CN201688270U

CN201688270U - Modularized LED street lamp utilizing airflow for natural radiation

Info

Publication number: CN201688270U
Application number: CN201020215034XU
Authority: CN
Inventors: 刘木清; 江程; 张万路
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-06-03
Filing date: 2010-06-03
Publication date: 2010-12-29
Anticipated expiration: 2020-06-03

Abstract

The utility model belongs to the field of semiconductor illumination and relates to a modularized LED street lamp utilizing airflow for natural radiation. The modularized LED street lamp consists of a lamp housing, a lamp holder, LED modules and anchor ears, wherein the lamp housing is connected with the lamp holder through a connecting piece; the LED modules are placed on the lamp holder; a certain gap is arranged between adjacent LED modules; the anchor ears are arranged at two ends of a middle LED module and fixed on the lamp holder; and two sides of the lamp housing are provided with ventilation holes or ventilation gaps. The modularized LED street lamp adopts high power white light LED as a light source of a street lamp and the LED modules that are specialized for street lamps and can output rectangular light spots and satisfy the street lamp protection grade requirement IP65, so that the street lamp can achieve the requirement of road illumination and meanwhile the design and installation difficulty of street lamps is reduced. By combining the gap reserved between the LED modules and a hole cut in an outer shell, the air flow can form a radiating channel to greatly improve the efficiency of radiation and ensure that the LED works in the proper temperature range.

Description

A kind of Modular LED street lamp that utilizes airflow for natural heat radiation

Technical field

The utility model belongs to field of semiconductor illumination, relates to a kind of LED of using as light source, particularly a kind of Modular LED street lamp that utilizes airflow for natural heat radiation.

Background technology

Along with the continuous progress of LED manufacturing technology, its light efficiency improves constantly, and by the end of at present, the light efficiency of laboratory large power white light LED has surpassed 190lm/W, and the light efficiency of matured product has also reached 100lm/W on the market.This light efficiency value has represented the potentiality of LED in the road lighting field.

Compare with conventional light source, LED has the advantage of a lot of uniquenesses again, and is little such as luminous point, be easy to carry out optical design, and street lamp efficient can do very highly, therefore compares with conventional light source to have huge energy-saving potential.In addition, the LED life-span is long, and shock resistance is good, the colour rendering index height, and these characteristics all make LED in road lighting is used advantageous advantage be arranged.

Yet also there are now some LED street lamps to occur on the market, but do not have fully to understand the characteristic of LED and the environment for use of street lamp during the design of these street lamps, aspect heat dissipation design, have very big problem.The LED street lamp that existing market occurs is that monoblock type is incorporate mostly, and all led light sources all are sealed in the cavity of sealing.Fin by the street lamp back during street lamp work dispels the heat, but in order to improve radiating efficiency, fin generally directly exposes in air, this just makes airborne greasy dirt and dust be easy to pile up on fin, influence the radiating efficiency of street lamp, thereby influenced service behaviour and the life-span of LED.Adopt simultaneously mode such as fluid sealant that the sealing of elements such as LED is formed one and be difficult to the integral body dismantled owing to the requirement of degree of protection, i.e. integral LED street lamp, on-site maintenance is very difficult like this.

The utility model content

The purpose of this utility model is to provide a kind of Modular LED street lamp that utilizes airflow for natural heat radiation in conjunction with thermodynamic principles.

The Modular LED street lamp that utilizes airflow for natural heat radiation that the utility model proposes is made up of lamp housing 1, lamp bracket 2, LED module 3 and anchor ear 4, and wherein: lamp housing 1 one sides connect lamp bracket 2 one sides by connector, and lamp housing 1 can be that axle is opened or closure with the connector; Be placed with LED module 3 on the lamp bracket 2, the quantity of LED module 3 is looked the illumination requirement on road surface and is changed, and 3 of adjacent LED modules are provided with certain clearance 6, are convenient to passing through of air-flow; LED module 3 two ends in the middle of being positioned at are provided with anchor ear 4, and anchor ear 4 is fixed on the lamp bracket 2, has passage or airspace 5 on the lamp housing 1, and the number of passage or airspace 5 is decided on the size of lamp housing 1.

In the utility model, described LED module 3 adopts can form rectangular light spot or approximate rectangular hot spot, have the good heat radiating characteristic and satisfy the LED module of road lighting street lamp degree of protection (IP65).

In the utility model, lamp bracket 2 and lamp housing 1 are connected by connector, form one.Lamp bracket 2 can be two parts with lamp housing 1 split, also can be parts that unite two into one, if guarantee air-flow can be from the gap of LED module 3 by and flow out light fixture.

In the utility model, have passage or airspace 5 on the lamp housing 1,, form gas channel, so that light fixture has good heat dissipation characteristics so that the air-flow that rises from LED module 3 gaps can pass through lamp housing 1.

The utility model is according to the characteristics of the strict control device temperature of LED need of work, and in conjunction with driveway overdraught motion characteristics and road lighting street lamp some common points for attention in use, creationary employing modularization and the method that combines of utilizing the heat radiation of air-flow peripheral passage, a LED street lamp of designing, this street lamp is compared with traditional LED street lamp, has the following advantages:

Variations in temperature forms uprush when 1, making full use of street lamp work, improves radiating efficiency.

The LED street lamp produces a large amount of heats in use, and heat is by on the heat sink surface of taking lamp housing to, particularly radiator.Radiator temperature will be than higher like this, and its ambient air also can be heated, and density reduces, and forms the fire balloon effect.Owing to low-density rises, the cold air of low-temperature space replenishes at the radiator ambient air.Because air has disturbance, do not form certain heat dissipation channel under the normality, the efficient of heat radiation is not high.The utility model adopts Modular LED light source module, makes between the module LED people for leaving a fixed gap, and shell auger hole or fluting outside, makes whole street lamp form certain air flow passage in use.Rise on the hole of low-density hot-air by shell of the shell of street lamp, take away heat.Because the air-flow draw, i.e. pressure difference, and then, the cold air of relatively high pressure pierces the space between the module of street lamp bottom surface, carries out heat exchange with LED radiator in the lamp housing, rises from the hole of lamp housing then and takes away heat.Go round and begin again, form a stable heat dissipation channel.Thereby reach the cooling LED module, improve the purpose of LED road lamp cooling efficient.The utility model just is being based on this point, when fixed L ED module, stays certain clearance between two LED modules, and dig certain hole or groove in the place of lamp housing correspondence, make air-flow to pass through between lamp housing, take away the heat on the LED module, thereby improve the radiating efficiency of LED street lamp.

2, the utility model has adopted the LED module that can form rectangular light spot, has improved maintainability with respect to traditional integral LED street lamp, can on-the-spotly change, and the supporting technology upgrading.Because the needs of IP grade protection, the integral LED street lamp all is enclosed in led light source in the cavity of sealing, if led light source damages, can only change whole street lamp, send the maintenance of former factory back to, and integral LED street lamp weight be heavier at present, change relatively difficulty, maintenance cost is very high.In addition, when technical development, can realize technology upgrading by the simple module of changing.The LED module that the utility model adopts, in light weight, volume is little, can on-the-spotly change if damage, and safeguards very conveniently, and supporting technology is upgraded.

3, adopt the LED module to form rectangular light spot and to have the IP65 degree of protection, when the design street lamp, just do not need to consider the requirement aspect the degree of protection, thereby can between module, leave gap and perforate of street lamp shell or groove, form aforesaid gas channel.The number that the utility model can be adjusted module flexibly according to the width and the illumination requirement on road surface.By between module, staying a fixed gap, make that forming gas channel becomes possibility.Simultaneously, our degree of protection of the module that adopts has reached the IP65 that the road lighting street lamp requires.

4, by top shell, the LED module had defencive function, on the one hand; make the sun can not direct projection to the LED module, reduced the temperature of module, on the other hand; make the fin of module can not lower radiating efficiency, reduced the street lamp maintenance difficulties simultaneously because of the accumulation of dust greasy dirt.Space on the shell makes air-flow to pass through again, thereby has improved the radiating efficiency of street lamp.

Simultaneously, the utility model has improved radiating efficiency again owing to adopt modularized design, makes the quality of street lamp obviously to alleviate, and makes the street lamp good looking appearance, and is easy for installation.

The utility model has following characteristics:

1, street lamp adopts the LED module that forms rectangular light spot to do light source

2, realize the luminous intensity distribution and the degree of protection of street lamp by the LED module, reduced the difficulty of street lamp design and installation, simultaneously the number that can adjust the LED module flexibly according to the width and the illumination requirement on road surface.

3, adopt the street lamp street lamp of the LED module that forms rectangular light spot, maintain easily, can on-the-spotly change, the supporting technology upgrading.

4, be covered with shell on the LED module, make to be not easy to adhere to greasy dirt and dust stratification between the fin of module, avoided therefore reducing the radiating efficiency of module, also avoided direct irradiation of sunlight to module, cause the aging of module device, increased the artistry of street lamp outward appearance simultaneously.

5, leave the space between the LED module, also leave the space in the relevant position of lampshade simultaneously, make the air-flow circulation canal form, take away the heat on the module, improve cooling effectiveness, reduce LED module operating temperature

6, the hole of lamp housing and LED module or space help whole street lamp to take away spot by rainwater.

Description of drawings

Fig. 1 is a structural diagrams of the present utility model.

Fig. 2 is a upward view of the present utility model.

Number in the figure: 1 is lamp housing, and 2 is lamp bracket, and 3 is the LED module, and 4 is anchor ear, and 5 is passage or the airspace on the lamp housing, and 6 is the gap on the lamp bracket.

The specific embodiment

Further specify the utility model in conjunction with the accompanying drawings below by embodiment.

Embodiment 1: as Fig. 1-shown in Figure 2, LED module 3 is fixed on the lamp bracket 2 by suitable spacing, makes between the adjacent LED module 3 and leave gap 6; With the two ends of the LED module 3 of anchor ear 4 centerlocks, and anchor ear 4 by bolting on lamp bracket 2; Lamp housing 1 one sides are fixed on lamp bracket 2 one sides by connector.Lamp housing 1 both sides have passage or airspace 5.

Manufacturing process of the present utility model is as follows: this street lamp adopts the light source of large power white light LED as street lamp, earlier a plurality of LED modules 3 is fixed on the lamp bracket 2, loads onto anchor ear 4 with bolt then on lamp bracket, again street lamp shell 1 is covered on the lamp bracket periphery.

Claims

1. Modular LED street lamp that utilizes airflow for natural heat radiation, form by lamp housing (1), lamp bracket (2), LED module (3) and anchor ear (4), it is characterized in that lamp housing (1) one side connects lamp bracket (2) one sides by connector, and lamp housing (1) can be that axle is opened or closure with the connector; Be placed with LED module (3) on the lamp bracket (2), be provided with certain clearance (6) between adjacent LED module (3), LED module (3) two ends in the middle of being positioned at are provided with anchor ear (4), and anchor ear (4) is fixed on the lamp bracket (2), has passage or airspace (5) on the lamp housing (1).

2. the Modular LED street lamp that utilizes airflow for natural heat radiation according to claim 1 is characterized in that described LED module (3) adopts the LED module can form rectangular light spot or approximate rectangular hot spot and to satisfy road lighting street lamp degree of protection IP65.

3. the Modular LED street lamp that utilizes airflow for natural heat radiation according to claim 1 is characterized in that lamp bracket (2) is connected by connector with lamp housing (1), forms one.