CN102966890B

CN102966890B - LED spotlight

Info

Publication number: CN102966890B
Application number: CN201210545612.XA
Authority: CN
Inventors: 刘伟
Original assignee: Shanghai Yaming Lighting Co Ltd
Current assignee: Shanghai Yaming Lighting Co Ltd
Priority date: 2012-12-14
Filing date: 2012-12-14
Publication date: 2015-01-21
Anticipated expiration: 2032-12-14
Also published as: CN102966890A

Abstract

The invention provides an LED spotlight which comprises a radiator, an LED module, a horn-shaped reflection cover, a casing and a power supply, wherein the radiator is surrounded by radiating wings to form a barrel-shaped structure, and is internally provided with a barrel-shaped inner cavity and a horn-shaped inner cavity, which are communicated with each other; the small opening end of the horn-shaped inner cavity is connected with the barrel-shaped inner cavity; the LED module is arranged at the small opening end of the horn-shaped inner cavity; the horn-shaped reflection cover is arranged in the horn-shaped inner cavity and is positioned in front of the LED module; the casing consists of a barrel-shaped upper casing and a barrel-shaped lower casing, wherein the upper casing is sleeved at the upper end of the radiator, and the lower casing is sleeved at the lower end of the radiator; a gap is formed between the upper casing and the lower casing so as to expose out one part of the radiator; a light transmission piece is fixed at the bottom end of the lower casing; and the power supply is fixed on the upper casing, and is electrically connected with the LED module. The LED spotlight provided by the invention mainly adopts a radiating ventilation channel which is formed by an internal structure and an appearance structure, and additionally adopts a cooling fan to assist the heat dissipation; the cooling fan is arranged behind the LED module, and actively conveys cold air to the LED module when working so as to reduce the surrounding temperature of a chip, so that the efficiency of the LED module is improved, and the service life is prolonged.

Description

LED spotlight

Technical field

The present invention relates to a kind of LED, particularly relate to a kind of LED spotlight of good heat dissipation.

Background technology

Increasingly mature along with LED technology, LED is the advantage such as volume is little, power consumption is low, long service life, high brightness because having, be called as the forth generation light source after incandescent lamp, sodium vapor lamp, fluorescent lamp, be applied to various indoor, outdoor display screen, traffic signals, tunnel, mansion, outdoor billboard, park night scene etc. building view and white-light illuminating in.But LED due to single light-emitting area narrow, usual large-scale integrated in the circuit board, forms a larger light emitting source, amount of heat can be caused thus to accumulate, and the rising of temperature can make its luminous efficiency plummet, the problem of therefore LED application product heat radiation becomes increasingly conspicuous.

Chinese patent ZL201210052973 discloses a kind of LED projection lamp, and it comprises tubular heat abstractor, inside has preceding horn-like inner chamber and posterior cylindrical inner chamber; Be arranged at the Lamp cup in horn-like inner chamber; Be positioned at the LED module at the little oral area place of Lamp cup; For the lens of LED module printing opacity; First heat transfer group comprises the first heat pipe of plural U-shaped, and its U-shaped stage casing composition burnishing surface settles LED module, and U-shaped end is between Lamp cup outer wall and horn-like inner chamber wall, and bonded to each other; Fixture, it is placed on cylindrical inner chamber; Second heat transfer group comprises the second heat pipe of plural U-shaped, and its U-shaped stage casing contacts the U-shaped stage casing of the first heat pipe, and its U-shaped end is placed on outside fixture, and fits with tubular inner chamber.

Chinese patent ZL201210163171 discloses a kind of LED spotlight, it comprises the shell being provided with air-vent, the light transmission piece of the loophole being arranged at described housing, the chip being arranged at described enclosure interior and reflector, also comprise the radiator be arranged in described shell, described radiator comprises heat dissipation base portion and heat sink body portion, described chip is fixedly placed in described heat dissipation base portion, and described heat dissipation base portion is provided with and stretches into for wire the wiring hole be connected with described chip.

Those LED spotlight are equipped with heat abstractor, are fallen apart outward by the heat that LED module produces by heat abstractor, but its radiating effect has certain limitation, and structure is comparatively complicated, therefore, need the simple LED spotlight of a kind of good heat dissipation effect, structure.

Summary of the invention

The shortcoming of prior art in view of the above, the object of the present invention is to provide a kind of LED spotlight, high for solving LED module quantity of heat production in prior art, the problem of LED spotlight radiating effect difference.

For achieving the above object and other relevant objects, the invention provides a kind of LED spotlight, it comprises: radiator, surrounds a tubular structure by radiating wing, have the tubular inner chamber and horn-like inner chamber that are interconnected in it, the osculum end of horn-like inner chamber connects with tubular inner chamber; LED module, is placed in the osculum end of described horn-like inner chamber; Trumpet-shaped reflector, is placed in the front being positioned at LED module in horn-like inner chamber; Shell, comprises upper casing and the lower casing of tubular, and upper shell is in the upper end of described radiator, and lower shell, in the lower end of described radiator, forms a space and a part for described radiator is exposed, be fixed with transmission element in the bottom of lower casing between upper and lower shell; Power supply, to be fixed on upper casing and to be electrically connected with described LED module.

Preferably, also comprise and be placed in the radiator fan that radiator top is positioned at tubular inner chamber rear, radiator fan is connected with described power electric.

Preferably, the top of described upper casing is also provided with one with the top cover of through hole, and described top cover is fixed on the rear of described radiator fan.

Preferably, described radiator is divided in described space up and down equally.

Preferably, described LED module is positioned at the center of described radiator.

Preferably, described radiating wing is along the axially extended radiation rib of described radiator.

Preferably, described transmission element is glass, glass and described shell is fixed by a retainer ring.

As mentioned above, LED spotlight of the present invention, there is following beneficial effect: its shell is made up of tubular upper and lower casing, leave space between upper and lower casing, the tubular inner chamber in such radiator and horn-like inner chamber form the internal heat dissipating passage of LED spotlight, and this internal heat dissipating passage exchanges in this gap and outside air, form through vent passages, be convenient to shedding of heat in radiator with this, improve the efficiency of LED module, life-extending; In addition, adopt radiator fan to carry out auxiliary heat dissipation, radiator fan is placed in the rear of LED module, radiator fan initiatively gives the transporting cold wind of the LED module in work, reduces the temperature of chip circumference, makes radiating effect better; LED module is positioned at the center of radiator, and the heat produced during LED work to surrounding conduction, adds rate of heat dispation, makes heat radiation improve radiating effect in time, extend the service life of LED module centered by radiator.

Accompanying drawing explanation

Fig. 1 is shown as LED spotlight stereogram of the present invention.

Fig. 2 is shown as the partial sectional view of LED spotlight of the present invention.

Fig. 3 is shown as the explosive view of LED spotlight of the present invention.

Element numbers explanation

1 lower casing

2 upper casings

3 radiators

4 power supplys

5 radiator fans

6 LED modules

7 reflectors

8 transmission elements

9 retainer rings

10 top covers

11 spaces

Detailed description of the invention

By particular specific embodiment, embodiments of the present invention are described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present invention and effect easily.

Refer to Fig. 1 to Fig. 3.Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the present invention, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the present invention can produce and the object that can reach, still all should drop on disclosed technology contents and obtain in the scope that can contain.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the present invention.

As shown in Figure 1, Figure 2 and Figure 3, the invention provides a kind of LED spotlight, it comprises: radiator 3, surrounds a tubular structure by radiating wing, and have the tubular inner chamber and horn-like inner chamber that are interconnected in it, the osculum end of horn-like inner chamber connects with tubular inner chamber; LED module 6, is placed in the osculum end of horn-like inner chamber; Trumpet-shaped reflector 7, is placed in the front being positioned at LED module 6 in horn-like inner chamber; Shell, comprise upper casing 2 and the lower casing 1 of tubular, upper casing 2 is enclosed within the upper end of radiator 3, and lower casing 1 is enclosed within the lower end of radiator 3, forms a space 11 and a part for radiator 3 is exposed, be fixed with transmission element 8 in the bottom of lower casing 1 between upper and lower shell; Power supply 4, to be fixed on shell and to be electrically connected with LED module 6 and radiator fan 5.Shell of the present invention is made up of tubular upper and lower casing, space is left between upper and lower casing, tubular inner chamber in such radiator and horn-like inner chamber form the internal heat dissipating passage of LED spotlight, this internal heat dissipating passage exchanges in this gap and outside air, form through vent passages, shedding of heat in radiator is convenient to this, LED module is lowered the temperature, therefore, the heat of LED module is well derived by the radiator of tubular, whole radiator structure is simple, and good heat dissipation effect, extends the service life of LED spotlight.

For the omnibearing heat radiation in better implementation space, above-mentioned radiating wing is along the axially extended radiation rib of radiator 3, also can be other radiator structures, only needs the heat that LED module 6 produces well to be derived.As shown in Figure 3, horn-like inner chamber in radiator 3 is expanded gradually outwardly by interior, osculum is inwardly outwardly for the large mouth of horn-like inner chamber, so both be convenient to place trumpet-shaped reflector 7, be convenient to again the derivation of heat, and the cold wind that the tubular inner chamber above horn-like inner chamber is convenient to the external world blows on LED module 6, it is directly lowered the temperature, accelerate the rate of heat dissipation of LED module.The length of above-mentioned reflector 7 is longer than the length of horn-like inner chamber, as shown in Figure 2, makes a part of reflector 7 expose to radiator 3 outside, can extend heat dissipation channel like this, strengthen radiating effect.The light emission direction of LED module is that light like this penetrates from reflector towards the large oral area of reflector, and this reflector plays the effect of optically focused.

For dispelling the heat better, arrange a radiator fan 5 at tubular inner chamber rear, radiator 3 top, radiator fan 5 is electrically connected with power supply 4, and this radiator fan can initiatively give LED module transporting cold wind, accelerates air circulation in radiator, LED module is lowered the temperature.

Radiator 3 is divided in space about 11 between above-mentioned upper and lower shell equally, namely space is positioned at radiator center, LED module 6 is also positioned at the center of radiator 3, in the shortest distance, the heat that LED module produces is delivered to the external world like this, shorten vent passages, the direct and external world carries out heat exchange, without the need to other media, simplify radiator structure, but radiating effect is still protected.Time fixing, upper and lower shell is fixed with radiator 3 respectively, and above-mentioned reflector 7 is clamped between transmission element 8 and radiator 3, makes it can not axial float, and this fixed form is simple and reliable, is easy to produce.

Because on, lower casing is tubular structure, so shell rear and front end all has air vent, and the shell of two-piece unit formula is divided into two sections in heating center (i.e. LED module place) periphery, heat dissipation channel (i.e. tubular inner chamber and horn-like inner chamber) in radiator 3 directly and shot-light contacting external air, whole LED spotlight is inside and outside forms vent passages, be beneficial to very much heat that LED module distributes directly and outside air exchange, radiator fan 5 is adopted again initiatively to give LED module 6 cold air, acceleration air circulates, temperature in rapid reduction lamp, improve the operating efficiency of LED spotlight and extend its service life.

The top of above-mentioned upper casing 2 is also provided with one with the top cover 10 of through hole, and the through hole on top cover 10 plays logical wind action, and top cover 10 is fixed on the rear of radiator fan 5.Above-mentioned transmission element 8 is glass, and glass and shell are fixed by a retainer ring 9, this retainer ring also can be a rosette, increases the attractive in appearance of LED spotlight.

In sum, LED spotlight of the present invention, its shell is made up of tubular upper and lower casing, space is left between upper and lower casing, tubular inner chamber in such radiator and horn-like inner chamber form the internal heat dissipating passage of LED spotlight, this internal heat dissipating passage exchanges in this gap and outside air, forms through vent passages, is convenient to shedding of heat in radiator with this; In addition, one radiator fan is set at the rear of LED module and the top of radiator, adopts radiator fan initiatively to give the transporting cold wind of the LED module in work, LED module is lowered the temperature, whole radiator structure is simple, and good heat dissipation effect, extends the service life of LED spotlight.So the present invention effectively overcomes various shortcoming of the prior art and tool high industrial utilization.

Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.

Claims

1. a LED spotlight, is characterized in that, comprising:

Radiator (3), surrounds a tubular structure by radiating wing, and have the tubular inner chamber and horn-like inner chamber that are interconnected in it, the osculum end of horn-like inner chamber connects with tubular inner chamber;

LED module (6), is placed in the osculum end of described horn-like inner chamber;

Trumpet-shaped reflector (7), is placed in the front being positioned at LED module (6) in horn-like inner chamber;

Shell, comprise upper casing (2) and the lower casing (1) of tubular, upper casing (2) is enclosed within the upper end of described radiator (3), lower casing (1) is enclosed within the lower end of described radiator (3), forming a space (11) between upper and lower shell makes a part for described radiator (3) expose, and is fixed with transmission element (8) in the bottom of lower casing (1); Wherein, described radiator is divided in described space up and down equally, and described LED module is positioned at the center of described radiator;

Power supply (4), is fixed on upper casing (2) and goes up and be electrically connected with described LED module (6).

2. LED spotlight according to claim 1, is characterized in that: also comprise and be placed in the radiator fan (5) that radiator (3) top is positioned at tubular inner chamber rear, radiator fan is electrically connected with described power supply (4).

3. LED spotlight according to claim 2, it is characterized in that: the top of described upper casing (2) is also provided with one with the top cover (10) of through hole, and described top cover (10) is fixed on the rear of described radiator fan (5).

4. LED spotlight according to claim 1, is characterized in that: described radiating wing is along described radiator (3) axially extended radiation rib.

5. LED spotlight according to claim 1, is characterized in that: described transmission element (8) is glass, glass and described shell is fixed by a retainer ring (9).