Throttling expansion technology based high heat dissipation LED lamp and working principle thereof

Abstract

The invention discloses a throttling expansion technology based high heat dissipation LED lamp and a working principle thereof. The LED lamp includes a lamp body, a heat dissipator and an anti-glare cup; the lamp body is arranged in the heat dissipator; the anti-glare cup sleeves on the end part of the heat dissipator; the heat dissipator is a double ring structure; the anti-glare cup is providedwith multiple diversion holes, and is designed according to a throttling expansion technology; a cooling effect, also called Joule-Thomson effect, can be generated through tiny pressure changes when air flows in the cup opening of the anti-glare cup, enters the diversion holes and encounters resistance; and the temperature of the air entering from the cup opening of the anti-glare cup can be lowered for 2-3 DEG C according to the effect. The advantages of the lamp are that the cooling speed of the heat dissipating body can be greatly accelerated, and the junction temperature of the LED can bedirectly and effectively reduced; through the double ring design of the heat dissipating body, the heat radiation area can be multiplied, the junction temperature of the LED can be lowered for 5-10 DEG C, and the final service life of lamps can be 100% prolonged and the light decay per 10,000 hours is smaller than or equal to 10% through LED circuit design optimization.

Description

Technical field [0001] The invention relates to a high heat dissipation LED lamp based on throttling expansion technology and its working principle, and belongs to the field of LED technology. Background technique [0002] Under the background that the current global energy shortage is rising again, energy saving is an important issue we face in the future. In the field of lighting, the application of LED light-emitting products is attracting the attention of the world. LED is a new type of green light source product. It must be the trend of future development. The 21st century will enter the era of new lighting sources represented by LEDs. With the further maturity of LED technology, LED lamps will achieve more and better development in the field of indoor and outdoor lighting. Today, LED lamps have been heavily invested in lighting projects. In the next few years, LED lamps will develop into cities An indispensable part of the lighting project. At present, in specialty stores...

AI Technical Summary

Problems solved by technology

At present, LED spotlights are often used to provide lighting and product light effects in specialty stores, shopping malls, and showrooms. As we all know, LEDs are currently photoelectric devices, and only 15%-25% of their electrical energy is converted into light energy during their work. , the rest of the electrical energy is almost converted into heat energy, which makes the temperature of the LED rise. Then the heat dissipation determines the light output rate and final life of the LED. The higher the junction temperature, the lower the light output rate of the LED, and the shorter the life. Cooling is a major problem that LED urgently needs to solve

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