connecting air duct (2) and a cooling chamber The suction and heat dissipation part of the chamber (3); one end of the connecting air duct (2) communicates with the vertical air duct (1), and the other end communicates with the heat dissipation chamber (3); the heat dissipation chamber (3) It is arranged obliquely at one end of the connecting air passage (2), and the LED lamp body (4) is arranged on the end face of the heat dissipation chamber (3), and the LED lamp body (4) is fixed on the radiator (8); the The radiator (8) is provided with fins (7); the vertical air duct (1) is a continuous cylindrical structure. 2. The LED lamp with good heat dissipation effect according to claim 1, characterized in that: side air inlets (6) are added; the number of side air inlets (6) is evenly distributed on the radiator (8 ) around. 3. The LED lamp with good heat dissipation effect according to claim 1 or 2, characterized in that: a plurality of auxiliary ventilation holes (10) are added on the LED lamp body (4), and at the same time, on the radiator (8) A plurality of ventilation holes communicating with it are provided. 4. The LED lamp with good heat dissipation effect according to claim 3, characterized in that: thermally conductive silicone grease (5) is added, and the thermally conductive silicone grease (5) is arranged between the radiator (8) and the LED lamp body (4 )between. 5. The LED lamp with good heat dissipation effect according to claim 3, characterized in that: the bottom of the vertical air duct (1) is provided with a main air inlet (9).