High-power light-emitting diode (LED) street lamp

Abstract

A high-power light-emitting diode (LED) street lamp belongs to the technical field of LED lamps and comprises a heat pipe radiator, a base board, a pressing board, an LED lamp board, a glass lamp shade, a power source, a lamp rod fixing frame, a self-tapping screw, an alternative-current cable socket, a direct-current cable plug and a cable protective port. A heat pipe radiating mode is utilized to radiating heat of a light source, and the heat of the lamp light source is quickly dissipated through the evaporation and condensation circulation process of the liquid packaged in a heat conduction pipe in vacuum mode. By means of the integral design of the heat pipe radiator and the lamp, radiating fins of the lamp can be completely exposed in the air, the advantages of the heat pipe radiator is fully displayed, radiating efficiency of the heat pipe radiator is greatly improved, light failure of the lamp light source is remarkably reduced, and service life of the lamp is prolonged. The lamp utilizes the light distribution mode of LED lamp bead bimodal type lens package combined with a reflecting cup so that double indexes of uniformity degree of illumination of the lamp are considered, and light efficiency of the lamp is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of light-emitting diode lamps, in particular to a high-power (60-200 watt) LED (light-emitting diode) street lamp. Background technique [0002] High-power LED street lamp is a new lighting fixture developed in recent years. It uses LED (light-emitting diode) as the light source. Compared with traditional lighting fixtures, it has the remarkable characteristics of energy saving and long service life. However, since LED (light-emitting diode) is a semiconductor device, its junction temperature must be strictly controlled during operation. If the junction temperature of the LED light source cannot be effectively controlled, its service life will be greatly reduced. [0003] At present, the market mainly adopts the following structural forms for the junction temperature control of LED lamps: [0004] (1) The shell of the lamp is made of die-casting aluminum material, and the rack is die-casted by the die-casti...

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Problems solved by technology

[0007] Through repeated experiments, it is concluded that the first two lamp structures can control the junction temperature of the LED light source at about 80-85 degrees Celsius. According to the relationship between the LED junction temperature and the service life of the LED light source, it can be calculated that the service life of the light source is 3 About 10,000 hours (the luminous flux decays to 70% of the initial value as the end of life), which is much shorter than its service life of more than 50,000 hours; the third type of lamp uses a heat pipe radiator, and its heat dissipation effect should be obviously better Compared with the first two, but due to the structure of the radiator plus the lampshade, the best heat dissipation effect of the heat pipe radiator is affected. At the same time, the lampshade is added to make the structure of the lamp complicated. The life of the lamp with better temperature rise control in this structure is generally 3.5 -40,000 hours

[0008] In short, the heat dissipation effect of the lamps with the above three heat dissipation structures is not ideal, the main reason is that the heat of the LED lamp beads cannot be directly and quickly conducted

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