CN201391837Y

CN201391837Y - LED street lamp

Info

Publication number: CN201391837Y
Application number: CN200920052436U
Authority: CN
Inventors: 邢瑞林; 汤丹
Original assignee: GUANGZHOU HAILIN ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: GUANGZHOU HAILIN ELECTRONIC TECHNOLOGY Co Ltd
Priority date: 2009-03-12
Filing date: 2009-03-12
Publication date: 2010-01-27
Anticipated expiration: 2019-03-12

Abstract

The utility model discloses an LED street lamp which is mainly applied on urban roads. The LED street lamp comprises an aluminum base plate and an LED chip which is encapsulated on the aluminum base plate. The LED chip which is directly encapsulated on the aluminum base plate can obtain quick and high-efficiency heat radiation, so as to make sure the LED chip has good heat radiating effect and avoid quick light degradation of the LED street lamp, thereby prolonging the service life of the LED street lamp. The LED street lamp can further comprise a lamp cover which is arranged at the aluminum base plate in a detachable manner, the lamp cover is provided with lampshades correspondingly to each LED light source, the lampshades are lenses with the scattering function, and each lampshade has different curvature. Therefore, part of light can generate refraction according to certain rule, and the light which is emitted by each luminous point can all be uniformly distributed, so as to form a light array, thereby leading the street lamp to emit uniform light in an entire manner.

Description

A kind of LED street lamp

Technical field

The utility model relates to a kind of street lamp, relates in particular to a kind of Novel LED street lamp that is mainly used in urban road.

Background technology

At present, the street lamp overwhelming majority that the city public lighting area particularly uses on major trunk roads is a high-pressure mercury lamp, and high-pressure mercury lamp can provide 1001m/W above luminous efficiency.But the shortcoming of itself also clearly, and the spectral component of light source is yellow partially, and colour rendering index is extremely low; It is bad to go out uniformity of light; The life-span of light fixture is short, and it is big to change workload; The energy consumption of common high-pressure mercury lamp is higher than led light source far away under the identical light extraction efficiency; Under equiluminous, the brightness of common sodium vapor lamp has only 40% of LED street lamp; Accordingly, in order to reach same brightness, the illumination of sodium vapor lamp needs 2.5 times of LED street lamp.

For this reason, the LED street lamp of efficient energy-saving arises at the historic moment, and it has long service life and has good advantages such as light-emitting uniformity.But led light source the most important thing is heat dissipation problem, the LED street lamp that uses is with led light source and the independent encapsulation of chip and thermal component is set separately around chip at present, and then be assembled on the substrate, therefore it is insufficient timely to cause easily dispelling the heat, be easy to cause LED street lamp light decay serious, influence normal use and influence economize on electricity, also burnt out led light source easily.

Summary of the invention

At the deficiencies in the prior art, the technical problems to be solved in the utility model provides a kind of radiating efficiency height, the life-span is long, illumination uniformity is good LED street lamp.

In order to solve the problems of the technologies described above, the technical scheme that the utility model adopted is: a kind of LED street lamp comprises aluminium base, is packaged in the led chip on this aluminium base.

As the improvement of such scheme, be provided with insulating barrier between described aluminium base and the led chip.

As the improvement of such scheme, this LED street lamp comprises at least two led light sources that are distributed in described aluminium base.

As the improvement of such scheme, have reflector around the described led light source, the opening direction of described reflector is distributing along being fan-shaped on the cross section of aluminium base length direction.

As the improvement of such scheme, described aluminium base is a rectangular aluminum sheet.

As the improvement of such scheme, described LED street lamp also comprises the light cover that is removably installed in described aluminium base, and this light cover is provided with lampshade in the correspondence of each led light source, and this lampshade is the optical lens with scattering function.

As the improvement of such scheme, the line of the thinnest point of described lens and led light source is being the fan-shaped distribution along the projection on the cross section of aluminium base length direction.

The beneficial effects of the utility model are: LED street lamp of the present utility model directly is packaged in led chip the aluminium base with good heat radiating function, make led chip obtain rapidly and efficiently heat radiation, guaranteed the great heat radiation effect of led light source, avoid LED street lamp light decay too fast, thereby guarantee that the LED street lamp has the long life-span, final realization replaces traditional sodium vapor lamp to reach the target of energy-saving and emission-reduction.

Above-mentioned LED street lamp installs lens additional before luminous point, make a part of light produce refraction, and the light that sends of each luminous point can evenly distribute like this, forms an optical arrays, thus make street lamp totally send uniform light.

Description of drawings

Fig. 1 is the generalized section of a kind of LED street lamp of the utility model;

Fig. 2 is the upward view of Fig. 1 for the utility model;

The structural representation of the LED street lamp that Fig. 3 scatters for the opening direction of reflector in the utility model;

Fig. 4 is the structural representation that the utlity model has the LED street lamp of light cover, and this figure has showed the principle of even bright dipping simultaneously;

Fig. 5 is the structural representation of LED street lamp that the utlity model has the lampshade of different light directions.

The specific embodiment

Further specify the specific embodiment of the present utility model below in conjunction with accompanying drawing.

As shown in Figure 1 and Figure 2, a kind of LED street lamp of the utility model comprises aluminium base 10, is packaged in the led chip 18 of this aluminium base.

LED street lamp of the present utility model directly is packaged in led chip 18 on the aluminium base 10 with good heat radiating function, because aluminium base has good thermal conducting function, the heat that chip produces directly can be conducted apace by aluminium base 10 and be distributed, make led chip 18 obtain rapidly and efficiently heat radiation, guaranteed that led chip 18 obtains great heat radiation effect, avoid LED street lamp light decay too fast, even stop light decay, thereby guarantee that the LED street lamp has the long life-span, final realization replaces traditional sodium vapor lamp to reach the target of energy-saving and emission-reduction.

More preferably, be provided with insulating barrier 12 between described aluminium base 10 and the led chip 18.Non-conductive defective chip when making aluminium base 10 performance heat radiation effectiveness.

More preferably, this LED street lamp comprises at least two led light sources that are distributed on the described aluminium base 10, and each led chip 18 is exactly a led light source.Just the led chip with each original led light source correspondence all is packaged on the aluminium base 10 together, thereby is effectively dispelled the heat.A plurality of led chips 18 are packaged in a street lamp, thereby can obtain the enough street lamps of intensity of illumination.

More preferably, form groove around the described led chip 18, this groove is exactly a reflector 16, the opening direction of described reflector 16 is distributing along being fan-shaped on the cross section of aluminium base 10 length directions, as shown in Figure 3, make the spot light of led light source disperse to be radiated on the road, make a lamp can shine the road of certain-length scope.Wherein distribution form can be at all angled with the normal direction of aluminium base 10 angle of opening direction along each reflector 16 of aluminium base 10 length directions, and the angle that forms near the normal direction of the opening direction of the reflector 16 at aluminium base 10 length direction two ends and aluminium base is greater than the angle of the normal direction formation of the opening direction of its inboard reflector 16 and aluminium base 10.

More preferably, described aluminium base 10 is a rectangular aluminum sheet, it is the shape that adapts to the road that is shone for the irradiation area that makes the LED street lamp equally that rectangle or microscler aluminium base are set equally, be microscler, thereby the LED street lamp is shone along the road bearing of trend, avoid that similar circular range of exposures is the same shines the roadside too much, thereby the more efficient use energy reaches energy-conservation effect.

More preferably, with reference to figure 4, described LED street lamp also comprises the light cover 20 that is removably installed in described aluminium base 10, and this light cover 20 is provided with lampshade 22 in the correspondence of each led light source, and this lampshade 22 is the optical lenses with scattering function.Above-mentioned LED street lamp installs lens additional before luminous point, make a part of light produce refraction, and the light that sends of each luminous point can evenly distribute like this, and all light sources of a LED street lamp form an optical arrays, thus make street lamp totally send uniform light.Each lampshade of this LED street lamp can also be done particular design, each lampshade is that optical lens is designed to different curvature according to certain rules, make light source after optical lens comes out, shine the microscler irradiation area of road formation, shine along the road bearing of trend, avoid the waste of illumination, thereby the more efficient use energy reaches energy-conservation effect.

More preferably, described lampshade 22 is a spherical lens.This spherical lens is the optical lens of particular design, in order to cover light source, can be made into the shape of spherical surface hill, and led light source anaclasis just takes place after by these lens, thereby spot light is shone to certain orientation; The scattering process of scioptics can be that the light that comes out of spot light is more even; A plurality of spot lights by the irradiation of identical rule, also just can form an optical arrays in groups, thus make street lamp totally send uniform light.Avoid on the road dark partially phenomenon between two street lamps, cleared away the blind area.

More preferably, with reference to shown in Figure 5, to each lampshade 22 on the light cover 20 is that optical lens is done particular design, make the line of the thinnest point of described optical lens and led light source be the fan-shaped distribution along the projection on the cross section of aluminium base 10 length directions, so just can be so that the LED street lamp has the range of exposures of longer length.That is to say set the led light source scioptics the thinnest for light path be main optical path, along aluminium base 10 length directions, the angle that forms near the normal direction of the main optical path at aluminium base length direction two ends and aluminium base is greater than the angle of the normal direction formation of its inboard main optical path and aluminium base, thereby obtains microscler range of exposures.

Above disclosed only is preferred embodiment of the present utility model, can not limit the interest field of the utility model certainly with this, and therefore the equivalent variations of being done according to the utility model claim still belongs to the scope that the utility model is contained.

Claims

1, a kind of LED street lamp is characterized in that: comprise aluminium base, be packaged in the led chip on this aluminium base.

2, LED street lamp according to claim 1 is characterized in that: be provided with insulating barrier between described aluminium base and the led chip.

3, LED street lamp according to claim 1 is characterized in that: this LED street lamp comprises at least two led light sources that are distributed in described aluminium base.

4, LED street lamp according to claim 3 is characterized in that: have reflector around the described led light source, the opening direction of described reflector is distributing along being fan-shaped on the cross section of aluminium base length direction.

5, LED street lamp according to claim 1 is characterized in that: described aluminium base is a rectangular aluminum sheet.

6, LED street lamp according to claim 1 is characterized in that: also comprise the light cover that is removably installed in described aluminium base, this light cover is provided with lampshade in the correspondence of each led light source, and this lampshade is the optical lens with scattering function.

7, LED street lamp according to claim 6 is characterized in that: the line of the thinnest point of described lens and led light source is being the fan-shaped distribution along the projection on the cross section of aluminium base length direction.