CN203757480U - LED (Light Emitting Diode) light bar - Google Patents

Abstract

The utility model discloses an LED (Light Emitting Diode) light bar. The LED light bar comprises an elongated aluminum alloy extrusion radiator, an LED light source, a driving power supply, etc.; a plurality of rows of radiating fins, which are lengthways arranged on the top surface of the aluminum alloy extrusion radiator with a cuboid-shaped body, are respectively lowered down as a trapezoid from the center to two sides by height; a plurality of radiating holes communicated with the bottom surface are formed in concave bottom parts between the radiating fins in each row; a plurality of air ports are transversely formed in all radiating fins by a cutting manner; the LED light source is mounted in a concave groove in the bottom surface of the aluminum alloy extrusion radiator. The LED light bar can be mounted on a ceiling and the heat produced by LED can be transmitted to the trapezoidal radiating fins to be directly radiated to an external space, rather than accumulating in the light bar to influence the LED, and thereby, the phenomena of thermal damage and lumens depreciation of the LED can be reduced.

Description

LED lamp bar

Technical field

The utility model relates to a kind of illumination with the LED light fixture of elongate in shape.

Background technology

LED lamp bar has advantages of that super energy-saving and environmental protection, light source life are long, is widely used in the illumination of market, office, meeting room and family room etc.Although LED is the highest electric light source of luminous efficiency up to the present, but in the time sending luminous energy, there is very large a part of electric energy to be converted to heat energy, need to carry out radiating treatment with radiator, just can avoid cause thermal damage and the light decay of LED, therefore heat abstractor is most important to the working life of LED.In heat dissipation metal device, what cost performance was the highest is aluminium alloy extruded section bar, and its cost is minimum and heat-conductive characteristic is best.For reaching lower cost and good radiating effect, existing LED lamp bar is all to adopt to have the aluminum alloy strip profiled bar that extrusion molding feature can only longitudinal arrangement fin and make radiator, shortcoming is that the dispel the heat longitudinal fin of end face of ledge often will withstand on ceiling when mounted, middle a few row's fin can not contact with space outerpace realizes hot-air conduction circulation, greatly affect radiating effect, but and adopt the stacked fin radiating effect in two sides poor.

Summary of the invention

The bad problem of heat radiation conduction trafficability performance that has fin and space outerpace in order to solve existing LED lamp bar, the utility model will provide a kind of good heat dissipation effect, the LED lamp bar that cost is low.

The technical solution adopted in the utility model is: a radiator made of aluminum alloy section that main body is cuboid, the multiple row fin height of its end face longitudinal arrangement is respectively trapezoidal reduction by central authorities to both sides, middle two row fin height are identical, and between leave the blanking bar of more than one centimetre width, form symmetrical both sides fin, concave bottom portion between the each row fin of every side opens multiple louvres that communicate with radiator made of aluminum alloy section bottom surface, both sides fin is cut multiple tracks blow vent by laterally opening, there is a longitudinal fluting centre of radiator made of aluminum alloy section bottom surface, rectangular aluminum-based circuit board and LED chip are installed therein.

Because the radiator end face fin of LED lamp bar is trapezoidal reduction, every row fin all directly contacts with space outerpace, louvre and horizontal communication mouth can make heat and the surrounding air on fin form conduction circulation up and down, in the middle of radiator end face, fin is not set and keeps blanking bar, heat is not concentrated in inside and causes savings, and the heat that LED produces is transmitted on fin and can distributes to the conduction of lamp body surrounding space in time.Meanwhile, lamp bar radiator is to adopt the aluminum alloy materials of extrusion molding slightly to make as secondary operations, and cost low heat emission performance but improves greatly, has extended the service life of LED.

Brief description of the drawings

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is the cross section view of the parts such as radiator made of aluminum alloy section and light source of LED lamp bar in embodiment.

Fig. 2 is the top view of LED lamp bar after by longitudinal breviary interlude, and Fig. 3 is its upward view.

Fig. 4 is the lateral plan of LED lamp bar.

Detailed description of the invention

Cross section radiator made of aluminum alloy section 1 as shown in Figure 1, its main part is square, on it, each side erect three row fin 11, and be trapezoidal shape by high step-down laterally from central authorities, between middle two row fin 11 across two centimetres of left and right blanking bars 16; Concave bottom portion 12 between the each fin 11 of every side adopts secondary operations to get out the circular louvre 13 of totally four row; Be equipped with a row groove 14 in radiator made of aluminum alloy section 1 bottom surface interposition, an aluminum-based circuit board 2 is installed in bottom surface, mounts LED chip 3 above, and then whole piece groove 14 is filled and covered layer of transparent silica gel 4 as lampshade.Overlook looking up design sketch and can seeing of design sketch and Fig. 3 by Fig. 2 again, the fin 11 of radiator made of aluminum alloy section 1 both sides is cut multiple tracks horizontal communication mouth 15, the circular louvre 13 of each two row of every side communicates radiator made of aluminum alloy section 1 top and bottom, has formed hot-air convection heat dissipation channel up and down; The installing hole 5 at two ends is for the fixed installation between LED lamp bar and ceiling; Driving power 6 is contained in radiator made of aluminum alloy section 1 wherein on the middle blanking bar 16 of one end end face, if driving power 6 also can be arranged on one end of radiator 1 when blanking bar 16 is too narrow.The side-looking effect of the present embodiment LED lamp bar as shown in Figure 4.Such LED lamp bar is compared with existing, the heat of LED is transmitted to both sides fin and directly distributes to space outerpace, louvre 13 and horizontal communication mouth 15 can circulate by supplemental heat, and middle blanking bar 16 does not arrange fin can not pile up heat, thereby greatly improves the heat dispersion of LED.

Claims (1)

1. a LED lamp bar, by aluminum alloy strip profiled bar radiator, aluminum-based circuit board, the formation such as LED chip and driving power, it is characterized in that: the end face of the radiator made of aluminum alloy section that is cuboid in main body (1), multiple row fin (11) height of longitudinal arrangement is respectively trapezoidal reduction by central authorities to both sides, middle two row's fin (11) are highly identical, and between leave the blanking bar (16) of more than one centimetre width, form symmetrical both sides fin (11), concave bottom portion (12) between the each row fin of every side (11) opens multiple louvres (13) that communicate with radiator made of aluminum alloy section (1) bottom surface, both sides fin (11) is cut multiple tracks blow vent (15) by laterally opening, there is a longitudinal fluting (14) centre of radiator made of aluminum alloy section (1) bottom surface, rectangular aluminum-based circuit board (2) and LED chip (3) are installed therein.