摘要:
An optical pickup, having an optical pickup housing made of resin, for maintaining the heat radiation performance or capacity of a semiconductor laser, also an objective lens driving mechanism, and further a driver IC for the semiconductor laser, while keeping small-size and light-weight thereof, comprises a pickup housing, in which an optical part and a semiconductor laser are fixed; an objective lens, which is attached within the pickup housing; and an objective lens driving mechanism, which is configured to drive the objective lens, further comprising: a metal-made bottom cover, which is configured to cover a lower surface of the pickup housing and a side surface of an inner periphery of an optical disc, wherein the metal-made bottom cover and the semiconductor laser are thermally connected with each other.
摘要:
The present invention relates to a system and method for controlling air conditioning facilities, and a system and method for power management of a computer room. In an air-conditioning facility control system of a computer room (cooling room) equipped with air-conditioning facilities for air-cooling the computer room in which a large number of information processing units are installed, an air-conditioner monitoring and controlling unit calculates a temperature sensitivity coefficient of each information processing unit, and that of each air conditioner, and then determines discharge air temperature of each air conditioner by use of the temperature sensitivity coefficients in such a manner that the sum of squares of a deviation of a change in discharge air temperature of each information processing unit becomes the smallest, and in such a manner that the sum total of the power consumption of the individual air conditioners becomes the smallest.
摘要:
A knee airbag device for a vehicle is provided that is capable of effectively protecting both knees of a seat occupant, regardless of position, shape or the like of an airbag door relative to the seat. In a passenger seat knee airbag device, a tear line of an airbag door retainer is broken and airbag doors are deployed upward and downward by deployment force of a knee airbag that receives a gas supply from an inflator. Thus, the knee airbag is deployed toward the knees of the occupant through an aperture portion formed in the airbag door retainer. A tear line of a form that is non-symmetrical between left and right is formed in a retaining sheet that is for retaining the knee airbag in a folded state. Thus, timings of deployment of the airbag doors by inflation pressure of the knee airbag are caused to differ between a left side portion and a right side portion.
摘要:
A disk array apparatus includes a plurality of disk drives arranged in at least one disk drive line in a direction of an airflow, at least one shield plate, a housing containing the disk drives and the at least one shield plate therein, and flow passages arranged between an upper surface of the disk drives and an inner wall of the housing for enabling the airflow to pass through. The at least one shield plate is arranged between at least two of the disk drives of the at least one disk drive line for controlling the airflow on a downstream side of the flow passages.
摘要:
A disk array system includes a plurality of disk drives and at least one unit box including the plurality of disk drives aligned in the thickness direction of the disk drive, each disk drive including a thin case accommodating a recording disk, a read/write head, and a driving mechanism for driving the recording disk and the read/write head, and a control board for controlling the driving mechanism, the control board being mounted on the thin case. In the disk array system, the thin case and the unit box are composed of a thermally-conductive material, the unit box includes surfaces parallel to the thickness direction of the plurality of disk drives, and at least one of the surfaces has a cold plate filled with a refrigerant. Heat generated at the disk drives is transferred to the cold plate, thereby improving cooling performance.
摘要:
Provided is a disk array device or an electronic device having an enhanced cooling performance with lower noises. The disk array device has doors in the front side and in the rear side of the device, each of the doors is formed with outside openings which are louver-like or bend-like, the louver- or bend-like openings in the doors being directed in directions which are opposite to each other between the door on the suction side and the door on the exhaust side.
摘要:
It is an object to provide a cooling device for optimally cooling a semiconductor device on a CPU blade which is detachable with respect to an electronic apparatus using the cooling device with compact structure for reducing power consumption. A cooling device for cooling a semiconductor device disposed on an electronic circuit substrate in a casing of an electronic apparatus, comprising a first cooling unit comprising a first heat absorbing portion and a first heat releasing portion, and a second cooling unit comprising a second heat absorbing portion and a second heat releasing portion, wherein the first heat absorbing portion is disposed in contact with the semiconductor device, the second heat absorbing portion is detachably disposed in contact with the first heat releasing portion, a phase-change refrigerant is contained in the first cooling unit, and the second heat releasing portion is disposed outside the casing.
摘要:
A disk array apparatus including a rack-shaped basic frame, and a plurality of disk boxes that can be inserted into and pulled out of the basic frame depth-wise. Each disk box has: disk drive connectors for connecting a plurality of disk drives arranged in a matrix on a platter substrate, which is the bottom face of the disk box, roughly parallel to the depth direction of the basic frame; and a cooling module for cooling the disk drives. The disk box is a hermetically sealed structure.
摘要:
In a disk array apparatus according to an aspect of the invention, temperatures of disk drives arranged in a casing are equalized to reduce a noise. A disk array apparatus 50 comprises plural disk drives 2, fans 5, and a casing 1. The disk drives 2 are arranged in an array, the fans 5 are provided on one end side of rows of the disk drives, and the casing 1 accommodates the disk drives 2 and the fans 5. Air which has already cooled the disk drives flows through an air duct 10. A sub-fan 6 exhausts the air flowing through the air duct to the outside of the casing 1. A nozzle 11 is arranged in a front end portion of the air duct. One end portion of the nozzle 11 is arranged between the disk drives.
摘要:
A disk array apparatus comprises a casing, a disk drive group configured by a plurality of disk drives, a controller unit configured by a plurality of circuit substrates, a plurality of cooling fans, and backflow prevention members. The plurality of cooling fans is provided so as to be aligned between the disk drive group and the controller unit in the casing. The backflow prevention members are provided so as to protrude on the side of the disk drive group or on the side of the controller unit from between the cooling fans while extending to define a space on the inlet side or the outlet side of the cooling fans.