LED bulb

Abstract

The invention provides an LED bulb. The LED bulb comprises a lamp holder, an electronic driver, a transparent bulb shell, an LED light emitting element and cooling liquid, wherein the lamp holder and the electronic driver are connected with an external power supply, the transparent bulb shell is connected with the lamp holder in a sealed mode, the LED light emitting element is sealed in the bulb shell, the bulb shell is filled with the cooling liquid in which the LED light emitting element is immersed, a plurality of sheet-shaped reflectors are suspended in the cooling liquid, the proportion of the sheet-shaped reflectors is in a proportion region determined by the cooling liquid at 40 DEG C and the cooling liquid at 90 DEG C, and the expansion factor of the sheet-shaped reflectors is smaller than that of the cooling liquid. The LED bulb can effectively dissipate heat and improve light distribution.

Description

【Technical field】 [0001] The invention relates to the field of LED lighting, in particular to an LED light bulb. 【Background technique】 [0002] The prior art LED light bulb has been developed to hermetically seal the LED light-emitting element in a transparent bulb to protect the LED light-emitting element and construct the shape of a traditional incandescent bulb, but the bulb itself affects the LED light-emitting element and the outside air. The heat exchange between them, in order to improve the heat exchange, the existing technology is to fill some transparent media with good thermal conductivity inside the bulb, such as helium, water or transparent silica gel, etc., among all the filling materials, use Water-based materials conduct heat best. In addition, because the light distribution of LED light-emitting elements is very different from that of traditional incandescent lamps, it cannot meet the standards required by lighting bulb products. In order to improve this s...

AI Technical Summary

Problems solved by technology

[0004] Known technology exists following shortcoming, 1) adopt the scattering method of above suspension powder turbid liquid, because will avoid the sedimentation of powdery light scattering material, the scale of powder is limited, the light scattering effect of powder is relatively weak, in order to reach required Scattering effect requires an increase in the amount of powder, and increasing the amount of powder will inevitably reduce the light transmittance and reduce the light effect of the product, and because the price of the powder material is related to the particle size, the smaller the more expensive, increasing the quantity reduces the size will increase product cost

2) For liquid filling materials with good thermal conductivity, during use, because the liquid is heated by the LED light source, the hotter liquid floats up due to its light specific gravity, while the lower temperature liquid settles and stays in the lower part, which cannot form heat convection. The thermal conductivity of the liquid filling material cannot be fully utilized

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