High-power LED bulb

Abstract

The invention discloses a high-power LED bulb with electric shock preventing performance, high safety and long service life. The high-power LED bulb comprises a bulb cap (1), an insulating casing (2), an insulating light-transmitting front bulb shade (3), a light source plate (4) integrated with an LED chip, a radiator (5), a power supply drive component (6) and a thermo-sensitive switch (8), wherein the thermo-sensitive switch (8) is used for cutting off a power supply when the bulb is under high temperature; the front end of the insulating casing (2) is fixedly connected with the insulating light-transmitting front bulb shade (3), so as to form an accommodating cavity; all the light source plate (4), the radiator (5), the power supply drive component (6) and the thermo-sensitive switch (8) are arranged in the accommodating cavity; the radiator (5) comprises a baseplate (50); the bottom surface of the baseplate (50) is a plane surface part tightly clung to the light source plate (4); a heat radiation pillar (51) is arranged on the top surface of the baseplate (50); a lug boss (52) or sunken part which is used for enlarging the radiation area is arranged on the top surface of the baseplate (50); and a plurality of heat radiation grooves (21) communicated with the inner cavity of the insulating casing (2) are formed on the side wall of the insulating casing (2). The high-power LED bulb can be extensively applied to the field of LED illumination.

Description

technical field [0001] The invention relates to a high-power LED light bulb. Background technique [0002] Traditional light bulbs are generally incandescent light bulbs, which have low illuminance, dim light, and are not energy-saving; after incandescent light bulbs, fluorescent light bulbs (also known as energy-saving lamps) appeared. Powder, so not environmentally friendly. At present, there are more energy-saving and environmentally friendly LED light sources, and LED light bulbs are produced thereupon. LED has many advantages such as high luminous efficiency, energy saving and long life, and its application is becoming more and more extensive, representing the development direction of future lighting sources. [0003] LEDs are used in daily lighting. In order to meet the illuminance requirements, it is generally necessary to concentrate multiple power LEDs on one lamp. Therefore, the heat dissipation of LEDs has become an important factor affecting the use status and ...

AI Technical Summary

Problems solved by technology

In order to provide good heat dissipation for existing LED light bulbs, all or part of the lamp housing is generally made of metal such as aluminum, and the light source board integrated with LED chips is connected to the metal lamp housing to improve the heat conduction effect. While improving the effect of heat conduction and heat dissipation, there is a potential danger of short circuit leakage between the metal lamp housing and the light source board and the driving circuit, which poses a safety hazard, especially in high-voltage lamps, which cannot meet the requirements of relevant safety regulations

If it is used in low-voltage lamps, although the safety is better, its efficiency is lower, and the energy-saving effect is therefore compromised.

In addition, none of the existing LED light bulbs is equipped with a high temperature protection device. Once the temperature of the LED light bulb is too high, it cannot protect itself, resulting in a short service life.

Images