Disk drive device with temperature and humidity control
View Patent ↗Embodiments of the invention provide a disk drive device excellent in reliability that can reduce influence of a temperature change in an environment of use. In one embodiment, a disk drive device includes a disk drive mechanism that records information in a disk or reproduces information stored in the disk and a housing in which the disk drive mechanism is housed. The disk drive device further includes a humidity control element that controls humidity in the inside of the housing, a temperature sensor that detects ambient temperature of the disk drive device or temperature of a portion where temperature changes substantially in the same manner as the ambient temperature, and a control circuit that controls the temperature control element on the basis of a rapid change in temperature detected by the temperature sensor.
1. A disk drive device including a disk drive mechanism that records information in a disk or reproduces information stored in the disk and a housing in which the disk drive mechanism is housed, the disk drive device comprising:
a humidity control element configured to perform a dehumidification and humidification operation within the housing;
a temperature sensor that detects ambient temperature of the disk drive device or a temperature of a portion of the disk drive device where temperature changes in substantially the same manner as the ambient temperature; and
a control circuit that controls the humidity control element on the basis of a rapid change in temperature detected by the temperature sensor.
2. A disk drive device according to claim 1 , wherein the humidity control element is configured to perform dehumidification and humidification of the inside of the housing.
3. A disk drive device according to claim 2 , wherein the humidity control element includes a hydrogen ion conductor consisting of a solid electrolyte and at least two electrodes arranged in contact with the hydrogen ion conductor.
4. A disk drive device according to claim 2 , wherein the control circuit is configured to control the humidity control element when the temperature detected by the temperature sensor is outside a predetermined temperature range.
5. A disk drive device according to claim 1 , wherein the disk drive device has a humidity sensor that detects a humidity in an inner space of the disk drive device and the control circuit is configured to control the humidity control element on the basis of the temperature detected by the temperature sensor and the humidity detected by the humidity sensor.
6. A disk drive device according to claim 5 , wherein the control circuit is configured to control the humidity control element on the basis of the humidity detected by the humidity sensor when the temperature detected by the temperature sensor is within a predetermined temperature range.
7. A disk drive device according to claim 1 , further comprising:
a circuit board mounted with the control circuit and set outside the housing; and
a cover that covers the outside of the circuit board, and in that
the temperature sensor is mounted on the circuit board and held between the circuit board and the cover.
8. A disk drive device according to claim 7 , wherein the humidity control element is configured to perform dehumidification and humidification of the inside of the housing.
9. A disk drive device according to claim 8 , wherein the humidity control element includes a hydrogen ion conductor consisting of a solid electrolyte and at least two electrodes arranged in contact with the hydrogen ion conductor.
10. A disk drive device according to claim 8 , wherein the control circuit is configured to control the humidity control element when the temperature detected by the temperature sensor is outside a predetermined temperature range.
11. A disk drive device according to claim 7 , wherein the disk drive device has a humidity sensor that detects a humidity in an inner space of the disk drive device and the control circuit is configured to control the humidity control element on the basis of the temperature detected by the temperature sensor and the humidity detected by the humidity sensor.
12. A disk drive device according to claim 11 , wherein the control circuit is configured to control the humidity control element on the basis of the humidity detected by the humidity sensor when the temperature detected by the temperature sensor is within a predetermined temperature range.
13. A disk drive device according to claim 1 , wherein the temperature sensor is set in abutment against the housing.
14. A disk drive device according to claim 13 , wherein the humidity control element is configured to perform dehumidification and humidification of the inside of the housing.
15. A disk drive device according to claim 14 , wherein the humidity control element includes a hydrogen ion conductor consisting of a solid electrolyte and at least two electrodes arranged in contact with the hydrogen ion conductor.
16. A disk drive device according to claim 14 , wherein the control circuit is configured to control the humidity control element when the temperature detected by the temperature sensor is outside a predetermined temperature range.
17. A disk drive device according to claim 13 , wherein the disk drive device has a humidity sensor that detects a humidity in an inner space of the disk drive device and the control circuit is configured to control the humidity control element on the basis of the temperature detected by the temperature sensor and the humidity detected by the humidity sensor.
18. A disk drive device according to claim 17 , wherein the control circuit is configured to control the humidity control element on the basis of the humidity detected by the humidity sensor when the temperature detected by the temperature sensor is within a predetermined temperature range.
19. A disk drive device according to claim 1 , further comprising a circuit board mounted with the control circuit and set outside the housing,
wherein the temperature sensor is mounted on the circuit board and held between the circuit board and the housing.
20. A disk drive device according to claim 19 , wherein the humidity control element is configured to perform dehumidification and humidification of the inside of the housing.
21. A disk drive device according to claim 20 , wherein the humidity control element includes a hydrogen ion conductor consisting of a solid electrolyte and at least two electrodes arranged in contact with the hydrogen ion conductor.
22. A disk drive device according to claim 20 , wherein the control circuit is configured to control the humidity control element when the temperature detected by the temperature sensor is outside a predetermined temperature range.
23. A disk drive device according to claim 19 , wherein the disk drive device has a humidity sensor that detects a humidity in an inner space of the disk drive device and the control circuit is configured to control the humidity control element on the basis of the temperature detected by the temperature sensor and the humidity detected by the humidity sensor.
24. A disk drive device according to claim 23 , wherein the control circuit is configured to control the humidity control element on the basis of the humidity detected by the humidity sensor when the temperature detected by the temperature sensor is within a predetermined temperature range.
25. A disk drive device according to claim 1 , wherein the temperature sensor is set to detect temperature of components constituting the disk drive mechanism connected to the housing heat-conductively.