High-power white light LED street lamp light source based on remote excitation technology

Abstract

The invention relates to a high-power white light LED street lamp light source based on the remote excitation technology. The high-power white light LED street lamp light source is characterized by being composed of a metal heat-conducting column (1), a blue light chip (2), a transparent ceramic fluorescent tube (3), a heat dissipation sheet (4) and an electrode (5), wherein one end of the metal heat-conducting column (1) is provided with the heat dissipation sheet (4); the blue light chip (2) is tightly attached to the metal heat-conducting column (1); the metal heat-conducting column (1) is arranged in the exact center of the fluorescent tube (3); the metal heat-conducting column (1) is sleeved with the transparent ceramic fluorescent tube (3) capable of conversing blue light into yellow light; the heat dissipation sheet (4) and the metal heat-conducting column (1) are formed integrally, and fins of the heat dissipation sheet (4) are arranged around a central column in the circumferential direction and located under the metal heat-conducting column (1); and the electrode (5) is connected with the blue light chip (2) through an electric connecting wire, and the other end of the electrode (5) is connected with an external power source. Compared with a traditional LED lamp, the temperature of the working environment of the blue light LED chip is effectively lowered, thus, the service life is longer, the energy efficiency is more excellent, and the cost is lower.

Description

technical field [0001] The invention relates to a white light LED street light source, in particular to a high-power white light LED street light light source based on remote excitation technology. Background technique [0002] At present, high-pressure sodium lamps and fluorescent lamps are commonly used in the market. Among them, high-pressure sodium lamps are used most in road lighting because of their high luminous efficiency and strong fog penetration ability. However, it has the disadvantages of high energy consumption and short life. As a semiconductor component, LED lights have a long service life, stronger safety and reliability, and are more environmentally friendly, and have gradually been recognized by the market. [0003] With the gradual maturity of technology and industry, coupled with the pull of government demonstration projects, as the first segmented product in LED lighting applications, LED street lights are veritable "hidden champions". In recent years,...

AI Technical Summary

Problems solved by technology

This technology coats the phosphor powder on the lampshade to avoid direct contact between the phosphor powder and the blue light chip, but this technology also has disadvantages such as astigmatism loss, uneven light intensity distribution, and poor light uniformity.

Therefore, the power of the current white LED light source is generally small, even if there is a LED light source with high power, the price is high, and the development and application are limited to a certain extent.

Images