CN2461055Y

CN2461055Y - Double radiation fin

Info

Publication number: CN2461055Y
Application number: CN 00262438
Authority: CN
Inventors: 张瑞祺
Original assignee: Mitac Technology Corp
Current assignee: Getac Technology Corp
Priority date: 2000-12-01
Filing date: 2000-12-01
Publication date: 2001-11-21
Anticipated expiration: 2010-12-01

Abstract

The utility model relates to an improved system radiating structure which is a double-layer radiation fin which is provided with a first-layer radiation fin and a second-layer radiation fin. A hollow part is arranged between the first-layer radiation fin and the second-layer radiation fin, both opposite sides of the two radiation fins are connected, the other two opposite sides are not connected, and a plurality of radiating holes are arranged on the first-layer radiation fin so that air between the two radiation fins forms convection.

Description

The two-layer equation heat sink

The utility model relates to a kind of system radiating structure, particularly a kind of two-layer equation heat sink that is used for notebook computer.

For notebook computer, because processing speed and data quantity increase gradually, inner many elements all can produce a large amount of heat energy when operating, if can not suitably heat be got rid of, the computer internal temperature is improved, the element working efficiency reduces, and therefore how to provide high efficiency heat abstractor, is the important research and development problem of industry always.Because notebook computer need be taken into account compact demand, make that the bigger electric fan of volume is limited on using, cause heat abstractor difficult in design.

The cooling system of notebook computer of the prior art often utilizes keyboard board heat radiation, and its base plate is the heat radiator of single almag or other metals, with the thermal energy conduction of inner member to keyboard board, to be dissipated into the external world.Yet on keyboard board (being heat radiator), all multiple holes and fixed sturcture are arranged, in order to be connected with keyboard mechanism.Therefore, regular meeting makes many foreign material, dust fall into the hole of keyboard base because of carelessness from the button slot, and with the circuit contacts of computer inside, cause phenomenons such as short circuit.Moreover, when keyboard board of the prior art single and heat exchange with outside, and can't provide the thermal convection of effect, influence radiating efficiency.

In view of this, the purpose of this utility model provides a kind of heat radiator with preferable radiating effect, and has and be difficult for making foreign material, dust to fall in the host computer, the advantage of the phenomenon that is short-circuited.

According to above-mentioned and other purpose of the present utility model, a kind of two-layer equation heat sink is proposed, have ground floor heat radiator and second layer heat radiator, wherein dispose the heat radiation hole on the ground floor heat radiator, be hollow between ground floor heat radiator and the second layer heat radiator, be connected by two opposite side, and other two opposite side are not connected.

The utility model has the advantages that, owing at the heat sink that increases pair of lamina hollow below the keyboard and between the inner body, no longer be single aluminium flake, and join with system shell around the two-layer equation heat sink, so can form a heat build-up space, formation temperature difference and produce the convection current that nature not to hinder.Dust, foreign material fall into the heat radiation hole that is connected with keyboard accidentally, and the also unlikely computer inner body that enters forms short circuit.

For above-mentioned and other purpose of the present utility model, feature and advantage can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. is described in detail below:

Fig. 1 is the stereographic map according to a kind of heat radiator of a preferred embodiment of the present utility model;

Fig. 2 is according to a kind of notebook computer vertical view with heat radiator of a preferred embodiment of the present utility model;

Fig. 3 is the sectional view of the II-II profile line in the corresponding diagram 2;

Fig. 4 is the sectional view of the I-I profile line in the corresponding diagram 2:

Fig. 5 is the stereographic map of corresponding diagram 2;

Fig. 6 is the parts explosion of corresponding diagram 2;

Please refer to Fig. 1, Figure 1 shows that a pair of laminar heat-dissipating metal sheet, have ground floor heat radiator 102 and second layer heat radiator 104, roughly be a rectangle.Be hollow between ground floor heat radiator 102 and the second layer heat radiator 104, engage that other two opposite side 108a, 108b then do not engage by two opposite side 106a, the 106b that engage.So can form naturally a hollow to fluid space, cold air can be entered by the direction shown in arrow 120a, the 120b, takes away the heat that spare part is produced in the computer, by the direction diffluence shown in the arrow 130.

On the ground floor heat radiator, dig out hole 110, can increase radiating effect.If have dust, foreign material to fall into accidentally from hole 110, then there is second layer heat radiator 104 to stop, make dust and foreign material can't fall into computer, cause the short circuit of spare part in the computer.

Please wherein Figure 2 shows that the vertical view of the notebook computer that includes the two-layer equation heat sink simultaneously with reference to Fig. 2,3,4,5,6.Figure 3 shows that the sectional view of the II-II profile line in the corresponding diagram 2.Figure 4 shows that the sectional view of the I-I profile line in the corresponding diagram 2.Figure 5 shows that the stereographic map of corresponding diagram 2.Figure 6 shows that the parts explosion of corresponding diagram 2.Configuration two-layer equation heat sink 206 below keyboard 202, the rough rectangle that is makes cold air be flowed into by the direction that arrow 310a, 310b are indicated, and hot-air is flowed out by the direction that arrow 320 is indicated.Two-layer equation heat sink 206 is disposed under the keyboard 202 among Fig. 4, is made up of ground floor heat radiator 412 and second layer heat radiator 414, and air intake vent position 408 is between ground floor heat radiator 412 and second layer heat radiator 414.As previously mentioned, first heat radiator 412 and second heat radiator 414 there is no at the opposite side of computer two sides and engage to be formed into air port 408, and the opposite side of two sides then forms joint in addition.Among Fig. 6, the ground floor heat radiator 412 of two-layer equation heat sink 206 also disposes heat radiation hole 610, in order to allow hot gas shed, is solid as for 414 of second layer heat radiator, prevents that foreign object from falling into computer inside.

Wherein, have the knack of those skilled in the art and should know, the heat radiation hole 610 of ground floor heat radiator 412 configurations can dispose arbitrarily on demand, can be single, can be many rows or other various arrangements.Its shape can also be arbitrary shape, can be rectangle, circle or irregularly shaped etc.

As for the material of two-layer equation heat sink, can be the good sheet metal of any thermal diffusivity, for example aluminium, almag.Wherein the heater element in second layer heat radiator and the notebook computer, for example be that the CPU (central processing unit) (not shown) is connected with the preferable material of heat conductivity, can utilize heat-conduction principle that thermal energy conduction to the second layer that the computer inner member produces is taught backing, and utilize cross-ventilation in the two-layer equation heat sink, heat energy is distributed to the external world effectively.

Though the utility model with preferred embodiment openly as above; but it is not in order to limit the utility model; any technician who has the knack of this technology; in not breaking away from spirit and scope of the present utility model; still can be used for a variety of modifications and variations, therefore protection domain of the present utility model should be defined by accompanying claim.

Claims

1. a two-layer equation heat sink is characterized in that, it has 2 first groups of opposite side and 2 second groups of opposite side, and this two-layer equation heat sink comprises:

One ground floor heat radiator disposes a plurality of holes on it; And

One second layer heat radiator, parallel with this ground floor heat radiator and keep a spacing, wherein engage with this ground floor heat radiator, and these 2 second groups of opposite side do not engage by these 2 first groups of opposite side.

2. two-layer equation heat sink as claimed in claim 1 is characterized in that, the material of this ground floor heat radiator and this second layer heat radiator is the good metal of a thermal diffusivity.

3. two-layer equation heat sink as claimed in claim 2 is characterized in that, the good metal of this thermal diffusivity is selected from the material in the group that aluminium and almag form.

4. two-layer equation heat sink as claimed in claim 1 is characterized in that, those holes of this ground floor heat radiator are single arrangement.

5. two-layer equation heat sink as claimed in claim 1 is characterized in that, those holes of this ground floor heat radiator are that many rows arrange.

6. two-layer equation heat sink as claimed in claim 1 is characterized in that, the shape of those holes that disposed on this ground floor heat radiator is selected from circle, rectangle, reaches the shape in the group that irregular shape was formed.

7. a notebook computer heat sink is suitable for being disposed at a notebook computer, and this notebook computer comprises a keyboard and a thermal source at least, it is characterized in that, this heat sink is disposed at the below of this keyboard, has 2 first opposite side and 2 second opposite side, and wherein this heat sink comprises at least:

One ground floor heat radiator disposes a plurality of holes on it; And

One second layer heat radiator, parallel with this ground floor heat radiator and keep a spacing, wherein engage with this ground floor heat radiator, and this 2 second opposite side does not engage, and this second layer heat radiator is connected with this thermal source thermal conductivity by this 2 first opposite side.

8. notebook computer heat sink as claimed in claim 7 is characterized in that, the material of this heat sink is the good metal of a thermal diffusivity.

9. notebook computer heat sink as claimed in claim 8 is characterized in that, the good metal of this thermal diffusivity is selected from the material in the group that aluminium and almag form.

10. notebook computer heat sink as claimed in claim 7 is characterized in that, those holes of this ground floor heat radiator are single arrangement.

11. notebook computer heat sink as claimed in claim 7 is characterized in that, those holes of this ground floor heat radiator are that many rows arrange.

12. notebook computer heat sink as claimed in claim 7 is characterized in that, the shape of those holes that disposed on this ground floor heat radiator is selected from circle, rectangle, reaches the shape in the group that irregular shape was formed.