CN201885084U - A kind of LED street light - Google Patents

Abstract

The utility model discloses a LED street lamp, which comprises a shell, a lampshade, a radiating fin, an LED light source and a circuit board, wherein the radiating fin, the LED light source and the circuit board are arranged in the shell; a fan for accelerating heat dissipation is further arranged in the shell and connected with the power supply, the fan is arranged above the heat dissipation fins, and a cavity in the shell is arranged in front of the fan; the shell is provided with heat dissipation holes, the heat dissipation holes are aligned with the fan, and a cover sheet is arranged above the heat dissipation holes; the upper end of the outer cover sheet is fixed on the shell, the lower end of the outer cover sheet is suspended, and a gap is reserved between the outer cover sheet and the shell; the utility model discloses an adopt the initiative heat dissipation mechanism that constitutes by fan and fan base of installation in the shell to set up the louvre on the shell, circular telegram street lamp during operation, the fan works thereupon together, can distribute away the heat on the fin rapidly, guarantees street lamp work and ensures its long-time normal work under lower temperature, is favorable to prolonging the life of street lamp.

Description

A kind of LED street light

technical field

The utility model relates to the technical field of lighting fixtures, in particular to an LED street lamp with good heat dissipation effect.

Background technique

The development of global lighting product technology is mainly based on the purpose of "energy saving and environmental protection". In recent years, green lighting has become a popular fashion in advanced countries. Therefore, the adoption of high-efficiency lighting facilities is actively encouraged to achieve energy saving effects. The proportion of lighting electricity consumption in major industrial countries in the world is between 15% and 25%, which has become the second only to air-conditioning in electricity consumption. Effectively improving the energy efficiency of electrical equipment and saving electricity has become a global topic of common concern. Street lamps account for a large proportion of lighting electricity consumption. From the perspective of energy saving, LED street lamps are receiving more and more attention. They have the advantages of high luminous efficiency, energy saving, environmental protection, and long life, so they are actively advocated for use. However, as we all know, LED street lamps also have the disadvantage of high heat generation and easy burnout. At present, the structure of the LED street lamp is to combine the upper and lower shells to form the lamp body. The light source and the driver are installed between the upper and lower shells. In order to dissipate heat for the LED street lamp, a radiator needs to be installed near the driver. The metal material is made into a finned structure, which is a passive heat dissipation method. However, in actual use, it is found that this passive heat dissipation method is far from meeting the heat dissipation requirements, and accidents often occur that the driver is burned out due to high heat generation, which reduces the life of the LED street lamp; The energy-saving effect is greatly reduced, and its energy consumption is far greater than the ideal state.

Utility model content

The technical problem to be solved by the utility model is to provide an LED street lamp with a simple structure and active heat dissipation for the defects of the prior art.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: an LED street lamp, which is characterized in that it includes a casing, a lampshade, a heat sink, an LED light source and a circuit board, and the heat sink, the LED light source and the circuit board are installed in the casing, The LED light source is installed on the circuit board, and the circuit board is connected to the heat sink. The lower part of the LED light source is covered by the lampshade, and the lampshade is fixed on the shell; the shell is a double-layer aluminum alloy shell, the lampshade is a transparent plastic lampshade or glass lampshade, and the heat sink is made of metal. Heat sink; a fan for accelerating heat dissipation is also provided in the shell, the fan is connected to the power supply, the fan is installed above the heat sink, and the front of the fan is a cavity in the shell.

Further, the fan is fixed on the fan base, the fan base is installed on the heat sink, the fan base covers the fins of the heat sink inside, and the fan base covers the heat sink to facilitate the fan to suck out heat.

Further, the housing is provided with heat dissipation holes, the heat dissipation holes are aligned with the fan, and a cover sheet is arranged above the heat dissipation holes; the upper end of the cover sheet is fixed on the casing, the lower end is suspended, and there is a gap between the cover sheet and the casing, so that on the one hand The heat drawn by the fan can be dissipated quickly from the gap, and on the other hand, the outer cover sheet can block the rainwater from the outside, so that it will not enter the inside of the shell.

Further, the cover sheet is made of metal material or plastic material.

The utility model installs an active heat dissipation mechanism composed of a fan and a fan base in the casing, and sets a heat dissipation hole on the casing. When the circuit lamp is connected to work, the fan will work together to quickly dissipate the heat on the heat sink, ensuring The street lamp works at a relatively low temperature to ensure its normal operation for a long time, which is beneficial to prolong the service life of the street lamp.

Description of drawings

Fig. 1 is the schematic diagram of the front section structure of the utility model;

Fig. 2 is a schematic diagram of the side section structure of the utility model.

In the figure, 1 is the casing, 2 is the lampshade, 3 is the heat sink, 4 is the LED light source, 5 is the circuit board, 6 is the fan base, 7 is the fan, 8 is the heat dissipation hole, and 9 is the cover sheet.

Detailed ways

In this embodiment, referring to Fig. 1 and Fig. 2, the LED street lamp includes a housing 1, a lampshade 2, a heat sink 3, an LED light source 4 and a circuit board 5, and the heat sink 3, the LED light source 4 and the circuit board 5 are installed in the housing 1, the LED light source 4 is installed on the circuit board 5, the circuit board 5 is connected to the heat sink 3, the lower part of the LED light source 4 is covered by the lampshade 2, and the lampshade 2 is fixed on the shell 1; the shell 1 is a double-layer aluminum alloy shell, and the lampshade 2 It is a transparent plastic lampshade or a glass lampshade, and the heat sink 3 is a metal heat sink; there is also a fan 7 for accelerating heat dissipation in the casing 1, the fan 7 is connected to the power supply, and the fan 7 is installed above the heat sink 3, and the front of the fan 7 is the casing 1 in a cavity.

The fan 7 is fixed on the fan base 6, the fan base 6 is installed on the heat sink 3, the fan base 6 covers the fins of the heat sink 3 inside, and the fan base 6 covers the heat sink 3 to facilitate the fan 7 to suck out the heat .

The housing 1 is provided with cooling holes 8, the cooling holes 8 are aligned with the fan 7, and a cover sheet 9 is arranged above the cooling holes 8; There is a gap, so that on the one hand, the heat sucked by the fan 7 can be dissipated rapidly from the gap, and on the other hand, the outer cover sheet 9 can block the rainwater from the outside, so that it can not enter the shell 1 inside.

The cover sheet 9 is made of metal material or plastic material.

The utility model has been described in detail above. The above description is only a preferred embodiment of the utility model. When it cannot limit the scope of the utility model, all equivalent changes and modifications made according to the scope of the application should be Still belong to the scope covered by the present utility model.

Claims (4)

1. A kind of LED street lamp, it is characterized in that: comprise shell, lampshade, heat sink, LED light source and circuit board, heat sink, LED light source and circuit board are installed in the shell, LED light source is installed on circuit board, circuit board connects heat dissipation The bottom of the LED light source is covered by the lampshade, and the lampshade is fixed on the shell; the shell is a double-layer aluminum alloy shell, the lampshade is a transparent plastic lampshade or glass lampshade, and the heat sink is a metal heat sink; The fan is connected to the power supply, the fan is installed above the heat sink, and the front of the fan is a cavity in the casing. 2. The LED street lamp according to claim 1, wherein the fan is fixed on the fan base, the fan base is installed on the heat sink, and the fan base covers the fins of the heat sink inside. 3. The LED street lamp according to claim 1, characterized in that: the casing is provided with cooling holes, the cooling holes are aligned with the fan, and a cover sheet is arranged above the cooling holes; the upper end of the cover sheet is fixed on the casing, the lower end is suspended, and the outer cover There is a gap between the sheet and the shell. 4. The LED street lamp according to claim 3, characterized in that: the outer cover sheet is made of metal or plastic.

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