P-N junction 4pi light emitting high-voltage light emitting diode (LED) and LED lamp bulb

Abstract

The invention discloses a P-N junction 4pi light emitting high-voltage light emitting diode (LED) and an LED lamp bulb. The high-voltage LED comprises a transparent substrate, wherein the two ends of the transparent substrate are provided with electrical lead-out wires; the transparent substrate is provided with at least one string of high-voltage LED chips; each high-voltage LED chip comprises at least two LED P-N junctions which are connected with each other in series; at least one electrical connecting line is arranged between every two P-N junctions; and the two ends of each high-voltage LED chip are provided with at least one metal electrode for welding a bonding wire respectively. The LED lamp bulb comprises a light transmitting bulb shell, a core column, at least one high-voltage LED, a driver and an electrical connector, wherein the core column is provided with an exhaust pipe, an electrical lead-out wire and a bracket; the high-voltage LED consists of the high-voltage LED chips and is fixed on the core column, and the electrodes of the high-voltage LED are connected with the driver and the electrical connector which can be connected with an external power source through electrode lead-out wires of the core column; and the core column and the light transmitting bulb shell are sealed under vacuum to form a sealed cavity which is filled with high-heat-conductivity low-viscosity gas. The invention has the characteristics of high overall lamp efficiency, high reliability, low cost, long life and the like.

Description

technical field [0001] The invention relates to an LED and an LED bulb thereof, in particular to a high-voltage LED and a high-efficiency LED bulb with a P-N junction 4π light output, which are used for lighting. Background technique [0002] In the prior art, there are mainly two types of bulb-shaped LED lamps that can replace incandescent lamps and fluorescent energy-saving lamps: one is composed of several power LEDs, and the other is composed of dozens or more low-power LEDs. Constructed in series and parallel. The former is a low-voltage, high-current device with a driving voltage of several to a dozen V. Most of the bulb-shaped LED lights on the market currently belong to this category; The efficiency of the driver is low, the cost is high, the volume is large, and the life is difficult to match with the LED itself. The driving voltage of the latter is close to the external AC mains, the driver has high efficiency, low cost, and long life, but the reliability of a la...

AI Technical Summary

Problems solved by technology

But because each P-N junction works in the AC state, the luminous efficiency is low; at the same time, the chip with high voltage must also be closely thermally connected with a metal radiator that needs to be exposed to the air, which is not safe

[0004] In order to overcome the shortcomings of the low luminous efficiency of the ACLED, someone changed the above ACLED into a high-voltage DCLED, and the external AC was rectified and filtered to drive the high-voltage DCLED, and the luminous efficiency was significantly improved.

However, the above security issues still exist

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