CN202708882U

CN202708882U - Heat pipe heat dissipation light-emitting diode (LED) streetlamp

Info

Publication number: CN202708882U
Application number: CN2012204133831U
Authority: CN
Inventors: 何乾生
Original assignee: ZHEJIANG HONGYUAN LAMPS CO Ltd
Current assignee: ZHEJIANG HONGYUAN LAMPS CO Ltd
Priority date: 2012-08-20
Filing date: 2012-08-20
Publication date: 2013-01-30
Anticipated expiration: 2022-08-20

Abstract

The utility model discloses a heat pipe heat dissipation light-emitting diode (LED) streetlamp which comprises a semi-cylindrical lamp housing, a lamp housing end cover and LED lamp beads; plate-shaped light-transmittance covers which are connected above the lamp housing and the lamp housing end cover are arranged below the LED lamp beads; direct heating pipes are arranged on the LED lamp beads; arc-shaped heat pipes are communicated above the direct heating pipes; and cantilever heat pipes are communicated above the arc-shaped heat pipes. The heat pipe heat dissipation LED streetlamp has the beneficial effects that because the direct heating pipes are arranged on the LED lamp beads, the arc-shaped heat pipes are communicated above the direct heating pipes, the cantilever heat pipes are communicated above the arc-shaped heat pipes, the direct heating pipes are communicated with the internal cavities of the arc-shaped heat pipes and the cavities contain inorganic heat transfer media, axial heat dissipation fins are attached on the surfaces of the cantilever heat pipes, and the technical scheme of a past technology that single pipes are adopted to dissipate heat is changed. According to the heat pipe heat dissipation LED streetlamp, the heat is dissipated by connecting heat dissipation pipes, so that not only is a space effectively saved but also a good heat dissipation effect is achieved.

Description

A kind of LED street lamp with heat pipe for heat dissipation

Technical field

The utility model relates to a kind of LED light fixture, is specifically related to a kind of LED street lamp with heat pipe for heat dissipation.

Background technology

The LED street lamp is the novel lamp source that the public illumination field is used for replacing conventional road lamp (mercury lamp, sodium vapor lamp) with the first-selected product that the advantages such as its exclusive long-life, energy-conserving and environment-protective, high brightness become energy-conserving road lamp.Therefore, countries in the world are all with the Application and Development of the LED street lamp key project as national energy-conserving and environment-protective, and list in the national budget.The LED illumination is with lighting engineering owing to its economize on electricity, environmental protection, long-life and be acknowledged as next.But it is heat energy that LED has 70% more than electric energy conversion, must heat radiation, develop by leaps and bounds although the LED luminescence technology is existing, the report that every watt of luminous 200lm of reaching is arranged, but the LED heat radiation is the problem of having a headache very much in the LED illumination, has become the road blocking tiger on the universal road for development of LED illuminating lamp.

The LED light fixture mainly is comprised of led chip, cooling system and three parts of driving power, and cooling system is very large on the impact of life-span of led chip, is placed in the different light fixtures with the chip of same quality, and the life-span can differ several times even tens times.Whether a kind of design of light fixture is successful, and except light path system, cooling system plays decisive role.

LED is as the generation new light sources after incandescent lamp, gas-discharge lamp, have the light efficiency height, energy-saving and environmental protection are pollution-free, be not afraid of many advantages such as vibrations, a maximum application obstacle of the current existence of LED street lamp is exactly the too high problem of junction temperature, and this problem has been listed in important brainstorm subject in the world.At present, the junction temperature of high-power LED street lamp still is stuck in about 70 ℃, and the best junction temperature of LED lamp is below 60 ℃, and the too high meeting of junction temperature causes the series of problems such as light decay phenomenon and reduction in service life, and this also makes the application of LED street lamp be subject to difficult restriction of having gone beyond.Present single heat-pipe radiator has been applied to the LED road lamp cooling, if use single heat-pipe radiator for high-power LED street lamp, certainly will cause the heat-pipe radiator volume larger, LED street lamp monnolithic case size is increased, and this gives the lamp installation space, light fixture is moulded and the convenience of lamp installation is brought adverse effect.

The utility model content

The purpose of this utility model is to propose a kind of LED street lamp with heat pipe for heat dissipation, to solve the bad problem of LED road lamp heat radiation in the prior art.

For reaching this purpose, the utility model by the following technical solutions:

A kind of LED street lamp with heat pipe for heat dissipation, comprise half-terete lamp housing, lamp housing end cap, LED lamp pearl, the below of described LED lamp pearl is provided with the tabular diffuser that is connected on lamp housing and the lamp housing end cap, be provided with the directly-heated pipe on the described LED lamp pearl, be communicated with the arc heat pipe on the described directly-heated pipe, be communicated with the cantilever heat pipe on the described arc heat pipe.

As a kind of preferred, described directly-heated pipe and arc heat pipe are the metal tube of the good sealing of thermal conductivity.

Especially, the surface of described cantilever heat pipe is with axial radiating fin.

Preferably, described directly-heated pipe and arc inside heat pipe cavity mutual conduction, and cavity includes the inorganic heat Transfer Medium.

Especially, described directly-heated pipe is horizontal, and its middle part, bottom side is provided with the installation flat-bottom slot of LED lamp pearl, is connected by screw the heat sink plate of LED lamp pearl on the described groove bottom, and adds heat conductive silica gel at contact-making surface.

Preferably, the end that described cantilever heat pipe is communicated with the arc heat pipe is low side, and an end that is communicated with the lamp housing end cap is high-end, is skewed, and described cantilever heat pipe is a plurality of, is arranged parallel to each other.

The beneficial effects of the utility model are: owing to be provided with the directly-heated pipe on the described LED lamp pearl, be communicated with the arc heat pipe on the described directly-heated pipe, be communicated with the cantilever heat pipe on the described arc heat pipe, described directly-heated pipe and arc inside heat pipe cavity mutual conduction, and cavity includes the inorganic heat Transfer Medium, the surface of described cantilever heat pipe is with axial radiating fin, change technology in the past and adopted single tube heat dissipation technology scheme, the mode that the utility model takes radiating tube to connect is dispelled the heat, not only effectively save the space, also had good radiating effect.

Description of drawings

The decomposition texture schematic diagram of a kind of LED street lamp with heat pipe for heat dissipation that Fig. 1 provides for the utility model specific embodiment 1;

The radiator structure schematic diagram of a kind of LED street lamp with heat pipe for heat dissipation that Fig. 2 the utility model specific embodiment 1 provides;

The directly-heated pipe of a kind of LED street lamp with heat pipe for heat dissipation that Fig. 3 the utility model specific embodiment 1 provides and LED lamp pearl mounting structure schematic diagram.

Among the figure:

1, lamp housing; 2, diffuser; 3, LED lamp pearl; 4, cantilever heat pipe; 11, lamp housing end cap; 31, heat sink plate; 32, light distributing cap; 33, monomer LED; 41, directly-heated pipe; 42, arc heat pipe.

The specific embodiment

Further specify the technical solution of the utility model below in conjunction with accompanying drawing and by the specific embodiment, a kind of LED street lamp with heat pipe for heat dissipation, as scheme shown in the l, a kind of LED street lamp with heat pipe for heat dissipation, described light fixture is a semi-enclosed structure, comprise half-terete lamp housing l, lamp housing end cap 11, LED lamp pearl 3 and cantilever heat pipe 4, lamp housing end cap 11 is being provided with the tabular diffuser 2 that is connected on lamp housing 1 and the lamp housing end cap 11 at the front end of lamp housing l below the LED lamp pearl 3.

Such as Fig. 2, heat-pipe radiating apparatus comprises by a directly-heated pipe 41 and the transition heat pipe that arc heat pipe 42 is formed by connecting, also comprise the cantilever heat pipe 4 that is installed between arc heat pipe 42 and the lamp housing end cap 11, the cantilever heat pipe is a plurality of, be cantilever-shaped, cantilever heat pipe 4 is parallel to each other, and its same end is vertically connected on the arc heat pipe 42, the internal cavities mutual conduction of directly-heated pipe 41, arc heat pipe 42 and directly-heated pipe, and cavity includes the inorganic heat Transfer Medium.

Heat-pipe radiating apparatus is the metal tube of the good sealing of a thermal conductivity, and its heat conduction velocity is 30,000 times of argent, makes the heat of its derivation extremely approach the heat that produces, and can keep dynamic equilibrium, eliminates heat accumulation, can realize the purpose of dynamic fast cooling.

Horizontal such as Fig. 2, Fig. 3 directly-heated pipe 41, its middle part, bottom side is provided with the installation flat-bottom slot of LED lamp pearl 3, is connected by screw the heat sink plate 31 of the good pearl of LED on the groove bottom, and adds heat conductive silica gel at contact-making surface, to reduce the thermal resistance in the heat transfer process.The surface of cantilever heat pipe 4 farthest increases area of dissipation with axial radiating fin, and the heat that radiating fin distributes is dispersed in the external environment by cross-ventilation.The LED light fixture is comprised of LED lamp pearl 3, heat sink plate 31, light distributing cap 32 and the monomer LED33 that is attached on the heat sink plate, during assembling, the high end of one end of cantilever heat pipe 4 is low to be skewed, and the angle of cantilever heat pipe 4 and horizontal plane is greater than 5 °, satisfy the instructions for use of heat pipe heat radiation, the end that cantilever heat pipe 4 is connected with arc heat pipe 41 is low side, and the other end connects lamp housing end cap 11, is parallel to each other between each cantilever heat pipe 4.

Above embodiment has just set forth basic principle of the present utility model and characteristic; the utility model is not limited by above-described embodiment; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various variations and change, and these variations and change all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. LED street lamp with heat pipe for heat dissipation, comprise half-terete lamp housing, lamp housing end cap, LED lamp pearl, the below of described LED lamp pearl is provided with the tabular diffuser that is connected on lamp housing and the lamp housing end cap, it is characterized in that: be provided with the directly-heated pipe on the described LED lamp pearl, be communicated with the arc heat pipe on the described directly-heated pipe, be communicated with the cantilever heat pipe on the described arc heat pipe.

2. a kind of LED street lamp with heat pipe for heat dissipation as claimed in claim 1, it is characterized in that: described directly-heated pipe and arc heat pipe are the metal tube of the good sealing of thermal conductivity.

3. a kind of LED street lamp with heat pipe for heat dissipation as claimed in claim 1 is characterized in that: the surface of described cantilever heat pipe is with axial radiating fin.

4. a kind of LED street lamp with heat pipe for heat dissipation as claimed in claim 1 is characterized in that: described directly-heated pipe and arc inside heat pipe cavity mutual conduction, and cavity includes the inorganic heat Transfer Medium.

5. a kind of LED street lamp with heat pipe for heat dissipation as claimed in claim 1, it is characterized in that: described directly-heated pipe is horizontal, its middle part, bottom side is provided with the installation flat-bottom slot of LED lamp pearl, is connected by screw the heat sink plate of LED lamp pearl on the described groove bottom, and adds heat conductive silica gel at contact-making surface.

6. a kind of LED street lamp with heat pipe for heat dissipation as claimed in claim 1, it is characterized in that: the end that described cantilever heat pipe is communicated with the arc heat pipe is low side, and an end that is communicated with the lamp housing end cap is high-end, is skewed, and described cantilever heat pipe is a plurality of, is arranged parallel to each other.