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LED filament bulb

A technology of LED light bulbs and LED light strips, which is applied in cooling/heating devices of lighting devices, lighting and heating equipment, and semiconductor devices of light-emitting elements, etc. problem, to achieve the effect of solving poor heat dissipation and ensuring luminous efficiency

Active Publication Date: 2014-09-10
连云港晶德照明电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the heat dissipation of tube-type primitive LEDs is limited by the limited diameter (that is, the surface area) of the glass tube. It is difficult to make more powerful LED bulbs without further heat dissipation measures.

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0031] Embodiment 1: as figure 1 As shown, it is a schematic diagram of the implementation of a filament LED bulb in which a tube-shaped primitive LED is installed on a transparent tube with a semicircular groove. The transparent tube is made of quartz glass tube, hereinafter referred to as the quartz transparent tube. A filament LED light bulb comprises a lamp base 6, a plastic lamp base 4 and a glass bulb shell 7, the lamp base 6 is fixed on the upper end of the plastic lamp base 4, the glass bulb shell 7 is installed on the lower end of the plastic lamp base 4, and the driving power is built in the lamp base 6. The LED light-emitting element is a tube-shaped base unit LED1, and the outer diameter of the tube-shaped base unit LED1 is 3.2 mm and the length is 53 mm. and open like figure 2 , 3 , 4 and 5 shown in the quartz transparent tube 2 of the semicircular groove 11, the outer diameter of the quartz transparent tube 2 is 25mm, the wall thickness is 2.0mm, and the leng...

Embodiment 2

[0035] Embodiment 2: as Image 6 As shown, a filament LED light bulb uses a COB-packaged LED light bar as the LED light-emitting element. The outer diameter of the LED light bar is 2.2mm and the length is 45mm. The light bulb includes a lamp cap, an aluminum alloy lamp holder 12 is fixed under the lamp cap, the lower end of the aluminum alloy lamp holder 12 is connected with a bulb shell, and the bulb shell is filled with neon gas at half an atmospheric pressure, and the transparent tube is arranged in the bulb shell. Its upper part is close to the inner wall of the aluminum alloy lamp holder 12, and the edge can be bonded by glue. The wall thickness of the transparent tube is 3.5mm, the length is 75mm, and the insertion depth is about 25mm. There are 12 semicircular grooves with a diameter of 2.25mm on the transparent tube under the metal lamp holder. 12 LED light strips are pasted in the semicircular groove with transparent silicone. The 12 LED light bars are connected in ...

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Abstract

The invention relates to an LED filament bulb comprising an inner heat sink made of a transparent tube. LED light-emitting elements are arranged on the outer surface or inner surface of the transparent tube. The transparent tube serves as the inner heat sink; the LED light-emitting elements are disposed on the transparent tube; heat produced by the LED light-emitting elements is dissipated in manners, such as heat conduction, heat radiation and heat convection, and cooling is achieved. The problem that the traditional heat sink is poor in radiating performance is solved, and photoelectric indexes, such as luminous efficiency, light maintenance rate and service life, of the LED filament bulb assembled in a transparent manner are guaranteed effectively.

Description

technical field [0001] The invention relates to the technical field of LED lighting, in particular to a filament LED light bulb. Background technique [0002] Assembling several COB-packaged LED strips in a transparent bulb shell, the so-called filament LED bulb not only has the same warm color temperature as traditional incandescent lamps, but also its luminous efficiency and life expectancy far exceed that of incandescent lamps. index, the energy saving efficiency is remarkable after replacement. [0003] The LED bulb assembled with 2 to 4 filament LEDs has an inert gas inside the bulb shell. The inert gas not only protects the luminescence itself of the LED, but also reduces the temperature of the LED through the convection effect, and the luminous efficiency reaches about 120Lm / W, which can replace the traditional incandescent lamp of 15w-40w. However, tests have shown that when 6 or more filament LEDs are used to assemble an LED bulb, the luminous efficiency drops by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V29/00F21V19/00F21V23/00F21Y101/02F21Y115/10
Inventor 贾爱平
Owner 连云港晶德照明电器有限公司
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