Large-angle omnidirectional lighting LED (light emitting diode) lamp

Abstract

The invention discloses a large-angle omnidirectional lighting LED (light emitting diode) lamp which comprises a lamp bulb shell and a light emitting unit, wherein the lamp bulb shell covers the light emitting unit; in addition, the large-angle omnidirectional lighting LED lamp also comprises a reflecting unit, and the reflecting unit comprises a light-reflecting component; the light-reflecting component is fixed on the lamp bulb shell, and provided with an annular light-reflecting surface; and the light-reflecting surface of the light-reflecting component is arranged corresponding to the light emitting unit and used for reflecting lights emitted from the light emitting unit to the bottom of the lamp bulb shell. The large-angle omnidirectional lighting LED lamp disclosed by the invention has the advantage of simple structure.

Description

technical field [0001] The invention relates to an LED lighting fixture, in particular to a large-angle omnidirectional lighting LED lamp. Background technique [0002] LED light sources have the advantages of high luminous efficiency, low heat generation, power saving and long life, so their applications are becoming more and more extensive. However, due to the solid light-emitting characteristics of LED light sources, it is difficult to achieve large-angle lighting for the entire lamp like incandescent lamps. Especially for COB (Chip On Board) LED lamps, the LED light source is directly fixed on the heat transfer substrate of the LED lamp by means of COB. Although the heat dissipation efficiency of the LED lamp is improved, since the heat transfer substrate is a flat plate, the LED The luminous angle of the lamp will be less than 180 degrees, so the overall luminous intensity of the LED lamp will be uneven, which affects the lighting effect. [0003] In order to achieve ...

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Problems solved by technology

However, due to the solid luminous characteristics of LED light sources, it is difficult to achieve large-angle lighting for the whole lamp like incandescent lamps.

Especially for COB (Chip On Board) LED lamps, the LED light source is directly fixed on the heat transfer substrate of the LED lamp by means of COB. Although the heat dissipation efficiency of the LED lamp is improved, since the heat transfer substrate is a flat plate, the LED The luminous angle of the lamp will be less than 180 degrees, so the overall luminous intensity of the LED lamp will be uneven, which affects the lighting effect

[0003] In order to achieve large-angle omnidirectional lighting of LED lights, the industry usually arranges light sources on multiple planes with different angles (such as planes and vertical planes), and uses hemispherical bulbs to allow more light over 180° Although this method can achieve large-angle light distribution in terms of light distribution, it still has the following defects: 1. It is difficult to achieve uniform brightness on the surface of the bulb shell, and dark areas and bright spots may appear on the bulb shell; 2. There are great difficulties in mass production, because each light source distribution surface needs to be equipped with an aluminum substrate, which increases the workload of the board; it is difficult for the light source to be automatically arranged and welded to the aluminum substrate, which reduces production efficiency

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