1. An electronic apparatus comprising:
a housing;
a circuit board section accommodated in the housing, which includes a heat generating component, a heat receiving region thermally connected to the heat generating component, and a heat radiating region having a lower temperature than the heat receiving region while the apparatus is operating; and
a heat transfer member which includes a first end portion attached in the heat receiving region and a second end portion attached in the heat radiating region.
2. The electronic apparatus according to claim 1, wherein the circuit board section includes a circuit board on which the heat generating component is mounted and which includes both the heat receiving region and the heat radiating region, and
the heat transfer member is provided in the circuit board.
3. The electronic apparatus according to claim 2, wherein the circuit board section includes a circuit component which generates a smaller calorific value than the heat generating component and which is mounted in the heat radiating region.
4. The electronic apparatus according to claim 3, wherein the first end portion of the heat transfer member is attached to a surface on which the heat generating component is mounted.
5. The electronic apparatus according to claim 4, wherein the circuit board includes: (i) a board main body; (ii) a conductor layer which is provided in each of the heat receiving region and the heat radiating region and is exposed outside the circuit board to contact the heat transfer member; (iii) another conductor layer which is provided in the board main body; and (iv) a via hole through which this conductor layer is thermally connected to the conductor layer which is exposed to the outside.
6. The electronic apparatus according to claim 1, wherein the circuit board section includes: a first circuit board on which the heat generating component is mounted and which includes the heat receiving region; and a second circuit board which includes the heat radiating region, and
the heat transfer member is provided to extend from the first circuit board to the second circuit board.
7. The electronic apparatus according to claim 6, wherein the circuit board section includes a circuit component which generates a smaller calorific value than the heat generating component and which is mounted in the heat radiating region.
8. The electronic apparatus according to claim 7, wherein the first end portion of the heat transfer member is attached to a surface on which the heat generating component is mounted.
9. The electronic apparatus according to claim 8, wherein the circuit board section includes: (i) a board main body; (ii) a conductor layer which is provided in each of the heat receiving region and the heat radiating region and is exposed outside the circuit board section to contact the heat transfer member; (iii) another conductor layer which is provided in the board main body; and (iv) a via hole through which this conductor layer is thermally connected to the conductor layer which is exposed to the outside.
10. The electronic apparatus according to claim 1, wherein the circuit board section includes a circuit component which generates a smaller calorific value than the heat generating component and which is mounted in the heat radiating region.
11. The electronic apparatus according to claim 1, wherein the first end portion of the heat transfer member is attached to a surface on which the heat generating component is mounted.
12. The electronic apparatus according to claim 1, wherein the circuit board section includes a conductor layer which is provided in each of the heat receiving region and the heat radiating region, said conductor layer being exposed outside the circuit board section, covered with the first or second end portion of the heat transfer member and thermally connected to the heat transfer member.
13. The electronic apparatus according to claim 12, wherein the circuit bard section includes: a board main body; another conductor layer which is provided in the board main body; and a via hole through which this conductor layer is thermally connected to the conductor layer which is exposed to the outside.
14. The electronic apparatus according to claim 13, wherein said another conductor layer is a ground layer.
15. The electronic apparatus according to claim 1, wherein the circuit board section includes a flexible circuit board on which the heat generating component is mounted and which includes at least the heat receiving region, and
at least the first end portion of the heat transfer component is attached to the flexible circuit board.
16. A circuit board unit comprising:
a circuit board section which includes a heat generating component, a heat receiving region thermally connected to the heat generating component, and a heat radiating region having a lower temperature than the heat receiving region while the unit is operating; and
a heat transfer member which includes a first end portion attached in the heat receiving region and a second end portion attached in the heat radiating region.
17. The circuit board unit according to claim 16, wherein the circuit board section includes a circuit board on which the heat generating component is mounted and which includes both the heat receiving region and the heat radiating region, and
the heat transfer member is provided in the circuit board.
18. The circuit board unit according to claim 16, wherein the circuit board section includes: a first circuit board on which the heat generating component is mounted and which includes the heat receiving region; and a second circuit board which includes the heat radiating region, and
the heat transfer member is provided to extend from the first circuit board to the second circuit board.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. Spring (4) comprising two branches (41, 42) connected by a bend (40) such that the branches form, in the idle position, an acute angle, said branches being elastically mobile in relation to each other by relative pivoting around the bend until they come into contact with each other so as to be extended relatively in parallel, characterised in that it comprises spring stiffness variation means (43, 44) which produce different stiffnesses depending on whether the spring is compressed or slackened, said variation means producing a low stiffness when the branches are extended relatively in parallel and a greater stiffness when the branches are forced together from the idle position.
2. Spring according to claim 1, wherein the spring stiffness variation means comprise locking means preventing the branches from being returned to a relatively parallel position from the idle position.
3. Spring according to claim 1, wherein the branches (41, 42) are elastically deformable.
4. Spring according to claim 2, wherein the variation means (43) are elastically deformable.
5. Spring according to claim 1, wherein the variation means comprise a tab (43) attached to a so-called first branch (41) and extending between the two branches to the other so-called second branch (42), said tab (43) comprising one free end (431) and one end connected to the first branch, said second branch (42) comprising a stop housing (44) intended to receive the free end (431) of the tab, said free end (431) being locked at a stop in the housing (44) when the two branches are forced against each other, thus preventing the branches from being brought against each other by pivoting around the bend.
6. Spring according to claim 5, wherein the tab (43) extends with its free end (431) oriented approximately towards the bend (40), the free end of the tab being located between the stop housing (44) and the bend (40) when the branches are relatively parallel.
7. Spring according to claim 5, wherein the tab (43) extends with its free end (431) oriented relatively towards the free ends of the branches, the free end (431) of the tab (43) being located between the stop housing (44) and the free ends of the tabs when the branches are relatively parallel.
8. Spring according to claim 5, wherein the first branch (41) forms a window (430) wherein the tab (43) is housed by elastic deformation when the two branches are extended relatively parallel.
9. Spring according to claim 5, wherein the tab (43) extends so that its free end (431) is automatically housed and remains locked in the stop housing (44) of the second branch (42) when the two branches are compressed against each other.
10. Spring according to claim 1, produced by plastic moulding.
11. Fluid product dispenser comprising:
a reservoir (3) containing said fluid product and equipped with at least one actuating wall (10) on which pressure is exerted to reduce the volume of the reservoir,
a dispensing outlet (50) through which the fluid product is dispensed,
characterised in that the reservoir (3) contains a spring (4) according to any of the above claims.
12. Dispenser according to claim 11, wherein a removable sealing component (12) seals the dispensing outlet (50) and thus isolates the reservoir (3) from the outside, the spring (4) being compressed so as to occupy a minimum volume when the sealing component seals the dispensing outlet.
13. Dispenser according to claim 12, wherein the spring (4) is slackened to increase the volume of the reservoir as soon as to sealing component is removed by admitting gas into the reservoir via the dispensing outlet.