Light emitting diode (LED) spherical lamp transmitting heat through liquid

Abstract

The invention discloses a light emitting diode (LED) spherical lamp transmitting heat through liquid. The LED spherical lamp comprises a lamp cap assembly formed by a lamp cap and a lamp connecting seat, a hollow radiator, a driving power supply, a light emitting assembly formed by a light engine module and a high-transmittance temperature-resistant protective cover, and a glass cover, wherein a power supply containing cavity is arranged inside the hollow radiator, a seal cover is sleeved outside the driving power supply, the bottom of the seal cover is connected with the inner circumferential wall of the hollow radiator in sealed mode, a sealed liquid circulation radiating channel is formed by a gap between the high-transmittance temperature-resistant protective cover and the glass cover and a gap between the seal cover and the hollow radiator in communicated mode, and high-thermal conductivity liquid is installed in the liquid circulation radiating channel. Heat produced by light of lighting of LED lamp beads in the light engine module heats the high-thermal conductivity liquid, the high-thermal conductivity liquid produces convection in the liquid circulation radiating channel after being heated, the heat is diffused into air through the glass cover and the hollow radiator, and the radiating mode is good in effects, and the junction temperature of the LED lamp beads can be effectively reduced.

Description

technical field [0001] The invention relates to a high-power LED light source, in particular to a liquid heat-transfer LED spherical lamp. Background technique [0002] With the rapid development and maturity of LED (Light Emitting Diode, light-emitting diode) technology, LED light source, as a new type of energy-saving light source, has become more and more More and more occasions use LED light sources instead of traditional light sources for lighting. [0003] As we all know, LED light sources, like traditional light sources, will generate heat during operation. Under the action of external energy, LED light sources will convert 30 to 35% of the energy into light energy through the electrogenic effect of radiation recombination of electrons and holes. The other 65-70% of the energy is converted into heat energy by the lattice vibration that occurs rather than radiative recombination. The LED lamp bead is a light-emitting part that is very sensitive to temperature. Only w...

AI Technical Summary

Problems solved by technology

However, in order to meet the demand for high luminous flux of general lighting, people carry out the research and development of high-power LED lamps of 9W and above. It is necessary to control the temperature of the LED pins below 80 degrees Celsius, and to obtain high luminous efficacy and long life. , which makes the heat dissipation design requirements of high-power LED lamps higher, and the surface area of ​​the heat sink has to be increased to dissipate a large amount of heat. Such a heat sink has a heavy mass, a large amount of metal, a large volume, complex manufacturing, and high cost.

[0004] At present, various heat dissipation technologies, such as heat pipes, micro heat pipes, water cooling, air cooling, etc., are usually used to dissipate heat from LED lights. These heat dissipation technologies can achieve better heat dissipation effects on LED lights with a power below 10W. It is difficult for high-power LED lamps of 10W and above to achieve a good heat dissipation effect, which will not be able to meet the product quality requirements of high light efficiency and long life.

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