CN201983047U

CN201983047U - High-power LED (light-emitting diode) illuminator radiating heat through tubular fin heat radiator

Info

Publication number: CN201983047U
Application number: CN2011200487781U
Authority: CN
Inventors: 叶利苗
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-28
Filing date: 2011-02-28
Publication date: 2011-09-21
Anticipated expiration: 2021-02-28

Abstract

The utility model relates to a high-power LED (light-emitting diode) illuminator radiating heat through a tubular fin heat radiator. Heat radiating fins are mounted in an outer cover housing; upper end plates and lower end plates are respectively fixed at the upper ends and the lower ends of the heat radiating fins; the heat radiating fins penetrate through a U-shaped tube; a heat radiating fan is mounted on an air flue component and assembled on the surfaces of the heat radiating fins; the lower end of the U-shaped tube is connected with an elbow and a heat absorbing box through a Y-shaped tee pipe fitting; and an LED lamp crystal substrate is connected with the heat absorbing box. By using the high-power LED illuminator radiating heat through the tubular fin heat radiator, the quick conduction of heat at a hot end of the LED lamp crystal substrate is enhanced; the heat is conducted to the surfaces of the heat radiating fins; and the convection intensity of the heat radiating fins and air is enhanced by an air flue when the heat radiating fan works. The convection speed of the heat radiating fins and the air is enhanced by the heat radiating fan, and the heat radiating area can be expanded by the U-shaped tube and the heat radiating fins. Therefore, the heat radiating intensity at the hot end of the LED lamp crystal substrate is improved more obviously; the light attenuation problem of a high-power LED is solved; the conversion between the light energy and the heat energy of the high-power LED is improved; and the service life of the high-power LED is prolonged.

Description

The high-power LED illuminator of cooled by finned tubular radiator

Technical field

The utility model relates to the LED lighting apparatus, is specifically related to a kind of high-power LED illuminator of cooled by finned tubular radiator.Belong to International Classification of Patents F21 technical field.

Background technology

Because LED lamp illumination work when operation, direct current by LED lamp wafer produce junction temperature Tj (℃), the big more then light decay of junction temperature is serious more, causes influencing the LED luminescent properties, the life-span.Press LED heat radiation formula:

Tj(℃)＝Ric×VF×IF+Tc

RBA(℃/W)＝(Tc-Ta)÷(VF×IF)

RJA＝RJC+RBA

As shown from the above formula, improve the LED lamp life-span, reduce light decay, remove the electric current and voltage of selecting coupling, lower the RJA coefficient relatively, outside the RBA coefficient, main is to promote heat radiation conduction pattern and the speed of improving Tc, hot-side temperature is comparatively fast reduced, reduce temperature and hoard, could improve luminous benefit and stability.At present, the LED lighting generally adopts the aluminium section heat radiation on the market, heat dispersion difference and consumptive material, and volume weighs greatly, only is fit to be applied on many group low-power LEDs.As everyone knows, as use ratio on great power LED, the application on the low-power LED is more energy-conservation, and light efficiency is higher, low cost of manufacture, and application surface is more extensive.And this type of heat abstractor of relative heat radiation material of aluminium alloy preferably of the heat dispersion of major company's development abroad and domestic employing heat pipe heat radiation has all been considered the function of quick conduction emphatically, and has ignored structure, shape and and the cross-ventilated speed of radiating surface.Really make radiating effect reach better factor, one must rely on quick conduction, and it two must improve and enlarge radiating surface and cross-ventilation speed is finished.

Summary of the invention

The purpose of this utility model is to provide a kind of volume little, in light weight, the pipe wing radiator high-power LED illuminator of the high efficiency heat exchange heat radiation that cost is low.

The purpose of this utility model is achieved through the following technical solutions.

A kind of high-power LED illuminator of cooled by finned tubular radiator, comprise outer casing, be installed on the constant-current supply of outer casing inwall, and cooling fan, air channel and radiating fin, the radiating fin of being with circular hole is housed in the outer casing, the upper/lower terminal of radiating fin is fixed with upper head plate and bottom plate respectively; Radiating fin is on the U-shaped pipe, and cooling fan is installed on the assembly in air channel and is assemblied in the surface of radiating fin; The lower end of U-shaped pipe by breeches pipe spare bridge piece, be communicated to endothermic box, the brilliant substrate of LED lamp is connected with endothermic box.

Endothermic box is the square vessel of hollow out in the flat chamber; The vacuum feed tube is arranged on the endothermic box.

The radiating fin surface has bridge sheet slotted eye window, and evenly distributes.Cooling fan is two balls or brushless bearing blower fan.

The utility model has been strengthened the heat in the brilliant substrate of LED lamp hot junction is conducted fast, reaches to the radiating fin surface; Radiating fin and cross-ventilated intensity when cooling fan work has been strengthened in the air channel.Cooling fan has strengthened the convection velocity with air, U-shaped pipe and radiating fin can be expanded area of dissipation, thereby have more obviously improved the hot-side heat dissipation intensity of the brilliant substrate of LED lamp, have solved great power LED light decay problem, improve great power LED luminous energy and heat energy conversion, prolonged its service life.

Description of drawings

Fig. 1 is a sectional structure schematic diagram of the present utility model;

Fig. 2 is the profile schematic diagram of a kind of embodiment of the utility model.

Among the figure: 1, cooling fan, 2, the air channel, 3, the brilliant substrate of LED lamp, 4, radiating fin, 5, the U-shaped pipe, 6, bend pipe, 7, breeches pipe spare, 8, endothermic box, 9, upper head plate, 10, bottom plate, 11, the vacuum feed tube, 12, constant-current supply, 13, outer casing.

The specific embodiment

Referring to Fig. 1, the high-power LED illuminator of cooled by finned tubular radiator, constant-current supply 12 is housed in outer casing 13, and the radiating fin 4 of cooling fan 1, the air channel 2 that is connected with blower fan and circular hole, radiating fin 4 upper/lower terminals are fixed with upper head plate 9 and bottom plate 10 respectively, radiating fin 4 is on U-shaped pipe 5, and cooling fan 1 is installed on the assembly in air channel 2 and is assemblied in the surface of radiating fin 4; U-shaped pipe 5 lower ends by breeches pipe spare 7 bridge pieces 6, be communicated to endothermic box 8, the brilliant substrate 3 of LED lamp is connected with endothermic box 8.This endothermic box 8 is the square vessel of hollow out in the flat chamber; Vacuum feed tube 11 is arranged on the endothermic box 8.Have bridge sheet slotted eye window on radiating fin 4 surfaces, and evenly distribute.Cooling fan adopts two balls or brushless bearing blower fan.

Cooling fan 1 is connected with air-duct apparatus, to realize ventilation to radiating fin 4, constant-current supply 12 and the brilliant substrate 3 of LED lamp, cooling fan 1 conducting, U-shaped pipe 5 is through radiating fin 4, upper head plate 9, bottom plate 10, and combine closely, be connected with breeches pipe spare 7, bend pipe 6, endothermic box 8 again, and vacuum feed tube 11 is installed, again with the outer casing 13 integral reinforcings assembling that has dirt filtrating screen.

When the luminous work of LED lamp, the brilliant substrate 3 end face temperature of LED lamp conduct to endothermic box 8 with heat, and the working material that is heated in endothermic box 8 chambeies (having quick conductibility) is through bend pipe 6, breeches pipe spare 7, U-shaped pipe 5, and temperature is axis and rises.In uphill process, heat is conducted to the fin slotted eye window of the good radiating fin of heat conductivility 4 upper surfaces, the small part heat is dissipated by the natural air convection current, and very most of heat detaches heat radiation by the ventilation of cooling fan 1, takes heat to space environment.Realized quick powerful heat radiation to the brilliant substrate 3 hot junction faces of LED lamp, thus the light efficiency and the service life of having improved the LED lamp.

When experiment showed, the LED lamp work that is applied to single group 550W, the substrate observed temperature is 39 ℃, and the upper end temperature of radiating fin 4 is 37 °, has promoted the intensity of illumination of LED lamp, efficiently solves light decay, has prolonged its service life.

The frame mode of Fig. 1 is suitable for Projecting Lamp, light-irradiating lamp, Tunnel Lamp, the illumination of street lamp etc.Fig. 2 is an another kind of embodiment of the present utility model, is fit to be applied to Lawn lamp, Landscape Lamp, wall lamp, stage lighting, the illumination of pendent lamp etc.

Claims

1. the high-power LED illuminator of a cooled by finned tubular radiator, comprise outer casing (13), be installed on the constant-current supply (12) of outer casing (13) inwall, and cooling fan (1), air channel (2) and radiating fin (4), it is characterized in that: be the radiating fin (4) that circular hole is housed in outer casing (13), on the radiating fin (4), following two ends are fixed with upper head plate (9) and bottom plate (10) respectively, radiating fin (4) is on U-shaped pipe (5), cooling fan (1) is installed on the assembly of air channel (2) and is assemblied in the surface of radiating fin (4), the lower end of U-shaped pipe (5) is by breeches pipe spare (7) bridge piece (6), be communicated to endothermic box (8), the brilliant substrate of LED lamp (3) is connected with endothermic box (8).

2. the high-power LED illuminator of cooled by finned tubular radiator according to claim 1 is characterized in that: described endothermic box (8) is the square vessel of hollow out in the flat chamber.

3. the high-power LED illuminator of cooled by finned tubular radiator according to claim 1 is characterized in that: have bridge sheet slotted eye window on the surface of radiating fin (4), and evenly distribute.

4. the high-power LED illuminator of cooled by finned tubular radiator according to claim 1 is characterized in that: described cooling fan (1) is two balls or brushless bearing blower fan.

5. the high-power LED illuminator of cooled by finned tubular radiator according to claim 1 is characterized in that: vacuum feed tube (11) is arranged on the described endothermic box (8).