WO2016147598A1 - Heat sink device - Google Patents

Abstract

A heat sink device is equipped with a housing (10) having a plate-like outer shape, and a plurality of heat-emitting components (131-163) that are housed in the interior of the housing and ed for emitting heat. The housing has a first chimney portion (111, 123, 111c, 123c) forming a first through-hole (X, Xc) that passes from one side to the other side between two surfaces facing one another in the thickness direction of the housing, and a bottom wall (121) that forms the bottom surface at one of the two surfaces of the housing. Some of the plurality of heat-emitting components are attached to surfaces on the housing-interior side in the first chimney portion, and the heat of these heat-emitting components is released into the first through-hole through the first chimney portion. Others of the plurality of heat-emitting components different from these heat-emitting parts are attached to the surface at the housing interior side of the bottom wall, and the heat of these other heat-emitting components is released to outside the housing through the bottom wall.

Description

Heat dissipation device Cross-reference of related applications

This application is based on Japanese Patent Application No. 2015-50940 filed on March 13, 2015, the contents of which are incorporated herein by reference.

This disclosure relates to a heat dissipation device.

In Patent Document 1, in a heat dissipation structure including a casing that is long in the vertical direction and a heat generating component (such as a semiconductor element) that is housed in the casing, a plate that forms the casing has a vent hole that penetrates in the vertical direction. In this case, a heat generating component is fixed to the inside of the casing of the plate. In the heat dissipation structure of Patent Document 1, the efficiency of natural air cooling heat dissipation is enhanced by the chimney effect of the vent holes.

JP 2001-68880 A

The heat dissipation structure as described above is effective because a large number of heat-generating components can be arranged on the plate forming the air vent in a case where the height in the vertical direction is sufficient, but the air vent is sufficiently high. In a case with no housing, many heat generating components cannot be arranged on the plate, and the heat dissipation effect is not sufficiently enhanced.

In view of the above, it is an object of the present disclosure to make it possible to effectively apply a heat dissipation structure that increases the efficiency of natural air-cooling heat dissipation due to the chimney effect of a vent hole to a casing in which the height of the vent hole is not sufficient. .

One aspect of the present disclosure for achieving the above object includes a casing having a plate-shaped outer shape, and a plurality of heat generating components that are housed in the casing and generate heat. A first chimney for forming a first air vent penetrating from one side of the two surfaces facing the thickness direction of the housing to the other side, and a bottom surface of the two surfaces of the housing. A part of the plurality of heat generating components is attached to a surface on the inner side of the casing of the first chimney. The heat of the heat generating component is released to the first vent through the first chimney, and the surface of the bottom wall on the inner side of the housing has the heat generating component of the plurality of heat generating components. Another part different from a certain part is attached, and the heat of the other part of the heat generating component is outside the casing through the bottom wall. A heat radiating device, characterized in that it is issued.

As described above, in this embodiment, the outer shape of the casing in which the first vent hole penetrates the two surfaces facing the thickness direction of the casing, that is, the first vent hole cannot be sufficiently high. In the case, the heat generating component is also attached to the bottom wall forming the bottom surface. By doing in this way, the air outside the bottom wall is sucked up into the first vent hole by the chimney effect, so that the heat dissipation efficiency of the heat-generating component arranged on the bottom wall is improved, and the heat dissipation efficiency of the entire heat dissipation device is also improved. improves.

The above and other objects, features, and advantages of the present disclosure will become more apparent from the following detailed description with reference to the accompanying drawings. The drawing
It is a figure which shows the use condition of the non-contact electric power feeder in 1st Embodiment. It is a figure which shows the use condition of the non-contact electric power feeder in 1st Embodiment. It is a perspective view of the non-contact electric power feeder 1 in 1st Embodiment. It is a top view of non-contact electric supply device 1 in a 1st embodiment. It is a front view of the non-contact electric power feeder 1 in 1st Embodiment. It is a bottom view of the non-contact electric power feeder 1 in 1st Embodiment. It is a top view of the non-contact electric power feeder 1 of the state which removed the upper surface cover 11 in 1st Embodiment. FIG. 8 is a sectional view taken along line VIII-VIII in FIG. It is a bottom view of the non-contact electric power feeder 1 in 2nd Embodiment. FIG. 10 is a sectional view taken along line XX in FIG. 9. It is sectional drawing of the non-contact electric power feeder 1 in 3rd Embodiment. It is a top view of the apparatus 1 of the state which removed the upper surface cover 11 in 4th Embodiment. FIG. 13 is a sectional view taken along line XIII-XIII in FIG. 12. It is a top view of the non-contact electric power feeder 1 in 5th Embodiment. It is a bottom view of the non-contact electric power feeder 1 in 5th Embodiment. It is a top view of the non-contact electric power feeder 1 of the state which removed the upper surface cover 11 in 5th Embodiment. It is XVII-XVII sectional drawing of FIG. It is a top view of the non-contact electric power feeder 1 of the state which removed the upper surface cover 11 in 6th Embodiment. It is XIX-XIX sectional drawing of FIG. It is sectional drawing of the non-contact electric power feeder 1 in 7th Embodiment. It is sectional drawing of the non-contact electric power feeder 1 in 8th Embodiment. It is a top view of the non-contact electric power feeder 1 of the state which removed the upper surface cover 11 in 9th Embodiment. FIG. 23 is a sectional view taken along line XXIII-XXIII in FIG. It is sectional drawing of the non-contact electric power feeder 1 in 10th Embodiment. It is a top view of the non-contact electric power feeder 1 of the state which removed the upper surface cover 11 in 11th Embodiment. FIG. 26 is a sectional view taken along line XXVI-XXVI in FIG. 25. It is a bottom view of the non-contact electric power feeder 1 in 12th Embodiment. It is XXVIII-XXVIII sectional drawing of FIG. It is sectional drawing of the non-contact electric power feeder 1 in 13th Embodiment. It is sectional drawing of the non-contact electric power feeder 1 in 14th Embodiment. FIG. 16 is a diagram in which heating components 131 to 139 according to the fifteenth embodiment are arranged in order of increasing measurement temperature.

(First embodiment)
The first embodiment will be described below. As shown in FIG. 1, a non-contact power feeding device 1 (corresponding to an example of a heat dissipation device) according to the present embodiment is a device that is installed on the ground such as a parking space and charges the vehicle 2 in a non-contact manner. . The vehicle 2 is an electric vehicle or a hybrid vehicle, and includes a power receiving pad 3, a power receiving circuit 4, and a battery 5.

The power receiving pad 3 is installed at the bottom of the vehicle. This is because, as shown in FIG. 2, the non-contact power feeding device 1 (power transmission pad) and the power receiving pad 3 are opposed to each other with a predetermined interval in the vertical direction during charging.

When the non-contact power feeding device 1 and the power receiving pad 3 face each other with a predetermined interval in the vertical direction and the non-contact power feeding device 1 generates a magnetic flux, the magnetic flux interlinks with the power receiving pad 3. As a result, the power receiving pad 3 generates an induced electromotive force by electromagnetic induction and applies an AC voltage to the power receiving circuit 4.

The power receiving circuit 4 converts the AC voltage output from the power receiving side pad 3 into a DC voltage and applies the DC voltage to the battery 5 to charge the battery 5. The battery 5 is a traveling battery that is operated by applying a voltage to a traveling motor that is a traveling power source of the vehicle.

Since the non-contact power feeding device 1 used for such a purpose is arranged immediately below the bottom of the vehicle 2 when used, it has a thin plate-like outer shape in the vertical direction so as not to collide with the vehicle body of the vehicle 2. Yes.

In addition, since the non-contact power feeding device 1 is installed on the ground, there is a possibility of being submerged in some cases. Therefore, natural air cooling is preferable to forced air cooling (however, forced air cooling is not excluded). Moreover, since the non-contact electric power feeder 1 may be stepped on by the tire of the vehicle 2 depending on the case, it may have high rigidity.

Hereinafter, the structure of the non-contact power feeding device 1 will be described with reference to FIGS. The non-contact power feeding device 1 includes a housing 10 and a plurality of heat generating components (mountings) 131 to 139 that are housed in the housing 10 and generate heat. Each of the heat generating components 131 to 139 is an element that generates heat when energized. For example, a rectifier circuit and a DC-DC converter that constitute a converter circuit, an IGBT that constitutes an inverter circuit, a reactor and a capacitor that constitute a filter circuit, and the like. And the coil 135 and the like.

The converter circuit is a circuit that converts alternating current supplied from a commercial power supply outside the non-contact power feeding device 1 into direct current and supplies it to the inverter circuit. The inverter circuit is a circuit that converts the direct current supplied from the converter circuit into a high-frequency rectangular wave alternating current and supplies the alternating current to the coil 135 through the filter circuit. The filter circuit is a circuit that removes a predetermined frequency component included in the alternating current supplied from the inverter circuit. The coil 135 generates magnetic flux for generating the above-described dielectric electromotive force in the power receiving circuit 4 when AC is supplied from the converter circuit via the filter circuit.

Note that a power source (not shown) for energizing the heat generating components 131 to 139 is disposed outside the housing 10 and is connected to the inside of the housing 10 from the power source via the cable 6 (see FIG. 1). Electric power is supplied to the heat generating components 131 to 139. Note that a hole (not shown) through which the cable 6 penetrates the inside and outside of the housing 10 is formed in the upper surface cover 11 or the component housing portion 12 of the housing 10. The gap between the hole and the cable 6 is sealed with a sealing material so that no gap is formed.

As shown in FIGS. 3 to 6, the casing 10 has a flat plate-like outer shape, and the thickness direction thereof is the vertical direction. The housing 10 includes an upper surface cover 11 and a component housing portion 12.

The upper surface cover 11 is a flat plate-like member corresponding to the upper lid of the housing 10, and the upper surface of the upper surface cover 11 (surface opposite to the inside of the upper surface cover 11) corresponds to the upper surface of the housing 10. Further, as shown in FIGS. 3 and 4, only one hole forming portion 111 is formed in the central portion of the top cover 11 so as to surround the substantially rectangular cutout.

Since the upper cover 11 is not required to be as thermally conductive as the component housing portion 12, a non-magnetic and non-conductive material such as resin or ceramic is preferable (however, the possibility other than ceramic and resin is excluded). Do not mean).

As shown in FIGS. 7 and 8, the component accommodating portion 12 is a member that accommodates the heat generating components 131 to 139. As shown in FIGS. 3, 5, and 6, the bottom wall 121 and the outer wall 122 are provided. The inner wall 123 is provided.

The bottom wall 121 is a flat plate-like member corresponding to the bottom plate of the housing 10 and has substantially the same shape as the top cover 11. The bottom surface of the bottom wall 121 (the surface opposite to the inside of the top cover 11) corresponds to the bottom surface of the housing 10. As shown in FIGS. 6 and 7, only one hole forming portion 121 a is formed at the center of the bottom wall 121 so as to surround a substantially rectangular cutout equivalent to the hole forming portion 111 of the top cover 11. ing.

Further, as shown in FIGS. 3, 5, and 8, the bottom wall 121 has support pillars 61 to 64 standing on the ground supported at the four corners of the bottom surface. Further, as shown in FIGS. 5 and 6, support pillars 65 to 68 which stand on the ground separately from each other are arranged around the hole forming portion 121 a of the bottom wall 121. The support columns 65 to 68 arranged around the chimney in this way are provided in order to ensure load resistance and rigidity of the central portion of the non-contact power feeding device 1.

Thus, the casing 10 is installed on the ground via the support columns 61 to 68, and a lower air passage is formed between the bottom surface of the bottom wall 121 and the ground (that is, outside the bottom surface). These support columns are members that form a lower air passage communicating with the vent hole X (corresponding to an example of the first vent hole).

The outer wall 122 is a member that extends upward from the outer edge of the bottom wall 121 around the entire outer edge of the bottom wall 121, and is formed integrally with the bottom wall 121.

The inner wall 123 is a member that extends upward from the hole forming portion 121 a on the entire circumference of the hole forming portion 121 a of the bottom wall 121, and is formed integrally with the bottom wall 121. In this embodiment and other embodiments, the bottom wall 121 and the inner wall 123 are integrally formed and connected, but in the cross-sectional views of each embodiment, the boundary between the bottom wall 121 and the inner wall 123 is Virtually indicated by a dotted line.

The entire component housing portion 12 is made of a material having high thermal conductivity and high rigidity, and is made of, for example, a non-magnetic metal (for example, copper, aluminum, austenitic stainless steel) that hardly generates heat due to a change in magnetic flux generated by the coil. Or it may be made of a magnetic metal (for example, iron). Or you may consist of resin. Nonmagnetic metals and resins correspond to examples of nonmagnetic materials.

When the upper surface cover 11 is joined to the component housing portion 12 with screws or the like, the component housing portion 12 is covered. At this time, the entire outer edge of the bottom surface of the top cover 11 contacts the entire periphery of the upper end of the outer wall 122, and the entire periphery of the bottom surface of the hole forming portion 111 of the top cover 11 contacts the entire periphery of the upper end of the inner wall 123. To do.

At this time, the hole forming portion 111 of the inner wall 123 and the upper surface cover 11 has one chimney portion (first first portion) that forms one air hole X penetrating from the plate-shaped bottom surface side of the housing 10 to the upper surface side. Corresponding to an example of a chimney). The notch surrounded by the hole forming part 121a also communicates with the vent hole X.

Here, the plate-shaped bottom surface of the housing 10 is the bottom surface of the bottom wall 121, and the plate-shaped top surface of the housing 10 is the top surface of the top cover 11. The plate-shaped bottom surface and top surface of the housing 10 are respectively one side and the other of two surfaces that form the outer shape of the housing 10 and face each other in the thickness direction of the housing 10. As a result, the lower air passage below the housing 10 and the vent hole X communicate with each other, and the space above the housing 10 and the vent hole X communicate with each other.

The external dimensions of the housing 10 are, for example, a length (height) in the thickness direction (vertical direction in FIG. 8) of 5 cm, a length in the width direction (horizontal direction in FIG. 4) of 70 cm, and a depth direction ( The length in the vertical direction in FIG. 4 is 60 cm.

Here, the arrangement of the heat generating components 131 to 139 in the component accommodating portion 12 will be described. As shown in FIGS. 7 and 8, each of the heat generating components 131, 132, 133, and 134 is joined to the inner side surface of the inner wall 123 of the inner wall 123 through grease so as to transfer heat, and The inner surface is fixed by a bracket and a screw (not shown). Alternatively, each of the heat generating components 131, 132, 133, and 134 is bonded and fixed so that one surface can be transferred to the inner surface via an adhesive. Thereby, the heat generated by the heat generating components 131, 132, 133, and 134 is transmitted to the inner wall 123 via grease or adhesive, and the heat is released from the inner wall 123 to the vent hole X.

Further, as shown in FIGS. 7 and 8, the coil 135 is wound around the inner wall 123 below the heat generating components 131, 132, 133, and 134. The inner peripheral side of the coil 135 is joined to the inner side surface of the inner wall 123 of the inner wall 123 via grease so as to be able to transfer heat, and further, the inner side surface is connected to the inner side surface by brackets and screws (not shown). Fixed. Thereby, the heat generated by the coil 135 is transferred to the inner wall 123 through the grease, and the heat is released from the inner wall 123 to the vent hole X.

In this way, certain parts 131, 132, 133, 134, and 135 among the plurality of heat generating components 131 to 139 are attached to the inner side wall 123 on the inner surface of the housing 10. The heat of these heat generating components 131, 132, 133, 134, 135 is released to the outside of the housing 10 through the inner wall 123.

Further, as shown in FIG. 8, each of the heat generating components 136, 137, 138, and 139 has a surface below the coil 135, and one surface of the heat generating components 136, 137, 138, and 139 transmits heat to the inner surface of the casing 10 through the grease. Further, they are joined together and further fixed to the inner side surface by a bracket, a screw or the like (not shown). Alternatively, each of the heat generating components 136, 137, 138, and 139 is bonded and fixed so that one surface thereof can transfer heat to the inner surface via an adhesive. Thereby, the heat generated by the heat generating components 136, 137, 138, and 139 is transmitted to the bottom wall 121 via grease or adhesive, and the heat is released from the bottom wall 121 to the lower air passage below the bottom wall 121. .

As described above, the other parts 136, 137, 138, and 139 of the plurality of heat generating components 131 to 139 are attached to the surface of the bottom wall 121 on the inner side of the housing 10. The heat of these heat generating components 136, 137, 138, and 139 is released to the outside of the housing 10 through the bottom wall 121.

As described above, in the present disclosure, in the casing 10 in which the length (height) in the thickness direction of the vent hole X cannot be sufficiently obtained, not only the chimney portion that forms the vent hole X but also the bottom wall 121 that forms the bottom surface. In addition, the heat generating components 136 to 139 are attached.

In this way, when the heat of the heat generating components 131, 132, 133, 134, 135 is released into the vent hole X through the inner wall 123 as described above, the air in the vent hole X becomes higher than the outside air. Ascending airflow is generated in the vent hole X.

Due to such a chimney effect, as shown by the arrow in FIG. 8, the air in the ventilation hole X rises and flows out to the upper side of the housing 10, and the air in the lower air passage below the bottom wall 121 passes therethrough. Sucked into pore X. As a result, while the heat generating components 131 to 139 are energized (during charging of the battery 5), the air in the lower air passage on the lower side of the bottom wall 121 flows into the vent hole X and is further released into the space above the casing 10. The phenomenon is sustained. That is, the heat generated by the heat generating components 131 to 139 can be concentrated in the vent hole X, and the chimney (natural convection) effect can be improved.

Therefore, the heat dissipation efficiency of the heat generating components 136, 137, 138, 139 disposed on the bottom wall 121 is improved, and the heat dissipation efficiency of the heat dissipation device as a whole is also improved. That is, not only the inner wall 123 but also the bottom wall 121 can be used as a heat radiating portion.

In the present embodiment, the heat generating components 131, 132, 133, 134, and 135 are fixed to the inner wall 123. By doing in this way, the inner wall 123 can be used also for uses other than a heat radiating part (use as a fixed part).

In addition, the surface of the inner wall 123 on the outer side (the side opposite to the inner side of the housing 10) is smoothly connected to the bottom surface of the bottom wall 121 (the surface on the opposite side to the inner side of the housing 10). Yes. That is, the lower part of the chimney part has an R shape. More specifically, in any cross section including the outer surface of the inner wall 123 and the bottom surface of the bottom wall 121, the outer surface and the inner surface are connected smoothly, that is, without a sharp portion.

This makes it easier for air to flow from the lower air passage on the lower side of the bottom wall 121 into the vent hole X. As a result, the flow rate of air flowing through the vent hole X increases, and as a result, non-contact power feeding. The heat dissipation efficiency of the device 1 is increased.
(Second Embodiment)
Next, a second embodiment will be described. In the present embodiment, a plurality of heat radiation fins (for example, heat radiation fins 124a and 124b) shown in FIGS. 9 and 10 are added to the contactless power supply device 1 of the first embodiment. In this embodiment, when the casing 10 is installed, the supporting pillars 61 to 68 are not used, and the casing 10 is installed by bringing these fins into direct contact with the ground.

8 and 9, these fins (38 fins in the example of FIG. 9) are arranged on the bottom side of the bottom wall 121 (on the side opposite to the inside of the housing 10). More specifically, each of these fins is a plate-shaped member, and is formed so as to rise perpendicular to the bottom wall 121.

These fins are made of the same material as the bottom wall 121, and may be formed integrally with the bottom wall 121, or may be formed as separate members and then joined by welding or the like.

Furthermore, the heights of these fins (fin lengths in the thickness direction of the casing 10) are all the same. Therefore, when the non-contact power feeding device 1 is installed on a horizontal ground with these fins facing down, the bottom wall 121 is horizontal, and the thickness direction (direction perpendicular to the plate surface) of these fins is horizontal. Match.

Further, the longitudinal direction of these fins extends radially around the hole forming portion 121a and the vent hole X as shown in FIG. Thus, when the air in the lower air passage on the lower side of the bottom wall 121 flows into the vent hole X while the heat generating components 131 to 139 are energized, the air flows through the lower air passage along these fins. The fins hardly interfere with the air in the lower air passage being sucked into the vent hole X.

Further, heat generated by the heat generating components 136 to 139 attached to the bottom wall 121 by these fins is transmitted to these fins via the bottom wall 121 and further to the lower air passage, so that the heat transfer area is reduced. Rise. Therefore, the heat dissipation efficiency of the heat generating components 136, 137, 138, 139 disposed on the bottom wall 121 is further improved.

Further, since these fins are members that form a lower air passage communicating with the vent hole X on the outer side (lower side) of the bottom surface of the housing 10, the support columns 61 to 68 are not necessary. Further, the presence of these fins increases the rigidity of the casing 10 (for example, rigidity that does not distort even when stepped on by the vehicle 2).
(Third embodiment)
Next, a third embodiment will be described with reference to FIG. FIG. 11 is a cross-sectional view represented in the same format as FIG. In the present embodiment, the structure of the component housing portion 12 is changed with respect to the contactless power supply device 1 of the first embodiment. Specifically, the overall shape of the component housing portion 12 is not changed, but the material is partially changed.

More specifically, the whole of the bottom wall 121 and the outer wall 122 is made of a material having high thermal conductivity and high rigidity, as in the example of the first embodiment. It is made of a non-magnetic metal (for example, aluminum) that does not easily generate heat due to a change in magnetic flux generated.

Further, the inner wall 123 has a low thermal conductivity as a whole of the lower part 123a (corresponding to an example of a part of the chimney) continuous from the bottom wall 121, as in the example of the first embodiment. Made of highly rigid material. For example, it is made of a nonmagnetic metal (for example, aluminum) that does not easily generate heat due to a change in magnetic flux generated by the coil.

However, the upper portion 123b (corresponding to an example of the other portion of the chimney) connected to the lower portion 123a of the inner wall 123 and extending upward and connected to the top cover 11 is made of resin (for example, ABS resin). ). Note that the bonding method of the lower portion 123a and the upper portion 123b may be bonding using an adhesive, or other known bonding technique using a laser or the like.

In addition, since the upper part 123b is made of resin, it is inferior to the lower part 123a in terms of rigidity and thermal conductivity. However, in terms of suppressing heat generation, the upper portion 123b made of resin is more advantageous than the lower portion 123a made of nonmagnetic metal. That is, as in the present embodiment, by using the resin near the upper outlet of the vent hole X in the chimney, heat generation of the component housing portion 12 due to the magnetic flux can be suppressed.

In addition, as for the heat generating components 131 to 135 attached to the inside of the housing 10 on the inner side wall 123, as illustrated in FIG. 11, at least a part of each is joined to the lower portion 123a. . In this way, the heat generated in the heat generating components 131 to 135 is transferred to the lower portion 123a without passing through the upper portion 123b having a low thermal conductivity, and thus resin is used for the upper portion. In this case, deterioration of the heat dissipation performance can be suppressed. Note that the entire top cover 11 of the present embodiment may be made of a nonmagnetic and nonconductive material such as resin or ceramic.
(Fourth embodiment)
Next, a fourth embodiment will be described. In the present embodiment, as shown in FIGS. 12 and 13, the coil 135 is eliminated and the heat generating components 140 to 149 are added to the non-contact power feeding apparatus 1 of the first embodiment.

Each of the heat generating components 140 to 149 is joined below the heat generating components 131 to 134 so that heat can be transferred to a surface of the bottom wall 121 on the inner side of the housing 10 via grease, and is not shown. It is fixed to the inner surface with brackets and screws. Alternatively, each of the heat generating components 140 to 149 is bonded and fixed so that one surface can be transferred to the inner surface via an adhesive. As a result, the heat generated by the heat generating components 140 to 149 is transmitted to the bottom wall 121 via grease or adhesive, and the heat is released from the bottom wall 121 to the lower air passage below the bottom wall 121.

As described above, the heat generating components 136 to 149 (corresponding to another example of the plurality of heat generating components) are attached to the surface of the bottom wall 121 on the inner side of the housing 10. The heat of these heat generating components 136, 137, 138, and 139 is released to the outside of the housing 10 through the bottom wall 121.

Note that the device 1 (corresponding to an example of a heat dissipation device) of the present embodiment is a device other than the non-contact power feeding device. For example, the device 1 may be a computer or a communication device.
(Fifth embodiment)
Next, a fifth embodiment will be described with reference to FIGS. Whereas the single vent X is formed in the devices 1 of the first to fourth embodiments, the non-contact power feeding device 1 of the present embodiment is formed with two vents Xc and Xd. . The application of the contactless power supply device 1 of the present embodiment is the same as that of the first embodiment.

As shown in FIGS. 14 to 17, the casing 10 has a flat plate-like outer shape, and the thickness direction thereof is the vertical direction. The housing 10 includes an upper surface cover 11 and a component housing portion 12.

The upper surface cover 11 is a flat plate-like member corresponding to the upper lid of the housing 10, and the upper surface of the upper surface cover 11 corresponds to the upper surface of the housing 10. Further, as shown in FIG. 14, the upper surface cover 11 is formed with two hole forming portions 111c and 111d surrounding a substantially rectangular cutout. The materials and external dimensions of the top cover 11 and the component housing part 12 are the same as those in the first to fourth embodiments.

As shown in FIGS. 16 and 17, the component accommodating portion 12 is a member that accommodates a plurality of heat generating components 150 to 159 and a coil 135 (which is also a heat generating component), and is illustrated in FIGS. 15, 16, and 17. As shown, the bottom wall 121, the outer wall 122, the inner side wall 123c, and the inner side wall 123d are provided.

The bottom wall 121 is a flat plate-like member corresponding to the bottom plate of the housing 10 and has substantially the same shape as the top cover 11. The bottom surface of the bottom wall 121 corresponds to the bottom surface of the housing 10. As shown in FIGS. 15 and 17, the bottom wall 121 has two hole forming portions 121 c and 121 d surrounding the substantially rectangular cutout equivalent to the hole forming portions 111 c and 111 c of the top cover 11. Is formed.

Further, as shown in FIGS. 15 and 17, the bottom wall 121 is supported by support pillars 61 to 64 standing on the ground at the four corners of the bottom surface. Thus, the housing 10 is installed on the ground via the support columns 61 to 64, and a lower air passage is formed between the bottom surface of the bottom wall 121 and the ground (that is, outside the bottom surface). These support columns are members that form one lower air passage that communicates with both of the vent holes Xc and Xd.

The outer wall 122 is a member that extends upward from the outer edge of the bottom wall 121 around the entire outer edge of the bottom wall 121, and is formed integrally with the bottom wall 121. The inner wall 123 c is a member that extends upward from the hole forming portion 121 c on the entire circumference of the hole forming portion 121 c of the bottom wall 121, and is formed integrally with the bottom wall 121. The inner side wall 123d is a member extending upward from the hole forming portion 121d on the entire circumference of the hole forming portion 121d of the bottom wall 121, and is formed integrally with the bottom wall 121.

When the upper surface cover 11 is joined to the component housing portion 12 with screws or the like, the component housing portion 12 is covered. At this time, the entire outer periphery of the bottom surface of the top cover 11 contacts the entire periphery of the upper end of the outer wall 122. At this time, the entire circumference of the bottom surface of the hole forming portion 111c of the top cover 11 and the entire circumference of the upper end of the inner wall 123c are in contact with each other. At this time, the entire periphery of the bottom surface of the hole forming portion 111d of the top cover 11 and the entire periphery of the upper end of the inner wall 123d are in contact with each other.

At this time, the inner wall 123c of the bottom wall 121 and the hole forming portion 111c of the top cover 11 form one chimney that forms one vent hole Xc penetrating from the plate-shaped bottom surface side of the housing 10 to the top surface side. (Corresponding to an example of a first chimney).

Further, at this time, the inner wall 123d of the bottom wall 121 and the hole forming portion 111d of the top cover 11 form one ventilation hole Xd penetrating from the plate-shaped bottom surface side of the housing 10 to the top surface side. A chimney (corresponding to an example of a second chimney) is configured.

Here, the plate-shaped bottom surface of the housing 10 is the bottom surface of the bottom wall 121, and the plate-shaped top surface of the housing 10 is the top surface of the top cover 11. The plate-shaped bottom surface and top surface of the housing 10 are two surfaces that form the outer shape of the housing 10 and face each other in the thickness direction of the housing 10. In this way, the lower air passage through the bottom of the casing 10 communicates with the two pores Xc and Xd, and the space above the casing 10 has two vents Xc and Xd. Communicate.

Here, the arrangement of the heat generating components 131 to 139 in the component accommodating portion 12 will be described. As shown in FIGS. 16 and 17, each of the heat generating components 152 to 155 is joined to the inner side wall 123c of the inner wall 123c via grease so that heat can be transferred, and a bracket (not shown) And is fixed to the inner surface by screws or the like. Alternatively, each of the heat generating components 152 to 155 is joined and fixed so that one surface can be transferred to the inner surface via an adhesive. Thereby, the heat generated by the heat generating components 152 to 155 is transmitted to the inner side wall 123c via grease or adhesive, and the heat is released from the inner side wall 123c to the vent hole Xc.

In addition, each of the heat generating components 156 to 159 is bonded to the inner side surface of the inner wall 123d of the inner wall 123d through grease so as to be able to transfer heat, and is further connected to the inner side by brackets, screws, and the like (not shown). It is fixed to the surface. Alternatively, each of the heat generating components 156 to 159 is bonded and fixed so that one surface can be transferred to the inner surface via an adhesive. Thereby, the heat generated by the heat generating components 156 to 159 is transmitted to the inner side wall 123d via the grease or the adhesive, and the heat is released from the inner side wall 123d to the vent hole Xd.

Also, as shown in FIGS. 16 and 17, the coil 135 is wound around the inner wall 123c and the inner wall 123d below the heat generating components 153 to 159. The inner peripheral side of the coil 135 is joined to the inner side surface of the casing 10 through the grease so that heat can be transferred to the inner side wall 123c, 123d. Fixed to the surface. Thereby, the heat generated by the coil 135 is transmitted to the inner side walls 123c and 123d through the grease, and the heat is released from the inner side walls 123c and 123d to the vent holes Xc and Xd.

As described above, some of the plurality of heat generating components 135 and 150 to 159 are attached to the inner surface of the housing 10 among the inner side walls 123c and 123d. The heat of the heat generating components 135 and 153 to 159 is released to the outside of the housing 10 through the inner side walls 123c and 123d.

In addition, as shown in FIG. 17, each of the heat generating components 150 and 151 is joined to a surface of the bottom wall 121 on the inner side of the casing 10 via grease so that heat can be transferred below the coil 135. Further, it is fixed to the inner surface by a bracket, a screw or the like (not shown). Alternatively, each of the heat generating components 150 and 151 is bonded and fixed so that one surface can transfer heat to the inner surface via an adhesive. Thereby, the heat generated by the heat generating components 150 and 151 is transmitted to the bottom wall 121 via grease or adhesive, and the heat is released from the bottom wall 121 to the lower air passage below the bottom wall 121.

As described above, the other parts 150 and 151 of the plurality of heat generating components 135 and 150 to 159 are attached to the surface of the bottom wall 121 on the inner side of the housing 10. The heat of these heat generating components 150 and 151 is released to the outside of the housing 10 through the bottom wall 121.

As described above, in the present disclosure, not only the chimney portion that forms the vent holes Xc and Xd but also the bottom surface is formed in the casing 10 in which the length (height) in the thickness direction of the vent holes Xc and Xd cannot be sufficiently obtained. The heat generating components 150 and 151 are also attached to the bottom wall 121 to be performed.

In this way, as described above, when the heat of the heat generating components 135 and 152 to 159 is released into the vent holes Xc and Xd through the inner wall 123, the air in the vent holes Xc and Xd becomes higher than the outside air. Ascending airflow is generated in the vent holes Xc and Xd.

Due to the chimney effect, as shown by the arrows in FIG. 17, the air in the vent holes Xc and Xd rises and flows out to the upper side of the housing 10, and the air in the lower air passage below the bottom wall 121. Is sucked up into the vent holes Xc and Xd. As a result, while the heat generating components 135 and 150 to 159 are energized (while the battery 5 is being charged), the air in the lower air passage on the lower side of the bottom wall 121 flows into the vent holes Xc and Xd. The phenomenon of being released into the space is sustained. That is, the heat generated by the heat generating components 135 and 150 to 159 can be concentrated in the vent hole X, and the chimney (natural convection) effect can be improved.

Therefore, the heat dissipation efficiency of the heat generating components 150 and 151 disposed on the bottom wall 121 is also improved, and the heat dissipation efficiency of the heat dissipation device as a whole is also improved. That is, not only the inner side walls 123c and 123c but also the bottom wall 121 can be used as a heat radiating portion.

In the present embodiment, the heat generating components 135 and 152 to 159 are fixed to the inner side walls 123c and 123d. By doing in this way, inner wall 123c, 123d can be used also for uses other than a thermal radiation part (use as a fixing | fixed part).

Moreover, since the two contact holes Xc and Xd are formed in the non-contact power feeding device 1 of the present embodiment, the heat radiation efficiency of the heat radiation portion can be increased and the heat radiation efficiency can be improved by the chimney effect.

In the present embodiment, the vent hole Xc corresponds to an example of a first vent hole, and the vent hole Xd corresponds to an example of a second vent hole. Further, the chimney part forming the vent hole Xc corresponds to an example of the first chimney part, and the chimney part forming the vent hole Xd corresponds to an example of the second chimney part.
(Sixth embodiment)
Next, a sixth embodiment will be described. In the present embodiment, seal members 125 and 126 are added to the non-contact power feeding device 1 of the first embodiment.

As shown in FIGS. 18 and 19, the inner peripheral seal member 125 is an elastic member (packing) such as rubber, and is embedded in a groove formed in the upper end portion of the inner wall 123. When the component housing portion 12 is covered with the upper surface cover 11, the inner peripheral seal member 125 contacts the bottom surface of the hole forming portion 111. Thereby, the inner peripheral seal member 125 can seal the gap between the inner wall 123 and the hole forming portion 111, and water or the like can be prevented from entering the housing 10 through this gap.

As shown in FIGS. 18 and 19, the outer peripheral seal member 126 is an elastic member (packing) such as rubber, and is embedded in a groove formed in the upper end portion of the outer wall 122. When the component housing portion 12 is covered with the top cover 11, the outer peripheral seal member 126 contacts the bottom surface of the outer edge portion of the top cover 11. Thereby, the outer periphery sealing member 126 can seal the gap between the outer wall 122 and the upper surface cover 11, and water or the like can be prevented from entering the housing 10 through this gap.

As described above, by interposing the seal members 125 and 126 between the upper surface cover 11 and the component housing portion 12, the sealing performance of the housing 10 can be improved, and the housing 10 can have a waterproof structure. In the present embodiment, the top cover 11 corresponds to an example of a first member, and the component housing portion 12 corresponds to an example of a second member.
(Seventh embodiment)
Next, a seventh embodiment will be described with reference to FIG. 20 is a cross-sectional view represented in the same format as FIG. In the present embodiment, as shown in FIG. 20, the shape of the inner wall 123 is changed with respect to the non-contact power feeding device 1 of the first embodiment.

The outer (outside of the housing 10 inside) surface of the inner wall 123 of this embodiment is the same as the inner wall 123 of the first embodiment, and the bottom surface of the bottom wall 121 (opposite of the inside of the housing 10). Smoothly connected to the side surface). That is, the lower part of the chimney part has an R shape.

More specifically, in any cross section including the outer surface of the inner wall 123 and the bottom surface of the bottom wall 121, the outer surface and the inner surface are smoothly connected, that is, without a sharp portion.

Furthermore, the outer surface of the inner wall 123 and the bottom surface of the bottom wall 121 of this embodiment are connected with a gentler curve than in the first embodiment. That is, the maximum value of the Gaussian curvature at the connection portion between the outer surface of the inner wall 123 and the bottom surface of the bottom wall 121 is smaller in the present embodiment than in the first embodiment. For example, the maximum value of the Gaussian curvature at the connection portion between the outer surface of the inner wall 123 and the bottom surface of the bottom wall 121 is, for example, 400 [m ⁻² ] in the present embodiment.

This makes it easier for air to flow from the lower air passage on the lower side of the bottom wall 121 into the vent hole X. As a result, the flow rate of air flowing through the vent hole X increases, and as a result, non-contact power feeding. The heat dissipation efficiency of the device 1 is increased.
(Eighth embodiment)
Next, an eighth embodiment will be described with reference to FIG. 21 is a cross-sectional view represented in the same format as FIG. In this embodiment, as shown in FIG. 21, the shape of the bottom wall 121 is changed with respect to the non-contact electric power feeder 1 of 1st Embodiment. The bottom wall 121 of the present embodiment is configured such that a part of its bottom surface rises as it approaches the inner wall 123 (closer to the upper surface of the top cover 11).

That is, the bottom surface of the inner wall 123 in the portion has a shape obtained by cutting off the upper end of a quadrangular pyramid having one point in the vent X as a vertex.

This makes it easier for air to flow from the lower air passage on the lower side of the bottom wall 121 into the vent hole X. As a result, the flow rate of air flowing through the vent hole X increases, and as a result, non-contact power feeding. The heat dissipation efficiency of the device 1 is increased.

In the present embodiment, as shown in FIG. 21, the bottom wall 121 and the inner wall 123 are not smooth and are connected with a sharp point as a boundary, but as smoothly as in the seventh embodiment. It may be connected.
(Ninth embodiment)
Next, a ninth embodiment will be described. In the present embodiment, as shown in FIGS. 22 and 23, a chimney fin 127 is added to the non-contact power feeding device 1 of the first embodiment.

The chimney fin 127 is a heat radiating fin attached in contact with the inner wall 123 in the vent hole X. The chimney fin 127 has a shape that looks like a mesh when viewed from the direction penetrating the vent hole X, and has a plurality of small holes that penetrate the vent hole X from the bottom surface side to the top surface side of the housing 10. It has a honeycomb shape that is divided into rooms.

The entire chimney fin 127 is made of a material having high thermal conductivity and high rigidity, similar to the inner wall 123, for example, a non-magnetic metal (for example, copper, aluminum, etc.) that does not easily generate heat due to a change in magnetic flux generated by the coil. , Austenitic stainless steel) or a magnetic metal (for example, iron). The chimney fin 127 may be formed integrally with the inner wall 123 or may be formed as a separate member.

As a result, during the energization of the heat generating components 131 to 139, the air flowing through the vent hole X is connected to the heat generating components 131 to 135 kicked by the inner wall 123 due to the presence of the chimney fin 127. Heat exchange is further promoted. As a result, the heat dissipation efficiency is improved.
(10th Embodiment)
Next, a tenth embodiment will be described with reference to FIG. 24 is a cross-sectional view represented in the same format as FIG. The device 1 (corresponding to an example of a heat dissipation device) of the present embodiment is different from the non-contact power supply device 1 of the first embodiment in the housing 10 in place of the heat generating components 131 to 135, 161, 162, 163 and heat spreaders 201, 202 are additionally arranged. Each of the heat spreaders 201 and 202 corresponds to an example of a heat transfer member.

The heat spreaders 201 and 202 are made of a plate-shaped material having high thermal conductivity, and may be made of, for example, a non-magnetic metal (for example, copper, aluminum, austenitic stainless steel), or a magnetic metal (for example, Iron).

Each of the heat spreaders 201 and 202 is joined to the inner side surface of the inner wall 123 of the inner wall 123 through grease so that heat can be transferred, and further to the inner side surface by brackets and screws (not shown). Fixed. Alternatively, each of the heat spreaders 201 and 202 is bonded and fixed so that the side surface of the heat spreaders 201 and 202 can be transferred to the inner surface via an adhesive. Alternatively, the heat spreaders 201 and 202 may be formed integrally with the inner wall 123.

Heat generating parts (mounting parts) 160, 161, 162, and 163 are elements that generate heat when energized, equivalent to the heat generating parts 131 to 134.

Each surface of each of the heat generating parts 160 and 161 is joined to the upper surface of the heat spreader 202 via grease so as to be able to transfer heat, and is further fixed to the upper surface by a bracket, a screw or the like (not shown). Alternatively, each of the heat generating components 160 and 161 is bonded and fixed so that one surface can be transferred to the upper surface via an adhesive. Thereby, the heat generated by the heat generating components 160 and 161 is transmitted to the inner wall 123 through the heat spreader 202, and the heat is released from the inner wall 123 to the vent hole X.

Each surface of each of the heat generating parts 162 and 163 is joined to the upper surface of the heat spreader 201 via grease so as to be able to transfer heat, and is further fixed to the upper surface by a bracket, a screw or the like (not shown). Alternatively, each of the heat generating components 162 and 163 is bonded and fixed so that one surface can be transferred to the upper surface via an adhesive. Thereby, the heat generated by the heat generating components 162 and 163 is transmitted to the inner wall 123 via the heat spreader 201, and the heat is released from the inner wall 123 to the vent hole X.

In this embodiment as well, the heat generating components 160 and 161 are indirectly attached and fixed to the inner side surface of the inner side wall 123 through the heat spreader 202 so that heat can be transferred. Further, the heat generating components 161 and 162 are indirectly attached and fixed to the inner side surface of the inner wall 123 through the heat spreader 201 so that heat can be transferred.

As described above, even when the number of heat generating components in the housing 10 is large and it is necessary to arrange the heat generating components 160 to 163 in the upper and lower layers as shown in FIG. 24, the upper heat generating components 160 to 163 can be attached to the heat spreaders 201 and 202. . In this way, the heat generated in the upper heat generating components 160 to 163 is released to the chimney through the heat spreaders 201 and 202 and the inner wall 123, so that natural convection due to the chimney effect is promoted to dissipate heat. The effect can be enhanced.

In addition, since the apparatus 1 of this embodiment is not provided with the coil 135, it is another apparatus which is not a non-contact electric power supply apparatus, However, The structure using the heat spreaders 201 and 202 like this embodiment is non-contact electric power supply. It is also applicable to the device.
(Eleventh embodiment)
Next, an eleventh embodiment will be described. In the present embodiment, as shown in FIGS. 25 and 26, a chimney fan 128 is added to the non-contact power feeding apparatus 1 of the first embodiment.

The chimney fan 128 is mounted in the vent hole X, and rotates by receiving power supply from a power source (not shown), thereby generating an updraft in the vent hole X and increasing the air in the vent hole X. It is a blower fan that promotes. The chimney fan 128 further increases the speed of the air in the ventilation hole X, and as a result, the heat dissipation efficiency is improved.
(Twelfth embodiment)
Next, a twelfth embodiment will be described. In this embodiment, plasma actuators 211 to 214 are added to the non-contact power feeding apparatus 1 of the first embodiment as shown in FIGS. The plasma actuators 211 to 214 are fixed to the bottom wall 121 with, for example, an adhesive.

27 and 28, the plasma actuator 212 includes a plate-like 212a made of a dielectric material such as resin or ceramic, and a back electrode 212b and a surface electrode 212c that sandwich the insulator 212a from both surfaces.

The back electrode 212b is disposed on the upper surface side (side closer to the bottom wall 121) of both surfaces (upper surface and bottom surface) of the insulator 212a. The surface electrode 212c is disposed on the bottom surface side (the side far from the bottom wall 121) of the insulator 212a.

In such a plasma actuator 212, an AC power source (not shown) is connected to the front surface electrode 212c and the back surface electrode 212b to generate an AC electric field, so that the edge of the surface electrode 212c extends along the surface of the insulator 212a. A plasma jet is generated. The plasma jet generated in this manner induces ambient air and generates an air flow in the same direction as the plasma jet. Therefore, by supplying the front electrode 212c and the back electrode 212b alternating current of the plasma actuator 212, an air flow that guides air in the direction of the vent hole X is generated in the lower air passage for the arrow in FIG.

The same can be said for the plasma actuator 214 if the insulator 212a, the back electrode 212b, and the front electrode 212c are replaced with the insulator 214a, the back electrode 214b, and the front electrode 214c. The same applies to the plasma actuator 211 if the insulator 212a, the back electrode 212b, and the front electrode 212c are replaced with the insulator 211a, a back electrode and a front electrode 214c (not shown). The same can be said for the plasma actuator 213 if the insulator 212a, the back electrode 212b, and the front electrode 212c are replaced with the insulator 213a, a back electrode and a front electrode 213c (not shown).

In this way, the air flow to the vent hole X can be promoted, and as a result, the heat dissipation efficiency of the non-contact power feeding device 1 can be improved.

The same effect can be obtained even if the plasma actuators 211 to 214 are all or part of the plasma actuators 211 and 214 and are installed in the vent hole X so as to guide the air from the bottom to the top.
(13th Embodiment)
Next, a thirteenth embodiment will be described. As shown in FIG. 29, the present embodiment is that a canopy 203 (corresponding to an example of a cover member) is added to the non-contact power feeding apparatus 1 of the first embodiment.

The canopy 203 includes a main body 203a on a flat plate that does not allow air to pass through and rod- like columns 203b and 203c. The main body 203a is disposed at a position covering the upper surface side of the vent hole X from above, and is supported by the columns 203b and 203c. The main body 203a is disposed above the upper surface cover 11 by this support. As a result, the air flowing from the bottom to the top through the vent hole X hits the main body 203a and flows out of the housing 10 through the gap between the main body 203a and the top cover 11 as shown by the arrows.

Thus, since the upper end of the vent hole X is covered by the main body 203a so as to allow air to flow, the possibility of foreign matter entering the vent hole X can be reduced. Moreover, since the inside of the vent hole X becomes high temperature, it is possible to reduce the possibility that a person puts a part of the body (for example, a finger) into the vent hole X. The canopy 203 may be detachable from the housing 10 or may have a mechanism capable of opening and closing the main body 203a.
(14th Embodiment)
Next, a fourteenth embodiment will be described. In this embodiment, as shown in FIG. 30, a net 204 (corresponding to an example of a cover member) through which air passes is added to the non-contact power feeding apparatus 1 of the first embodiment.

The net 204 is fixed to the hole forming part 111 at the upper end of the air hole X, and is disposed so as to cover and close the air hole X.

In this manner, the air flowing from the bottom to the top through the vent hole X passes through the net 204 and flows out of the housing 10 as indicated by the arrows.

As described above, since the upper end of the air hole X is closed by the net 204 by the main body 203a, the possibility of foreign matters entering the air hole X can be reduced. Moreover, since the inside of the vent hole X becomes high temperature, it is possible to reduce the possibility that a person puts a part of the body (for example, a finger) into the vent hole X. The net 204 may be detachable from the housing 10 or may have a mechanism that allows the net 204 to be opened and closed.
(Fifteenth embodiment)
Next, a fifteenth embodiment is described. In the present embodiment, the difference in heat generation characteristics between the heat generating components 131 to 135 attached to the inner wall 123 and the heat generating components 136 to 139 attached to the bottom wall 121 is more specific than the contactless power supply device 1 of the first embodiment. It is a thing.

Specifically, as shown in FIG. 31, the measured temperatures of the heat generating components 131 to 139 increase in this order.

Here, the measurement temperature is measured as follows. First, when the non-contact power feeding device 1 is installed in a thermostat (for example, a thermostat set at 25 ° C.) and the rated maximum current is continuously supplied to each of the heat generating components 136 to 139 for 2 hours, (1) The temperature of the back side surface of the inner wall 123 where the heat generating component 131 is attached (2) The temperature of the back side surface of the inner wall 123 where the heat generating component 132 is attached (3) The temperature of the back side surface of the inner wall 123 where the heat generating component 133 is attached (4) The temperature of the back side surface of the inner wall 123 where the heat generating component 134 is attached (5) The coil 135 of the inner wall 123 The temperature of the back side of the attached portion (6) The temperature of the back side of the portion of the inner wall 123 where the heat generating component 136 is attached (7) The portion of the inner wall 123 where the heat generating component 137 is attached Side surface temperature (8) Temperature of the back side surface of the inner wall 123 where the heat generating component 138 is attached (9) Temperature of the back side surface of the inner wall 123 where the heat generating component 139 is attached In this way ( The temperatures obtained in 1) to (9) are the measured temperatures of the heat generating components 131 to 139, respectively. Accordingly, the measured temperature is a higher index for a heating element that tends to be higher in temperature. Note that the above-mentioned two hours are defined with the intention of a time sufficient to reach an equilibrium state in which heat generation and heat release are balanced in the non-contact power feeding device 1.

In the present embodiment, as shown in FIG. 31, the measured temperature of each of the heat generating components 136 to 139 is higher than the measured temperature of the heat generating components 136 to 139, regardless of which one of the measured temperatures of the heat generating components 131 to 135 is taken. It has become.

As described above, by arranging the high heat generating parts around the ventilation hole X in a concentrated manner, the temperature of the ventilation hole X can be effectively increased as compared with the case where it is not so, so that the chimney effect becomes stronger. As a result, the heat dissipation efficiency of the non-contact power feeding device 1 is increased.

In order to obtain a combined heat generating component configuration as in this embodiment, for example, switching elements may be used as the heat generating components 131 to 134, and filter circuits may be used as the heat generating components 136 to 139, for example. .

In addition, the above-described effects are exhibited to some extent as long as the component 131 having the highest measured temperature among the heat generating components 131 to 139 is attached to at least the inner wall 123.

Note that the present disclosure is not limited to the above-described embodiment, and can be changed as appropriate. Further, the above embodiments are not irrelevant to each other, and can be combined as appropriate unless the combination is clearly impossible. In each of the above-described embodiments, it is needless to say that elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Yes. Further, in each of the above embodiments, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is clearly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to the specific number except for the case. Further, in each of the above embodiments, when referring to the shape, positional relationship, etc. of the component, etc., the shape, unless otherwise specified and in principle limited to a specific shape, positional relationship, etc. It is not limited to the positional relationship or the like. The present disclosure also allows the following modifications to the above embodiments. In addition, the following modifications can select application and non-application to the said embodiment each independently. That is, of the following modifications, any combination excluding a clearly contradictory combination can be applied to the embodiment. A modification of the above embodiment will be described below.

<Modification 1> In each of the embodiments described above, the heat generating component is a component that generates heat when energized (that is, an electronic component). However, the heat generating component is not limited to one that generates heat when energized, but may generate heat due to any factor. There may be.

<Modification 2> In each of the above embodiments, the space in the interior of the housing 10 may be filled with a potting material.

<Modification 3> In the fifth embodiment, the housing 10 has two chimneys and ventilation holes. However, as another example, the housing 10 further has three or more chimneys and ventilation holes. It may be. In that case, for all of the three or more chimneys, a part of the heat generating component is attached to the inner surface of the casing 10 of the chimney, and the heat of the part of the heat generating component is You may discharge | release to the corresponding ventilation hole through the said chimney part.

<Modification 4> The support pillars 61 to 68 may be formed as separate members separated from the housing 10 as in the above embodiment, or may be formed integrally with the housing 10.

Although the present disclosure has been described based on the embodiments, it is understood that the present disclosure is not limited to the embodiments and structures. The present disclosure includes various modifications and modifications within the equivalent range. In addition, various combinations and forms, as well as other combinations and forms including only one element, more or less, are within the scope and spirit of the present disclosure.

Claims (14)

1. A housing (10) having a plate-shaped outer shape;
   A plurality of heat generating parts (131 to 163) housed in the housing and generating heat,
   The casing includes first chimneys (111, 123, which form first ventilation holes (X, Xc) penetrating from one side to the other side of two surfaces facing the thickness direction of the casing. 111c, 123c) and a bottom wall (121) that forms a bottom surface that is the one of the two surfaces of the housing,
   A part of the plurality of heat generating components is attached to a surface on the inner side of the casing of the first chimney, and heat of the certain heat generating component is the first chimney. Is released to the first vent through the chimney of
   Of the plurality of heat generating parts, another part different from the certain part is attached to a surface of the bottom wall on the inner side of the housing, and the other part of the heat generating parts is attached. The heat is released to the outside of the housing through the bottom wall.
2. The heat dissipating device according to claim 1, further comprising a member (61 to 64, 124a, 124b) that forms an air passage communicating with the first air hole outside the bottom surface of the housing. .
3. The heat dissipating device according to claim 2, wherein the member forming the air passage communicating with the first vent hole is a plurality of heat dissipating fins (124a, 124b).
4. The heat radiation device according to any one of claims 1 to 3, wherein the bottom wall and the first chimney are made of a nonmagnetic material.
5. The certain part of the heat generating component is a coil (135) that generates a magnetic flux when a current flows;
   The heat radiating device is a non-contact power feeding device that feeds power in a non-contact manner by a magnetic flux generated by the coil,
   A certain part (123a) of the first chimney is a non-magnetic metal, and another part (123b) different from the certain part of the first chimney is a resin. The heat radiating device according to any one of claims 1 to 3.
6. The casing has a second chimney portion (111d, 121d, 123d) that forms a second vent hole (Xd) penetrating from one side to the other side of two surfaces facing the thickness direction of the casing. Further comprising
   Another part of the second chimney part, which is different from the one part and the other part, is attached to the inner surface of the casing. The heat radiating device according to any one of claims 1 to 5, wherein heat of another part of the heat generating component is released to the second vent hole through the second chimney.
7. The outer surface and the bottom surface are smoothly connected in any cross section including the outer surface that is the surface opposite to the inner side of the housing and the bottom surface of the bottom wall of the first chimney. The heat dissipating device according to claim 1, wherein the heat dissipating device is a heat dissipating device.
8. The bottom surface of the bottom wall approaches an upper surface that is the surface on the other side of the two surfaces of the housing as it approaches the first chimney. The heat dissipation device described in one.
9. The heat dissipation according to any one of claims 1 to 8, wherein the first vent hole is provided with a heat dissipating fin (127) connected to the first chimney for heat transfer. apparatus.
10. A heat transfer member (121, 122) fixed to the first chimney inside the housing;
    The certain heat-generating component is attached to the heat transfer member, and can transfer heat indirectly to the inner surface of the casing of the first chimney through the heat transfer member. The heat radiating device according to claim 1, wherein the heat radiating device is attached to the heat radiating device.
11. The heat dissipation according to any one of claims 1 to 10, wherein the first vent hole is provided with a blower fan (128) that promotes an increase in air inside the first vent hole. apparatus.
12. The plasma actuator (211 to 214), which is disposed on the bottom surface of the bottom wall and generates an air flow that guides air to the first vent hole, is provided. The heat radiating device described in 1.
13. The heat dissipation according to any one of claims 1 to 12, further comprising a cover member (203, 204) that covers the first vent so that air flows out from the first vent. apparatus.
14. The plurality of heat generating components are elements that generate heat when energized,
    When the heat radiating device is installed in a thermostat and the rated maximum current is continuously supplied to each of the plurality of heat generating parts for 2 hours, the other part of the heat generating parts of the bottom wall is attached. The temperature on the back side of the surface of the first chimney where the certain heat generating component is attached is higher than the temperature on the back side of the back surface. The heat dissipation device according to any one of 13.

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