Electronic apparatus
View Patent ↗According to one embodiment, an electronic apparatus includes a housing, a first heating element in the housing, a heat sink in the housing, a first pressing member, a first heat pipe, and a second heat pipe. The first heat pipe has a plate shape, includes a first portion facing the first heating element and a second portion being outside the first heating element. The first heat pipe is configured to be bent by the first pressing member. The second heat pipe is connected to the second portion of the first heat pipe and the heat sink.
1. An electronic apparatus comprising:
a housing;
a circuit board in the housing;
a first heating element on the circuit board;
a heat sink in the housing;
a first pressing member;
a first heat pipe having a substantially flat shape, the first heat pipe comprising a first portion facing the first heating element and a second portion being away from the first heating element and facing the circuit board, wherein the first heat pipe is configured to be deformable towards the first heating element by a force exerted by the first pressing member; and
a second heat pipe comprising a first portion located between the second portion of the first heat pipe and the circuit board and connected to the second portion of the first heat pipe, and a second portion connected to the heat sink.
2. The electronic apparatus of claim 1 , wherein first heating element comprises a first surface facing the circuit board and a second surface located on an opposite side to the first surface and facing the first heat pipe, and
at least a part of the second heat pipe faces a surface of the circuit board on which the first heating element is, and is closer to the circuit board than the second surface of the first heating element.
3. The electronic apparatus of claim 1 ,
wherein the first heat pipe overlapping the first heating element is thinner than the second heat pipe, the first heat pipe having a heat transport capability lower than that of the second heat pipe and being shorter than the second heat pipe, and
the second heat pipe away from the first heating element is thicker than the first heat pipe, the second heat pipe having a heat transport capability higher than that of the first heat pipe and being longer than the first heat pipe.
4. The electronic apparatus of claim 1 , further comprising:
a second heating element on the circuit board; and
a third heat pipe having a substantially flat shape, the third heat pipe comprising a first portion facing the second heating element and a second portion being away from the second heating element and facing the circuit board,
wherein the second heat pipe comprises a third portion located between the second portion of the third heat pipe and the circuit board and connected to the second portion of the third heat pipe.
5. The electronic apparatus of claim 4 , further comprising:
a second pressing member configured to press the third heat pipe,
wherein the third heat pipe is configured to be deformable towards the second heating element by a force exerted by the second pressing member.
6. The electronic apparatus of claim 1 , wherein the second heat pipe is attached to a surface of the first heat pipe facing the first heating element.
7. The electronic apparatus of claim 1 , wherein
the first heat pipe is shorter than the second heat pipe and is of a groove type which has a reduction in a heat transport capability when inclined that is more than a reduction in the heat transfer capability of the second heat pipe, and
the second heat pipe is longer than the first heat pipe and is of a powder type which has a reduction in a heat transfer capability when inclined that is less than a reduction in the heat transfer capability of the first heat pipe when inclined.
8. An electronic apparatus comprising:
a housing;
a circuit board in the housing;
a first heating element on the circuit board;
a second heating element on the circuit board;
a heat sink in the housing;
a pressing member;
a first sub heat pipe having a substantially flat shape, the first sub heat pipe comprising a first portion facing the first heating element and a second portion being away from the first heating element and facing the circuit board, wherein the first sub heat pipe is configured to be deformable towards the first heating element by a force exerted by the first pressing member;
a second sub heat pipe having a substantially flat shape, the second sub heat pipe comprising a first portion facing the second heating element and a second portion being away from the second heating element and facing the circuit board; and
a main heat pipe comprising a first heat receiving portion located between the second portion of the first sub heat pipe and the circuit board and connected to the second portion of the first sub heat pipe, a second heat receiving portion located between the second portion of the second sub heat pipe and the circuit board and connected to the second portion of the second sub heat pipe, and a heat radiating portion connected to the heat sink.