CN201448707U - A super-high-power LED street lamp with heat pipe for heat dissipation - Google Patents

Abstract

An ultra-high-power LED street lamp with heat pipe for heat dissipation relates to the field of lighting street lamps and mainly solves the heat dissipation problem of the ultra-high-power LED street lamp. Including the light pole, the light pole includes a cross bar and an upper support bar, the LED lamp head is arranged on the cross bar, and a lamp bead is arranged inside the LED lamp head, and the lamp bead is connected with a heat pipe radiator, and the feature is that the The lower end of the heat pipe radiator is connected to the lamp beads in the LED lamp holder, the middle part is connected to the upper support rod, and the upper end is a cantilever structure. The heat pipe radiator is inclined relative to the horizontal plane, and the surface of the heat pipe is attached with cooling fins. Due to the adoption of composite cooling measures, the LED junction temperature of super-high-power LED street lights above 50W can be controlled within 60°C, which increases the service life of the LED by 20%, basically eliminates the light decay of the LED light beads, and maximizes the LED. Maximize its light effect.

Description

A super-high-power LED street lamp with heat pipe for heat dissipation

technical field

The utility model relates to the field of lighting street lamps, in particular to a super-high-power LED street lamp with heat pipes for heat dissipation.

Background technique

LED street lamps have become the first choice for energy-saving street lamps due to their unique advantages of long life, energy saving and environmental protection, and high brightness. Therefore, all countries in the world regard the development and application of LED street lamps as a key project of energy conservation and environmental protection in their country, and include them in the national budget.

Generally, ultra-high power LED street lights refer to street lights above 5W. One of the biggest obstacles to the application of this LED street lamp is the problem of high junction temperature, which has been listed as an important research topic in the world. At present, the junction temperature of high-power LED street lamps is still stagnant at about 70°C, while the optimum junction temperature of LED lights is below 60°C. Excessive junction temperature will lead to a series of problems such as light decay and reduced lifespan, making the LED street lamps Applications are subject to insurmountable restrictions.

Utility model content

The purpose of the utility model is to overcome the shortcomings of the prior art and provide a super-high-power LED street lamp with a heat pipe for heat dissipation. The street lamp can meet the heat dissipation requirements of the super-high-power LED street lamp and has a simple structure.

The technical solution adopted by the utility model to solve the technical problem is: a super-high-power LED street lamp with heat pipe for heat dissipation, including a lamp post, the lamp post includes a cross bar and an upper support bar, and the LED lamp head is arranged on the cross bar. A lamp bead is arranged inside the lamp cap, and the lamp bead is connected with the heat pipe radiator. It is characterized in that the lower end of the heat pipe radiator is connected with the lamp bead in the LED lamp cap, the middle part is connected with the upper support rod, and the upper end is a cantilever structure. The heat pipe radiator is inclined relative to the horizontal plane, and heat dissipation fins are attached to the surface of the heat pipe.

In consideration of actual installation and heat dissipation requirements of the heat pipe radiator, the installation angle between the axis of the straight section of the heat pipe radiator and the horizontal line is 5°-45°.

For the convenience of installation, especially for the actual needs of retrofitting existing street lamps, the heat pipe radiator and the LED lamp bead are connected together through a transition piece heat conducting column.

The LED lamp bead includes a heat sink plate connected to the heat pipe radiator, the heat sink plate is connected to the fixed plate, the transparent light distribution cover is connected under the fixed plate, and the periphery of the fixed plate is equipped with An air inlet and an air outlet for air cooling and heat dissipation in the photomask, and a miniature blower is arranged at the air inlet.

The radiator is a heat pipe heat transfer element.

The beneficial effects of the utility model are:

This kind of super-high-power LED street lamp with heat pipe heat dissipation adopts composite heat dissipation measures. On the one hand, the heat generated on the heat sink plate is conducted through the heat pipe radiator, and on the other hand, the heat generated by the lamp beads in the transparent light distribution cover is transferred through Forced air-cooled discharge; therefore, the LED junction temperature of super-high-power LED street lights above 50W can be controlled within 60°C, which increases the service life of the LED by 20%, basically eliminates the light decay of the LED light beads, and maximizes the LED play its light effect.

In addition, the unique heat pipe radiator structure not only increases the heat dissipation area, but also stabilizes the stress structure of the light pole, taking into account the structural and modeling needs of the light pole.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Figure 2 is a partially enlarged view of the LED lamp bead.

In the figure: 1 light pole, 11 upper support rod, 2 cross bar, 3 LED lamp bead, 31 fixed plate, 311 air inlet, 312 air outlet, 32 heat sink plate, 33 light distribution cover, 34 single LED, 4 heat pipe for heat dissipation device, 41 heat pipes, 42 cooling fins, 5 miniature hair dryers, 6 lamp shells, and 7 light-transmitting lampshades.

Detailed ways

As shown in FIG. 1 , a super-high-power LED street lamp with heat pipe for heat dissipation includes a lamp pole 1 , a cross bar 2 , an upper support rod 11 , a heat pipe radiator 4 and a lamp. The lamp includes a lamp housing 6 , LED lamp beads 3 and a light-transmitting lampshade 7 . The LED lamp bead 3 is made up of a fixed plate 31, a heat sink plate 32, a transparent light distribution cover 33 and a single LED 34 attached to the heat sink plate, the heat sink plate 32 is fixed in the middle hole of the plate 31, and the transparent light distribution cover 33 Connect to the bottom of the fixed plate, as shown in Figure 2. One end of the cross bar 2 is connected to the light pole, and the other end is connected to the lamp housing 6 . The upper support rod 11 is integrated with the light pole to support the heat pipe radiator 4 .

There is a hole on the top of the lamp housing 6 for passing through the heat pipe; the heat pipe radiator 4 is a circular heat pipe 41 with cooling fins 42 on the surface, and the lower end of the heat pipe 41 is high, The upper end is low, and the angle between the heat pipe 41 (straight line section) and the horizontal plane is greater than 5° and generally less than 45°, which meets the requirements for heat dissipation of the heat pipe; Add thermal silicone. The middle part of the heat pipe 41 is fixed on the light pole 1 . The upper end of the heat pipe radiator 4 is a cantilever structure.

As shown in Fig. 2, there are air inlet 311 and air outlet 312 oppositely arranged on the periphery of the fixed plate 31 of the LED lamp bead, and the micro blower 5 is connected at the air inlet 311, and the air outlet 312 is opened. During normal operation, the heat generated by the LED lamp beads is directly dissipated by the heat pipe radiator in direct contact with it. At the same time, the heat generated by the lamp beads in the light distribution cover is also taken away by the airflow generated by the micro hair dryer, which strengthens the protection of the LED lamp beads. cooling effect.

For the convenience of installation, especially for the actual needs of retrofitting existing street lamps, the heat pipe radiator and the LED lamp bead are connected together through a transition piece heat conducting column.

The heat pipe heat transfer element provided in the heat pipe radiator 4 has a heat conduction speed 30,000 times that of metal silver, so that the heat exported by it is extremely close to the heat generated, which can maintain dynamic balance, eliminate heat accumulation, and realize dynamic and rapid cooling. Purpose.

Claims (5)

1. the ultra-high power LED street lamp of a heat pipe heat radiation, comprise that lamp stand, described lamp stand comprise cross bar and upper support bar, the LED lamp holder is arranged on the cross bar, is provided with the lamp pearl in the LED lamp holder, and described lamp pearl links to each other with heat-pipe radiator, it is characterized in that, described heat-pipe radiator lower end connects the lamp pearl in the LED lamp holder, and the middle part is connected on the upper support bar, and the upper end is a cantilever design, heat-pipe radiator with respect to the horizontal plane is tilting state, and the surface of heat pipe is with radiating fin.

2. the ultra-high power LED street lamp of a kind of heat pipe heat radiation according to claim 1 is characterized in that, the axis of described heat-pipe radiator straightway and the setting angle between the horizontal line are 5 °～45 °.

3. the ultra-high power LED street lamp of a kind of heat pipe heat radiation according to claim 1 is characterized in that, links together by the transition piece heating column between described heat-pipe radiator and the LED lamp pearl.

4. according to the ultra-high power LED street lamp of claim 1 or 3 described a kind of heat pipe heat radiations, it is characterized in that, described LED lamp pearl comprises the heat sink plate that is connected with heat-pipe radiator, described heat sink plate links to each other with fixed flat planar, transparent light distributing cap is connected the below of fixed flat planar, the periphery of described fixed flat planar is provided with the air inlet and the air outlet of wind-cooling heat dissipating in the light distributing cap, and described air inlet place is provided with a miniature hair-dryer.

5. the ultra-high power LED street lamp of a kind of heat pipe heat radiation according to claim 1 is characterized in that, described radiator is the adopting heat pipes for heat transfer element.

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