JP7233282B2 - Heat dissipation structure of heat-generating member - Google Patents

Description

The present invention relates to, for example, a heat dissipation structure for a heat generating member mounted on a substrate.

Conventionally, in a board structure in which heat-generating electronic components or a mounting board on which electronic components are mounted (collectively referred to as heat-generating members hereinafter) are mounted on the board, a heat-radiating member for dissipating the heat of the heat-generating member is installed side by side with the heat-generating member. A heat dissipation structure for a heat generating member has been proposed.

For example, in the heat dissipation structure of the heat-generating member described in Patent Document 1, the heat-generating member is pressed against the heat-dissipating member installed on the substrate by a clamp member having a spring property, thereby transmitting the heat of the heat-generating member to the heat-dissipating member. A structure for dissipating heat is disclosed.

In the heat dissipation structure of the heat-generating component described in Patent Document 1, the heat-generating member is solder-mounted on the substrate, the heat-generating member is installed at a position close to the heat-generating member, and the heat-generating member is pressed against the heat-dissipating member by a clamp. The members are assembled by fixing them to the heat dissipating members with screws.

Such screw fixation of the clamping member is often performed when mounting the product. In general, many other electronic parts, transformers, connectors, etc. are installed in the , so the operator's hands and tools may interfere with other electronic parts during assembly work, and there is not enough space for assembly work. In some cases, the assembling work may be complicated due to the inability to secure it, and it may take time to bring the heat-generating member and the heat-dissipating member into contact with each other.

JP 2004-146627 A

SUMMARY OF THE INVENTION In view of the problems described above, it is an object of the present invention to provide a heat-dissipating structure for a heat-generating member that can easily bring the heat-generating member and the heat-dissipating member into contact with each other.

The present invention provides a heat-generating member erected with respect to a substrate, a heat-radiating member adjacent to the heat-generating member and arranged in parallel, a detachable outer cover, and at least the heat-radiating member and the heat-generating member. A pressing member for pressing one side against the other is provided, and the exterior cover is detachable along the erecting direction in which the heat generating member is erected with respect to the substrate, and the pressing member presses the one side. A pressing portion that presses toward the other side, and an acted portion to which an external force acts along with the attachment operation of the exterior cover, are fixed at predetermined positions, and the pressing is performed based on the external force acting on the acted portion. and a support portion that movably supports the heat-generating member and the heat-dissipating member. The pushing member is bent in the opposite direction and provided with the pressing portion on one end side with respect to the pivotal support portion, and with the acted portion on the other end side with respect to the pivotal support portion. The heat-dissipating structure of the heat-generating member is such that the heat-generating member and the heat-dissipating member are brought into contact with each other in the mounted state of the outer cover while the one of the heat-generating members is pressed against the other along with the mounting operation of mounting the outer cover. Characterized by

The heat-generating member mounted on the substrate described above may be an electronic component such as a transistor mounted on the substrate, or an electronic component-mounted substrate in which these electronic components are mounted on another substrate.
The heat radiation member includes, for example, a side wall of the exterior cover, a separate member attached to the exterior cover, and a separate member from the exterior cover.

The detachable outer cover described above is a structure in which the heat-generating member is attached and detached along the erecting direction with respect to the substrate, and detachable by pivoting the edge of the outer cover as a pivot axis. It includes a configuration to slide the device to a desired position and a configuration to install it.

It should be noted that the above-mentioned sliding and attaching to the desired position means moving the outer cover in the direction of the heat radiating member with respect to the heat generating member. That is, the pressing member presses the heat-generating member against the heat-generating member by moving the outer cover in the direction of the heat-radiating member relative to the heat-generating member.

The above-mentioned contact between the heat generating member and the heat dissipating member includes direct or indirect contact between the heat generating member and the heat dissipating member. Specifically, in addition to the case where the heat generating member and the heat radiating member are in direct contact, the case where the heat generating member and the heat radiating member are in contact via another member such as an insulating seal is included.

The bending mentioned above includes the case where the pressing member is bent and the case where it is curved.
The bending in the direction in which the heat-generating member and the heat-dissipating member face each other includes the case where the heat-generating member is bent convexly or concavely toward the heat-generating member.

The pivotal support portion is not limited to being provided at a location where the pressing member is bent, and may be provided at a location where the pressing member is not bent.

According to this aspect of the invention, only by mounting the exterior cover, the one that is arranged inside the exterior cover in the attached state can be pressed against the other by the pressing member. Thereby, the heat-generating member and the heat-dissipating member can be easily brought into contact with each other.

Further, the exterior cover is detachable along a direction in which the heat generating member is erected with respect to the substrate, and the pressing member includes a pressing portion that presses the one toward the other; An acted portion to which an external force acts along with the mounting operation of the exterior cover, and a support portion that is fixed at a predetermined position and movably supports the pressing portion based on the external force acted on the acted portion. are provided .

Thus, by simply mounting the exterior cover along the erecting direction, the external force acting on the acted portion is transmitted to the pressing portion, and the pressing portion presses the one toward the other. can be moved. That is, the one can be pressed against the other by a simple operation of moving the exterior cover along the erecting direction, so that the heat of the heat-generating member can be easily transferred to the heat-dissipating member to radiate heat. can do.

Further, since the outer cover is simply moved along the erecting direction, various electronic components other than the heat-generating member erected on the substrate may be attached to the outer cover as the outer cover is mounted. Interference of the pressing member can be prevented. Therefore, it is possible to prevent the electronic components and the like standing on the substrate from being damaged.

Further, the support portion is configured by a pivot portion that pivotally supports the pressing member, and the pressing member is bent in a direction in which the heat generating member and the heat radiating member face each other, The pressing portion is provided on one end side of the pivotal support portion, and the operated portion is provided on the other end side of the pivotal support portion.

Thereby, heat can be radiated by pressing the heat generating member against the heat radiating member with a simple structure.
In more detail, the mounting operation of the outer cover causes an external force to act on the acted portion, and the pressing member pivots about the pivotal support portion. Thereby, the pressing portion provided on one end side of the pressing member presses the one side against the other side, so that the heat-generating member and the heat-dissipating member can be brought into contact with each other.

In this way, by pivoting the pressing member by mounting the exterior cover, the external force when mounting the exterior cover along the erecting direction can be changed into a force for pressing the one against the other. can. In addition, since the pressing member pivots due to an external force when the outer cover is mounted along the erecting direction,
In the attached state, no load is applied to the other end side of the pressing member, and damage to the pressing member can be prevented.

Further, as an aspect of the present invention, a position restricting portion may be provided that restricts the acted portion so that it stays at a predetermined position when the exterior cover is released.
According to this invention, it is possible to prevent the pressing member from unintentionally interfering with other members when the exterior cover is released.

It should be noted that staying at the above-described predetermined position means, for example, fixing the position of the pressing member so that the operated portion is disposed at a predetermined position, or It also includes the case where the movement of the pressing member is restricted within a predetermined range so as not to move outward.

Further, as an aspect of the present invention, the pressing member is provided on a surface of the exterior cover that intersects with the erecting direction, and the exterior cover is recessed inwardly at a location where the pressing member is arranged. good too.
According to the present invention, by applying an external force to the recessed portion to mount the exterior cover, the pressing member can be reliably pressed against the one side, and space can be saved.

Further, as an aspect of the present invention, a fixing portion may be provided for fixing the pressing member while the heat generating member and the heat radiating member are in contact with each other.
According to this aspect of the invention, the heat generating member and the heat radiating member can be kept in contact with each other with the exterior cover attached. Even if an unintended external force acts in the opposite direction, the contact state between the heat generating member and the heat radiating member can be maintained, so that the heat of the heat generating member can be reliably radiated from the heat radiating member. can.

Further, as an aspect of the present invention, the pressing member may be provided with a protruding portion in which a portion for pressing the one side protrudes toward the other side.
According to the present invention, the pressing member can reliably press the one side, so that the heat dissipating member and the heat generating member can be brought into contact with each other more reliably, and the heat of the heat generating member can be more reliably dissipated by the heat dissipating member. can dissipate heat.

Further, as an aspect of the present invention, a plurality of the heat-generating members are arranged in tandem along a direction orthogonal to the direction in which the heat-generating members are arranged in parallel with the heat-dissipating member, and the pressing member attaches the exterior cover. Along with the mounting operation, the plurality of heat generating members may press one of the heat radiating members and the other toward the heat radiating member to bring the plurality of heat radiating members and the heat radiating member into contact with each other.
According to the present invention, a plurality of heat-generating members can be brought into contact with the heat-radiating member at once only by attaching the exterior cover, so that the heat-generating members can more easily and efficiently radiate heat.

Further, as an aspect of the present invention, a plurality of the pressing members may be arranged so as to correspond to the plurality of heat-generating members arranged in tandem, and a connecting portion for connecting the plurality of pressing members may be provided.
According to this aspect of the invention, since the pressing members arranged to correspond to the plurality of heat generating members are connected to each other by the connecting portion, the strength of the pressing members can be improved.

Further, as a mode of the present invention, a mounting guide portion may be provided for guiding the exterior cover to a desired position.
According to the present invention, the exterior cover can be easily and accurately attached to a desired position, so that the pressing member can be pressed against the one more easily and reliably, and the heat generating member and the heat radiating member can be securely attached. can be contacted.

Further, as an aspect of the present invention, the one may be provided with an abutment concave portion against which the pressing member to be pressed abuts.
According to this aspect of the invention, since the pressing member can be fitted into the contact recess, it is possible to prevent displacement of the pressing member with respect to the one.

Further, as an aspect of the present invention, an adjusting portion is provided for adjusting the pressing strength with which the pressing member presses the one side when the exterior cover is attached.
The adjustment unit adjusts the pressing strength with which the pressing member presses the one side by the mounting operation of mounting the exterior cover, or adjusts the pressing strength with which the pressing member presses the one side after mounting the exterior cover. It may be a configuration.

According to the present invention, since the pressing strength with which the one is pressed can be adjusted, even if the pressing member excessively presses the one or the strength with which the one is pressed is weak, the one can be reliably pressed against the other. In addition, damage to the heat-generating member can be prevented.

According to the present invention, it is possible to provide a heat-dissipating structure for a heat-generating member that allows the heat-generating member and the heat-dissipating member to contact each other without much effort.

The schematic perspective view of the principal part of a thermal radiation structure. FIG. 2 is a schematic exploded perspective view of a main part of the heat dissipation structure; Explanatory drawing in the longitudinal cross-sectional view of the principal part of a thermal radiation structure. FIG. 4 is a vertical cross-sectional view of a main part of a heat dissipation structure according to another embodiment; The side view of the principal part of the heat dissipation structure in another embodiment. The side view of the principal part of the heat dissipation structure in another embodiment. The schematic perspective view of the principal part of the thermal radiation structure of 2nd Embodiment. Explanatory drawing in the longitudinal cross-sectional view of the principal part of the heat dissipation structure in 3rd Embodiment. Explanatory drawing in the longitudinal cross-sectional view of the principal part of the heat dissipation structure in 4th Embodiment. Explanatory drawing in the longitudinal cross-sectional view of the principal part of the heat dissipation structure in 5th Embodiment.

(First embodiment)
A heat dissipation structure 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG.
FIG. 1 shows a schematic perspective view of the main part of the heat dissipation structure 1, FIG. 2 shows a schematic exploded perspective view of the main part of the heat dissipation structure 1, and FIG. 2 shows an explanatory diagram.

More specifically, FIG. 1(a) is a schematic perspective view of only the main part of the heat dissipation structure 1 cut out and viewed from the internal space inside the housing, and FIG. FIG. 4 is a schematic exploded perspective view in which parts are disassembled into respective configurations;
2 also shows an enlarged perspective view of the α portion of the pressing member 30 and the β portion of the pivotal connection support portion 40. As shown in FIG.

3A and 3B are longitudinal cross-sectional views of the essential parts of the heat dissipation structure 1. Specifically, FIG. b) shows a longitudinal sectional view of the upper cover 12 attached to the undercover 11. FIG.

Here, the height direction (the vertical direction in FIG. 1) of the heat dissipation structure 1 is defined as the vertical direction H, the upper side is defined as the upper side Hu, and the lower side is defined as the lower side Hd. The width direction of the heat dissipation structure 1 (the direction connecting the lower right and the upper left in FIG. 1) is defined as the width direction W, and the inside and outside direction of the housing 10 in the heat dissipation structure 1 (the direction connecting the upper right and the lower left in FIG. 1) ) is defined as inner IN, and the outer side (upper left in FIG. 1) is defined as outer OUT. The vertical direction H and the width direction W are orthogonal to each other.

The heat dissipation structure 1 is a heat dissipation structure that emits the heat generated by the heat generating components 20 housed inside the housing 10 to the outside of the housing 10, and is mounted on, for example, an electric junction box.
As shown in FIGS. 1 and 2, the heat dissipation structure 1 comprises a housing 10 together with an undercover 11, an upper cover 12 functioning as a heat dissipation member, and an internal space formed inside IN of the housing 10. a heat-generating component 20 mounted on a substrate 13 arranged on the upper cover 12; a pressing member 30 for pressing the heat-generating component 20 against the upper cover 12; Housed in the housing 10 .

The housing 10 includes a concave under cover 11 having an open upper side Hu formed by a bottom surface 11a and side surfaces 11b, and an inverted concave upper cover 12 formed by an upper surface 12a and side surfaces 12b and having an open lower side Hd. are assembled in the vertical direction H, and has an internal space inside. 1 and 2 show only part of the housing 10. As shown in FIG.

The side surface 11b of the under cover 11 is provided with an installation portion 11c provided in conformity with the shape of the substrate 13 so that the substrate 13 can be installed, and a guide for guiding the upper cover 12 installed from above so that it can be installed in a desired position. A portion 11d is formed.
The guide portion 11d is a tapered surface formed on the outer side of the upper end surface of the side surface 11b, and continuously slopes downward toward the inside.

The upper cover 12 functioning as a heat radiating member is a highly heat radiating metal cover body which is detachable from the under cover 11 in the vertical direction H. A restriction convex portion 12c is formed to protrude toward the inner side IN. An insulating sheet 60 is attached to the inner surface of the side surface 12b of the upper cover 12. As shown in FIG.

The heat-generating component 20 is an electronic component such as a transistor, and when the upper cover 12 is attached to the undercover 11, the heat-generating component 20 is adjacent to the side surface 12b and arranged in parallel along the inside-outside direction.

The heat-generating component 20 has a plurality of (three in this embodiment) conductive leg portions 21 extending downward from the bottom portion. The heat-generating component 20 can be erected and mounted on the substrate 13 by being fixed by soldering on the bottom surface side of the substrate 13 . The erecting direction of the heat-generating component 20 with respect to the substrate 13 coincides with the vertical direction H. As shown in FIG.
In addition, on the main surface on the inner IN side, a contact recessed portion 22 is provided in which the central portion is slightly recessed toward the outer side OUT.

The heat-generating component 20 mounted with the leg portion 21 penetrating through the through hole 13a is arranged at a height above the upper surface of the substrate 13 with an appropriate distance therebetween, and the leg portion 21 is exposed below. The heat-generating component 20 is mounted while being supported by the legs 21 .

The pressing member 30 is a member that is pivotably supported by a pivot connection support portion 40, which will be described later, and as shown in FIG. A cylindrical pivot shaft 31 extending in the width direction W is inserted through the bent portion.

The pressing member 30 is composed of a pressing side main body 32 formed in a flat plate shape, and a flat plate-like operated side main body 33 projecting from slightly above the central portion of the main surface of the outer side OUT of the pressing side main body 32 . . That is, the pivot shaft 31 is inserted along the width direction W at the intersection of the pressing side body 32 and the operated side body 33 as seen from the width direction W. As shown in FIG.

The central portion of the lower side Hd of the pressing side main body 32 constitutes a pressing portion 321 that presses the heat generating component 20 , and the central portion of the outer side OUT of the operated side main body 33 is pushed upward (upper side Hu) by the heat generating component 20 . It constitutes an operated portion 331 to be pushed up. The pressing portion 321 is formed to protrude outward OUT, and the operated portion 331 is formed to protrude downward Hd.

Further, the pressing side body 32 protrudes upward Hu from the operated side body 33 when viewed in the width direction W, and the side surface (width direction end face) of the pressing side body 32 is recessed along the width direction W. A locking recess 34 is provided above the outer OUT with respect to the pivot shaft 31 (see α section in FIG. 2).

The pivotal connection support portion 40 extends from the upper surface 12a of the upper cover 12 toward the inner side IN, and includes plate-like support portions 41, 41 provided at a predetermined interval. It is composed of a connecting wall 42 that connects the upper ends.

The support portions 41, 41 are flat plates fixed to the upper surface 12a, and a through hole 43 through which the pivot shaft 31 of the pressing member 30 can be inserted is provided in the central portion of the lower side Hd. In addition, on the inner sides of the support portions 41, 41 in the width direction W, locking protrusions 44 projecting along the width direction W are provided above the outer side OUT of the through holes 43 (see FIG. 2). See part α).

The connecting wall 42 is a flat plate that connects the upper ends of the support portions 41, 41, and in a state where the pressing side main body 32 is arranged along the vertical direction H, the connecting wall 42 is located above the outer OUT side main surface of the operated side main body 33. are configured to abut.
This prevents the operated-side main body 33 from pivoting to the inner side IN and interfering with other members.

As shown in FIG. 1, the pressing member 30 and the pivotally connected support portion 40 configured as described above are configured such that the pressing member 30 pivots the pivotal shaft 31 by inserting the pivotal shaft 31 into the through hole 43 . It is supported by a pivotal connection support 40 so as to be pivotable as a driving axis.

The insulating sheet 60 is a sheet material having insulating properties and excellent thermal conductivity.

As shown in FIG. 3( a ), the heat dissipation structure 1 has the upper cover 12 attached to the under cover 11 and the inner side of the insulating sheet 60 attached to the inner surface of the side surface 12 b of the upper cover 12 . A heat-generating component 20 mounted on the substrate 13 is arranged in parallel on the IN, and the heat-generating component 20 is pressed against the outer OUT by a pressing member 30 arranged on the inner IN.

Next, a method of pressing the heat-generating component 20 against the side surface 12b with the pressing member 30 will be briefly described with reference to FIG.
First, the upper cover 12 provided with the pressing member 30 and the pivotal connection support portion 40 is placed above the undercover 11 and moved downward Hd so as to be attached to the undercover 11 (FIG. 3). (a)). At this time, the lower end portion of the side surface 12b is guided to a desired position by the guide portion 11d.

As a result, the upper surface of the heat-generating component 20 arranged below the pressing member 30 comes into contact with the operated portion 331, and the operated-side main body 33 is pivotally pushed upward with the pivot shaft 31 as the pivot shaft. do. As a result, the pressing side body 32 integrated with the operated side body 33 also pivots about the pivot shaft 31, and the pressing portion 321 presses the inner surface of the inner side IN of the heat generating component 20 against the outer side OUT. The heat-generating component 20 is brought into contact with the side surface 12b via the insulating sheet 60 (see FIG. 3(b)). Thereby, the heat of the heat-generating component 20 can be transferred to the side surface 12b and released to the outside from the side surface 12b.

When the upper cover 12 is attached to the undercover 11 , the upper cover 12 is attached to the undercover 11 so as to surround the substrate 13 . Part 20 can be protected.

Further, in this state, the engaging projection 44 is fitted into the engaging recess 34, and the upper surface of the operated-side main body 33 abuts against the restricting projection 12c. 20 can be prevented from being pressed.

The heat-dissipating structure 1 configured in this way includes the heat-generating component 20 erected with respect to the substrate 13 , the side surface 12 b that is adjacent to the heat-generating component 20 and arranged in parallel, and the detachable structure that protects the heat-generating component 20 . A flexible upper cover 12 and a pressing member 30 for pressing the heat-generating component 20 against the side surface 12b are provided. In addition, when the upper cover 12 is attached, the heat-generating component 20 and the side surface 12b are configured to be in contact with each other. can be pressed toward the side surface 12 b by the pressing member 30 . Thereby, the heat-generating component 20 can be easily brought into contact with the side surface 12b.

The upper cover 12 is detachable along the vertical direction H in which the heat-generating component 20 is erected with respect to the substrate 13, and the pressing member 30 has a pressing portion 321 that presses the heat-generating component 20 toward the side surface 12b. , an acted portion 331 to which an external force acts as the upper cover 12 is attached, and a pivot that is fixed at a predetermined position and movably supports the pressing portion 321 based on the external force acting on the acted portion 331 . With the provision of the support shaft 31, simply by mounting the upper cover 12 along the vertical direction H, the external force acting on the acted portion 331 is transmitted to the pressing portion 321, and the heat generating component 20 is attached to the side surface 12b. The pressing portion 321 can be moved so as to press toward it.

That is, since the heat-generating component 20 can be pressed against the side surface 12b by a simple operation such as moving the upper cover 12 along the vertical direction H, the heat of the heat-generating component 20 can be easily transmitted to the side surface 12b and radiated. can.

Further, since the upper cover 12 is simply moved along the vertical direction H, the member 30 is pressed against various electronic components other than the heat-generating components 20 erected on the substrate 13 as the upper cover 12 is mounted. can be prevented from interfering with Therefore, it is possible to prevent the electronic components and the like standing on the substrate 13 from being damaged.

The pivot shaft 31 pivotally supports the pressing member 30, and the pressing member 30 is bent in the direction in which the heat-generating component 20 and the pressing member 30 face each other. Since the pressing part 321 is provided on one end side of the pivot shaft 31 and the operated part 331 is provided on the other end side of the pivot shaft 31, the heat generating component 20 is pressed against the side surface 12b with a simpler structure to dissipate heat. can do.

More specifically, the pressing member 30 pivots around the pivot shaft 31 due to an external force acting on the applied portion 331 due to the mounting operation of the upper cover 12 , and the pressing member 30 is provided on one end side of the pressing member 30 . The pressing portion 321 presses the heat-generating component 20 toward the side surface 12b so that the heat-generating component 20 and the side surface 12b can be brought into contact with each other.

By thus pivoting the pressing member 30 by attaching the upper cover 12, the external force when attaching the upper cover 12 along the vertical direction H can be converted into a force pressing the heat generating component 20 against the side surface 12b. can be done.

In addition, since the pressing member 30 pivots due to an external force when the upper cover 12 is attached along the vertical direction H, the other end side (operated side body 33) of the pressing member 30 and the heat-generating component 20 in the attached state. Damage to the heat-generating component 20 and the pressing member 30 can be prevented without applying a load.

In addition, when the upper cover 12 is released, the connecting wall 42 is provided to restrict the affected portion 331 to stay at a predetermined position. 30 can be prevented from unintentionally interfering with other members.

In addition, the pressing member 30 is provided with the locking recess 34 that locks and fixes the locking projection 44 while the heat generating component 20 and the side surface 12b are in contact with each other. can be maintained in contact with each other.

As a result, even if an unintended external force acts in a direction opposite to the direction in which the pressing member 30 presses the heat-generating component 20 due to vibration of the vehicle body, for example, the contact state between the heat-generating component 20 and the side surface 12b can be maintained. , the heat of the heat-generating component 20 can be reliably radiated from the side surface 12b.

Furthermore, since the pressing member 30 is provided with the pressing portion 321 where the heat generating component 20 is pressed protrudes toward the side surface 12 b, the pressing member 30 can reliably press the heat generating component 20 . Therefore, the side surface 12b and the heat-generating component 20 can be brought into contact with each other more reliably, and the heat of the heat-generating component 20 can be more reliably dissipated through the side surface 12b.

Further, since the guide portion 11d for guiding the upper cover 12 to a desired position is provided, the upper cover 12 can be easily and accurately attached to a desired position, and the pressing member 30 can be more easily and reliably attached. By pressing against the heat-generating component 20, the heat-generating component 20 and the side surface 12b can be reliably brought into contact with each other.

Furthermore, since the heat-generating component 20 is provided with the contact recess 22 against which the pressing member 30 is pressed, the pressing member 30 can be fitted into the contact recess 22 . positional deviation can be prevented.

In addition, in the heat dissipation structure 1 of the first embodiment, the upper cover 12 is formed on a flat surface, but it does not necessarily have to be flat. For example, as shown in FIG. 12a may be recessed medial IN where pivotal connection support 40 is located.

In this way, by recessing the portion of the upper cover 12 where the pressing member 30 is arranged, more precisely, the portion where the pivotal connection support portion 40 for supporting the pressing member 30 is arranged, the portion is recessed inward IN. By applying an external force to the upper cover 12, the pressing member 30 can be reliably pressed against the heat-generating component 20, and space can be saved.

Further, in the heat dissipation structure 1 of the first embodiment, the support portion 41 is provided with a through hole 43 having an inner diameter substantially equal to the outer diameter of the pivot shaft 31. For example, as shown in FIG. In addition, an adjustable through-hole 45 that can adjust the strength with which the heat-generating component 20 is pressed may be provided.

5 and 6, the adjustable through-holes 45, the pivotal coupling support portion 40x having the adjustable through-holes 45, and the heat dissipation structure 1x will be briefly described. However, among the configurations described below, the configurations similar to those of the heat dissipation structure 1 of the first embodiment described above are denoted by the same reference numerals, and the descriptions thereof are omitted.

5 shows a schematic side view of the pivot connection support portion 40x corresponding to the pivot connection support portion 40, the pressing member 30, and the heat-generating component 20 viewed from the width direction W, and FIG. FIG. 11 is an explanatory diagram illustrating movement of the pressing member 30 in a side view;
5 and 6, illustration of the under cover 11 and the upper cover 12 is omitted.

More specifically, FIG. 6(a) shows a side view of the pressing member 30, the pivotally connected support portion 40x, and the heat-generating component 20 before the upper cover 12 is attached to the undercover 11, and FIG. 6(b). 4 shows a side view of the pressing member 30, the pivotal connection support portion 40x, and the heat generating component 20 while the upper cover 12 is being lowered toward the under cover 11. FIG.

Similarly, FIG. 6(c) shows a side view of the pressing member 30, the pivotal connection support portion 40x, and the heat-generating component 20 while the upper cover 12 is being lowered toward the undercover 11, and FIG. ) shows a side view of the pressing member 30, the pivotal connection support portion 40x, and the heat-generating component 20 with the upper cover 12 attached to the undercover 11. FIG.

The adjustable through-holes 45 provided in the pivotal connection support portion 40 x corresponding to the pivotal connection support portion 40 correspond to the through-holes 43 in the pivotal connection support portion 40 .
The adjustable through-hole 45 penetrates the support portion 41x along the plate thickness direction, and has a width substantially equal to the outer diameter of the pivot shaft 31. The through-hole 45 has a stepped shape when viewed from the width direction W. are arranged in a plurality along the vertical direction H.

More specifically, as shown in FIG. 5, the adjustable through-hole 45 has a width substantially equal to the outer diameter of the pivot shaft 31, and has three through-holes 451 extending in the inner and outer directions. , and the three penetrating portions 451 are arranged so as to be continuous along the vertical direction H while being displaced in the inward and outward directions. .

More specifically, of the three through-holes 451, the central through-hole 451b has an outer OUT end that partially overlaps an inner IN end of the upper through-hole 451a. , and the end of the inner IN is arranged to partially overlap the end of the outer OUT of the through hole 451c arranged below, and the corresponding ends are connected to each other by the pivot shaft It is inserted through a communicating portion 452 having the same width as the outer diameter of 31 .

The inner IN and outer OUT ends of these penetrating portions 451 are each formed in an arcuate shape having substantially the same shape as the outer diameter of the pivot shaft 31, and are positioned inside and outside the communicating portion 452 along the vertical direction H. It is arranged so as to protrude outward in the direction.

The pivot shaft 31 inserted through the adjustable through-hole 45 arranged in the support portion 41x in this manner pivotally supports the pressing member 30, and moves inwardly and outwardly with respect to the pivotal connection support portion 40. allow.

The pressing of the heat-generating component 20 by the pivotal connection support portion 40x and the pressing member 30 will be briefly described below with reference to FIG.
Before the upper cover 12 is attached to the undercover 11, the pivot shaft 31 is arranged above the adjustable through hole 45 (upper Hu) and outside OUT (outer OUT end of the through hole 451a) ( See FIG. 6(a)).

By lowering the upper cover 12 from this state so as to attach the upper cover 12 to the undercover 11, the upper end surface of the heat-generating component 20 comes into contact with the operated portion 331, and the pivot shaft 31 is used as a pivot axis. The pressing member 30 pivots so that the operated side body 33 faces upward and the pressing side body 32 faces outward OUT. As a result, the pressing portion 321 presses the heat-generating component 20 (see FIG. 6B).

In this situation, by lowering the upper cover 12 further, the pressing member 30 pivots about the pivot shaft 31. The repulsive force acting on 321 acts on the pressing member 30 toward the inner side IN, so that the pivot shaft 31 inserted through the pressing member 30 moves along the adjustment type through-hole 45 (through-hole 451a). The member 30 moves downward and toward the inner side IN (see FIG. 6(c)).

By further lowering the upper cover 12 and attaching it to the under cover 11, the pressing member 30 is further pivoted with the pivot shaft 31 as a pivot shaft. , the pressing member 30 moves downward and toward the inner side IN (see FIG. 6(c)).

As a result, the pressing member 30 can be moved to the inner IN side by the force of the pressing member 30 pressing the heat-generating component 20, thereby preventing the pressing member 30 from excessively pressing the heat-generating component 20 against the side surface 12b. 20 and the side surface 12b can be prevented from being damaged.

As described above, since the adjustment type through-hole 45 is provided for adjusting the pressing strength with which the pressing member 30 presses the heat generating component 20 when the upper cover 12 is attached, the pressing strength with which the heat generating component 20 is pressed can be adjusted. , it is possible to prevent the pressing member 30 from excessively pressing the heat generating component 20 or from weakening the pressing strength of the heat generating component 20. - 特許庁
Therefore, the heat-generating component 20 can be reliably pressed against the side surface 12b, and the heat-generating component 20 can be prevented from being damaged by pressing of the pressing member 30. As shown in FIG.

(Second embodiment)
Further, in this embodiment, one heat generating component 20 is used, but as shown in FIG. 7, a plurality (two) of heat generating components 20 may be arranged along the side surface 12b.
In addition, FIG. 7 is a schematic perspective view corresponding to FIG. 1, and specifically shows a schematic perspective view of the heat dissipation structure 1A.

A heat dissipation structure 1A in which a plurality of heat generating components 20 are arranged will be briefly described below with reference to FIG. However, among the configurations described below, the configurations similar to those of the heat dissipation structure 1 of the first embodiment described above are denoted by the same reference numerals, and the descriptions thereof are omitted.

In the heat dissipation structure 1A, two heat-generating components 20 are arranged side by side in tandem along the width direction W orthogonal to the internal and external directions in which the heat-generating components 20 are arranged parallel to the side surface 12b. Two pressing members 30</b>A, 30</b>A are arranged side by side and supported by the pivotally connected support portion 40 so as to correspond to the heat-generating component 20 .
The pressing members 30A, 30A have the same configuration except that the pivot shaft 31 is common.

Further, in the heat dissipation structure 1A, two pivotal connection support portions 40A, 40A for supporting the pressing member 30 are arranged side by side, and the pivotal connection support portions 40A, 40A are connected to each other through the connection portion 46. ing.

In the heat dissipating structure 1A configured in this way, a plurality of heat generating components 20 are arranged in series along a direction orthogonal to the direction in which the heat generating components 20 are arranged in parallel with respect to the side surface 12b. Along with the mounting operation of mounting the cover 12, the plurality of heat-generating components 20 press the heat-generating components 20 toward the side surfaces 12b and the side surfaces 12b, and the plurality of heat-generating components 20 and the side surfaces 12b can be brought into contact with each other. A plurality of heat-generating components 20 can be brought into contact with the side surface 12b at a time only by attaching the heat-generating components 12 to the undercover 11, so that heat radiation from the heat-generating components 20 can be performed more easily and efficiently.

In addition, a plurality of pressing members 30 are arranged so as to correspond to the plurality of heat-generating components 20 arranged in series. The strength of the heat generating component 20 can be improved, and the mounting operation of the exterior member can reliably bring the respective heat generating components 20 into contact with the side surface 12b.

(Third Embodiment)
Next, a heat dissipation structure 1B according to a third embodiment of the invention will be described with reference to FIG. However, among the configurations described below, the configurations similar to those of the heat dissipation structure 1 of the first embodiment described above are denoted by the same reference numerals, and the descriptions thereof are omitted.

FIG. 8 shows a vertical cross-sectional view of the main part of the heat dissipation structure 1B, and more specifically, FIG. FIG. 8(b) shows a longitudinal sectional view of the heat dissipation structure 1B with the upper cover 12 attached to the undercover 11. As shown in FIG.

The heat dissipation structure 1B comprises a housing 10 together with an undercover 11, an upper cover 12 functioning as a heat dissipation member, and a heat dissipation structure 1B mounted on a substrate 13 arranged in an internal space formed inside IN of the housing 10. The component 20 and a pressing member 50</b>B that presses the heat-generating component 20 against the upper cover 12 are contained in the housing 10 .

The pressing member 50B is made of an elastic plate-like body, and as shown in FIG.
More specifically, the pressing member 50B is formed by bending a plate-like body, and includes a flat fixing portion 51B fixed to the upper surface 12a and an outer OUT end portion of the fixing portion 51B that is inclined downward and inward IN. It is integrally formed with the inclined portion 52B extending so as to extend.

Note that the connecting portion between the fixing portion 51B and the inclined portion 52B is arranged outside the heat generating component 20 in the attached state where the upper cover 12 is attached to the undercover 11 . That is, the inclined portion 52B is arranged above the heat-generating component 20 in the mounted state (see FIG. 8B).

As shown in FIG. 8(a), the heat-dissipating structure 1B configured in this manner is mounted on the undercover 11 when the upper cover 12 is moved toward the lower side Hd. abuts on the inclined portion 52B.

Here, since the pressing member 50B has elasticity and the inclined portion 52B is configured to incline downward and inward IN with respect to the fixed portion 51B (upper surface 12a), the upper surface of the heat-generating component 20 can be contacted. As a result, the pressing member 50B presses the heat-generating component 20 against the outer side OUT, and the heat-generating component 20 can be brought into contact with the side surface 12b.

In this manner, the heat dissipation structure 1B includes the heat generating component 20 erected with respect to the substrate 13, the side surface 12b adjacent to the heat generating component 20 and arranged in parallel, the detachable upper cover 12, the heat generating component 20 against the side surface 12b, and the pressing member 50B is integrally composed of a fixed portion 51B fixed to the upper surface 12a and an inclined portion 52B inclined toward the inner side IN as it goes toward the lower side Hd. In order to press the heat-generating component 20 toward the side surface 12b along with the mounting operation of mounting the upper cover 12, and to bring the heat-generating component 20 into contact with the side surface 12b in the mounted state of the upper cover 12, By simply mounting the upper cover 12, the heat-generating component 20 arranged inside the housing 10 in the mounted state of the upper cover 12 can be pressed against the side surface 12b by the pressing member 30. - 特許庁Thereby, the heat-generating component 20 can be easily brought into contact with the side surface 12b.

(Fourth embodiment)
Next, a heat dissipation structure 1C according to a fourth embodiment of the invention will be described with reference to FIG. However, among the configurations described below, the configurations similar to those of the heat dissipation structure 1B of the third embodiment described above are denoted by the same reference numerals, and the descriptions thereof are omitted.

FIG. 9 shows a vertical cross-sectional view of a main part of the heat dissipation structure 1C, and more specifically, FIG. FIG. 9(b) shows a longitudinal sectional view of the heat dissipation structure 1C with the upper cover 12 attached to the undercover 11. As shown in FIG.

The heat dissipating structure 1C includes an upper cover 12 functioning as a heat dissipating member, and a substrate 13 arranged in an inner space formed inside IN of the housing 10 to dissipate heat. The component 20 , a pressing member 50</b>C that presses the heat-generating component 20 against the upper cover 12 , and a contact portion 70 provided inside IN of the heat-generating component 20 are housed in the housing 10 .

The pressing member 50C is made of an elastic plate-like body, and as shown in FIG.
More specifically, the pressing member 50C includes a flat plate-like fixed portion 51B fixed to the upper surface 12a, and an inclined portion 52C extending downward and outward OUT from an inner IN end portion of the fixed portion 51C. , and an operated portion 53C extending downward and inward IN from the lower end of the inclined portion 52C. An arcuate pressing portion 54C is formed to protrude.

The abutting portion 70 is a column made of resin that is lower than the heat-generating component 20 at the inner side IN of the heat-generating component 20. As with the heat-generating component 20, the base end leg portion 71 is inserted through the through hole 13a. It is mounted on the board 13 by fixing it with solder. Note that the proximal leg portion 71 is configured to be shorter than the leg portion 21 .

Here, as shown in FIG. 9A, before the upper cover 12 is attached to the undercover 11, the pressing member 50C is arranged inside IN of the heat-generating component 20, The portion 53C is arranged above the contact portion 70 .

In this state, the upper cover 12 is moved to the lower side Hd in order to be attached to the undercover 11, so that the contact portion 70 arranged below the operated portion 53C contacts the operated portion 53C. The action portion 53C is pushed upward (see FIG. 9(b)).

Here, since the inclined portion 52C whose lower end is connected to the operated portion 53C is fixed to the proximal end of the inner side IN of the fixed portion 51C whose upper end is fixed to the upper surface 12a, the fixed portion 51C and the inclined portion 52C are separated from each other. The inclined portion 52C pivots around the connecting portion as a fulcrum. As a result, the pressing portion 54C moves to the outside OUT and presses the heat-generating component 20. As shown in FIG.

By attaching the upper cover 12 to the under cover 11, the abutting portion 70 continues to push up the operated portion 53C, so that the pressing portion 54C presses the heat-generating component 20 to contact the side surface 12b. Heat can be radiated to the outside from the side surface 12b.

In this manner, the heat dissipation structure 1C includes the heat generating component 20 erected with respect to the substrate 13, the side surface 12b adjacent to the heat generating component 20 and arranged in parallel, and the detachable heat generating component 20 protecting the heat generating component 20. An upper cover 12 and a pressing member 50C for pressing the heat-generating component 20 against the side surface 12b are provided. An inclined portion 52C extending so as to incline OUT and an operated portion 53C extending so as to incline downward and inward IN from the lower end of the inclined portion 52C are integrally constructed to form an upper cover. The heat-generating component 20 is pressed toward the side surface 12b along with the mounting operation of mounting the upper cover 12, and the heat-generating component 20 and the side surface 12b are brought into contact with each other with the upper cover 12 mounted. Then, the heat-generating component 20 arranged inside the housing 10 in the mounted state of the upper cover 12 can be pressed toward the side surface 12 b by the pressing member 30 . Thereby, the heat-generating component 20 can be easily brought into contact with the side surface 12b.

In the heat dissipation structure 1C, the material of the pressing member 50C and the contact portion 70 is not particularly limited. It is possible to prevent the influence of electromagnetic waves on such as.

Furthermore, in the heat dissipating structure 1C, the pressing member 50C and the contact portion 70 are configured to cover the heat generating component 20 in the width direction W, so that the electronic components and the like arranged on the inner side IN are not affected by the electromagnetic wave. can be prevented more reliably.

(Fifth embodiment)
Next, a heat dissipation structure 1D according to a fifth embodiment of the invention will be described with reference to FIG. However, among the configurations described below, the configurations similar to those of the heat dissipation structure 1C of the third embodiment described above are denoted by the same reference numerals, and the descriptions thereof are omitted.

FIG. 10 shows a vertical cross-sectional view of the main part of the heat dissipation structure 1D, and more specifically, FIG. FIG. 10(b) shows a longitudinal sectional view of the heat dissipation structure 1D with the upper cover 12 attached to the undercover 11. As shown in FIG.

The heat dissipation structure 1D constitutes a housing 10D together with the undercover 11, and includes an upper cover 12D functioning as a heat dissipation member, and a substrate 13 arranged in an internal space formed inside IN of the housing 10 to generate heat. The component 20 and a pressing member 50</b>C that presses the heat-generating component 20 against the upper cover 12 are contained in the housing 10 .

As shown in FIG. 10(a), the upper cover 12D is configured to be separable into an upper surface 12aD corresponding to the upper surface 12a and a side surface 12bD corresponding to the side surface 12b.
Specifically, a groove portion 12dD into which the upper surface 12aD can be inserted is formed along the width direction W at the upper end portion of the side surface 12bD. The top surface 12aD is obliquely inserted into the groove 12dD, and the top surface 12aD is pivoted using the groove 12dD as a pivot shaft to close the top (see FIG. 9A).
In addition, not only the structure of this embodiment but a hinge may be provided between the side surface 12bD and the upper surface 12aD so as to be pivotable.

In this way, by inserting the end surface of the upper surface 12aD into the groove 12dD and pivoting, the heat-generating component 20 can be pressed by the pressing portion 54C to bring the heat-generating component 20 into contact with the side surface 12bD. 20 heat can be dissipated.

In correspondence with the configuration of this invention and the above-described embodiments,
The heat dissipating member corresponds to the side surface 12b (upper cover 12), and similarly,
The exterior cover corresponds to the upper covers 12 and 12D,
The heat dissipation structure of the heat generating member corresponds to heat dissipation structures 1, 1x, 1A, 1B, 1C, and 1D,
The support part and the pivot part correspond to the pivot shaft 31,
The position regulating portion corresponds to the connecting wall 42,
The fixing part corresponds to the locking recess 34,
The projecting portion corresponds to the pressing portion 321,
The mounting guide portion corresponds to the guide portion 11d,
The adjustment part corresponds to the adjustment type through hole 45,
The present invention is not limited to the configurations of the above-described embodiments, and many embodiments can be obtained.

In addition, in the following embodiments, the same numbers are attached to the same configurations as in the present embodiment, and the description thereof is omitted. Further, the contents described in the above and following embodiments are not limited to the respective embodiments, and can be appropriately combined as long as the effects are exhibited.

For example, in the present embodiment, the heat-generating component 20 is an electronic component such as a transistor mounted on the substrate 13, but is not limited to this. good.
In this embodiment, the side surface 12b of the upper cover 12 is used as the heat dissipation member. It may be a member. Furthermore, a heat radiating member configured separately from the upper cover 12 may be erected on the substrate 13, or may be fixed to a separate member.

In addition, when the heat radiating member is configured separately from the side surface 12b, it is not always necessary to press the heat generating component 20 with the pressing member 30. For example, the pressing member 30 may press the heat radiating member against the heat generating component 20. Both the member and the heat-generating component 20 may be pressed against each other to make contact.

Furthermore, the upper cover 12 that is detachably attached to the undercover 11 can be detached and attached along the vertical direction H in which the heat-generating component 20 is erected with respect to the substrate 13 . is used as a pivot axis to attach and detach the upper cover 12D, but in addition to this, the upper cover 12D can be slid to a desired position by, for example, screwing from a position displaced from the desired position. A configuration may be adopted in which the pressing member 50C presses the heat-generating component 20 while being mounted.

That is, the pressing member 50C may press the heat generating component 20 against the side surface 12b by moving the upper cover toward the side surface 12b (outside OUT) with respect to the heat generating component 20. FIG. Furthermore, after the upper cover is moved in the width direction W to dispose the pressing member 50C at a position corresponding to the heat-generating component 20, the upper cover is moved in the direction of the side surface 12b with respect to the heat-generating component 20 (outside OUT). may be configured to move.

In addition, the upper cover 12 is configured such that the side surface 12b surrounds the outer peripheral surface of the substrate 13 on which the heat generating component 20 is mounted when the upper cover 12 is mounted. It is good also as a structure which encloses the circumference|surroundings.

Moreover, although the heat-generating component 20 and the side surface 12b are indirectly contacted, they may be directly contacted. In this case, it is necessary to correspond to at least one of the upper cover 12 and the heat generating component 20 so that there is naturally no electrical connection between the heat generating component 20 and the upper cover 12 .

In addition, in the first embodiment, which is the present embodiment, the connecting wall 42 is provided to prevent the pressing member 30 from excessively pivoting when the upper cover 12 is not attached to the undercover 11. The configuration is not limited to this, and a configuration may be adopted in which the position of the pressing member 30 is fixed so that the operated portion 331 is arranged at a predetermined position.
It should be noted that, of course, a configuration for restricting the pivoting of the pressing member 30 to the inner side IN may be provided.

In addition, in the heat dissipation structure 1C, in order to prevent electromagnetic waves from affecting electronic components and the like arranged inside IN, the pressing member 50C and the contact portion 70 are configured to cover the heat generating component 20. However, in the heat dissipation structure 1B and the heat dissipation structure 1D, the pressing member 50B and the pressing member 50B cover the heat generating component 20, thereby preventing the electromagnetic waves from affecting the electronic components arranged inside IN. be able to.

Furthermore, the heat dissipation structure 1x is provided with an adjustable through hole 45 for adjusting the pressing strength with which the pressing member 30 presses the heat generating component 20 by the mounting operation of mounting the upper cover 12, but the configuration is limited to this. For example, the pressing force with which the pressing member 30 presses the heat-generating component 20 after the upper cover 12 is attached may be adjusted.
Specifically, after the upper cover 12 is attached, the position of the pressing member 30 may be adjusted by performing an operation such as screwing from the outside of the housing 10 .

Also, the area of the portion of the pressing member 30 that presses the upper cover 12 may be increased. As a result, since the heat-generating component 20 can be pressed over a wide range, the pressing force is not concentrated, and damage to the heat-generating component 20 can be prevented.

Furthermore, in the heat dissipation structure 1, the pressing side main body 32 and the operated side main body 33 may be made of flexible members. As a result, the pressing-side main body 32 and the operated-side main body 33 can absorb the impact when the heat-generating component 20 presses the operated-side main body 33 and the force of the pressing member 30 pressing against the heat-generating component 20 . damage can be prevented.

A radiation fin may be provided on the inner side IN of the pressing side body 32 .

1, 1x, 1A, 1B, 1C, 1D heat dissipation structure 11d guide portion 12, 12D upper cover 12b, 12bD side surface 13 substrate 20 heat generating member 22 contact recess 30 pressing member 321 pressing portion 331 operated portion 34 locking recess 42 Connection wall 46 Connection portion 45 Adjustable through holes 50B and 50C Pressing member

Claims (10)

a heat-generating member erected with respect to the substrate;
a heat dissipating member arranged in parallel and close to the heat generating member;
A detachable exterior cover,
a pressing member for pressing at least one of the heat radiating member and the heat generating member against the other;
The exterior cover is detachable along a direction in which the heat generating member is erected with respect to the substrate,
The pressing member is
a pressing portion that presses the one toward the other;
an acted portion to which an external force acts as the exterior cover is attached;
a support portion that is fixed at a predetermined position and movably supports the pressing portion based on an external force acting on the acted portion;
The support part is
comprising a pivot that pivotally supports the pressing member;
The pressing member is
bending in a direction in which the heat-generating member and the heat-dissipating member face each other;
The pressing portion is provided on one end side of the pivotal support portion, and the operated portion is provided on the other end side of the pivotal support portion,
The pressing member presses the one toward the other in accordance with the mounting operation of mounting the exterior cover,
A heat-dissipating structure for a heat-generating member in which the heat-generating member and the heat-dissipating member are brought into contact with each other when the exterior cover is attached. A position regulating portion is provided for regulating the position of the acted portion so that it stays at a predetermined position in a state in which the mounting of the exterior cover is released.
The heat dissipation structure for a heat generating member according to claim 1 . The pressing member is provided on a surface that intersects the erecting direction of the exterior cover,
The exterior cover is recessed inwardly at a location where the pressing member is arranged.
The heat dissipation structure for a heat generating member according to claim 1 or 2 . A fixing portion is provided for fixing the pressing member while the heat generating member and the heat radiating member are in contact with each other.
A heat dissipation structure for a heat generating member according to any one of claims 1 to 3 . The pressing member is provided with a protruding portion in which a portion for pressing the one side protrudes toward the other side
A heat dissipation structure for a heat generating member according to any one of claims 1 to 4 . A plurality of the heat-generating members are arranged in tandem along a direction orthogonal to the direction in which the heat-generating members are arranged in parallel with the heat-dissipating member;
The pressing member is
Along with the mounting operation of mounting the exterior cover, the plurality of heat generating members presses the heat radiating member and the one toward the other, thereby bringing the plurality of heat radiating members and the heat radiating member into contact.
A heat dissipation structure for a heat generating member according to any one of claims 1 to 5 . a plurality of the pressing members are arranged so as to correspond to the plurality of heat generating members arranged in series;
A connection part for connecting the plurality of pressing members is provided.
The heat dissipation structure for a heat generating member according to claim 6 . A mounting guide is provided to guide the exterior cover to a desired position.
A heat dissipation structure for a heat generating member according to any one of claims 1 to 7 . The one side is provided with an abutting concave portion with which the pressing member to be pressed abuts.
A heat dissipation structure for a heat generating member according to any one of claims 1 to 8 . An adjustment unit is provided for adjusting the force with which the pressing member presses the one side when the exterior cover is attached.
A heat dissipation structure for a heat generating member according to any one of claims 1 to 9 .

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