CN202521427U

CN202521427U - LED (light emitting diode) downlight

Info

Publication number: CN202521427U
Application number: CN2012201476115U
Authority: CN
Inventors: 李治龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-10
Filing date: 2012-04-10
Publication date: 2012-11-07
Anticipated expiration: 2022-04-10

Abstract

The utility model discloses an LED (light emitting diode) downlight. A heat radiator of the LED downlight is provided with a heat radiating plate, a cylindrical heat radiating seat is connected with the lower end surface of the heat radiating plate, two layers of vent holes penetrate through the interior of the heat radiating seat, are uniformly distributed around the central axis of the heat radiating seat and are respectively an inner layer of vent holes and an outer layer of vent holes, the two ends of each vent hole are provided with openings communicated with outside, a plurality of annular ventilation grooves are arranged on the side surface of the heat radiating seat at intervals, and the annular ventilation grooves are communicated with the outer layer of vent holes. The heat radiator automatically forms air flow from the bottom to top in the interior of the heat radiator to accelerate heat exchange by utilizing the characteristic that hot air flows upwards; therefore, the LED downlight has a simple structure without occupying space, effectively protects an LED light source and prolongs the service life of the LED light source.

Description

A kind of LED Projecting Lamp

Technical field

The utility model relates to a kind of LED Projecting Lamp, particularly a kind of LED Projecting Lamp of good heat dissipation effect.

Background technology

Continuous breakthrough along with the LED technology; Especially succeeding in developing of high-power, high-efficiency LED is widely used in various lighting fields with LED and becomes a reality, like the LED Projecting Lamp; Can be used for tunnel illumination, stage illumination, lighting, field construction illumination, advertising lighting, the illumination of outward appearance body of wall, road lighting, Landscape Lighting and storage illumination etc.; Energy-conservation and illuminating effect is all quite desirable, but LED produces bigger heat simultaneously, makes the led light source temperature too high easily; LED is caused damage, and the light efficiency that influences LED has also reduced its service life simultaneously.Existing LED Projecting Lamp operated by rotary motion has radiator, but the volume of most of radiators is big, and radiating effect is poor, the LED Projecting Lamp that has even fan is set in lamp body, but have complex structure, shortcoming such as big, the power consumption of taking up room.

Therefore, how to realize that a kind of LED Projecting Lamp simple in structure, good heat dissipation effect is the technical problem that needs to be resolved hurrily in the industry.

Summary of the invention

The main purpose of the utility model provides a kind of LED Projecting Lamp, is intended to make the simple in structure of LED Projecting Lamp and can quick heat radiating.

The utility model proposes a kind of LED Projecting Lamp; Comprise circuit board, be installed in the some led light sources on the circuit board, the drive circuit that is connected with led light source and power line; The upper surface of circuit board connects a fixing lampshade, and the lower surface connects a fixing radiator, and the radiator upper part is provided with and the close-connected heat sink of circuit board; The heat sink lower surface connects one and is cylindrical radiating seat; Radiating seat inside is penetrated with the two-layer air vent that is evenly distributed around central shaft, and air vent is respectively internal layer air vent and outer air vent, and the air vent two ends all have and the extraneous opening that communicates.

Preferably, on the side of radiating seat, be interval with some loop vent grooves, the loop vent groove is communicated with outer air vent.

Preferably, be penetrated with a centre bore in the central axis of radiator, circuit board is provided with a line hole in the corresponding position of centre bore, and centre bore and line hole can supply lead to pass through.

Preferably, radiator is integrated.

Preferably, radiator is processed by Heat Conduction Material aluminium, copper or iron.

The radiator upper part of the utility model LED Projecting Lamp is provided with and the close-connected heat sink of circuit board; The heat sink lower surface connects one and is cylindrical radiating seat; Radiating seat inside is penetrated with the two-layer air vent that the central shaft around radiating seat is evenly distributed, and air vent is respectively internal layer air vent and outer air vent, and the air vent two ends all have and the extraneous opening that communicates; On the side of radiating seat, be interval with some loop vent grooves, the loop vent groove is communicated with outer air vent.Radiator utilizes characteristics that hot-air upwards flows spontaneously to form from bottom to top air in inside to flow and accelerate rate of heat exchange, does not simple in structurely take up space, and has protected led light source effectively, has prolonged the service life of led light source.

Description of drawings

Fig. 1 is the side view of an embodiment of the utility model LED Projecting Lamp;

Fig. 2 is the vertical view of radiator among the embodiment of the utility model LED Projecting Lamp;

Fig. 3 is the upward view of radiator among the embodiment of the utility model LED Projecting Lamp.

The realization of the utility model purpose, functional characteristics and advantage will combine embodiment, further specify with reference to accompanying drawing. The specific embodiment

Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

Referring to figs. 1 through Fig. 3; One embodiment of the LED Projecting Lamp of the utility model is proposed; Comprise circuit board 200, be installed in the some led light sources on the circuit board 200, the drive circuit that is connected with led light source and power line; Circuit board 200 upper surfaces connect a fixing lampshade 300, and the lower surface connects a radiator 100.Radiator 100 is integrated and directly is fixed on circuit board 200 lower surfaces, and heat transfer efficiency is high.In addition, radiator 100 is processed by heat conductivility good material such as aluminium, copper or iron, further improves heat transfer efficiency.The characteristics that radiator 100 hot-airs capable of using upwards flow spontaneously form from bottom to top air and flow and accelerate rate of heat exchange in inside, and do not need device such as extra interpolation fan.The upper part of radiator 100 is provided with and circuit board 200 close-connected heat sinks 101; Heat sink 101 can express delivery the heat that produces of ground transfer circuit plate 200; Heat sink 101 lower surfaces connect a radiating seat 102, and radiating seat 102 is cylinder, and inside is penetrated with the two-layer air vent that is evenly distributed around radiating seat 102 central shafts; Air vent is divided into internal layer air vent 103 and outer air vent 104 according to the position; The air vent two ends all have opening to communicate with the external world, and when producing draught head in the radiating seat 102, outside air can get in the radiating seat 102 and from open upper end from the lower ending opening of internal layer air vent 103 and outer air vent 104 and discharge.The compartment of terrain is provided with some loop vent grooves 105 on the side of radiating seat 102, and loop vent groove 105 is communicated with outer air vent 104, and outside air can lean on the opening of lower end to get in the outer air vent 104 from loop vent groove 105.When opening the LED Projecting Lamp; The heat that produces is delivered in the radiating seat 102 through heat sink 101 fast; Air in the radiating seat 102 is heated to become high temperature and high pressure gas and flow to open upper end and discharges at last outside the radiating seat 102; Like this, the radiating seat 102 inner draught heads that form, what make the external world gets into radiating seat 102 inside than cold air from replenishing by lower ending opening of internal layer air vent 103, outer air vent 104 and loop vent groove 105; Form high temperature and high pressure gas gradually and make progress mobile than cold air; High temperature and high pressure gas part in the outer air vent 104 is discharged from loop vent groove 105, and another part continues upwards to flow to discharge from open upper end, and the high temperature and high pressure gas in the internal layer air vent 103 is then discharged from open upper end.Such structure, the characteristics of utilizing hot-air upwards to flow flow at the radiating seat 102 inner air that form from bottom to top, have accelerated the rate of heat exchange of radiating seat 102 with outside air, thereby have reached better heat radiating effect, have improved radiating efficiency.

The central axis of radiator 100 is penetrated with a centre bore 106, and circuit board is provided with a line hole 201 in centre bore 106 corresponding positions, and centre bore 106 and line hole 201 can supply lead to pass through.In addition, the lower ending opening of centre bore 106 communicates with outside air, and the heat of generation also can carry out heat exchange through centre bore 106 and outside air.

The radiator 100 of the utility model utilizes characteristics that hot-air upwards flows spontaneously to form from bottom to top air in inside to flow and accelerate rate of heat exchange; Simple in structurely do not take up space; And do not need devices such as extra interpolation fan just to reach better heat radiating effect; Led light source can be worked in a suitable environment temperature for a long time, protected led light source effectively, prolonged the service life of led light source.

The above is merely the preferred embodiment of the utility model; Be not thus the restriction the utility model claim; Every equivalent structure transformation that utilizes the utility model specification and accompanying drawing content to be done; 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 utility model.

Claims

1. LED Projecting Lamp; Comprise circuit board, be installed in the some led light sources on the said circuit board, drive circuit and the power line that is connected with said led light source, the upper surface of said circuit board connects a fixing lampshade, and the lower surface connects a fixing radiator; It is characterized in that; Said radiator upper part is provided with and the close-connected heat sink of said circuit board, and said heat sink lower surface connects one and is cylindrical radiating seat, and said radiating seat inside is penetrated with the two-layer air vent that is evenly distributed around central shaft; Said air vent is respectively internal layer air vent and outer air vent, and said air vent two ends all have and the extraneous opening that communicates.

2. LED Projecting Lamp according to claim 1 is characterized in that, is interval with some loop vent grooves on the side of said radiating seat, and said loop vent groove is communicated with said outer air vent.

3. LED Projecting Lamp according to claim 1 and 2 is characterized in that the central axis of said radiator is penetrated with a centre bore, and said circuit board is provided with a line hole in the corresponding position of said centre bore, and said centre bore and said line hole can supply lead to pass through.

4. LED Projecting Lamp according to claim 3 is characterized in that said radiator is integrated.

5. LED Projecting Lamp according to claim 4 is characterized in that said radiator is processed by Heat Conduction Material aluminium, copper or iron.