JP2002280780A - Integrated circuit cooling unit and its fan holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the work efficiency from being lowered by the lead wire of a fan at the time of packaging an integrated circuit cooling unit or at the time of assembling an electronic apparatus after incorporating the cooling unit while preventing the quality from being lowered due to damage of the lead wire of a fan at the time of transporting the integrated circuit cooling unit, and to lessen the burden of management in the manufacturing line by an arrangement wherein a plurality of types of apparatus having different positional relations between the fan and the connector of lead wire can be dealt with by one type of product having the lead wire of a fan of the same length with regard to the integrated circuit cooling unit. SOLUTION: On the surface of the fan holder 3 of a CPU cooling unit 1 connected with the substrate 21 of a heat sink 2 arranged on a CPU 8 fixed to a socket 7 and holding a fan 4 above fins 22 on the upper surface of the substrate 21, one or a plurality of grooves 322 being fitted partially with the lead wire 41 of the fan 4 and restricting the lead wire 41 is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an integrated circuit cooling unit used for cooling an integrated circuit such as a CPU in electronic equipment such as a personal computer, and a fan holder of the unit.

[0002]

2. Description of the Related Art For example, a CP of a personal computer
As a device for cooling U, a heat sink provided on a CPU provided with a substrate and a plurality of fins provided on the upper surface of the substrate and attached to a socket; a fan holder connected to an edge of the substrate of the heat sink; There is known a CPU cooling unit including a fan which is held by a holder at a position above a fin on the upper surface of a substrate or at one of front, rear, left and right sides.

[0003]

In the case of the above-described CPU cooling unit, it is usual that the fan is packed and transported in a cardboard case or the like in a free state in which the lead wire of the fan is not fixed anywhere. Therefore, when packing, the lead wire of the fan may be caught on the packing material, and the packing operation may not be performed efficiently. In addition, during transportation, the lead wire of the fan in a free state may move and be detached from the fan or disconnected.

The CPU cooling unit is then mounted on a socket on a motherboard, for example, in a computer assembly factory. Thereafter, when installing other components around the unit, the fan lead wires hinder the CPU cooling unit. As a result, there is a possibility that the efficiency of the assembling operation is reduced.

Further, the tip of the fan lead wire is connected to a connector provided on a motherboard or a power supply unit. The positional relationship between the fan and the connector varies depending on the type of personal computer. It is. Therefore, in order to support multiple models with different positional relationships between the fan and its lead wire connector,
It was necessary to prepare several types of products with different fan lead wire lengths. However, preparing such a variety of products has a problem that management in a product line is complicated.

SUMMARY OF THE INVENTION It is an object of the present invention to prevent a reduction in work efficiency due to a fan lead wire when packing an integrated circuit cooling unit or assembling an electronic device after the cooling unit is assembled, and to transport the integrated circuit cooling unit. An object of the present invention is to prevent the lead wire of the fan from being damaged at the time or the like, thereby causing deterioration in quality.

Another object of the present invention is to provide a plurality of types of integrated circuit cooling units in which the positional relationship between the fan and the connector of the lead differs depending on the type of product having the same length of the lead of the fan. To reduce the management burden on the production line.

[0008]

SUMMARY OF THE INVENTION A fan holder of an integrated circuit cooling unit according to the present invention is connected to a substrate of a heat sink disposed on an integrated circuit mounted on a socket, and has a fin on an upper surface of the substrate. The fan is held at the upper position or at one of the front, rear, left and right sides, and one or more grooves are provided on the surface of the fan so that the lead wires of the fan can be partially fitted and restrained. Features.

In the fan holder, since a groove is provided on the surface of the fan holder so that the lead wire of the fan can be partially fitted and restrained, the integrated circuit cooling device including the fan holder, the fan and the heat sink is provided. When the unit is packed in a cardboard case or the like, the lead wire of the fan is partially fitted into the groove in advance and restrained, so that there is no possibility that the lead wire is caught by the packing material and the packing operation is hindered. Then, even when transporting the integrated circuit cooling unit, since the lead wire of the fan is partially fitted into the groove on the surface of the fan holder and remains restrained,
There is no danger that the lead wire will move and become disconnected from the fan or break, and the quality will not be impaired.

Further, according to the fan holder, as for the fan to be attached to the heat sink by this, only one kind having the same lead wire length is prepared, and the fan and the connector of the lead wire are prepared. And a plurality of types of electronic devices having different positional relationships with each other, and the management burden on the product line can be reduced. Specifically, first, the length of the lead wire is set to be compatible with the electronic device in which the distance between the fan and the connector of the lead wire is the longest. If the integrated circuit cooling unit is to be incorporated into, for example, the device in which the distance between the fan and its lead wire connector is the longest, the fan lead wire is connected to the connector without fitting into the groove of the fan holder. Alternatively, when a plurality of grooves are provided in the fan holder, the fan holder may be connected to the connector in a state where lead wires are fitted into some of the grooves. On the other hand, when the integrated circuit cooling unit is incorporated into a device in which the distance between the fan and the connector of the lead wire is shorter than the above device, the state in which the lead wire of the fan is fitted in all the grooves of the fan holder (the plurality of grooves is formed). When it is provided, it may be connected to the connector in a state where a lead wire is inserted into a part of the groove as necessary. in this case,
By changing the direction of insertion of the lead wire into the groove, it is possible to cope with a plurality of devices having different distances between the fan and the connector of the lead wire.

[0011] In the fan holder of the integrated circuit cooling unit according to the present invention, a plurality of grooves which can partially fit and restrain the lead wires of the fan are preferably provided on the surface of the fan holder. If there are a plurality of the grooves, more parts of the fan lead wires can be fitted and restrained, so that the work efficiency at the time of packing the integrated circuit cooling unit or assembling the electronic equipment can be further improved. In addition, it is possible to prevent the damage to the fan lead wires with a higher probability when the integrated circuit cooling unit is transported. Moreover, by providing a plurality of the grooves, one kind of integrated circuit cooling unit having the same length of the lead wire of the fan allows more kinds of electronic circuits in which the positional relationship between the fan and the connector of the lead wire is different. It becomes possible to correspond to the device. The arrangement of the grooves in the case of providing a plurality of the grooves is not particularly limited. For example, the grooves may be arranged in parallel on a continuous surface portion of the fan holder. When a plurality of grooves are arranged in parallel, it is possible to restrain the fan lead wires as a whole, for example, in a meandering shape.
The shape of the groove is not particularly limited as long as it can partially fit and restrain the lead wire of the fan. For example, the groove is formed by a U-shaped groove or a C-shaped or T-shaped internal enlarged groove. In the case of a U-shaped groove, the middle part of the length may be a groove width capable of restraining the lead wire, and the groove width of both sides may be gradually increased toward both ends.

The material of the fan holder according to the present invention includes:
Although not particularly limited, it is usually formed of a synthetic resin or metal. The basic structure of the fan holder according to the present invention is not particularly limited as long as the fan holder can be connected to the substrate of the heat sink and can hold the fan at a position above the fins on the upper surface of the substrate or at any of the front, rear, left, and right sides. Further, the location where the groove is provided is not particularly limited as long as the location on the surface of the fan holder is such that the lead wire of the fan held by the fan holder can be partially fitted and restrained. It can be configured as follows.

That is, the fan holder of the integrated circuit cooling unit according to the present invention has a fan-like shape in which the two front and rear fan mounting portions on which the fans are laid are connected and the right and left ends of the front and rear fan mounting portions are connected to each other. Left and right two connecting hanging portions each having a connecting portion connected to the substrate edge of the heat sink, and a fan upper surface extending upward from the upper ends of the left and right hanging portions along the left and right side surfaces of the fan. And two right and left fan holding portions having an engaging portion that engages with the left and right edges of the front and rear fans. In some cases, one or more of the left and right fan holding portions are provided on the surface of at least one of the left and right fan holding portions. In this case, the groove is usually provided on the surface of one of the connection hanging portions and / or the fan holding portion that will be located between the base end of the fan lead wire and the lead wire connector. Since the positional relationship between the base end of the wire and the connector may differ depending on the model, it is preferably provided on both the left and right connection hanging parts and / or the surface of the fan holding part. In addition, regarding the front and rear fan mounting portions, when there is a portion that protrudes outside the fan in a state where the fan is mounted over the
A groove can be provided on the upper surface of the same portion.

Further, the fan holder of the integrated circuit cooling unit according to the present invention has a substantially rectangular frame-shaped fan holding portion in which the peripheral portion of the fan is overlapped on the upper surface or the lower surface, and four edge portions of the fan holding portion. Two opposing edges or 4
A connection hanging portion extending downward from the corner portion and having a connection portion connected to the substrate edge of the heat sink at the end, and a groove capable of partially fitting and restraining a lead wire of the fan; And at least one of the hanging parts may be provided on the surface of at least one of the parts. In this case, the means for fixing the fan to the fan holding portion is not particularly limited. However, since bolt insertion holes are usually formed at the four corners of the fan, corresponding bolt insertion holes are formed in the fan holding portion. In general, means for bolting the two at the corners is used.

Further, the fan holder of the integrated circuit cooling unit according to the present invention comprises two left and right fan holder halves, wherein the left and right fan holder halves have a fan holding portion for holding the left and right edges of the fan, and a fan holding portion. And a connection hanging portion having a connection portion connected to an edge of the substrate of the heat sink at a tip end of the left and right fan. In some cases, one or more of the fan holding portion and the connection hanging portion of the holder half are provided on the surface of at least one of the portions.

The fan holder of the integrated circuit cooling unit according to the present invention comprises a rectangular upper wall portion disposed above the fin of the heat sink, a heat sink substrate extending downward from front and rear edges or left and right edges of the upper wall portion, and a lower edge. Two front and rear or left and right connection hanging wall portions having connection portions connected to the front and rear edge portions or the left and right edge portions, and the upper and lower end portions of the same one side edge of the two connection hanging wall portions, and 4 of fans
And four fan mounting portions to which corners are mounted, wherein at least one of the upper wall portion, the two hanging wall portions, and the four fan mounting portions has a groove capable of partially fitting and restraining a fan lead wire. In some cases, one or a plurality of parts are provided on the surface of one part.

Further, according to the present invention, there is provided a heat sink provided with a substrate and fins provided on the upper surface of the substrate and disposed on an integrated circuit mounted on a socket, and connected to the substrate of the heat sink. And a fan held by the fan holder at a position above the fins of the heat sink or at any of front, rear, right and left sides, and a fan lead wire is partially inserted into a groove provided on the surface of the gantry. And an integrated circuit cooling unit characterized in that the integrated circuit cooling unit is adapted to be fitted into and constrained.

According to the above-mentioned integrated circuit cooling unit, when packing it in a cardboard case or the like, the lead wire of the fan is partially fitted into the groove on the surface of the fan holder in advance and restrained, so that the lead wire is The packing work is not hindered from being hindered by the packing material, and the lead wires do not move or become disconnected from the fan during transportation or the like, and there is no risk of quality loss. Further, according to the integrated circuit cooling unit, only one kind of fan having the same lead wire length is prepared, and a plurality of kinds of different positional relationships between the fan and the connector of the lead wire are provided. It can be compatible with electronic devices, which reduces the management burden on the product line.

[0019]

1 to 3 show an embodiment of the present invention. In this embodiment, the present invention is applied to a CPU cooling unit for cooling a CPU of a personal computer. In the following description,
“Front” means the right side of FIG. 3, “rear” means the left side of FIG. 3, and “left and right” means the left and right as viewed from the front.

As shown in FIGS. 1 and 2, the CPU cooling unit (1) includes a substrate (21) and a plurality of CPU cooling units (1) provided on the upper surface of the substrate (21) at equal intervals in the left-right direction in each of two rows. C with fins (22) and attached to socket (7)
A heat sink (2) arranged on the PU (8), a fan holder (3) connected to a substrate (21) of the heat sink (2),
Fins (22) on heat sink (2) by fan holder (3)
And a fan (4) held at a position above the fan.

The heat sink (2) is formed of an extruded aluminum part (not shown) having a substrate part and two front and rear rows of fin-shaped fin forming parts provided on the upper surface side of the substrate part. The tongue-shaped fin (22) is formed by shaving with a cutting tool or the like. As shown in FIG. 2, each fin (22) is provided with a slit (221) from the upper edge of the width center to the middle of the height. This slit (221)
The fin (22) is formed at the same time as the fin (22) is cut and formed by forming a groove having a depth shorter than the height of the cut portion in the center of the width of the cut portion of the extruded aluminum material. substrate
(21) A clip arrangement groove (211) extending from the left edge to the right edge is formed in the center of the upper surface in the front-rear width. At the front and rear edges of the lower surface of the substrate (21), there are formed fan holder connection grooves (212) extending from the left edge to the right edge.

The fan holder (3) connects the two front and rear fan mounting portions (31) on which the fan (4) is mounted across and the right and left ends of the front and rear fan mounting portions (31). Right and left two connection hanging parts (32) having a connecting part (321) provided in a hanging shape and connected to the edge of the substrate (21) of the heat sink (2) at the tip, and upper ends of the left and right hanging parts (32) The fan (4) extends upward along the left and right sides of the fan (4) and at the tip
Left and right 2 having an engaging portion (331) for engaging the left and right edges of the upper surface
And two fan holders (33). A plurality of grooves (322) are provided on the surface of the left hanging portion (32) so that the lead wires (41) of the fan (4) can be partially fitted and restrained.
The front and rear fan mounting portions (31) are plate-shaped having an outwardly convex arc shape when viewed from a plane. Left and right hanging parts (32) are heat sinks (2)
It has a width substantially equal to the front-rear width of the substrate (21), and has a vertical plate-like shape with a lower edge side cut out in a triangular shape. The connecting portion (321) is provided on the back surface of the lower two front and rear ends of the hanging portion (32), and is fitted into the left and right ends of the two front and rear fan holder connecting grooves (212) formed on the lower surface of the substrate (21). Consists of inwardly convex nails. On the rear surface of the left hanging part (32), there are provided four ridges (323) having a rectangular cross section extending in the vertical direction at a predetermined interval, and the opposing surface of the adjacent ridge (323) and the space between these are provided. The surface portion of the hanging part (32) located at
(322) is formed. The width of the groove (322) should be slightly smaller than the maximum outer diameter of the fan (4) so that a part of the lead (41) of the fan (4) can be held so as not to easily fall off. It has been done. On the front and rear edge portions of the surface of the left and right hanging part (32), two protruding ridges (324) extending vertically are provided at predetermined intervals. These ridges (324)
In order to make it difficult for the connecting part (321) provided in the hanging part (32) to come off from the fan holder connecting groove (212), the hanging part (32)
It serves as a beam to increase the strength of the beam. A substantially inverted U-shaped fin holding portion (325) is formed inside the upper and lower ends of the left and right hanging portion (32) so as to be continuous with the front and rear end portions. The left and right fan holding portions (33) are provided in a continuous manner at the center of the front and rear lengths at the upper edges of the left and right hanging portions (32), and have a substantially trapezoidal plate shape as viewed from the left and right directions. From the center of the front and rear length of the left and right hanging part (32) surface to the left and right fan holding part (33) surface,
Three ridges (34) extending in the vertical direction are provided at predetermined intervals. These ridges (34) serve as beams that increase the strength of the left and right fan holders (33) so that the fan (4) does not easily come off the fan holder (3).

The fan (4) has a casing (42) which is substantially rectangular when viewed from above. The front and rear edges of the casing (42) are arranged on the front and rear fan mounting portions (31). As shown in FIG. 1, the arc-shaped central portion (31A) of the front and rear fan mounting portion (31) when viewed from a plane is the fan (4).
It protrudes beyond the outside. Therefore,
In some cases, a groove for partially fitting and restraining the lead wire (41) of the fan (4) is formed in the protruding portion (31A).
It is also possible to provide one to several pieces on the upper surface of the. At four corners of the casing (42), vertical bolt insertion holes (421) are provided. However, in this embodiment, these holes (4
21) is not used. A lead wire (41) extends from a portion near the rear end on the left side surface of the casing (42). Lead wire (4
In 1), there are a total of three pieces, which are joined and integrated in a state where they are in parallel contact. At the end of the lead wire (41), an insertion portion (411) to be inserted into the connector (9) is provided.
As shown in FIG. 1, the lead wire (41) is partially fitted into the three grooves (322) of the lower left part (32) so as to be meandering when viewed from the side, and is restrained.

The CPU cooling unit (1) is assembled, for example, as follows. First, heat sink (2)
Clip (5) into the clip placement groove (211) on the top surface of the board (21)
After placing, the connecting portion (321) of the fan holder (3) is pressed against the left and right edges of the substrate (21) of the heat sink (2) from above, so that the connecting portion (321) is provided. Each of the hanging parts (32) is elastically deformed to spread outward, and the connecting part (3
When 21) crosses the left and right edges of the board (21), it sags
(32) is restored. As a result, the connection portion (321) of the fan holder (3) is connected to the groove (212) on the lower surface of the substrate (21) of the heat sink (2).
The fan holder (3) is connected to the substrate (21). Next, by pressing the left and right edges of the lower surface of the casing (42) of the fan (4) against the engaging portions (331) of the left and right fan pressing portions (33), the respective fan pressing portions (33) The casing (42) is elastically deformed so as to spread over the engaging part (33
When the vehicle gets over 1), the fan holding part (33) is restored. As a result, the engaging portions (331) are engaged with the left and right edges of the upper surface of the casing (42) of the fan (4), and the fan (4) is laterally moved by the left and right fan pressing portions (33) of the fan holder (3). And the fan (4) is placed across the front and rear fan placement portions (31) of the fan holder (3). Then, as shown in FIG. 2, the lead wire (41) of the fan (4) is partially fitted into three grooves (322) provided in the lower left part (32) of the fan holder (3). to bound. C assembled in this way
The PU cooling unit (1) is shipped packed in a cardboard case or the like, but as described above, the lead wire (4) of the fan (4) is
1) is restrained by being fitted into the groove (322) of the fan holder (3), and only a small length portion on the tip side is in a free state. There is no possibility that (41) is caught by the packing material and the packing operation is hindered. Further, since the CPU cooling unit (1) is packed and transported in a cardboard case or the like with the lead wire (41) of the fan (4) restrained as described above, the lead wire (41) is transported during transportation. There is no worry that it will move and be damaged.

FIG. 3 shows the CPU cooling unit (1)
This shows a state in which it is incorporated in a motherboard (6) of a personal computer. In FIG. 3, the motherboard
A socket (7) is mounted on (6) and this socket
The CPU (8) is connected to (7). And CPU (8)
The central part of the lower surface of the substrate (21) of the heat sink (2) is disposed on the CPU, and the CPU cooling unit (1) is fixed to the socket (7) by the clip (5). The clip (5) is connected to the substrate (21) of the heat sink (2) as also shown in FIGS.
Board holding part (51) arranged at the center of the length of the groove (211) on the upper surface, and protrusions on the left and right side surfaces of the socket (7) at the lower end
The two right and left legs (52A) and (52B) having through holes (521) into which the hole edges are fitted to (71), and the legs (52A) and (52B) facing downward with respect to the substrate pressing portion (51). The left and right ends of the board holding part (51) and the left and right legs (52A) so that a spring force acts upward.
(52B) and two right and left connecting portions (53A) and (53B) inclined upward and outward to connect to the upper end of (52B). This clip
(5) is manufactured, for example, by pressing a thin metal plate such as spring steel. When fixing the CPU cooling unit (1), each leg (52A) (5
2B) may be pushed down so that the edges of the through holes (521) at the lower ends thereof are fitted to the projections (71) of the socket (7).
The connector (9) of the lead wire (41) of the fan (4) is provided on the left side of the socket (7) on the motherboard (6),
Here, the insertion portion (411) at the tip of the lead wire (41) is inserted and connected. In this embodiment, since the connector (9) of the lead wire (41) of the fan (4) is provided relatively close to the fan (4), the lead wire (41) of the fan (4) is
It is connected to the connector (9) in a state where it is fitted in all the grooves (322) of (3) and restrained. On the other hand, in the case where the connector of the fan lead wire is incorporated in a motherboard of a personal computer provided at a position away from the fan, for example, rearward as compared with FIG.
Remove the (41) from all the grooves (322) or the two rear and middle grooves (322) of the fan holder (3) so that the free part is as long as necessary, and then connect it to the connector. What is necessary is just to connect.

FIGS. 4 to 6 show a groove (322) for fitting a lead wire provided in a hanging portion (32) of the fan holder (3) in FIGS.
This shows a modification of the first embodiment.

The three lead wire insertion grooves (322A) shown in FIG.
Are three parallel vertical ridges (326) tapered at both upper and lower ends, a vertical ridge (323) disposed on the rear side thereof and having the same rectangular cross section over the entire length, Convex ridges (326) (323)
And 2) the surface portion. With the above configuration, each groove (322A) has a groove width in which an intermediate portion of the length is capable of restraining the lead wire (41), and groove widths on both sides are gradually increased toward both ends. ing. In the case of the groove (322A), there is an advantage that the work of inserting and removing the lead wire (41) can be easily performed.

Next, a lead wire fitting groove (322B) shown in FIG.
Has three parallel vertical ridges (327) having a T-shaped cross section, and a vertical ridge (328) having an L-shaped cross section disposed on the rear side thereof;
Left hanging part located between adjacent ridges (327) (328)
(32). With the above configuration, each groove (322B) is formed as an internal enlarged groove having a T-shaped cross section. In the case of the groove (322B), the groove (32B) shown in FIGS.
2) Although the workability of fitting and removing the lead wire (41) is slightly inferior to (322A), there is an advantage that the lead wire (41) can be held more reliably.

In FIG. 6, the lead wire fitting groove (322C)
Are provided only on the rear end surface of the lower left part (32). The groove (322C) has a pair of vertical ridges (329) having a substantially arc-shaped cross section arranged so that the concave sides face each other,
Left lower part located between them and having a concave arc cross section
(32) and an inner enlarged groove having a substantially C-shaped cross section. In the case of the groove (322C), since the distance between both edges of the opening is slightly larger than that of the groove shown in FIG. 5, the work of inserting and removing the lead wire (41) is easy, and FIGS. The lead wire (41) can be held more reliably than the grooves (322) and (322A) shown in FIG. Since there is only one groove (322C), for example, as shown in FIG. 6, the base end portion of the lead wire (41) is formed along the front side of the groove (322C) on the surface of the hanging portion (32). After that, the portion of the lead wire (41) connected thereto may be fitted into the groove (322C) from below.

The above embodiment is merely an example, and it goes without saying that the present invention can be implemented with appropriate modifications without departing from the scope of the present invention described in the appended claims.

[Brief description of the drawings]

FIG. 1 illustrates an embodiment of the present invention, and includes a CPU.
It is a perspective view of a cooling unit.

FIG. 2 is an exploded perspective view showing the CPU cooling unit of FIG. 1;

FIG. 3 is a side view showing a state where the CPU cooling unit of FIG. 1 is incorporated in a motherboard of a personal computer.

FIG. 4 is a partially enlarged perspective view showing a modified example of a groove of a fan holder in the CPU cooling unit of FIG. 1;

FIG. 5 is a partially enlarged perspective view showing another modification of the groove of the fan holder in the CPU cooling unit of FIG. 1;

FIG. 6 is a partially enlarged perspective view showing still another modified example of the groove of the fan holder in the CPU cooling unit of FIG. 1;

[Explanation of symbols]

(1): CPU cooling unit (2): Heat sink (21): Board (22): Fin (3): Fan holder (31): Fan mounting part (32): Hanging part for connection (321): Connection part (322) (322A) (322B) (322C): Groove that can partially fit and restrain the fan lead wire (33): Fan holding portion (331): Engagement portion (4): Fan (41) :Lead

Claims (3)

[Claims] An integrated circuit cooling device connected to a substrate of a heat sink disposed on an integrated circuit mounted on a socket and holding a fan at a position above a fin on the upper surface of the substrate or at one of front, rear, left and right sides. A fan holder for an integrated circuit cooling unit, characterized in that a fan holder of the unit is provided with one or a plurality of grooves on its surface capable of partially fitting and restraining a fan lead wire. 2. A front and rear fan mounting portion on which a fan is mounted, and a right and left end of the front and rear fan mounting portion are provided in a hanging manner to connect the left and right end portions thereof. A left and right connection hanging portion having a connection portion to be connected, and an engaging portion extending upward from the upper end of the left and right hanging portion along the left and right side surfaces of the fan and engaging the left and right edges of the fan upper surface at the tip. A right and left fan holding portion, and a groove capable of partially fitting and restraining a fan lead wire is provided in at least one of a front and rear fan mounting portion, a left and right hanging portion, and a left and right fan holding portion. 2. The integrated circuit cooling unit fan holder according to claim 1, wherein one or a plurality of the fan holders are provided on a surface of the integrated circuit cooling unit. 3. The fan holder according to claim 1, further comprising: a heat sink provided on the integrated circuit mounted on the socket, the heat sink including a substrate and fins provided on the upper surface of the substrate, and the fan holder according to claim 1 connected to the substrate of the heat sink. A fan held by the fan holder at a position above the fins of the heat sink or at one of the front, rear, left and right sides, and partially restricting the lead wires of the fan into grooves provided on the surface of the gantry. An integrated circuit cooling unit, characterized in that