JP2009283064A - Heat radiation structure of enclosure for storage device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat radiation structure of an enclosure for a storage device , which enhances heat radiation by preventing noise generation. <P>SOLUTION: The enclosure 1 houses a plurality of hard disk drives 5 for generating heat. The enclosure 1 includes a housing chamber R1 for housing each of the plurality of hard disk drives 5, a suction hole 3a formed in the bottom part of the enclosure 1 to allow air flow into the enclosure 1, an exhaust hole 4a formed in the top part of the enclosure 1 to discharge the air from the enclosure 1, heat radiation spaces S1 disposed among the plurality of housing chambers R1 and leading to the suction hole 3a and the exhaust hole 4a, and partition walls 8a disposed between the plurality of housing chambers R1 and the heat radiation spaces S1 and made of heat conductive materials having high heat conductivity. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a heat dissipation structure for a storage device housing that radiates heat generated by a hard disk drive or the like housed in the housing.

Conventionally, a storage device such as a hard disk drive generates heat when the hard disk operates. For this reason, the storage device housing housing for housing the hard disk drive is provided with a heat radiation structure for radiating the heat generated by the operation of the hard disk drive.
Conventionally, as a storage device housing that combines design and high heat dissipation, a heat dissipation hole, heat pipe, heat dissipation fin, etc. are provided in a case made of a material such as aluminum with high thermal conductivity. In addition, a fanless structure housing that cools without providing an air cooling fan is known (see, for example, Patent Document 1 and Patent Document 2).

  However, a large-capacity housing for storage systems based on striping technology or mirroring technology realized by combining multiple hard disk drives etc. has high heat generation, so there is an air cooling fan to suppress temperature rise. It has become indispensable.

As what cools a memory | storage device with an air cooling fan, the removable hard disk array apparatus disclosed by patent document 3, for example is known. In the apparatus described in Patent Document 3, an air cooling fan is installed at the upper end of a housing containing a hard disk drive, the air is taken in from the lower portion of the housing, is discharged from the upper portion of the housing, and the cooling airflow is placed in the housing. Is causing the hard disk drive to cool.
JP 2002-344186 A JP 2004-31627 A JP 2006-139468 A

  However, in the heat dissipation structure of the storage device housing case described in Patent Document 3, since an air cooling fan is used, power is consumed to drive the air cooling fan, and reliability such as the life of the air cooling fan is improved. However, there is a problem that the cost increases even if it is increased.

In addition, since the cooling fan generates a cooling airflow by rotating, there is a problem that noise is generated by the rotation of the cooling fan.
When the rotational speed of the air cooling fan is increased in order to increase the heat dissipation effect, the noise increases as the rotational speed increases. In order to suppress the noise of the air cooling fan, the blades of the air cooling fan must be enlarged to rotate at a low speed. However, when the size of the air cooling fan is increased, the space occupied by the air cooling fan is also increased, and there is a problem that the casing is enlarged.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a heat dissipation structure for a storage device housing that eliminates noise and enhances heat dissipation.

  As a means for solving the above problem, the heat dissipation structure of the storage device housing case according to claim 1 is a heat dissipation structure of the storage device housing case in which a plurality of hard disk drives that generate heat are housed in the housing. The housing is formed in a storage chamber for storing the plurality of hard disk drives, an air intake hole formed in a lower portion of the housing and allowing air to flow into the housing, and an upper portion of the housing. An exhaust hole for exhausting air in the housing, a heat dissipating space interposed between the plurality of storage chambers and communicating with the intake holes and the exhaust holes, the plurality of storage chambers and the heat dissipating space, And a partition wall formed by a heat transfer member having good thermal conductivity.

  According to such a configuration, the hard disk drive housed in the housing chamber of the housing generates heat and dissipates heat when operated. The heat is conducted to the partition wall constituting the inner wall of the storage chamber, and is radiated to the heat dissipation space formed by the partition wall. The air in the heat radiating space is heated by exchanging heat with the heat conducted from the hard disk drive, rises in the heat radiating space as a warm air flow, and is discharged into the atmosphere from the exhaust hole. Further, since the air in the heat dissipation space has flowed upward, cold air is sucked into the housing from the air intake holes at the lower portion of the housing, and flows toward the heat dissipation space at the upper portion of the housing. Thus, when heat exchange is performed in the heat dissipation space in the housing, an air flow path is formed in the housing in which the cold air that has flowed from the lower intake holes flows from the lower side to the upper side of the heat dissipation space. As a result, the hard disk drive is efficiently heat-exchanged by natural convection and cooled without generating noise.

  The heat dissipation structure of the storage device housing case according to claim 2 is the heat dissipation structure of the storage device storage case according to claim 1, wherein at least one surface of the hard disk drive has good heat conductivity. It is formed of a heat member, and the heat transfer member is installed in contact with or close to the partition wall.

  According to this configuration, the hard disk drive has a surface formed of a heat transfer member with good thermal conductivity in contact with or close to the partition wall, so that heat generated from the hard disk drive is easily transmitted to the partition wall. Become. Since the partition wall forms a heat radiating space, the heat can be radiated to the heat radiating space to exchange heat.

  The invention of the heat dissipation structure of the storage device housing case according to claim 3 is the heat dissipation structure of the storage device storage housing according to claim 1 or 2, wherein the heat dissipation space and the plurality of storage chambers are The board that is installed along the longitudinal direction of the plurality of hard disk drives and is electrically connected to the plurality of hard disk drives is disposed at a lower portion of the housing in a direction perpendicular to the longitudinal direction of the plurality of hard disk drives. It is characterized by being installed in.

  According to such a configuration, the board is installed in the lower part of the housing in a direction orthogonal to the longitudinal direction of the hard disk drive, so that heat is generated from the electronic components mounted on the board, and the heat is directed upward. The airflow is generated. For this reason, the heat generated from the electronic component can be efficiently exchanged with air to cool the electronic component.

  The invention of the heat dissipation structure of the storage device housing case according to claim 4 is the heat dissipation structure of the storage device storage housing according to any one of claims 1 to 3, wherein the heat dissipation space is: The outer surface of the housing is formed in a concave shape in a cross-sectional view.

  According to such a configuration, the heat radiation space is formed in a concave shape in a cross-sectional view on the outer surface portion of the housing, so that the air in the heat radiation space can freely flow outside the outer surface portion of the housing. And cold air can enter freely. For this reason, the hard disk drive can be efficiently cooled by cooling the air in the heat radiation space.

  The invention of the heat dissipation structure of the storage device storage housing according to claim 5 is the heat dissipation structure of the storage device storage housing according to any one of claims 1 to 4, wherein the storage chamber is: A plurality of continuous arrangements are provided along the left and right inner walls of the casing, and a central portion of the casing has a second heat dissipation space installed along the longitudinal direction of the hard disk drive. It is formed at a plurality of locations on the outer surface portion of the casing between the storage chambers.

  According to such a configuration, the housing is formed with the second heat radiation space in the center portion, and the plurality of heat radiation spaces are formed in the outer surface portion of the housing, thereby improving the cooling capacity for cooling the hard disk drive. be able to.

  The invention of the heat dissipation structure of the storage device housing case according to claim 6 is the heat dissipation structure of the storage device storage housing according to any one of claims 1 to 3, wherein the heat dissipation space is: It extends in the up-down direction in the center part of the said housing | casing, The said storage chamber is installed so that the said thermal radiation space may be enclosed from four directions through the said partition wall.

  According to such a configuration, the heat dissipation space provided in the central portion of the housing can cool the hard disk drive in the storage room installed so as to surround the heat dissipation space from four sides.

  The heat dissipation structure of the storage device housing case according to claim 7 is the heat dissipation structure of the storage device storage case according to claim 1, wherein the housing forms the partition wall forming the heat dissipation space. Further, a heat radiation fin is formed.

  According to such a configuration, the partition wall of the housing has a large surface area due to the radiation fins, and heat dissipation from the partition wall is enhanced. For this reason, heat exchange between the heat and the air in the heat radiation space is also improved, and the hard disk drive can be efficiently cooled.

  According to the heat dissipation structure for a storage device storage housing according to the present invention, it is possible to provide a large-capacity storage device storage housing that is fanless, eliminates noise, saves energy, and increases heat dissipation. it can.

  First, a heat dissipation structure for a storage device housing according to an embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is an exploded perspective view showing a heat dissipation structure of a storage device housing according to an embodiment of the present invention. 2A and 2B are perspective views showing a heat dissipation structure of the storage device housing case according to the embodiment of the present invention, in which FIG. 2A shows a state viewed from diagonally above, and FIG. 2B shows a state viewed from diagonally below. Show. 3A and 3B are diagrams showing a heat dissipation structure of the storage device housing case according to the embodiment of the present invention, in which FIG. 3A is a cross-sectional view in the direction of arrow AA in FIG. 2A and FIG. It is sectional drawing of the arrow BB line of 2 (a). FIG. 4 is a view showing the heat dissipation structure of the storage device housing according to the embodiment of the present invention, and is an enlarged perspective view of the upper case.

The front and rear, right and left directions of the housing 1 change depending on the arrangement state, but for convenience, the side where the heat radiating rib 2a (see FIG. 2B) is formed on the housing 1 (case body 2) shown in FIG. Is described as “rear” (back), the opposite side as “front” (front), and the thickness direction of the hard disk drive 5 as “left and right”.
First, before describing the housing 1, the storage device A1 and the hard disk drive 5 housed in the housing 1 will be described.

<< Configuration of storage device and hard disk drive >>
As shown in FIG. 1, the storage device A1 is a device for storing various data of digital home appliances such as computers such as personal computers, digital cameras, digital video cameras, televisions, and media players. The storage device A1 is, for example, a large-capacity (for example, 2 TB (terabyte)) device suitable for connecting to these digital home appliances and used as a data storage destination, for example, two hard disk drives 52 Is housed in the housing 1. Each hard disk drive 5 includes a housing 5a in which a hard disk or the like is stored, and at least one surface of the housing 5a is formed of a heat transfer member (chassis 5b) having good thermal conductivity.

  The housing 5a includes a chassis 5b made of a metal such as aluminum or steel having high heat dissipation, and a resin cover portion 5c including a connector portion 5d and a wiring board (not shown). The housing 5a is, for example, formed vertically long in the vertical direction, and is formed in a substantially thick plate shape that is rectangular when viewed from the side. Each housing 5a is fitted into each storage chamber R1 of the case body 2 with the chassis 5b side facing the heat radiation space S1 (see FIGS. 3A and 3B), and the upper end portion is positioned in the upper case 4. The protrusion 4h (see FIG. 4) is supported on the inner end surface, and is supported by a cushioning material 41 made of a plurality of plate-shaped vibration-proof rubbers affixed to the ceiling surface of the upper case 4. The connector 5d is mounted on the mating connector 6a mounted on the substrate 6 while being placed on the left and right support portions 9c (see FIGS. 3A and 3B). That is, the hard disk drive 5 is held without shaking by surrounding members. The housing 5a may be further screwed to the case body 2.

The chassis 5b is a member that forms a half of the housing 5a, and includes a metal frame that dissipates heat generated when a hard disk or the like is operated in the housing 5a. When the housing 5a is installed in the storage chamber R1, the chassis 5b is fixed in contact with (or close to) the partition wall 8a on the heat radiation space S1 side of the storage chamber R1 (FIGS. 3A and 3B). )reference). In other words, the hard disk drive 5 is installed so that the chassis 5b, which is a portion with good heat dissipation of the housing 5a, can be easily conducted to the partition member 8 made of a member with high heat dissipation.
The connector portion 5d is, for example, a connection tool for connecting to a power source or the like, and is installed at the lower end portion of the housing 5a.

≪Case structure≫
As shown in FIG. 1, the housing 1 is a housing for housing two (plurality) hard disk drives 5 that generate heat during operation, and is formed by a heat transfer member (for example, aluminum) having good thermal conductivity. Is formed. The housing 1 includes a case main body 2 disposed in the center, a lower case 3 disposed on the lower side of the case main body 2, and an upper case 4 disposed on the upper side of the case main body 2. (See FIGS. 2A and 2B). In addition, the housing 1 includes a storage chamber R1 that stores each hard disk drive 5; a heat dissipation space S1 that forms a flow path for discharging air heated by the hard disk drive 5 and the like in the housing 1; An air intake hole 3a for allowing the air to flow into the housing 1, an air exhaust hole 4a for allowing the heated air in the housing 1 to flow out, and an intervening space between the storage chamber R1 and the heat radiation space S1. A partition wall 8 a of the pair of partition members 8, a support member 9 that supports the hard disk drive 5, and a control circuit board 6 are provided.

≪Case body configuration≫
As shown in FIG. 1, the case body 2 is a substantially cylindrical vertically long member that forms the main part of the housing 1, and accommodates the entire hard disk drive 5. Inside the case main body 2 in plan view, the heat radiation space S1 extends in the front-rear direction at the center, and the storage chamber R1 extends in the front-rear direction at the left and right ends. It is formed (see FIG. 3). The heat radiation space S <b> 1 and the storage chamber R <b> 1 are formed long in the vertical direction, which is the longitudinal direction of the hard disk drive 5. The case body 2 has an uneven portion 2b, an engaging portion 2c, and a threaded portion 2d formed on the inner wall, and a heat radiating rib 2a formed on the rear outer wall. The height of the case body 2 is formed lower than the height of the hard disk drive 5 (see FIG. 3A). For this reason, the hard disk drive 5 installed in the case body 2 of the housing 1 is assembled so that the upper end portion of the hard disk drive 5 protrudes upward from the upper end of the case body 2 when being attached or detached. If the case 4 is removed, the hard disk drive 5 can be easily picked up and removed with a finger and replaced.

  The heat radiating ribs 2a are protrusions formed to increase the external surface area of the case main body 2 and improve the heat radiating effect. For example, a large number of the heat radiating ribs 2a on the outer wall on the rear side of the case main body 2 at appropriate intervals It is extended toward (see FIG. 2B).

  The concavo-convex portion 2b is a portion that forms an airflow through which air flows in the case body 2 heated by radiant heat of the hard disk drive 5 or the electronic component 7 mounted on the substrate 6, and is appropriately spaced in plan view. It is formed in a substantially wave shape (see FIG. 3B). The concavo-convex portion 2 b extends in the vertical direction on the entire front and rear inner walls of the case body 2. The concavo-convex portion 2 b is formed by a convex portion that protrudes toward the inside of the case body 2 and contacts the hard disk drive 5, and a concave groove that is formed in a recessed state on the inner wall of the case body 2 and allows air to flow. (See FIG. 3B). In other words, the convex and concave portions 2b are supported by the convex portions in contact with the side surfaces of the hard disk drive 5, and the heat of the hard disk drive 5 is conducted and dissipated through the entire case body 2, and the concave grooves are formed on the hard disk drive 5 and the like. The flow path which makes the air heated by this flow upward is formed (refer FIG.3 (b)).

  The engaging portion 2c is a portion where both end portions of the two partition members 8 arranged in contact with the surface on the heat radiation space S1 side of the hard disk drive 5 inserted into the case body 2 are engaged and held. Yes (see FIG. 3B). The engaging portion 2c is formed between a pair of protrusions that are provided at two locations on the front and rear inner walls of the case body 2, and includes a groove that extends in the vertical direction.

  The screwing portion 2d has a front end of a fastening member N1 that fastens the lower case 3 to the lower end portion of the case body 2 and a front end portion of the fastening member N2 that fastens the upper case 4 to the upper end portion of the case main body 2. It is a site | part to screw from. The threaded portion 2d is formed in a substantially C-shape (substantially cylindrical) at the tip of the protruding piece that protrudes from the center of the inner wall on the front and rear sides of the case body 2 toward the heat radiation space S1 in plan view. It is extended in the vertical direction.

<< Configuration of partition member >>
As shown in FIG. 1, the partition member 8 includes an inside of the housing 1, two left and right storage chambers R1 in which the hard disk drives 5 are respectively stored, and a heat dissipation space S1 disposed between the two storage chambers R1. It consists of two board | plate materials (heat sink) which form a pair of partition wall 8a for isolate | separating into. As shown in FIG. 3B, each partition member 8 includes a holding portion 8b, a radiating fin 8c, and a counter plate portion 8d, which will be described later, integrally extending in the vertical direction.
The partition member 8 only needs to form two partition walls 8a interposed between the two storage chambers R1 and the heat radiation space S1, and is a partition wall formed integrally with the case body 2. Also good.

As shown in FIG. 3B, the partition wall 8a allows the heat generated in the hard disk drives 5 adjacent to the left and right outer sides of the partition wall 8a to be conducted to the entire partition member 8 so that the partition on the heat radiation space S1 side. This is for radiating heat from the wall surface of the wall 8a to the heat radiation space S1 in the housing 1. Moreover, the partition wall 8a forms a part of the storage chamber R1 and a part of the flow path of the heat radiation space.
The holding portion 8 b is a portion where the partition member 8 is fixed to the case main body 2 by being inserted into engaging portions 2 c formed at four locations on the inner wall of the case main body 2. The holding portion 8b is formed in a stepped shape at both end portions of the partition member 8.

The heat radiating fins 8c are projecting pieces for increasing the surface area on the heat radiating side of the partition member 8 and improving the heat dissipation. The heat radiating fins 8c protrude from the opposing surfaces of the pair of partition members 8 erected in parallel at a predetermined interval at an appropriate interval and extend in the vertical direction along the heat radiating space S1.
The opposing plate portions 8d are provided so as to protrude toward the left and right ends of the opposing surfaces of the pair of partition members 8, and are disposed in a state where the tip portions are close to each other.

≪Lower case configuration≫
As shown in FIG. 1, the lower case 3 is a member that forms a lower part of the housing 1. A substrate 6, a support member 9, and a case main body 2, which will be described later, are fixed to the lower case 3 by two fastening members N1. As shown in FIG. 2, the lower case 3 has an intake hole 3a for taking in air, a power switch 3b for operating the hard disk drive 5 (see FIG. 1), a USB port 3c, a LAN port 3d, Jack 3e is provided. As shown in FIG. 1, on the inner side of the lower case 3, a stepped uneven portion 3 f, a column portion 3 g, a cylindrical portion 3 h, a positioning projection 3 i, and an introduction channel 3 j (see FIG. 3A) , Is formed.

A large number of air intake holes 3a are formed on the left and right side surfaces of the lower case 3 and on the front and rear left and right lower ends thereof so that the atmosphere can easily enter the housing 1 from the front and rear and left and right sides of the lower end portion of the housing 1. The intake hole 3a may be formed by drilling in a lower part of the case body 2.
The stepped uneven portion 3 f is a portion that supports the substrate 6 at a predetermined height and forms the introduction flow path 3 j, and is formed in a large number above the intake holes 3 a on the left and right inner walls of the lower case 3.

The column portion 3g is a portion to which a screw N3 for fixing the substrate 6 to the lower case 3 is screwed, and is formed in a bottomed cylindrical shape.
The cylindrical portion 3h includes a cylindrical protrusion through which a fastening member N1 for fixing the lower case 3 to the case body 2 is inserted. The cylindrical portion 3h also serves as a column that supports the substrate 6 mounted on the upper end of the cylindrical portion 3h at a predetermined height in the lower case 3.
The positioning projections 3 i are projections for positioning when the support member 9 is fitted to the lower opening end of the case body 2, and a plurality of the positioning projections 3 i are provided to project upward from the outer peripheral portion of the support member 9.

  As shown in FIG. 3 (b), the introduction flow path 3j allows air that has entered the bottom of the substrate 6 in the lower case 3 through the air intake holes 3a to flow from the periphery of the substrate 6 to the upper side of the substrate 6 to be described later. This is a flow path for flowing into the heat radiation space S1 through the passage 9b. The introduction flow path 3j is formed by the inner bottom surface, the inner wall surface, and the stepped uneven portion 3f of the lower case 3, and the upper and lower surfaces and the outer peripheral portion of the substrate 6. The air flowing through the introduction flow path 3j enters the lower case 3 from the lower intake hole 3a of the substrate 6, flows through the upper and lower surfaces and the outer periphery of the substrate 6, and is mounted around the substrate 6 or on the substrate 6. The electronic component 7 can be cooled.

<< Substrate structure >>
As shown in FIG. 1, the board 6 is a circuit board for controlling a hard disk drive on which an electronic component 7 such as an electronic element is mounted, and includes a hard disk drive 5, a power switch 3b, a USB port 3c, a LAN port 3d, and The power jack 3e is electrically connected (see FIG. 2B). The substrate 6 is horizontally installed in the lower part of the housing 1 in a direction perpendicular to the longitudinal direction of the hard disk drive 5 and is installed in the vicinity of the upper part of the intake hole 3a (see FIG. 3A).

≪Configuration of support member≫
As shown in FIG. 1, the support member 9 mounts and supports the lower ends of the two hard disk drives 5 facing each other, and communicates air 9b for sending the air on the substrate 6 to the heat radiation space S1. It is a member for forming. The support member 9 is formed with a tunnel portion 9a, a communication passage 9b, a support portion 9c, a fixing hole 9d, and a support piece 9e. The support member 9 has a front and rear end portion mounted on the substrate 6 in a side view, and the tunnel portion 9a at the center portion of the support member 9 protrudes upward so as to straddle the upper surface center portion of the substrate 6. It consists of a substantially thick plate-like member bent into a shape. The support member 9 is interposed between the central portion of the substrate 6 and the two hard disk drives 5 and the partition member 8 when viewed from the front, and maintains the vertical and lateral intervals of these members. . The support member 9 is assembled so as to close the lower side of the cylindrical heat radiation space S <b> 1 formed by the case body 2 and the partition member 8.

  The tunnel portion 9a maintains a distance between the substrate 6 and the hard disk drive 5 and the partition member 8, and has a flow path for allowing the air heated by the electronic component 7 on the substrate 6 to flow into the communication path 9b. It is a site to be formed. The tunnel portion 9a is formed in a tunnel shape so as to communicate with the central portion of the substrate 6 in the left-right direction.

  The communication path 9b is a flow path that guides the heated air in the tunnel portion 9a to flow into the heat radiation space S1. The communication path 9b is composed of a large number of slit-shaped through holes formed in the tunnel portion 9a of the support member 9 in the vertical direction, and is arranged in parallel in three rows in the longitudinal direction (front-rear direction) of the support member 9. Has been.

The support portion 9c is a portion on which the lower end portion on the heat radiation space S1 side of each hard disk drive 5 is placed, and extends horizontally in the front-rear direction near the center of the left and right end portions of the support member 9.
The fixing hole 9d is a hole for inserting a fastening member N1 inserted through the support member 9 sandwiched between the substrate 6 and the case body 2.
The support piece 9e is a part that protrudes toward the heat radiation space S1 in a state of being in contact with the opposing plate portions 8d of the pair of partition members 8, and supports the partition member 8 at a predetermined position.

≪Composition of upper case≫
As shown in FIG. 1, the upper case 4 is a lid that is connected to the upper side of the case body 2 and closes the upper side of the storage chamber R <b> 1, and constitutes the upper part of the housing 1. As shown in FIG. 4, the upper case 4 includes an exhaust hole 4a, an outer peripheral hole 4b, a vertical hole 4c, an inner peripheral hole 4d, a protective projection 4e, an insertion piece 4f, a cylindrical portion 4g, Positioning protrusions 4h are formed.

The exhaust hole 4a is an exhaust port for exhausting air heated in the housing 1 to the atmosphere, and is formed in communication with the heat radiation space S1 and the storage chamber R1 (see FIG. 3A). . The exhaust hole 4a includes an outer peripheral hole 4b, a vertical hole 4c, and an inner peripheral hole 4d.
The outer peripheral hole 4b is a discharge port that discharges hot ascending air that has risen above the storage chamber R1 (see FIG. 3A) from the side surface of the housing 1 to the atmosphere. The outer peripheral hole 4b is formed in the left and right side walls of the upper case 4 and is a slit-like hole that is long in the front-rear direction. The outer peripheral hole 4b is formed in communication with the upper part of the storage chamber R1.

  The vertical hole 4c is a discharge port that discharges hot ascending air that has risen above the heat radiation space S1 (see FIG. 3A) from the upper surface of the housing 1 to the upper side, and is formed long in the front-rear direction. . The vertical hole 4c is a through-hole formed in a substantially rectangular tube shape from the central portion of the upper surface of the upper case 4 toward the lower heat radiation space S1 (see FIG. 3A). The vertical holes 4c are continuously arranged on the upper end surfaces of the pair of partition members 8 in accordance with the heat radiation space S1 (see FIG. 3A). The vertical holes 4 c arranged in this way are arranged so as to form a chimney (flow path) that discharges hot air upward in the housing 1 with the pair of partition members 8.

The inner peripheral hole 4d is a discharge port that discharges the hot ascending air that has risen above the storage chamber R1 into the vertical hole 4c, and includes a horizontal hole formed in the inner wall of the vertical hole 4c (FIG. 3A). reference).
The protective protrusions 4e are a plurality of protrusions arranged in parallel on both sides of the lower end portion in the longitudinal direction in the vertical hole 4c. The protective protrusion 4e is disposed on the upper side of the heat radiating fin 8c to prevent the finger from coming into contact with the heat radiating fin 8c when the finger is put into the vertical hole 4c.
The insertion piece 4f is a portion for projecting toward the heat radiation space S1 in a state of being in contact with the opposing plate portions 8d of the pair of partition members 8 and supporting the partition member 8 at a predetermined position.

The cylindrical portion 4g is a cylindrical protrusion through which a fastening member N2 for fixing the upper case 4 to the case body 2 is inserted (see FIG. 1). When the upper case 4 is assembled to the case main body 2, the cylindrical portion 4 g is matched with the threaded portion 2 d of the case main body 2 (see FIG. 1).
The positioning protrusion 4h is a protrusion that is positioned to engage with the inner edge of the upper opening of the case body 2 when the upper case 4 is attached to the upper opening end of the case body 2 (see FIG. 1). A plurality of positioning protrusions 4 h are provided on the inner edge of the lower opening of the upper case 4 so as to protrude downward.

≪Configuration of storage room≫
As shown in FIG. 1, the storage chamber R1 is a space for storing two hard disk drives 5 one by one. The inner wall of the case body 2, the partition member 8, the substrate 6, the upper case 4, and the like. Is formed by. A gap around the storage chamber R1 formed when the hard disk drive 5 is stored in the storage chamber R1 communicates with the intake hole 3a and the exhaust hole 4a to form an air flow path (see FIG. 3A). ). The storage room R1 is formed along the vertical direction (longitudinal direction) of the hard disk drive 5.

≪Configuration of heat dissipation space≫
As shown in FIG. 1, the heat radiation space S1 described above is interposed between the storage chambers R1 in the housing 1 and communicates with the atmosphere through the intake holes 3a and the exhaust holes 4a (FIG. 3 ( a)). The heat radiation space S <b> 1 forms a pipe line along the vertical direction (longitudinal direction) of the hard disk drive 5 by the inner wall of the case body 2 and the two partition members 8. For this reason, the air heated by the board | substrate 6, the hard disk drive 5, etc. flows in the inside of the thermal radiation space S1 as upward airflow from the downward toward the upper direction.

≪Action≫
Next, the operation of the heat dissipation structure for the storage device housing according to the embodiment of the present invention will be described with reference mainly to FIG. 1 and FIGS. 3 (a) and 3 (b).
As shown in FIG. 1, when the hard disk drive 5 is operated, heat is generated from the hard disk drive 5 and the electronic component 7 mounted on the substrate 6 to be dissipated. The heat radiation is dissipated in all directions from the entire outer periphery of the hard disk drive 5 and the electronic component 7 (see FIG. 1), as indicated by dotted arrows in FIGS.

  At this time, in the hard disk drive 5, since the chassis 5b having high thermal conductivity is in contact with the partition member 8, most of the heat from the hard disk drive 5 is conducted to the partition member 8, and the heat dissipating fins 8c and the partition walls 8a. In addition, heat is radiated (dotted arrow) from the opposing plate portion 8d into the heat radiation space S1. The air in the heat radiation space S1 heated by this heat radiation rises as a warm air current as shown by solid arrows in FIG. 3, and enters the atmosphere above the housing 1 from the vertical hole 4c (exhaust hole 4a). Discharged.

  On the other hand, cold air enters the introduction flow path 3 j of the lower case 3 from the intake hole 3 a below the housing 1. The atmosphere flows upward so as to be attracted to the flow of the updraft, and the substrate 6 flows from the outer peripheral portion to the upper surface of the substrate 6 to cool the substrate 6 and the electronic component 7 (see FIG. 1). Then, it passes through the tunnel portion 9a and the communication passage 9b of the support member 9 at the center of the substrate 6 and enters the lower portion of the heat radiation space S1.

  In this way, in the heat radiation space S1, cold air enters from the lower part, the partition member 8 heated by the heat dissipated from the hard disk drive 5 and the inner wall of the case body 2 are cooled and heat-exchanged and heated air Flows upward and is discharged to the outside.

  Further, as shown in FIG. 3A, the heat of the upper end surface of the hard disk drive 5 is radiated to the upper space of the storage room R1 in the upper case 4, and is heated by exchanging heat with the air in the upper space. To do. The heated air is discharged into the atmosphere from the outer peripheral hole 4b and the inner peripheral hole 4d.

  Further, as shown in FIG. 3B, the outer surface in the front-rear direction and the outer surface in the left-right direction of the hard disk drive 5 are in contact with the convex portions of the concave-convex portions 2 b on the inner wall of the case body 2. For this reason, the heat of the hard disk drive 5 is thermally conducted from the concavo-convex portion 2 b to the entire case body 2 and is radiated from the heat radiation rib 2 a of the case body 2 and the entire outer peripheral surface.

Further, the concave and convex portion 2b is formed with a channel extending in the vertical direction by the space of the concave groove, the heat of the hard disk drive 5 is radiated to the channel, and the internal air is heated by heat exchange. The heated air becomes an ascending current and flows upward in the concave groove of the concavo-convex portion 2b, flows into the upper space of the storage chamber R1 in the upper case 4, and enters the atmosphere from the outer peripheral hole 4b and the inner peripheral hole 4d. Is discharged.
By this air flow, the air on the upper side of the substrate 6 enters the concave groove from the lower end of the concave groove of the concavo-convex portion 2b and flows upward.

  As described above, the heat dissipation structure of the storage device housing according to the embodiment of the present invention allows the atmosphere to enter the housing 1 from the lower intake hole 3a of the housing 1 without using a cooling fan. Then, after the upper and lower surfaces of the substrate 6 are caused to flow and the electronic components 7 on the substrate 6 are cooled, the plurality of hard disk drives 5 are further cooled and discharged from the exhaust holes 4 a on the upper portion of the housing 1. For this reason, it is possible to efficiently cool the internal heat dissipating parts of the housing 1 with energy saving without using an air cooling fan.

Further, inside the housing 1, a flow path is formed in which air flows in from the lower portion of the housing 1 and flows out from the upper portion of the housing 1 into the air, and the electronic component 7 and the hard disk drive 5 itself installed therein are formed. Due to the heat generated, the air in the housing 1 becomes an upward air flow and flows through the flow path.
The housing 1 has storage chambers R1 arranged on the left and right sides of the housing 1, and a heat dissipation space S1 that radiates the heat of the hard disk drive 5 between the left and right storage chambers R1 from the lower end to the upper end. Therefore, a flow path in which the air heated by heat exchange is easy to rise is formed, and the air can be circulated more effectively.
For this reason, the electronic component 7 and the hard disk drive 5 installed in the housing 1 can be efficiently heat-exchanged and cooled.

  The casing 1 forms a rising air flow path and dissipates heat, and the partition members 8 and the heat radiating fins 8c are arranged inside the casing 1 and hardly appear on the outer surface. ing. Further, the housing 1 has a good appearance because the intake holes 3a are formed on the left and right side surfaces of the lower end portion and the exhaust holes 4a are formed on the side surfaces of the upper end portion and inside the upper surface.

[First Modification]
The present invention is not limited to the above-described embodiment, and various modifications and changes can be made within the scope of the technical idea. The present invention extends to these modifications and changes. Of course.

Next, a first modification of the present invention will be described with reference to FIGS.
FIG. 5 is a schematic diagram illustrating a first modification of the heat dissipation structure of the storage device housing according to the embodiment of the present invention, and is an exploded perspective view of the housing and the hard disk drive housed in the housing. 6A is a cross-sectional view in the direction of arrow CC in FIG. 5, and FIG. 6B is a cross-sectional view in the direction of arrow DD in FIG. 5.

Although the said embodiment demonstrated the case where the thermal radiation space S1 was installed in the inside of the housing | casing 1 shown in FIG.3 (b), the thermal radiation space S1 of this invention is not limited to this.
As shown in FIGS. 5 and 6A and 6B, the heat radiation space S10 of the storage device A10 is formed in a concave shape (vertical groove shape) when the outer surface portion 10a of the housing 10 is viewed in cross section. It may be formed to be exposed to the outside by the recess 10h.

In this case, the heat radiating space S10 is bent in a U shape when the outer surface portion 10a is viewed in plan between the left and right storage chambers R10 for storing the hard disk drive 5 which are separately arranged on the left and right in the housing 10. The partition wall 10b and the back wall 10d are formed. The hard disk drive 5 mounted on one substrate 6 makes the outer surface of the chassis 5b adhere to the inner surface side of the partition wall 10b to facilitate heat conduction, and heat is applied to the heat radiation space S10 on the outer surface of the partition wall 10b. To dissipate heat.
Thus, by forming the heat radiation space S10 outside the housing 10, the atmosphere outside the housing 10 directly enters the heat radiation space S10. For this reason, since the atmosphere freely enters and exits the heat radiation space S1, the cooling performance by the heat radiation space S1 is improved, and the heat radiation of the hard disk drive 5 and the heat exchange with the air are favorably performed.

Further, the housing 10 may be provided with a large number of heat radiation holes 10c at the lower part, the central part, and the upper part. Furthermore, a second heat radiation space S11 may be provided between the rear wall 10d of the heat radiation space S10 and the front wall 10e of the housing 10. The rear wall 10d and the front wall 10e forming the second heat radiation space S11 are provided with an intake hole 10f at the lower part and an exhaust hole 10g at the upper part, respectively.
Thus, by forming the second heat radiation space S11 inside the housing 10, the heat radiation of the hard disk drive 5 and the heat exchange with the atmosphere can be further improved.

[Second Modification]
Next, a second modification of the present invention will be described with reference to FIGS.
FIG. 7 is a schematic diagram showing a second modification of the heat dissipation structure of the storage device housing case according to the embodiment of the present invention, and is an exploded perspective view of the housing and the hard disk drive housed in the housing. 8 is a cross-sectional view in the direction of the arrow EE in FIG.

In the first modification, the case 10, the heat radiation space S10, and the hard disk drive 5 have been described so that the longitudinal direction is in the vertical direction (see FIG. 5), but the case of the storage device A20 of the present invention is described. The body 20 is not limited to this.
For example, as shown in FIGS. 7 and 8, the housing 20, the heat radiation space S20, and the hard disk drive 5 may be arranged such that the longitudinal direction is the horizontal direction.
If the housing 20 and the heat radiation space S20 are arranged in this manner, the heat radiation space S20 is formed on the upper side of the outer surface portion 20a of the housing 20 so as to open upward. For this reason, the air heated by heat exchange in the heat radiation space S20 can be raised and flowed easily.

[Third Modification]
Next, a third modification of the present invention will be described with reference to FIGS.
FIG. 9 is a schematic diagram illustrating a third modification of the heat dissipation structure for the storage device housing according to the embodiment of the present invention, and is an exploded perspective view of the housing and the hard disk drive housed in the housing. 10A is a cross-sectional view in the direction of arrow FF in FIG. 9, and FIG. 10B is a cross-sectional view in the direction of arrow GG in FIG. 9.

  The hard disk drive 5 and the storage chambers R1, R10, and R20 described in the embodiment and the first and second modifications are not limited to two, and there may be two or more. Further, the heat radiation spaces S1, S10 of the housings 1, 10, 20 are not limited to one, and may be plural.

  For example, as shown in FIGS. 9 and 10, the housing 30 of the storage device A30 has two storage chambers R30 for storing two hard disk drives 5 on the front side, and two hard disks on the rear side. Two storage chambers R30 for storing the drives 5 are arranged side by side, and four storage chambers R30 for storing a total of four hard disk drives 5 are provided. The four hard disk drives 5 are mounted in two rows on the substrate 6 installed at the lower part of the housing 30.

  The heat radiating space S30 is provided at two locations on the left and right sides by forming, on the left and right outer surface portions 30a of the housing 30, concave portions 30h that are bent in a concave shape (vertical groove shape) when viewed in cross section. The heat radiation space S30 is formed by a partition wall 30b and a back wall 30d that are bent in a U shape when the outer surface portion 30a is viewed in a plan view, between the storage chambers R30 that are separately disposed in the front and rear in the housing 30. The And you may provide 2nd thermal radiation space S31 in the housing | casing 30 between the left and right back walls 30d which form the thermal radiation space S30 on either side.

If formed in this way, the housing 30 can accommodate four hard disk drives 5 and radiate the heat of each hard disk drive 5 from the left and right heat radiation spaces S30, the second heat radiation space S31, and the like.
Each storage chamber R30 is connected to the front and rear of the housing 30 in the left-right direction, and is formed to communicate with the second heat radiation space S31 provided in the central portion of the housing 30. For this reason, the surface on the chassis 5b side of the hard disk drive 5 stored in each storage chamber R30 is arranged in a state where substantially half is exposed to the second heat radiation space S31. Therefore, each hard disk drive 5 can directly radiate heat into the second heat radiating space S31, and the chassis 5b can directly touch the air flowing in the second heat radiating space S31 to cool the air. It is possible to improve.

  In addition, the hard disk drive 5 should just store the number within four pieces in the housing | casing 30 as needed. For example, when three hard disk drives 5 are stored in the storage room R30 of the housing 30, the remaining one storage room R30 can perform the same heat dissipation effect as the second heat dissipation space S31, and the hard disk drive 5 is removed from the air. The cooling effect of cooling with can be further improved.

[Fourth Modification]
Next, a fourth modification of the present invention will be described with reference to FIGS.
FIG. 11 is a schematic diagram illustrating a fourth modification of the heat dissipation structure for the storage device housing according to the embodiment of the present invention, and is an exploded perspective view of the housing and the hard disk drive housed in the housing. 12 is a cross-sectional view in the direction of arrow HH in FIG.

Further, in the storage device A40, when the four hard disk drives 5 are stored in the storage room R40 of the housing 40, for example, as shown in FIGS. 11 and 12, a heat radiation space S40 is provided in the central portion of the housing 40. Then, the four storage chambers R40 may be installed so as to surround the heat dissipation space S40 from four directions, front, rear, left and right.
Even when the housing 40, the storage room R40, and the heat radiation space S40 are formed in this way, as shown in FIG. 12, the air that is radiated and heated from the hard disk drive 5 into the heat radiation space S40 is heated from the lower part of the heat radiation space S40. Since it flows toward the upper part, the hard disk drive 5 can be cooled well.

It is a disassembled perspective view which shows the thermal radiation structure of the memory | storage device storage housing | casing which concerns on embodiment of this invention. It is a perspective view which shows the thermal radiation structure of the memory | storage device storage housing | casing which concerns on embodiment of this invention, (a) shows the state seen from diagonally upward, (b) shows the state seen from diagonally downward. It is a figure which shows the thermal radiation structure of the memory | storage device storage housing | casing which concerns on embodiment of this invention, (a) is sectional drawing of the arrow AA direction of Fig.2 (a), (b) is FIG.2 (a). It is sectional drawing of an arrow BB line BB direction. It is a figure which shows the thermal radiation structure of the memory | storage device storage housing | casing which concerns on embodiment of this invention, and is an expansion perspective view of an upper case. It is the schematic which shows the 1st modification of the thermal radiation structure of the memory | storage device storage housing | casing which concerns on embodiment of this invention, and is a disassembled perspective view of the hard disk drive accommodated in a housing | casing and a housing | casing. (A) is sectional drawing of the arrow line CC direction of FIG. 5, (b) is sectional drawing of the arrow line DD direction of FIG. It is the schematic which shows the 2nd modification of the thermal radiation structure of the memory | storage device storage housing | casing which concerns on embodiment of this invention, and is a disassembled perspective view of the hard disk drive accommodated in a housing | casing and a housing | casing. It is sectional drawing of the arrow EE direction of FIG. It is the schematic which shows the 3rd modification of the thermal radiation structure of the memory | storage device storage housing | casing which concerns on embodiment of this invention, and is a disassembled perspective view of the hard disk drive accommodated in a housing | casing and a housing | casing. (A) is sectional drawing of the arrow FF direction of FIG. 9, (b) is sectional drawing of the arrow GG direction of FIG. It is the schematic which shows the 4th modification of the thermal radiation structure of the memory | storage device storage housing | casing which concerns on embodiment of this invention, and is a disassembled perspective view of the hard disk drive accommodated in a housing | casing and a housing | casing. It is sectional drawing of the arrow line HH direction of FIG.

Explanation of symbols

1, 10, 20, 30, 40 Case 2 Case body 3 Lower case 3a, 10f Intake hole 4 Upper case 4a, 10g Exhaust hole 5 Hard disk drive 5b Chassis (heat transfer member)
6 Substrate 8 Partition member 8a, 10b, 30b, 40b Partition wall 8c Radiation fin 10a, 20a, 30a Outer surface part A1, A10, A20, A30, A40 Storage device R1, R10, R20, R30, R40 Storage chamber S1, S10, S20, S30, S40 Heat radiation space S11, S31 Second heat radiation space

Claims (7)

A heat dissipation structure of a storage device housing case in which a plurality of hard disk drives that generate heat are housed in a housing,
The housing includes storage rooms for storing the plurality of hard disk drives, respectively.
An air intake hole formed in the lower part of the housing for allowing air to flow into the housing;
An exhaust hole formed in the upper part of the casing for discharging air in the casing;
A heat dissipating space interposed between the plurality of storage chambers and communicating with the intake holes and the exhaust holes;
A partition wall interposed between the plurality of storage chambers and the heat radiation space and formed by a heat transfer member having good thermal conductivity;
A heat dissipation structure for a storage device housing case, comprising:   2. The memory according to claim 1, wherein at least one surface of the hard disk drive is formed of a heat transfer member having good thermal conductivity, and the heat transfer member is installed in contact with or close to the partition wall. Heat dissipation structure for device housing. The heat dissipation space and the plurality of storage chambers are installed along a longitudinal direction of the plurality of hard disk drives,
2. The board that is electrically connected to the plurality of hard disk drives is disposed at a lower portion of the housing in a direction orthogonal to a longitudinal direction of the plurality of hard disk drives. Item 3. A heat dissipation structure of a storage device housing case according to Item 2.   4. The heat dissipation of the storage device housing case according to claim 1, wherein the heat radiation space is formed in a concave shape in a cross-sectional view on an outer surface portion of the housing. 5. Construction. A plurality of the storage chambers are provided continuously along the left and right inner walls of the housing,
In the central part of the housing has a second heat dissipation space installed along the longitudinal direction of the hard disk drive,
5. The storage device housing case according to claim 1, wherein the heat radiation space is formed at a plurality of locations on the outer surface portion of the housing between the housing chambers. Heat dissipation structure. The heat dissipation space is extended in the vertical direction at the center of the housing,
4. The storage device housing case according to claim 1, wherein the storage chamber is installed so as to surround the heat dissipation space from four sides through the partition wall. 5. Heat dissipation structure.   The heat dissipation structure for a storage device housing casing according to claim 1, wherein the casing is formed with a heat dissipation fin on the partition wall forming the heat dissipation space.

Images