LED (light emitting diode) street lamp device

Abstract

The invention belongs to the technical field of LED (light emitting diode) light sources, in particular to an LED street lamp device. The LED street lamp device mainly comprises a vacuum heat pipe bracket radiator, a heat exchange plate, an LED light source module, a light distribution module, a drive power supply module and a main lamp post, wherein one end of the vacuum heat pipe bracket radiator is closely attached to the LED light source module through the heat exchange plate and serves as a hot end, the other end of the vacuum heat pipe bracket radiator, far from the LED light source module, serves as a cold end, the cold end is higher than he hot end, a liquid working medium is filled in a pipe of the vacuum heat pipe bracket radiator, wherein fins can be welded on the outer wall of the vacuum heat pipe bracket radiator so as to expand the cooling surface. According to the invention, the cooling problem of the high-power LED light source module is effectively solved, the cost of the radiator is lowered, the weight of a street lamp is greatly reduced, and the safety is improved. The LED street lamp device has the characteristics of simple structure, low cost, easiness in assembly, disassembly and maintenance, small size, light weight, low light attenuation and the like.

Description

technical field [0001] The invention belongs to the technical field of LED light sources, and in particular relates to a high-power lighting device, in particular to an LED street lamp device for outdoor and road lighting. Background technique [0002] Outdoor lighting requires luminous flux of lamps ranging from 4000lm-40000lm. The most efficient 160lm / W solid-state light source currently on the market also requires a single lamp power of 30W-300W, of which more than 70% of the power needs to be consumed in the form of heat. Loose, according to 50cm 2 Calculating the area of ​​the radiator per W, the weight of the aluminum radiator ranges from a few kilograms to tens of kilograms, which not only increases the cost of the lamp, but also poses a great safety hazard when installed in high altitude. The design of traditional gaseous light source lamps does not have the problem of heat dissipation, and mainly considers the problem of light distribution and sealing. In the past,...

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Problems solved by technology

[0003] Chinese invention patent, patent number CN101526204, discloses a "high-power forced heat dissipation type heat pipe LED lighting device" which uses a heat pipe with forced air cooling to dissipate heat for LEDs. Although it has a certain effect, there are also major problems: one On the one hand, forced air cooling is not reliable. If the fan used for forced air cooling fails, it will inevitably cause the LED junction temperature to be too high and fail; The capillary of the diameter heat pipe is easy to block, which reduces the thermal conductivity of the heat pipe or even causes high thermal resistance. Moreover, the compact fin structure has low openness and low air convection heat dissipation efficiency. Even if the heat can be exported to the fin through the heat pipe in time, it cannot be timely Dissipate to the environment; third, heat pipes and forced air cooling devices will increase system energy consumption and manufacturing costs, compared with traditional bulky large-area aluminum radiators, there is no significant advantage

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