CN201866590U

CN201866590U - LED (light emitting diode) lamp

Info

Publication number: CN201866590U
Application number: CN2010206366409U
Authority: CN
Inventors: 吕晓峰; 李军
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-01
Filing date: 2010-12-01
Publication date: 2011-06-15
Anticipated expiration: 2020-12-01

Abstract

The utility model relates to an LED lamp comprising an integrated radiator, LED light bars, an air vent, a sealing gasket and light transmission lampshades, wherein the integrated radiator among the LED light bars is provided with the air vent for ventilation; each LED light bar is sealed in the respective light transmission lampshade; the light transmission lampshades are mutually independent; the radiating fins at the back of the integrated radiator are on the plane that forms a certain inclination angle with the plane of the LED light bars; and the angle can ensure that the plane of the radiating fins are basically vertical to the ground when the lamp is installed according to actual use position. The LED lamp is characterized by large lamp power, low working temperature, long service life and the like, and can be widely applied to city roads, road tunnels and various light projection and flood lighting fields.

Description

A kind of LED light fixture

Technical field

The utility model relates to a kind of LED light fixture, and it can enough utilize thermal current rising principle (stack effect) that the heat on the light fixture is taken away preferably.

Background technology

LED, a kind of solid state light emitter of novel concept with its impayable energy-saving and environmental protection, long-life, controllability high-technology advantage, becomes in recent years one of new and high technology of the tool development prospect in the whole world.Along with high-power LED lamp is applied to lighting field more and more, the power of LED light fixture is also increasing, can replace existing high-pressure mercury lamp illumination fully.But the increase of power also makes the operating temperature of light fixture increase, and this can make the reliability decrease of LED light fixture, and light decay strengthens, and lamp life is reduction significantly.The fitting structure that present high-power LED lamp generally adopts is that the front is a transparent lamp shade, the cavity for sealing in the cover; Be provided with led light source (striation) in the cavity; The integrated radiator in the back side.Its main heat dissipating method is to add aluminum alloy heat sink at the back side of light fixture, to strengthen area of dissipation.This heat dissipating method can play good thermolysis for lower-powered LED light fixture, but for the bigger LED light fixture of power, because the light fixture volume is bigger, although therefore there are a lot of fin at the light fixture back side, the cold air at its light fixture edge also is difficult to flow on the fin of middle part, thereby make the fin of middle part, the light fixture back side not have thermolysis or radiating effect extreme difference, all the more so when not having cross-ventilation.The light fixture that also has is installed in each lamp bar in the individual heat sinks, forms modular or module type, and the angle of each module is also rotatable, so that luminous intensity distribution needs.Though this mode can solve the light fixture heat dissipation problem preferably, its occupation space is relatively large, and lamp power is made big needs and taken bigger space.

The utility model content

In order to overcome existing high-power LED lamp in the deficiency aspect the heat radiation, the utility model provides a kind of high-power LED lamp that utilizes the hot-air rising principle to form the cross-ventilation heat radiation.This light fixture can solve the heat dissipation problem of light fixture preferably.

To achieve these goals, the technical scheme that the utility model adopted is: have the hole that is used to ventilate on the integral heat radiator between the LED lamp bar.When light fixture shone downwards, these air vents can make the cold air of light fixture below enter in the air vent, carried out flowing out from the light fixture top after the heat exchange with the light fixture fin again.It makes light fixture just as chimney, and light fixture below cold air is sucked, and flows out from the light fixture top again.Can contact with flow air fully in order to ensure fin, the utility model is equipped with an air vent between per two LED lamp bars, and this hole can be bar shaped or other shapes.Each LED lamp bar in the described LED light fixture all is sealed in separately the transparent lamp shade, and each transparent lamp shade is separate.Higher Luminaire efficiency can be arranged when allowing light fixture be used for road or tunnel illumination, some angles often can tilt between the plane, light source place of light fixture and the ground level; And plane, fin place is vertical with plane, light source place usually, so also just there is an inclination angle in plane, fin place with ground level.The existence at this inclination angle has reduced the radiating effect of integral heat radiator.LED light fixture described in the utility model, promptly be with the certain angle that tilts between plane, fin place and LED lamp bar or the plane, light source place, its angular dimension can guarantee that its plane, fin place is vertical substantially with ground when light fixture is installed by actual use location, thereby makes fin can play thermolysis better.

The beneficial effects of the utility model are to make that the operating temperature of high-power LED lamp is lower, thereby have reduced the light decay of light fixture greatly, have prolonged the service life of light fixture and have improved the reliability of light fixture work.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the front view of the utility model structure.

Fig. 3 is used for the installation direction schematic diagram of road and tunnel illumination for the utility model.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described further.Fig. 1, the 2nd, a kind of LED light fixture composition comprises integral heat radiator (1), LED lamp bar (2), air vent (3), sealing gasket (4) and transparent lamp shade (5), has some the holes that are used to ventilate on the integral heat radiator between the LED lamp bar.When light fixture shone downwards, these air vents can make the cold air of light fixture below enter in the air vent, carried out flowing out from the light fixture top after the heat exchange with the light fixture fin again.It makes light fixture just as chimney, and light fixture below cold air is sucked, and flows out from the light fixture top again.Can contact with flow air fully in order to ensure fin, the utility model is equipped with an air vent between per two LED lamp bars, and this hole can be bar shaped or other shapes.When LED lamp bar quantity increases, the also corresponding increase of the quantity of air vent.Each LED lamp bar in the LED light fixture all is sealed in separately the transparent lamp shade, and each transparent lamp shade is separate.This structure is laid a good foundation for open air vent between transparent lamp shade.Composition surface between transparent lamp shade and the integral heat radiator is equipped with sealing gasket (4), to play the dustproof and waterproof effect.Fin (6) on the integral heat radiator (1) and LED lamp bar (2) plane, place inclination certain angle.

In embodiment illustrated in fig. 3, higher Luminaire efficiency can be arranged when allowing light fixture be used for road or tunnel illumination, some angles often can tilt between the plane, light source place of light fixture and the ground level; And plane, fin place is vertical with plane, light source place usually, so also just there is an inclination angle in plane, fin place with ground level.The existence at this inclination angle has reduced the radiating effect of changing radiator.A kind of LED light fixture of the present utility model, promptly be with the certain angle that tilts between fin (6) plane, place and LED lamp bar (2) or the plane, light source place, its angular dimension can guarantee that its fin (6) plane, place is vertical substantially with ground when light fixture is installed by actual use location, thereby makes fin (6) can play thermolysis better.

Claims

1. LED light fixture, comprise integral heat radiator (1), LED lamp bar (2), air vent (3), sealing gasket (4) and transparent lamp shade (5), it is characterized in that: on the integral heat radiator (1) between the described LED lamp bar (2), have the air vent (3) that is used to ventilate.

2. LED light fixture according to claim 1 is characterized in that: each LED lamp bar (2) is sealed in separately the transparent lamp shade (5), and each transparent lamp shade (5) is separate.

3. LED light fixture according to claim 1, it is characterized in that: the certain angle that tilts between fin (6) plane, place at integral heat radiator (1) back side and LED lamp bar (2) plane, place, its angular dimension can guarantee that its fin (6) plane, place is vertical substantially with ground when light fixture is installed by actual use location.