TWI429388B - Extendable heat dissipation device and portable electronic equipment using same - Google Patents

Description

Portable electronic device and pluggable heat sink thereof

The present invention relates to a portable electronic device, and more particularly to a portable electronic device having a pluggable heat sink.

As the power of electronic components continues to increase, the problem of heat dissipation has received more and more attention. In portable electronic products, such as notebook computers, in order to effectively dissipate the excess heat, conventional methods usually A heat sink is attached to the surface of the electronic component, and the heat of the heat-generating electronic component is carried away by the heat sink.

In the heat dissipation design of the notebook computer, the heat sink of the heat pipe, the heat sink and the fan is often fixed on the motherboard by screws or other fastening devices to be in close contact with the electronic components. However, as the number of components in the heat sink increases, the weight of the notebook computer will be additionally increased, causing inconvenience to the user, which hinders the development of the notebook computer toward slimming. At the same time, when such a heat sink device has a problem, the upper cover of the notebook computer, the keyboard, and the like must be removed to replace, repair, and reassemble the heat sink device, resulting in inconvenience in maintenance.

In view of the above, it is necessary to provide a portable electronic device and a pluggable heat sink that are convenient to carry and easy to inspect and repair the heat sink.

A portable electronic device includes a casing and a heat-generating electronic component housed in the casing and a heat dissipating device for dissipating heat from the heat-generating electronic component, the casing including a bottom plate and a side plate of the periphery of the bottom plate, the side plate is provided with an insertion opening adjacent to the heat-generating electronic component, and the insertion port is configured for the heat dissipation device to be inserted into the interior of the casing to dissipate heat from the heat-generating electronic component or to be pulled out of the casing.

A portable electronic device includes a casing, a heat-generating electronic component, a first heat-dissipating device, and a second heat-dissipating device. The heat-dissipating electronic component and the first heat-dissipating device are received in the casing, and the first heat-dissipating device is disposed The heat-emitting electronic component includes a bottom plate and a side plate disposed around a circumference of the bottom plate, and the side plate is provided with an insertion opening adjacent to the heat-generating electronic component, and the second heat sink can be inserted from the insertion hole The inside of the housing is configured to assist heat dissipation of the heat-generating electronic component or to be pulled out of the housing from the insertion opening.

The pluggable heat sink is adapted to be inserted into the portable electronic device from the insertion opening of the portable electronic device The heat-dissipating electronic component in the portable electronic device is configured to dissipate heat. The plug-in heat sink includes a guiding plate, a heat pipe, a centrifugal fan and a heat dissipating fin set. The heat pipe and the centrifugal fan are disposed on the guiding plate. The heat dissipating fin assembly is disposed at an air outlet of the centrifugal fan, and the pluggable heat dissipating device is guided into the portable electronic device from the insertion port through the guiding plate.

Compared with the prior art, the heat dissipating device in the portable electronic device can be further inserted into the electronic device by the user selecting to insert or waiting for the system to automatically issue a prompt, thereby reducing the weight of the electronic device and making it convenient to carry. At the same time, the inspection and maintenance of the heat dissipating device becomes simple, and the inspection and maintenance of the heat dissipating device can be performed periodically without disassembling the upper cover and the keyboard, which is advantageous for the maintenance of the function of the heat dissipating device.

10‧‧‧shell

11‧‧‧floor

12‧‧‧ Guide wall

14‧‧‧ side panels

16‧‧‧Inlet

18‧‧‧ cover

20‧‧‧ boards

24‧‧ ‧ gap

30, 40‧‧‧ Heat sink

32‧‧‧Substrate

34‧‧‧ Heatsink

42‧‧‧Guideboard

44‧‧‧heat pipe

46‧‧‧ Centrifugal fan

48‧‧‧Fixing fin set

50‧‧‧Fever electronic components

120‧‧‧ Guide ribs

160‧‧‧Bottom

320‧‧‧heat end

322‧‧‧heating end

324‧‧ ‧ ribs

326‧‧‧ card slot

420, 422‧‧‧ board

440‧‧‧Condensation section

442‧‧‧Evaporation section

460‧‧‧air outlet

462‧‧‧Fan frame

464‧‧‧Rotor

466, 467‧‧ ‧ inlet

468‧‧‧Support

1 is an exploded perspective view of an embodiment of a portable electronic device of the present invention.

2 is a perspective view of another angle of the heat sink of FIG. 1.

Figure 3 is an assembled, isometric view of Figure 1.

The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

The invention is described by taking a notebook computer as an example. As shown in FIG. 1 , the notebook computer includes a casing 10 , a circuit board 20 disposed in the casing 10 , and a first heat dissipation disposed on the circuit board 20 . Device 30 and second heat sink 40. The first heat sink 30 and the second heat sink 40 collectively dissipate heat from a heat-generating electronic component 50, such as a CPU, provided on the circuit board 20.

The second heat sink 40 includes a guiding plate 42 , a heat pipe 44 disposed on the guiding plate 42 , a centrifugal fan 46 , and a heat dissipation fin set 48 disposed at the air outlet 460 of the centrifugal fan 46 . . Referring to FIG. 2 at the same time, the guiding plate 42 is made of a metal material having a high thermal conductivity, such as aluminum, copper or the like. The guiding plate 42 has an "L" shape as a whole, and includes a rectangular first plate body 420 and a rectangular second plate body 422 extending laterally from one end of the first plate body 420. The centrifugal fan 46 is disposed on an upper surface of the first plate body 420 adjacent to the second plate body 422, and the air outlet 460 faces one side of the second plate body 422 of the guiding plate 42. The centrifugal fan 46 includes a frame 462 and a rotor 464. The fan frame 462 is disposed on the guiding plate 42 and is enclosed by the guiding plate 42 to form a receiving space (not labeled) for receiving the rotor 464 therein. The upper surface of the fan frame 462 and the guide plate 42 are respectively provided with an air inlet 466, 467 at a position facing the rotor 464. A support portion 468 is disposed in the air inlet 467 of the guiding plate 42 to support the rotation of the rotor 464 of the centrifugal fan 46 in the fan frame 462.

The heat dissipation fin set 48 is disposed at the air outlet 460 of the centrifugal fan 46. The heat pipe 44 includes a condensation section 440 to which the lower surface of the heat dissipation fin group 48 is attached and an evaporation section 442 which is bent from the condensation section 440 to the first plate body 420. The evaporation section 442 is substantially in the shape of an "S". The lower surface of the evaporation section 442 is attached to the upper surface of the guiding plate 42 and has an end substantially adjacent to the second plate 422 of the first plate 420. One end is flush.

The first heat sink 30 includes a flat substrate 32 and a plurality of heat dissipation columns 34 integrally formed by one end of the substrate 32. The substrate 32 and the circuit board 20 are parallel to each other, and include a heat absorption end 320 and a heat dissipation end 322. The lower surface of the heat absorbing end 320 of the substrate 32 is attached to the upper surface of the heat-generating electronic component 50 to absorb the heat generated by the heat-generating electronic component 50. The upper surface of the heat absorbing end 320 of the substrate 32 protrudes upward at a position facing the heat-generating electronic component 50 to form three ridges 324. The three ribs 324 together form a semi-closed card slot 326 that is open away from the heat dissipation end 322 of the substrate 32. The width of the slot 326 is equivalent to the width of the first plate 420 of the guiding plate 42 and can be received by the end of the first plate 420 away from the second plate 422. The plurality of heat dissipation posts 34 are disposed on the upper surface of the heat dissipation end 322 of the substrate 32 to further dissipate heat conducted from the heat absorption end 320 to the heat dissipation end 322.

The housing 10 includes a bottom plate 11, a side plate 14 extending upward from a periphery of the bottom plate 11, and a keyboard frame (not shown) disposed above the bottom plate 11. The side plate 14 is provided with a rectangular insertion opening 16 and a cover plate 18 corresponding to the insertion opening 16 at a position corresponding to the opening of the slot 326 of the first heat sink 30. The height of the insertion opening 16 is substantially equal to the maximum height of the second heat sink 40, and the width of the opening 16 is substantially equal to the maximum width of the second heat sink 40. The bottom side 160 of the insertion opening 16 is on the same plane as the upper surface of the substrate 32 of the first heat sink 30.

The bottom plate 11 extends vertically upwardly adjacent to the insertion opening 16 to form two guiding walls 12. The two guiding walls 12 are parallel to each other and are located on the left and right sides of the insertion opening 16 . Each guide wall 12 extends from the side panel 14 to the end of the heat absorbing end 320 of the first heat sink 30. The inner surface of each guiding wall 12 extends toward the direction of the other guiding wall 12 to form a protruding guiding rib 120. The height of the guiding rib 120 relative to the bottom plate 11 is equal to the height of the bottom edge 160 of the substrate 32 and the insertion opening 16 relative to the bottom plate 11, that is, the upper surface of the guiding rib 120 and the upper surface of the substrate 32 are inserted. The bottom edges 160 of the ports 16 are on the same plane. The guiding rib 120 is used to support the second plate 422 of the guiding plate 42. The second heat sink 40 can be disposed through the arrangement of the guiding ribs 120 on the guiding wall 12 . The insertion port 16 is inserted into the inside of the notebook. The guiding rib 120 guides the guiding plate 42 of the second heat sink 40 to slide along the second heat sink 40 when the second heat sink 40 is inserted or pulled out from the insertion opening 16 . The circuit board 20 and the substrate 32 are provided with a semicircular notch 24 on one side of the insertion opening 16. When the second heat sink 40 is inserted from the insertion port 16 and received in the interior of the casing 10, the notch 24 can be directly under the air inlet 467 of the centrifugal fan 46 to ensure that the air inlet 467 of the centrifugal fan 46 can be inhaled. airflow.

When the second heat sink 40 is assembled into the interior of the notebook computer, the cover 18 is first opened, and the second heat sink 40 is horizontally placed and aligned with the insertion port 16 , wherein the guide plate 42 is One end of the first plate 420 faces outward, and one side of the first plate 420 abuts against the guiding rib 120 of one of the guiding walls 12; The second heat sink 40 is pushed to move inward along the guiding rib 120 of the guiding wall 12 until the entire heat sink 40 is received inside the notebook. The first board 420 is inwardly moved to extend onto the substrate 32 of the first heat sink 30. The two sides of the first board 420 are respectively disposed in the card slot 326, and the bottom surface thereof and the first heat sink The upper surfaces of the heat absorbing ends 320 of 30 are in contact with each other. The guiding plate 42 is moved inwardly toward the guiding rib 120 of the guiding wall 12, and the guiding plate 42 is respectively erected on both sides of one end of the second plate 422. Between the two guiding walls 12, the two sides of the bottom surface are in contact with the upper surfaces of the guiding ribs 120 of the two guiding walls 12, respectively. Finally, the cover 18 is closed to close the insertion opening 16. Similarly, when the second heat sink 40 is removed from the notebook computer, it is only necessary to open the cover 18 to pull it out.

When the notebook starts a general running program or has a short use time, it can be dissipated only by the first heat sink 30. When the notebook computer generates a high heat, the user can select to insert the second heat sink 40, or wait for the system to automatically issue a prompt, and the user further inserts the second heat sink 40. At this time, the heat generating electronic component 50 is generated. The heat is partially absorbed by the heat absorbing end 320 of the first heat sink 30 to the heat radiating end 322, and the heat radiating end of the heat radiating end 322 34 is further distributed, a portion of the heat is conducted from the heat absorbing end 320 of the first heat sink 30 to the guide plate 42 of the second heat sink 40, is conducted to the heat sink fin group 48 through the heat pipe 44 on the guide plate 42, and is centrifuged. The airflow generated by the fan 46 blows the heat of the heat sink fin group 48 through the insertion port 16 to the outside of the notebook computer. The second heat dissipating device 40 can be assembled and disassembled only by plugging and unplugging, and the operation is simple and quick. Compared with the conventional notebook computer, the heat dissipating device can be repaired without the need to remove the upper cover and the keyboard, and is also convenient. Regular inspection of the heat sink is beneficial to the maintenance of the function of the heat sink.

In summary, the present invention conforms to the requirements of the invention patent, and proposes a patent application according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art will be included in the following claims.

10‧‧‧shell

11‧‧‧floor

12‧‧‧ Guide wall

14‧‧‧ side panels

16‧‧‧Inlet

20‧‧‧ boards

24‧‧ ‧ gap

30, 40‧‧‧ Heat sink

32‧‧‧Substrate

34‧‧‧ Heatsink

42‧‧‧Guideboard

44‧‧‧heat pipe

46‧‧‧ Centrifugal fan

48‧‧‧Fixing fin set

50‧‧‧Fever electronic components

120‧‧‧ Guide ribs

160‧‧‧Bottom

320‧‧‧heat end

322‧‧‧heating end

324‧‧ ‧ ribs

326‧‧‧ card slot

440‧‧‧Condensation section

442‧‧‧Evaporation section

460‧‧‧air outlet

462‧‧‧Fan frame

464‧‧‧Rotor

466‧‧‧air inlet

Claims (9)

A portable electronic device includes a casing and a heat-generating electronic component housed in the casing and a heat dissipating device for dissipating heat from the heat-generating electronic component, the casing comprising a bottom plate and a side plate disposed on a periphery of the bottom plate The improvement is that the side plate is provided with an insertion port at a position close to the heat-generating electronic component, and the insertion port is configured to allow the heat dissipation device to be inserted into the interior of the casing to dissipate heat from the heat-generating electronic component or to pull out the casing. The outer casing further includes two guiding walls on both sides of the insertion opening, and the inner surface of each guiding wall extends toward the direction of the other guiding wall to form a guiding rib, and the guiding rib can be inserted in the heat dissipating device Or the guide plate guiding the heat sink is slid along the inside of the casing. The portable electronic device of claim 1, wherein the housing further comprises a substrate disposed on the heat-generating electronic component, the upper surface of the substrate being on the same plane as the upper surface of the guiding rib. . The portable electronic device of claim 2, wherein the substrate comprises a heat absorbing end above the heat generating electronic component and a heat radiating end away from the heat generating electronic component, wherein the upper surface of the heat absorbing end is upward The protrusions form three ribs, and the three ribs together form a semi-closed card slot opening toward the insertion opening, and one end of the guiding plate is received and locked in the card slot. The portable electronic device of claim 3, wherein the guiding plate has an "L" shape, and includes a rectangular first plate body and a laterally extending vertical direction from an end of the first plate body. a rectangular second plate body, wherein one end of the guiding plate adjacent to the second plate body is mounted on the guiding rib, and an end of the guiding plate away from the second plate body is received and latched Inside the card slot. The portable electronic device of claim 2, wherein the substrate is provided with a notch on a side of the insertion opening. The portable electronic device of claim 2, wherein the side plate is provided with a cover plate corresponding to sealing the insertion opening. The portable electronic device of any one of the preceding claims, wherein the heat sink comprises a guiding plate, a heat pipe disposed on the guiding plate and a centrifugal fan, and a heat sink fin set at the air outlet of the centrifugal fan. A portable electronic device includes a casing, a heat-generating electronic component, a first heat-dissipating device, and a second heat-dissipating device, wherein the heat-generating electronic component and the first heat-dissipating device are housed in the casing, the first The heat dissipating device is disposed on the heat-generating electronic component, the housing includes a bottom plate and a side plate disposed around a circumference of the bottom plate, and the side plate is provided with an insertion port adjacent to the position where the heat-generating electronic component is located, and the second heat-dissipating device is The insertion port is inserted into the interior of the housing to assist heat dissipation of the heat-generating electronic component or to be pulled out of the housing from the insertion opening. The pluggable heat sink is adapted to be inserted into the portable electronic device from the insertion opening of the portable electronic device The heat-dissipating electronic component in the portable electronic device is heat-dissipating, and the improvement is that the plug-in heat-dissipating device comprises a guiding plate, a heat pipe, a centrifugal fan and a heat-dissipating fin set, wherein the heat pipe and the centrifugal fan are disposed at the On the guiding plate, the heat dissipating fins are disposed at an air outlet of the centrifugal fan, and the pluggable heat dissipating device is guided into the portable electronic device from the insertion port through the guiding plate.