CN202216082U

CN202216082U - Light-emitting diode (LED) road lamp

Info

Publication number: CN202216082U
Application number: CN201120280600XU
Authority: CN
Inventors: 李应彪; 张平
Original assignee: SHAOWU XINGRONG TECHNOLOGY PHOTOELECTRIC MANUFACTURING Co Ltd
Current assignee: SHAOWU XINGRONG TECHNOLOGY PHOTOELECTRIC MANUFACTURING Co Ltd
Priority date: 2011-08-03
Filing date: 2011-08-03
Publication date: 2012-05-09
Anticipated expiration: 2021-08-03

Abstract

The utility model relates to a light-emitting diode (LED) road lamp, which comprises a lamp body and a lamp support. The lamp body comprises a casing, an LED light source assembly arranged in a cavity of the casing and including an LED circuit board, an LED particle and a focusing lens wrapping the LED particle and a transparent protection cover. A plurality of cones are protruded outside the casing, and the outer surface of the casing is coated with a nanometer anti-radiation coating. The LED circuit board is in contact with the inner surface of the casing and is coated with heat conductive cream, and the heat conductive cream is coated between the LED particle and the LED circuit board. The transparent protection cover forms a sealed cavity with the casing, and a mixture of fluorescent powder and colloids is coated on the inner surface of the transparent protection cover. The LED light source of the LED lamp is small in light decay. Materials with high conductive coefficient are adopted, and the fact that radiation is inhibited due to low radiation coefficient of a certain layer is avoided so that radiation is facilitated. The LED particle and the fluorescent powder are separated so as to resolve the problem of radiation of an LED driver.

Description

The LED street lamp

Technical field

The utility model relates to lighting field, is a kind of LED streetlamp with favorable radiating effect specifically.

Background technology

At present, LED is known by increasing people as new light sources, and LED has long, advantage such as light efficiency is high, radiationless, solid light source of life-span, is widely applied to fields such as floor light, outdoor lighting.Along with development of science and technology and progress, the LED street lamp replaces the conventional road lamp that energy consumption is big, the life-span is short gradually.In general, street lamp is positioned at outdoor, receives factor affecting such as dust, environment temperature, makes heat radiation become the key factor that influences the LED street lamp life-span.The bad LED street lamp that causes that dispels the heat quickens light decay, and is very big to LED street lamp effect on service life, can not reach 100,000 hours in the theory.What present white light LEDs street lamp generally used is white light LEDs, but owing to white light LEDs generally can be packaged together led chip and fluorescent material, so the caloric value of led chip and fluorescent material all compares higher; Both be unfavorable for heat radiation; The prior effect that influenced makes light efficiency low, and heat radiation is difficult.And when this LED is applied to lighting field, have problems such as light efficiency is low, cost increases, heat radiation difficulty.As everyone knows, the circulation way of heat mainly contains three kinds of conduction, radiation, convection current, and existing LED street lamp, its radiating mode is mainly heat loss through radiation; Mainly there is following defective in it: owing to adopt heat loss through radiation, radiating efficiency is not good, and heat dissipating layer is many more, and layer is low with the material thermal conductivity of layer; The heat that all causes led light source to produce can not effectively shed, and is longer when service time, and dust is overstock on the lamp surface easily; The heat loss through radiation effect just weakens greatly, and the junction temperature of lamp is sharply risen, and the life-span falls sharply.

Summary of the invention

In order to overcome the deficiency of above-mentioned prior art, the utility model technical problem to be solved provides a kind of LED streetlamp with favorable radiating effect.

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 lamp body and lamp bracket, and said lamp body comprises:

Housing, its outside protrusion is provided with a plurality of bullets, and its outer surface is coated with the nano-antiradiation coating;

The led light source assembly; It is placed in the inner chamber of housing; Comprise the condenser lens of led circuit plate, LED particle and coating LED particle, said led circuit plate contacts with the inner surface of housing and is coated with heat-conducting cream, is coated with heat-conducting cream between said LED particle and the led circuit plate;

Transparent protective cover, itself and shell combination form airtight cavity, and its internal layer is coated with the mixture of fluorescent material and colloid.

In order further to optimize the utility model, be provided with sealing ring between said transparent protective cover and the housing, on it respectively correspondence be provided with through hole, connect double-screw bolt and through through hole transparent protective cover, sealing ring and housing be fixed together successively.

In order further to optimize the utility model, said bullet is ranks and distributes, and is identical with the spacing between the bullet of delegation or same row.

In order further to optimize the utility model, the longitudinal cross-section of said bullet is shaped as isosceles trapezoid or crest shape.

In order further to optimize the utility model, the thickness of said nano-antiradiation coating is 5～10 microns.

In order further to optimize the utility model, the refraction angle of said condenser lens is 140～160 degree.

In order further to optimize the utility model, said led circuit plate and heat-conducting cream adopt a type brill material with carbon element to process.

In order further to optimize the utility model, said LED particle is an indium gallium chip, and the material of said transparent protective cover is the PMMA resin, and said fluorescent material is yttrium aluminium garnet fluorescent powder, and said colloid is an epoxy resin.

The LED street lamp of the utility model adopts unique bullet radiator structure, and in use the light decay of led light source is very little to make the LED street lamp; In the heat radiation route of transmission, use all be the high material of thermal conductivity factor, can not make heat radiation be obstructed because of certain layer of material thermal conductivity factor is low, help heat radiation; Adopt separating of LED particle and fluorescent material simultaneously, solved the heat dissipation problem that LED drives, and alleviated some blue-light excited absorption problems, have higher light-emitting efficiency.Owing to the scattering properties of fluorescent material itself, the white light of its generation is more even, soft, is more suitable for the high street lamp of optical uniformity simultaneously.

Description of drawings

Shown in Figure 1 is the internal structure sketch map of the utility model LED street lamp.

Shown in Figure 2 is the structural representation of the housing of the utility model LED street lamp.

Label declaration:

1, housing 2, bullet 3, nano-antiradiation coating 4, led circuit plate

5, LED particle 6, condenser lens 7, transparent protective cover 8, internal layer

The specific embodiment

By specifying technology contents of the present invention, structural feature, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.

With reference to Fig. 1 and shown in Figure 2, a kind of LED street lamp comprises lamp body and lamp bracket, and said lamp body comprises:

Housing 1, its outside protrusion is provided with a plurality of bullets 2, and its outer surface is coated with nano-antiradiation coating 3;

The led light source assembly; It is placed in the inner chamber of housing 1; Comprise the condenser lens 6 of led circuit plate 4, LED particle 5 and coating LED particle 5, said led circuit plate 4 contacts with the inner surface of housing 1 and is coated with heat-conducting cream, is coated with heat-conducting cream between said LED particle 5 and the led circuit plate 4;

Transparent protective cover 7, itself and housing 1 are combined to form airtight cavity, and its internal layer 8 is coated with the mixture of fluorescent material and colloid.

Why the utility model LED street lamp can improve radiating effect, and its principle is:

1, the heat that sends of LED particle 5 can conduct to led circuit plate 4 through heat-conducting cream, and led circuit plate 4 contacts with the inner surface of housing 1, between also be coated with heat-conducting cream, further heat is conducted to housing 1.Because the high heat conduction of heat-conducting cream, fast heat-conducting effect, the heat that makes the LED particle sent can shift apace, thereby reaches better heat radiating effect;

2, the bullet 2 of the lateral surface setting of housing 1 has increased the area of dissipation of housing 1, has accelerated cross-ventilation simultaneously, makes heat accumulation behind housing 1, can be dispersed into fast in the external environment, reaches better heat radiating effect; In addition, because the existence of bullet 2 makes birds on housing 1, not perch, reduced the problem that causes housing 1 well not dispel the heat because of the accumulation of birds ight soil;

3, the nano-antiradiation coating 3 of the outer surface of housing 1 coating has the ability of opposing External Heat Flux; Make when the LED street lamp uses in the high temperature area; The LED street lamp too is heated; Thereby improved the adaptive capacity to environment of LED street lamp, played better heat radiating effect indirectly;

4, LED particle and fluorescent material are separated, solved the heat dissipation problem that LED drives, and alleviated some blue-light excited absorption problems, have higher light-emitting efficiency; Owing to the scattering properties of fluorescent material itself, the white light of its generation is more even, soft, is more suitable for the high street lamp of optical uniformity simultaneously.

In addition, the LED particle 5 of the LED street lamp of the utility model is coated with condenser lens 6, has improved the lighting angle of LED street lamp, and illumination light is more concentrated, and hot spot is more even, has promoted LED street lighting effect greatly.

Among another embodiment of the utility model, be provided with sealing ring between said transparent protective cover 7 and the housing 1, on it respectively correspondence be provided with through hole, connect double-screw bolt and through through hole transparent protective cover 7, sealing ring and housing 1 be fixed together successively.This embodiment has effectively improved the barrier propterty of LED street lamp, makes inner led light source assembly can not receive invasion such as rainwater, dust and influences performance and service life.

Among another embodiment of the utility model, with reference to shown in Figure 2, said bullet 2 is ranks and distributes, and is identical with the spacing between the bullet 2 of delegation or same row.This embodiment makes that through improving the distribution situation of bullet 2 radiating effect of housing 1 is more even, has improved cross-ventilation simultaneously, makes that the radiating effect of housing 1 is better.

Among another embodiment of the utility model, with reference to shown in Figure 2, the longitudinal cross-section of said bullet 2 is shaped as isosceles trapezoid or crest shape.

Among another embodiment of the utility model, with reference to shown in Figure 1, the thickness of said nano-antiradiation coating 3 is 5～10 microns.Under this thickness, said nano-antiradiation coating 3 can effectively completely cut off extraneous heat radiation, can not reduce the radiating effect of housing 1 again, has reached optimized design from the integral heat sink effect.

Among another embodiment of the utility model, the refraction angle of said condenser lens 6 is 140～160 degree.Find that after deliberation when the refraction angle of condenser lens 6 is 160 when spending, the illuminating effect of LED street lamp is best, can not produce phenomenons such as hot spot, dazzle or dark space.

Among another embodiment of the utility model, said led circuit plate 4 adopts a type brill material with carbon element to process with heat-conducting cream.Led circuit plate 4 adopts a type brill material with carbon element, and its thermal conductivity factor is high, can not hinder heat and distribute outward through radiation direction; Heat-conducting cream adopts and type to bore a material with carbon element, the existing head and shoulders above silicon materials heat-conducting cream of its thermal conductivity factor, thus improved the radiating effect of LED street lamp.

Among another embodiment of the utility model, said LED particle 5 is an indium gallium chip, and the material of said transparent protective cover 7 is the PMMA resin, and said fluorescent material is yttrium aluminium garnet fluorescent powder, and said colloid is an epoxy resin.

The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes description of the present invention to do; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.

Claims

1. a LED street lamp comprises lamp body and lamp bracket, it is characterized in that, said lamp body comprises:

2. LED street lamp according to claim 1; It is characterized in that: be provided with sealing ring between said transparent protective cover and the housing; On it respectively correspondence be provided with through hole, connect double-screw bolt and through through hole transparent protective cover, sealing ring and housing be fixed together successively.

3. LED street lamp according to claim 1 is characterized in that: said bullet is ranks and distributes, and is identical with the spacing between the bullet of delegation or same row.

4. LED street lamp according to claim 1 is characterized in that: the longitudinal cross-section of said bullet is shaped as isosceles trapezoid or crest shape.

5. LED street lamp according to claim 1 is characterized in that: the thickness of said nano-antiradiation coating is 5～10 microns.

6. LED street lamp according to claim 1 is characterized in that: the refraction angle of said condenser lens is 140～160 degree.

7. LED street lamp according to claim 1 is characterized in that: said led circuit plate and heat-conducting cream adopt a type brill material with carbon element to process.

8. LED street lamp according to claim 1 is characterized in that: said LED particle is an indium gallium chip, and the material of said transparent protective cover is the PMMA resin, and said fluorescent material is yttrium aluminium garnet fluorescent powder, and said colloid is an epoxy resin.