CN203349081U - Stack effect LED street lamp improving thermal convection - Google Patents

Abstract

The utility model proposes a chimney effect LED street lamp with enhanced convection heat dissipation, which includes an LED light source module, a radiator and a street lamp housing; The heat sink between the street lamp housing and the LED light source module, there is a gap between the heat sink that penetrates up and down and communicates with the outside space where the street lamp housing and the LED light source module are located, and the LED light source module is located under the heat sink side. In this way, in the present utility model, the pipeline forms a "chimney" structure, and the LED light source module heats the surrounding air. Using the principle that the hot air has a small density and is easy to float, the hot air around the LED light source module enters the street lamp through the gap of the heat sink. The shell is discharged upwards along the pipe, and new air is added to enhance the fluidity of the air around the LED light source module and the heat sink, and perform smooth and fast natural convection heat dissipation. The heat dissipation effect is good, the cost is low, the structure is simple and reasonable, and it is practical. powerful.

Description

A chimney effect LED street lamp with enhanced convection and heat dissipation

technical field

The utility model relates to the field of LED light emitting devices, in particular to a chimney effect LED street lamp which enhances convection and heat dissipation.

Background technique

With the advancement of science and technology, LED light sources are more and more popular because of their advantages such as high luminous efficiency, low cost, no pollution, and in line with the national theme of energy conservation and environmental protection.

In order to achieve a higher light intensity, the power of the LED light source is getting higher and higher, and the temperature of the LED light source is easy to rise. The impacts are: LED spectrum red shift, light efficiency reduction, stress loss and life shortening, etc., so The heat dissipation problem of LEDs is an obstacle to the popularization of power LED light sources.

Natural convection is recognized as the most reliable passive cooling method. Compared with active cooling methods, it has the advantages of no external energy, no moving parts, no noise, long life and low cost. Ordinary LED heat dissipation mainly relies on the natural convection of the air to dissipate heat, but the effect is not ideal. Usually, a radiator with heat sink is equipped, and the heat dissipation area is increased by increasing the number of heat sinks, which can enhance heat dissipation to a certain extent. Capability, but sometimes there is air flow resistance, poor air flow, unsatisfactory heat dissipation effect, and instability, and high heat dissipation cost.

In view of this, the inventor of this case conducted in-depth research on the above-mentioned problem, and then this case was produced.

Utility model content

The purpose of the utility model is to provide a chimney effect LED street lamp with good heat dissipation effect and low cost which enhances convection heat dissipation.

In order to achieve the above object, the utility model adopts such technical scheme:

A chimney effect LED street lamp that enhances convection heat dissipation, including an LED light source module, a radiator and a street lamp housing; the street lamp housing is provided with a pipe that communicates with the interior of the street lamp housing and has an upward opening, and the radiator has a The heat sink between the street lamp housing and the LED light source module is formed with a gap that penetrates up and down and connects the inside of the street lamp housing with the external space where the LED light source module is located, The LED light source module is arranged on the lower side of the heat sink.

The above-mentioned pipeline is in the shape of a straight cylinder, and is vertically arranged on the upper side of the above-mentioned street lamp housing.

The thickness of the heat sinks is 0.2-2mm, and the distance between the heat sinks is 2-10mm.

The above-mentioned pipeline has a length of 50-1000mm and a diameter of 50-600mm.

After adopting the above technical scheme, the chimney effect LED street lamp with enhanced convection heat dissipation of the utility model breaks through the structural form of the traditional LED street lamp. The principle of low air density and easy floating makes the hot air around the LED light source module enter the street lamp housing through the gap of the heat sink, and then discharges upward along the pipe, and new air is added to strengthen the LED light source module and The fluidity of the air around the heat sink enables smooth and rapid natural convection heat dissipation. Compared with the prior art, the chimney effect LED street lamp with enhanced convection heat dissipation of the utility model has good heat dissipation effect, low cost, simple and reasonable structure, and is practical. Strong.

Description of drawings

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

Fig. 2 is a schematic cross-sectional view of the utility model.

In the picture:

1-LED light source module

2-radiator 21-heat sink

3-Street lamp housing 4-Pipeline

Detailed ways

In order to further explain the technical solution of the present utility model, the specific examples are described in detail below.

A chimney effect LED street lamp with enhanced convection heat dissipation of the present utility model, as shown in FIGS. 1 and 2 , includes an LED light source module 1 , a radiator 2 and a street lamp housing 3 .

The improvement is that the street lamp housing 3 is upwardly provided with a pipe 4 communicating with the interior of the street lamp housing 3 with the mouth facing upwards, and the radiator 2 has a cooling fin 21 formed between the street lamp housing 3 and the LED light source module 1, Between the cooling fins 21 is formed a gap that penetrates up and down and connects the inside of the street lamp housing 3 and the external space where the LED light source module 1 is located. The LED light source module 1 is arranged on the lower side of the cooling fins 21, and the pipe 4 forms a "chimney" structure , the heat generated by the LED light source module 1 heats the surrounding air, and the hot air around the LED light source module 1 enters the street lamp housing 3 through the gap of the heat sink 21 by utilizing the principle that the hot air has a low density and is easy to float. Then it is discharged upwards along the pipeline 4, new air is replenished, and the heat generated by the LED light source module 1 is absorbed again, so as to enhance the fluidity of the air around the LED light source module and the heat sink, and unblock the LED light source module 1. Fast natural convection cooling.

In order to make the air flow more smoothly, preferably, the pipe 4 is in the shape of a straight cylinder, and is vertically arranged on the upper side of the street lamp housing 3 .

Preferably, the thickness of the cooling fins 21 is 0.2-2 mm, and the distance between the cooling fins 21 is 2-10 mm.

Preferably, the pipe 4 has a length of 50-1000mm and a diameter of 50-600mm.

In the chimney effect LED street lamp with enhanced convection heat dissipation of the utility model, the shape, length and diameter of the pipe can also be adjusted and designed according to actual requirements; the shape, thickness, spacing, quantity and distribution of heat sinks can also be adjusted according to actual requirements. Adjustment and design, more broadly speaking, the specific form and setting position of the radiator can also be adjusted and designed according to actual requirements; the form of LED light source module, the number of monomers and the distribution form can be adjusted and designed according to actual requirements Design; the street lamp housing is an existing street lamp housing structure, which can be adapted to the design scheme of the utility model for structural adjustment.

The product form of the present utility model is not limited to the illustrations and examples of this case, and anyone who makes appropriate changes or modifications of similar ideas to it should be considered as not departing from the patent category of the present utility model.

Claims (4)

1. A chimney effect LED street lamp that enhances convection heat dissipation, comprising an LED light source module, a radiator and a street lamp housing; it is characterized in that: the street lamp housing is upwardly provided with a pipeline that communicates with the street lamp housing and the mouth is upward, The heat sink has cooling fins formed between the street lamp housing and the LED light source module, and the heat sink is formed between the upper and lower sides and communicates with the inside of the street lamp housing and the LED light source module. In the gap of the external space, the LED light source module is arranged on the lower side of the heat sink. 2 . A chimney effect LED pendant lamp with enhanced convection and heat dissipation according to claim 1 , wherein the pipe is in a straight cylindrical shape and is vertically arranged on the upper side of the street lamp housing. 3 . 3. A chimney effect LED street lamp with enhanced convection and heat dissipation according to claim 1 or 2, characterized in that: the thickness of the heat sinks is 0.2-2 mm, and the distance between the heat sinks is 2-10 mm. 4. A chimney effect LED street lamp with enhanced convection and heat dissipation according to claim 3, characterized in that: the length of the pipe is 50-1000 mm, and the diameter is 50-600 mm.

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