Light-emitting diode (LED) bulb
A technology of LED bulbs and LED chips is applied in lighting devices, cooling/heating devices of lighting devices, light sources, etc., to achieve the effects of helping heat dissipation, good convection effect, and uniform astigmatism
Inactive Publication Date: 2012-05-09
XIAMEN YANKON ENERGETIC LIGHTING CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the defects of the prior art and provide an LED light bulb. Through structural improvement, the problem of heat dissipation junction temperature of the LED light bulb chip can be better solved, which not only maintains the excellent characteristics of the existing LED light bulb, but also can Good heat dissipation, which effectively promotes the popularization and use of miniaturized LED bulbs
Method used
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Embodiment Construction
[0022] Embodiment, referring to the accompanying drawings, an LED light bulb of the present invention includes a bulb shell 1, a heat dissipation system 2, an LED chip 3, a circuit board (not shown in the figure) for driving the LED chip, a lamp holder 4 and a lamp cap 5; the upper part of the lamp cap 5 is connected with the lower part of the lamp holder 4, and the circuit board is installed in the lamp holder 4. The heat dissipation system 2 includes upper and lower heat sinks with a hollow structure independent of each other, that is, the upper heat sink 21 and the lower heat sink. Radiating fins 22; the inner surface of the upper cooling fin 21 forms an air cavity along the axial direction of the bulb, and its outer surface is fixedly connected with the LED chip 3; the side of the lower cooling fin 22 is provided with a plurality of through holes 221; the upper cooling fin and the lower cooling fin The fins are fixedly connected, and the through hole 221 of the lower heat s...
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The invention discloses a light-emitting diode (LED) bulb, which comprises a casing of the bulb, a radiating system, an LED chip, a circuit board driving the LED chip to work, a lamp socket and a lamp holder. The radiating system is formed by an upper radiating sheet and a lower radiating sheet. An air cavity body is formed on the inner lateral face of the upper radiating sheet, a through hole is arranged on the lateral face of the lower radiating sheet, the upper radiating sheet is fixedly connected with the lower radiating sheet, and the through hole of the lower radiating sheet is communicated with the air cavity body. An opening is arranged at the top end of the casing of the bulb and communicated with the air cavity body. The air cavity body formed on the inner lateral face of the upper radiating sheet is communicated with the through hole on the lateral face of the lower radiating sheet through the opening at the top end of the casing of the bulb so as to form convection air circulating vertically. The LED bulb can well solve the problem of junction temperature radiating of the chip of the LED bulb, thereby not only maintaining the good performance of an existing LED bulb, but also achieving radiating well, and accordingly forcefully promoting popularization and utilization of a minimized LED bulb.
Description
technical field [0001] The invention relates to a lighting device, in particular to an imitation traditional incandescent light bulb using LED as a light source. Background technique [0002] Lighting lamps are an indispensable daily necessities in people's daily life. The traditional lighting lamps are bulb-shaped incandescent lamps, and their appearance is favored by the public. deficiencies that limit its usefulness. [0003] LED is a light-emitting diode, which is a solid-state semiconductor device that can directly convert electrical energy into light. LED has low voltage, high efficiency, good monochromaticity, strong applicability, good stability, short response time, and long life. It has excellent characteristics such as no pollution to the environment, good safety, low energy consumption, and because each LED unit is small in size, it can be made into lighting fixtures of various shapes to adapt to different environments. Due to the above advantages, LEDs are wid...
Claims
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Patent Timeline
Login to View More IPC IPC(8): F21S2/00F21V29/00F21Y101/02F21V29/503F21V29/507F21V29/83
Inventor 余鹭帆李立军
Owner XIAMEN YANKON ENERGETIC LIGHTING CO LTD