CN2930231Y

CN2930231Y - Automatic heat radiator

Info

Publication number: CN2930231Y
Application number: CN 200620124474
Authority: CN
Inventors: 宋慧玲
Original assignee: Top Union Globaltek Inc TW
Current assignee: Top Union Globaltek Inc TW
Priority date: 2006-07-26
Filing date: 2006-07-26
Publication date: 2007-08-01
Anticipated expiration: 2016-07-26

Abstract

The utility model relates to an automatic heat dissipating device which comprises a circuit board. A plurality of light-emitting diode (LED) is arranged on the circuit board whose two ends are provided respectively a metal extension piece that is connected with a heat dissipating piece. A plurality of run-through heat dissipating holes is arranged with proper interval on the heat dissipating piece, thereby making the heat generated by the lighting of the light-emitting diode (LED) conducted to the heat dissipating piece through the circuit board and the metal extension piece and achieving the purpose of heat dissipating through the plurality of heat dissipating holes on the heat dissipating piece to prevent the fast aging of the light-emitting diode (LED).

Description

Automatic heat radiator

Technical field

The utility model is about a kind of automatic heat radiator, refers in particular to a kind of when light-emitting diode employed automatic heat radiator when luminous.

Background technology

The power consumption of light-emitting diode is low, is extensively applied on the lighting use in recent years.Light-emitting diode power saving, life-span are long, with single assembly, luminance shortage is to provide lighting use, the light-emitting diode that uses must be increased to more than the some, just brightness can be increased to a certain degree, use to be used as illumination, but what must will consider is, though the heat energy that light-emitting diode is produced when work is more much lower than general bulb, plural assembly is worked simultaneously, and its heat energy is then very considerable, therefore, the heat energy that light-emitting diode is produced when work can effectively dispel the heat, then for quite important.

Be arranged at light-emitting diode on the circuit board with majority, when the heat that most light-emitting diodes are produced in luminous back, can be via the heat conduction of metal Extendible flake to heat sink, owing to heat sink is solid lamellar body; Its shortcoming is: because heat sink is solid lamellar body, its heat radiation function is not enough, the heat on the heat sink can not be derived fast, thereby, can't reach the purpose of quick heat radiating, can cause the light-emitting diode quick aging, necessity of being improved is arranged in fact.

The utility model content

The purpose of this utility model is to provide a kind of automatic heat radiator, so that light-emitting diode reaches the purpose of quick heat radiating, and can prevent the light-emitting diode quick aging.

For achieving the above object, the automatic heat radiator that the utility model provides has a circuit board, with spacing distance a plurality of light-emitting diodes is set thereon; Number metal Extendible flake, the one side is connected with circuit board; The heat sink of strip of sheet, it is connected in metal Extendible flake side in addition; It is provided with most louvres with spacing distance on heat sink.

Described automatic heat radiator, wherein louvre is rectangular, is formed with continuous protruding, recess respectively in each place, limit of louvre.

Described automatic heat radiator, wherein louvre is circular louvre, forms several continuous protruding, recesses with spacing distance on the circumference of louvre.

Described automatic heat radiator, wherein louvre is leg-of-mutton louvre, forms continuous protruding, recess with spacing distance on three limits of louvre.

By enforcement of the present utility model, the concrete effect enhancement that can obtain comprises:

Can make light-emitting diode reach the quick heat radiating purpose, and can prevent the light-emitting diode quick aging: because light-emitting diode is arranged on the circuit board, light-emitting diode can reach the heat sink place by metal Extendible flake heat in the heat that luminous back produces, most louvres are set on heat sink, by the setting of each louvre, cold air is entered, and with the torrid zone on the heat sink from, reaching automatic heat radiation and quick heat radiating purpose, and can prevent the light-emitting diode quick aging.

Description of drawings

Fig. 1 is the floor map of first kind of preferred embodiment of the present utility model.

Fig. 2 is the stereo appearance figure of first kind of heat sink of the present utility model.

Fig. 3 is the plan view from above of first kind of heat sink of the present utility model.

Fig. 4 is the floor map of second kind of preferred embodiment of the present utility model.

Fig. 5 is the stereo appearance figure of second kind of heat sink of the present utility model.

Fig. 6 is the plan view from above of second kind of heat sink of the present utility model.

Fig. 7 is the stereo appearance figure of the third heat sink of the present utility model.

Fig. 8 is the plan view from above of the third heat sink of the present utility model.

Embodiment

Please extremely shown in Figure 3 referring to Fig. 1, the utility model is an automatic heat radiator, includes:

One circuit board (10) is provided with a plurality of light-emitting diodes (LED) (11) with spacing distance thereon, and light-emitting diode (LED) (11) can be luminous;

Number metal Extendible flake (20), the one side is connected with circuit board (10);

One is the heat sink (30) of strip of sheet, it is connected in metal Extendible flake (20) side in addition, go up with proper spacing apart from most louvres (31) are set in heat sink (30), louvre (31) is rectangular, each place, limit in louvre (31) is formed with continuous protruding, recess (311) respectively, to increase area of dissipation.

As shown in Figure 1 to Figure 3, when using by being combined in of said structure, the heat that is produced after luminous when light-emitting diode (LED) (11), can conduct to circuit board (10) locates, conducting to heat sink (30) via metal Extendible flake (20) again locates, because the spacing distance on the heat sink (30) is provided with several louvres (31), each limit of louvre (31) forms continuous protruding respectively, recess (311), to increase area of dissipation, because cold air can be entered by louvre (31), to conduct to the heat that louvre (31) is located again, with heat be with up fast from, to reach the purpose of quick heat radiating, to prevent that light-emitting diode (LED) (11) is because of the overheated problem that quick aging takes place.

As shown in Figure 4, major part is same as the structure shown in Fig. 1 to Fig. 3, its difference is in: circuit board (10) and most light-emitting diodes (LED) (11) and is arranged at heat sink (30) downside respectively, it can reach the quick heat radiating purpose equally, and can prevent that light-emitting diode (LED) (11) from because of overheated quick aging taking place.

As shown in Fig. 5, Fig. 6, major part is same as the heat sink (30) among Fig. 2, Fig. 3, heat sink among Fig. 5, Fig. 6 (30A) is gone up set louvre (31A), also can be circular louvre (31A), form several continuous protruding, recesses (311A) with spacing distance on the circumference of louvre (31A), it can reach equally and be same as aforementioned purpose.

As shown in Fig. 7, Fig. 8, major part is same as the heat sink (30) among Fig. 2, Fig. 3, heat sink among Fig. 7, Fig. 8 (30B) is gone up the louvre (31B) that is provided with, also can be leg-of-mutton louvre (31B), on three limits of louvre (31B), form continuous protruding, recess (311B) with spacing distance, equally, can reach identical aforesaid creation purpose.

Claims

1, a kind of automatic heat radiator has a circuit board, with spacing distance a plurality of light-emitting diodes is set thereon; Number metal Extendible flake, the one side is connected with circuit board; The heat sink of strip of sheet, it is connected in metal Extendible flake side in addition; It is characterized in that:

On heat sink, most louvres are set with spacing distance.

2, automatic heat radiator as claimed in claim 1, it is characterized in that: wherein louvre is rectangular, is formed with continuous protruding, recess respectively in each place, limit of louvre.

3, automatic heat radiator as claimed in claim 1 is characterized in that: wherein louvre forms several continuous protruding, recess with spacing distance for circular louvre on the circumference of louvre.

4, automatic heat radiator as claimed in claim 1 is characterized in that: wherein louvre is leg-of-mutton louvre, forms continuous protruding, recess with spacing distance on three limits of louvre.