CN201803222U

CN201803222U - High-power LED street lamp with high-uniformity luminance

Info

Publication number: CN201803222U
Application number: CN2009202613917U
Authority: CN
Inventors: 庄杰富
Original assignee: Hengdian Group Zhejiang Tospo Public Lighting Co Ltd
Current assignee: Hengdian Group Zhejiang Tospo Public Lighting Co Ltd
Priority date: 2009-12-11
Filing date: 2009-12-11
Publication date: 2011-04-20
Anticipated expiration: 2019-12-11

Abstract

A high-power LED street lamp with high-uniformity luminance comprises a plurality of LED light bar modules fixed on the luminous intensity distribution bracket in a lamp housing, and each LED light bar module comprises a PCB (printed circuit board) circuit and LED point light sources distributed on a heat dissipation baseplate in a matrix way. The high-power LED street lamp with high luminance uniformity is characterized in that the spacing among the LED light bar modules distributed in the middle of the lamp housing is larger than that among the LED light bar modules distributed on the periphery of the lamp housing; optical splitters with different focal lengths are arranged on the LED point light sources in different regions, and the luminous intensity is uniformly diminished from the LED light bar modules in the middle to the LED light bar modules on the periphery. Under the condition of not immolating the luminous flux, the light is distributed uniformly through a simple quadratic optical approach or tri-optical approach, so that the illumination power density is reduced without immolating the illuminating brightness, the dazzling light is controlled better to achieve the best illuminating effect, and the lamp has simple structure and low cost.

Description

The luminous high-power LED street lamp of a kind of high uniformity

[technical field]

The utility model relates to high-power LED (Light Emitting Diode) road illuminating equipment, relates in particular to the comprehensive alternative traditional sodium vapor lamp of a kind of energy, effectively improves the LED street lamp of the illumination uniformity of street lamp.

[background technology]

The energy that whole world illumination is consumed occupies 1/4 of total amount consumed, and the development potentiality in this field of throwing light on is big, technology substitution, progressive swift and violent, and the led light source illumination is the direction that attracts most attention in lighting field at present, also can become maximum trend place.As everyone knows, the led light source flat light emission is every LEDs chip, and the light that single LEDs sends becomes the light beam shape, and its brightness and range of exposures all are limited, and power density is too high, so all be led array to be arranged on the heat-radiating substrate constitute the led light source light fixture and finish illumination in practice.So just caused a very big defective of LED light fixture place, LED street lamp uniformity of luminance is bad, and the light that single light source of some is synthetic exists that light and shade is staggered, too overlapping, the problem of insufficient strength or light blind area; The aerial propagation loss of led light source is quite big in addition, unlike the traditional sodium light fixture powerful penetration power is arranged, Here it is has caused led light source from can not fundamentally replacing traditional sodium vapor lamp, become the key technology obstacle place of the leading force in the street lighting, wherein control lamp power density and be only energy-conservation key.

Fields such as industry special lighting, stadiums illumination, stage illumination, lighting, photo illumination for light have relatively high expectations, light sensitive degree height, all require the good evenness of light, power density is low, dazzle control is good, these have all proposed high test to led light source equipment, also some traditional way is to adopt the sacrificial light flux, carrying out simple secondary or three optics gimmicks reaches to use up and needs and requirement, increase the cost that light fixture is made in meeting like this, influence the promotion and application of product; Apply to the lighting apparatus of street lamp in addition, put under the density requirements should expiring suspension height and lamp stand, improve effective optical range again, and illumination intensity and brightness reach the emergency lighting prescribed level.

[summary of the invention]

The utility model provides a kind of according to the led light source characteristic, by secondary optics, three optical instruments for addressing the above problem, can be under the situation that does not improve power density, brightness also unaffected and can reach effective facula area that extends, improve bright mole according to uniformity, save the luminous high-power LED street lamp of high uniformity of the energy.

The technical scheme that the utility model addresses the above problem is: the luminous high-power LED street lamp of a kind of high uniformity, comprise that but several spacings LED lamp bar module, each LED lamp bar module of being fixed on the interior luminous intensity distribution support of lamp outer casing all are that the LED spot light on heat-radiating substrate constitutes by PCB circuit and matrix distribution, it is characterized in that, be distributed in spacing between the LED lamp bar module of mid portion in the lamp outer casing greater than the spacing of the LED lamp bar module that is distributed in the lamp outer casing inner rim; Establish the optical splitter of different focal on the LED of zones of different spot light, luminous light intensity angle is from LED lamp bar module evenly the successively decreasing to periphery of centre part.

For the LED lamp bar module of the mid portion in the described lamp outer casing, its luminous light intensity angle is controlled at 150 °-170 ° scope, and for the LED lamp bar module of described lamp outer casing inner rim, its luminous light intensity angle is controlled at 70 °-90 ° scope.

Described luminous intensity distribution support is to regulate size and big or small structure between the LED module; The cross sectional shape of described luminous intensity distribution support presents enlarging U type, and promptly there is the sidepiece of the inclination of extending out both sides; Planar base and angled sides at the luminous intensity distribution support have have all installed and fixed some LED lamp bar modules.

Described LED lamp bar module is installed on the luminous intensity distribution support, and by installing hole fixed L ED lamp bar module, the density of installing hole is that the concrete power density according to the lamp applications occasion requires to calculate.

Above described LED lamp bar module, corresponding LED spot light light emission direction is provided with optical splitter, and the periphery of LED spot light is provided with reflective mirror.

The utility model is according to the differing heights that road width, street lamp are provided with, and optical splitter, luminous intensity distribution support are adjusted and be provided with to the parameters of calculating the LED lamp pairing angle position of bar module and needing according to the rules to reach;

According to LED difference encapsulation specification and optical splitters, the geometry of decision and change light intensity angle and hot spot combines change light spot shape and luminous intensity distribution by reflective mirror with optical splitter, improve the light fixture light extraction efficiency.

The beneficial effects of the utility model are: under the situation of sacrificial light flux not, with simple secondary or three optics gimmicks, obtain good uniformity, optical power density is low, dazzle control is good illuminating effect, fitting structure is simple, and cost is lower; Apply to road lamp system, can improve effective hot spot scope and illumination intensity and brightness and also can reach the emergency lighting prescribed level.

[description of drawings]

Fig. 1 is the utility model one example structure schematic diagram;

Fig. 2 is that the utility model LED lamp bar module is arranged schematic diagram;

Fig. 3 (a) is the structural representation of lamp outer casing mid portion LED spot light;

Fig. 3 (b) is the structural representation of the LED spot light of lamp outer casing periphery;

Fig. 4 is the mounting structure schematic diagram of the utility model a single point light source;

Fig. 5 is a light intensity angle normal schematic diagram between two street lamps of the utility model one embodiment;

Fig. 6 is the concrete divergence of beam figure of the utility model one embodiment.

Among the figure: 1, luminous intensity distribution support; 2, LED lamp bar module; 3, substrate; 4, LED spot light; 5, reflective mirror; 6, convex lens; 7, optical splitter.

[specific embodiment]

In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.

With reference to the accompanying drawings, the utility model comprises and is fixed in the lamp outer casing that several LED lamp bar modules 2, each module of 1 all are that the LED spot light 4 on heat-radiating substrate 3 constitutes by PCB circuit and matrix distribution on the luminous intensity distribution support.

With reference to the accompanying drawings 1, described luminous intensity distribution support 1 is the structure of adjustable dimension and size; As seen the cross sectional shape of the luminous intensity distribution support 1 in the lamp outer casing presents enlarging U type, and promptly there is the sidepiece of the inclination of extending out both sides.Planar base and angled sides at lamp outer casing have have all installed and fixed some LED lamp bar modules 2.According to different road surface situations and light area requirements, can design the slope of the outer enlarging of different luminous intensity distribution supports 1, realize the case designing requirement.

With reference to the accompanying drawings 2, be distributed in spacing between the LED lamp bar module 2 of mid portion in the lamp outer casing greater than the spacing of the LED lamp bar module 2 that is distributed in the lamp outer casing inner rim; Can very clearly find out according to Fig. 2, LED lamp bar module 2 arranges it is thin and peripheral close in the centre, in the utility model, the layout of LED spot light 4 is to calculate according to the lighting power density of national regulation, in the utility model, reduce lighting power density, strengthen illumination uniformity and satisfy the illumination intensity needs.

Just have different convex lens 6 itself for led light source, so itself have an intrinsic different luminous light intensity angle, we need do is exactly as the case may be needs, cooperates different optical splitters to regulate the luminous light intensity angle of LED.

On the LED of zones of different spot light 4, establish the optical splitter 7 of different focal, the optical splitter 7 of different focal can allow LED spot light 4 that different luminous light intensity angles is arranged, LED spot light 4 for mid portion in the lamp outer casing, adopt the structure shown in Fig. 3 (a), its luminous light intensity angle is controlled at 150 °-170 ° scope, LED spot light 4 for the lamp outer casing inner rim, adopt structure as shown in Fig. 3 (b), the LED spot light 4 luminous light intensity angles of lamp outer casing outermost are controlled at 70 °-90 ° scope, and luminous light intensity angle is from LED spot light 4 evenly the successively decreasing to periphery of centre part.

Referring to accompanying drawing 4, above described LED lamp bar module 2, corresponding LED spot light 4 light emission directions are provided with optical splitter 7, and the periphery of LED spot light is provided with reflective mirror 5, distribute in conjunction with changing light spot shape and luminous intensity by optical splitter 7 and reflective mirror 5, improve the light fixture light extraction efficiency.

The utility model is according to the differing heights that road width, street lamp are provided with, and optical splitter, luminous intensity distribution support are adjusted and be provided with to the parameters of calculating the pairing angle position of light source module and needing according to the rules to reach;

According to LED difference encapsulation specification and optical splitters, the geometry of decision and change light intensity angle and hot spot combines change light spot shape and luminous intensity distribution by reflector with optical splitter, improve the light fixture light extraction efficiency.

When the utility model designed in the concrete pavement behavior of reply, the process that should have was as follows:

When making the street lamp of white light great power LED 150W,

1, select LED power, determine the number of LED,

Scheme Choice can adopt the LED of 120 1W

2, design radiator structure

As the case may be, scheme is the design of heat radiation module hollow out

3, according to the road parameters requirement, corresponding LED light intensity horn cupping line and white light, design white light high-power LED light source matrix distribution, concrete form as shown in Figure 2, it is sparse to present a kind of centre, the distribution characteristics that periphery is fine and close

4, use up needs according to road, design three times the optic reflector luminous intensity distribution

Spot size requirement according to road, luminous intensity, light area coverage etc., the reflector of design different parameters, the optical splitter of different focal can allow the LED spot light that different luminous light intensity angles is arranged, can regulate the luminous overlay area size of LED lamp bar module like this, present Fig. 5 and Fig. 6 shown in form.

Claims

1. luminous high-power LED street lamp of high uniformity, comprise that several LED lamp bar modules, each LED lamp bar module of being fixed on the interior luminous intensity distribution support of lamp outer casing all are that the LED spot light on heat-radiating substrate constitutes by PCB circuit and matrix distribution, it is characterized in that, be distributed in spacing between the LED lamp bar module of mid portion in the lamp outer casing greater than the spacing of the LED lamp bar module that is distributed in the lamp outer casing inner rim; Establish the optical splitter of different focal on the LED of zones of different spot light, luminous light intensity angle is from LED lamp bar module evenly the successively decreasing to periphery of centre part.

2. according to the luminous high-power LED street lamp of the described high uniformity of claim 1, it is characterized in that, LED lamp bar module for the mid portion in the described lamp outer casing, its luminous light intensity angle is 150 °-170 °, for the LED lamp bar module of described lamp outer casing inner rim, its luminous light intensity angle is 70 °-90 °.

3. according to the luminous high-power LED street lamp of the described high uniformity of claim 1, it is characterized in that described luminous intensity distribution support is to regulate size and big or small structure between the LED module; The cross sectional shape of described luminous intensity distribution support presents enlarging U type, and promptly there is the sidepiece of the inclination of extending out both sides; Planar base and angled sides at the luminous intensity distribution support have have all installed and fixed some LED lamp bar modules.

4. according to claim 1 or the luminous high-power LED street lamp of 3 described high uniformity, it is characterized in that described LED lamp bar module is installed on the described luminous intensity distribution support, by installing hole fixed L ED lamp bar module.

5. according to the luminous high-power LED street lamp of the described high uniformity of claim 1, it is characterized in that above described LED lamp bar module, corresponding LED spot light light emission direction is provided with optical splitter, the periphery of LED spot light is provided with reflective mirror.