JP2021101161A - Enclosure and living body detection device - Google Patents

Abstract

To provide an enclosure that reduces the thickness of the enclosure on the bottom side and which can efficiently dissipate heat even in an environment where it is easily exposed to radiation heat from the bottom side.SOLUTION: An enclosure (20a) for a substrate (30), in which a radiating element (40a) of a living body detection radar is disposed, includes a thermal insulation plate (201), a radiating fin (202a) disposed at least on a side (C) of the substrate (30), a heat transfer part (203a), and a radome part (204a).SELECTED DRAWING: Figure 3

Description

The present invention relates to a housing and a biological detection device.

Radar for detecting a living body is known as a conventional technique. For example, in Patent Document 1, a mounting plate, a flat antenna, a transmission / reception unit, a power supply unit, a lower housing, a radome, and heat dissipation provided integrally on the bottom surface of the lower housing to dissipate heat. An antenna device comprising fins is disclosed.

Japanese Unexamined Patent Publication No. 2003-158465

However, in the structure in which the heat radiation fins are provided on the bottom surface of the housing as described above, there is a problem that the thickness of the housing on the bottom surface side becomes thick, and in an environment where radiant heat from the bottom surface side is easily received, the heat radiation fins are provided. There is a problem that heat can not be efficiently dissipated through the above.

One aspect of the present invention is to provide a housing and a biological detection device capable of reducing the thickness of the housing on the bottom surface side and efficiently dissipating heat even in an environment susceptible to radiant heat from the bottom surface side. And.

In order to solve the above-mentioned problems, the housing according to one aspect of the present invention is a housing for a substrate on which a radiation element of a biological detection radar is arranged, and the radiation element is arranged on the substrate. Heat conduction that conducts heat generated by a heat insulating plate arranged on the surface side opposite to the surface, heat radiating fins arranged at least on the side surface side of the substrate, and heat generating members arranged on the substrate to the radiating fins. A portion and a radome portion arranged so as to cover at least the surface of the substrate on the radiation element side are provided.

According to one aspect of the present invention, it is possible to reduce the thickness of the housing on the bottom surface side and efficiently dissipate heat even in an environment where radiant heat from the bottom surface side is easily received.

It is a schematic diagram of the vehicle provided with the biological detection device which concerns on Embodiment 1 of this invention. It is a perspective view of the biological detection apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing of the biological detection apparatus which concerns on Embodiment 1 of this invention. It is sectional drawing of the biological detection apparatus which concerns on modification 1 of Embodiment 1 of this invention. FIG. 5 is a cross-sectional view of the biological detection device according to the first modification of the first embodiment of the present invention when the XX cross section in FIG. 4 is viewed from the heat radiation fin side. It is sectional drawing of the biological detection apparatus which concerns on modification 2 of Embodiment 1 of this invention. It is sectional drawing of the biological detection apparatus which concerns on modification 3 of Embodiment 1 of this invention. It is sectional drawing of the biological detection apparatus which concerns on Embodiment 2 of this invention. It is sectional drawing of the biological detection apparatus which concerns on modification 1 of Embodiment 2 of this invention. It is sectional drawing of the biological detection apparatus which concerns on modification 2 of Embodiment 2 of this invention. It is sectional drawing of the biological detection apparatus which concerns on modification 3 of Embodiment 2 of this invention. It is sectional drawing of the biological detection apparatus which concerns on Embodiment 3 of this invention. It is sectional drawing of the biological detection apparatus which concerns on the modification of Embodiment 3 of this invention.

[Embodiment 1]
The biological detection device 10a according to the first embodiment will be described with reference to FIGS. 1 to 4. The biological detection device 10a is, for example, a vehicle biological detection device that detects a living body in the vehicle 1. However, the application destination of the biometric detection device 10a is not limited to the vehicle, and for example, in an industrial facility such as a production facility or a power generation facility, biometric detection in an environment susceptible to heat from a certain direction is performed. Therefore, it can be preferably applied.

[Overview of vehicle]
First, an outline of the biological detection device 10a will be described with reference to FIG. FIG. 1 is a schematic view of a vehicle 1 provided with a biological detection device 10a.

As shown in FIG. 1, the vehicle 1 is composed of a four-wheeled vehicle. The vehicle 1 includes a biological detection device 10a, one or more front seats 11, and one or more rear seats 12. The biological detection device 10a is attached to the ceiling in the vehicle 1 as an example, and detects the presence of the living body 13 sitting in the front seat 11 and the living body 14 sitting in the rear seat 12.

[Structure of biometric detection device 10a]
Next, the configuration of the biological detection device 10a according to the present embodiment will be described with reference to FIGS. 2 and 3.

FIG. 2 is a perspective view of the biological detection device 10a. As shown in FIG. 2, the biological detection device 10a includes a housing 20a. The housing 20a is a housing for the substrate 30 shown in FIG. 3, and is attached, for example, to the inside of a vehicle by screws 50.

As shown in FIG. 2, the housing 20a includes a heat insulating plate 201, heat radiation fins 202a, and a radome portion 204a.

When the biological detection device 10a is a biological detection device for a vehicle, the heat insulating plate 201 is arranged on the ceiling in the vehicle as an example. However, the location of the heat insulating plate 201 is not limited to the ceiling inside the vehicle, and may be arranged other than the ceiling, for example, the rear glass or the windshield. Further, when the biological detection device 10a is a biological detection device in an environment other than a vehicle, the location of the heat insulating plate 201 is not particularly limited as long as it can detect the living body, and for example, the ceiling, wall, and floor. , Windows, doors, outer surfaces of devices, etc.

As shown in FIG. 2, the heat radiating fin 202a includes a plurality of fin portions 2021 and a root portion 2022a connecting the plurality of fin portions 2021 to each other. The heat radiating fin 202a dissipates heat in the housing 20a.

As shown in FIG. 2, the radome portion 204a covers the heat insulating plate 201. Radiation fins 202a are arranged on the side surface of the radome portion 204a.

FIG. 3 is a cross-sectional view of the biological detection device 10a. As shown in FIG. 3, the biological detection device 10a includes a housing 20a and a substrate 30. The housing 20a is a housing for the substrate 30, and is attached, for example, to the inside of the vehicle by screws 50. The substrate 30 is housed in the housing 20a. A radiation element 40a of the biological detection radar is arranged on the substrate 30. The radiating element 40a is an element composed of a semiconductor element for driving a radar and an antenna element for transmitting and receiving electromagnetic waves. The semiconductor element generates heat by the operation of driving the radar. Therefore, in the present embodiment, the radiating element 40a is a heat generating member. In the present embodiment, the radiating element 40a has a configuration in which the semiconductor element and the antenna element are integrated, but in the radiating element 40a, the semiconductor element and the antenna element, which are individually manufactured, are arranged in the vicinity thereof. May be good. The heat generating member is not limited to the radiating element 40a, and other members arranged on the substrate 30 are also called heat generating members as long as they are members that generate heat. The band of the electromagnetic wave emitted by the radiating element 40a is not particularly limited as long as it can detect a living body, but is, for example, a millimeter wave band.

As shown in FIG. 3, the housing 20a includes a heat insulating plate 201, heat radiation fins 202a, a radome portion 204a, and a heat conductive portion 203a.

The heat insulating plate 201 is a member that blocks heat from the side opposite to the radiation direction of the radiating element 40a. Since the housing 20a is provided with the heat insulating plate 201, radiant heat from the attached base portion (for example, the ceiling of the vehicle) can be reduced. As shown in FIG. 3, the heat insulating plate 201 is arranged on the surface B side of the substrate 30 opposite to the surface A on which the radiating element 40a is arranged. As a result, heat from the side opposite to the radiation direction of the radiating element 40a can be efficiently insulated. Therefore, it is possible to prevent heat from the side opposite to the radiation direction of the radiating element 40a from being conducted to each member of the biological detection device 10a.

The heat radiating fin 202a is a member that dissipates heat generated by the radiating element 40a, which is conducted through the substrate 30 and the heat conductive portion 203a. The heat radiating fins 202a are arranged on the side surface C side of the substrate 30. The heat radiating fins 202a may be arranged at least on the side surface C side of the substrate 30, and may extend to the side surface side other than the side surface C.

The heat conductive portion 203a is a member that conducts the heat generated by the radiating element 40a arranged on the substrate 30 to the heat radiating fins 202a, which is conducted through the substrate 30. As shown in FIG. 3, the heat conductive portion 203a is arranged between the substrate 30 and the heat insulating plate 201. The heat conductive portion 203a is preferably in the form of a gel from the viewpoint of reducing vibration.

The radome portion 204a is a member for protecting the substrate 30. The radome portion 204a is made of a material (for example, resin) that transmits electromagnetic waves radiated by the radiating element 40a. As shown in FIG. 3, the radome portion 204a is arranged so as to cover the surface A on the radiation element 40a side of the substrate 30. The radome portion 204a may cover at least the surface A of the substrate 30 on the radiation element 40a side, and may cover the side surface of the substrate 30 as in the present embodiment.

As shown in FIG. 3, a through hole 2041a is formed in the radome portion 204a. The heat conductive portion 203a penetrates through the through hole 2041a. As a result, the heat conductive portion 203a can come into direct contact with the heat radiating fins 202a, so that the heat generated by the radiating element 40a can be efficiently conducted to the heat radiating fins 202a.

As described above, in the biological detection device 10a, the heat radiation fins 202a are arranged on at least the side surface C side of the substrate 30. As a result, even if the environment on the bottom surface side (the surface B side opposite to the surface A on which the radiating element 40a of the substrate 30 is arranged) is not suitable for heat dissipation, the radiation fins on the bottom surface side of the substrate 30 Compared with the structure in which 202a is arranged, heat can be dissipated more efficiently. Further, even with such a simple structure not provided with a fan or the like, heat can be efficiently dissipated. By releasing the heat generated by the radiating element 40a from the biological detection device 10a, it is possible to prevent the temperature of the biological detection device 10a from rising, so that the temperature of the biological detection device 10a can be maintained below a predetermined temperature. it can.

Further, in the biological detection device 10a, since the heat radiation fins 202a are arranged on at least the side surface C side of the substrate 30, the heat radiation fins 202a are arranged on the surface B side opposite to the surface A on which the radiation element 40a is arranged. The thickness can be made thinner than that of the structure. Specifically, the distance between the surface M on the heat insulating plate 201 opposite to the surface L on the substrate 30 side and the surface E on the radome portion 204a opposite to the surface D on the substrate 30 side is reduced. Can be done. This makes it possible to install the biometric detection device 10a, for example, between the roof and ceiling of the vehicle.

[Modification 1 of Embodiment 1]
The configuration of the biological detection device 10b according to the first modification of the first embodiment will be described with reference to FIGS. 4 and 5.

FIG. 4 is a cross-sectional view of the biological detection device 10b. As shown in FIG. 4, the biological detection device 10b includes a housing 20b and a substrate 30. The housing 20b includes a heat insulating plate 201, heat radiation fins 202a, a heat conductive portion 203b, and a radome portion 204d. The housing 20b is the same as the housing 20a of the first embodiment except that the heat conductive portion 203b is provided instead of the heat conductive portion 203a.

As shown in FIG. 4, the heat conductive portion 203b includes a heat radiating pipe 2031a and grease 2032. The grease 2032 is applied between the substrate 30 and the heat radiating pipe 2031a. The heat radiating pipe 2031a contains a hydraulic fluid, and the heat of vaporization absorbs the heat to transfer the heat. The grease 2032 conducts the heat generated by the radiating element 40a arranged on the substrate 30, which is conducted through the substrate 30, to the heat radiating pipe 2031a. The heat radiating pipe 2031a is embedded in the root portion 2022a of the heat radiating fin 202a, and conducts the heat generated by the radiating element 40a conducted through the grease 2032 to the heat radiating fin 202a. In the present embodiment, the heat radiating pipe 2031a is embedded in the root portion 2022a of the heat radiating fin 202a from the viewpoint of efficiently dissipating heat, but the heat radiating pipe 2031a may be in contact with at least a part of the heat radiating fin 202a. ..

FIG. 5 is a cross-sectional view of the biological detection device 10b when the XX cross section in FIG. 4 is viewed from the heat radiation fin 202a side. As shown in FIG. 5, the radome portion 204d includes a through hole 2041c. The heat radiating pipe 2031a penetrates the through hole 2041c. As described above, even if the heat radiating pipe 2031a is provided, the heat generated by the radiating element 40a can be efficiently radiated. A plurality of heat radiating pipes 2031a may be provided from the viewpoint of increasing heat radiating efficiency.

[Modification 2 of Embodiment 1]
The configuration of the biological detection device 10c according to the second modification of the first embodiment will be described with reference to FIG.

FIG. 6 is a cross-sectional view of the biological detection device 10c. As shown in FIG. 6, the biological detection device 10c includes a housing 20c and a substrate 30. The housing 20c includes a heat insulating plate 201, heat radiating fins 202b, a heat conductive portion 203a, and a radome portion 204a. The heat radiation fin 202b includes a plurality of fin portions 2021 and a root portion 2022b. As shown in FIG. 6, the root portion 2022b penetrates the through hole 2041a. Even with such a configuration, since the heat conductive portion 203a can directly contact the heat radiating fins 202b, the heat generated by the radiating element 40a can be efficiently conducted to the heat radiating fins 202b.

[Modification 3 of Embodiment 1]
The configuration of the biological detection device 10d according to the third modification of the first embodiment will be described with reference to FIG. 7.

FIG. 7 is a cross-sectional view of the biological detection device 10d. As shown in FIG. 7, the biological detection device 10d includes a housing 20d and a substrate 30. The housing 20d includes a heat insulating plate 201, heat radiating fins 202c, a heat conductive portion 203c, and a radome portion 204b. The housing 20d is the same as that of the first embodiment except that the heat radiating fin 202c is provided instead of the heat radiating fin 202a, the heat conductive portion 203c is provided instead of the heat conductive portion 203a, and the radome portion 204b is provided instead of the radome portion 204a. It is the same as the housing 20a.

As shown in FIG. 7, the heat radiation fin 202c includes a plurality of fin portions 2021 and a root portion 2022c. The root portion 2022c has a rod body 2023. The radome portion 204b is formed with a through hole 2041b having a shape corresponding to the shape of the rod body 2023. The heat conductive portion 203c has a recess 2033 having a shape corresponding to the shape of the rod body 2023. The rod body 2023 penetrates the through hole 2041b and is in direct contact with the heat conductive portion 203c in a state of being inserted into the recess 2033 of the heat conductive portion 203c. Even with such a configuration, since the heat conductive portion 203c can directly contact the heat radiating fin 202c, the heat generated by the radiating element 40a can be efficiently conducted to the heat radiating fin 202c.

[Embodiment 2]
Other embodiments of the present invention will be described below. For convenience of explanation, the same reference numerals will be added to the members having the same functions as the members described in the above embodiment, and the description will not be repeated.

The configuration of the biological detection device 10e according to the present embodiment will be described with reference to FIG.

FIG. 8 is a cross-sectional view of the biological detection device 10e. As shown in FIG. 8, the biological detection device 10e includes a housing 20e and a substrate 30. A radiating element 40a is arranged on the substrate 30.

As shown in FIG. 8, the housing 20e includes a heat insulating plate 201, heat radiating fins 202d, a heat conductive portion 203d, and a radome portion 204a. As shown in FIG. 8, the heat conductive portion 203d is arranged between the substrate 30 and the heat insulating plate 201. The heat radiation fin 202d extends to a region of the radome portion 204a on the surface E opposite to the surface D on the substrate 30 side so as not to interfere with the radiation range of the radiation element 40a. Specifically, the radiating fin 202d includes a plurality of fin portions 2021 and a root portion 2022d, and the radiating element 40a on the surface E of the radome portion 204a opposite to the surface D on the substrate 30 side. It extends to a region that does not interfere with the radiation range of. Since the heat radiating fin 202d extends not only to the side surface C side of the substrate 30 but also to the surface E of the radome portion 204a on the side opposite to the surface D on the substrate 30 side, the surface area of the heat radiating fin 202d becomes large, so that heat is dissipated. Efficiency can be increased. Further, since the heat radiation fin 202d extends to a region that does not interfere with the radiation range of the radiation element 40a, heat can be dissipated without interfering with the radiation of the radiation element 40a.

[Modification 1 of Embodiment 2]
The configuration of the biological detection device 10i according to the first modification of the second embodiment will be described with reference to FIG.

FIG. 9 is a cross-sectional view of the biological detection device 10i. As shown in FIG. 9, the biological detection device 10f includes a housing 20h and a substrate 30. The housing 20h includes a heat insulating plate 201, heat radiating fins 202d, a heat conductive portion 203e, and a radome portion 204d. The housing 20h is the same as the housing 20e of the second embodiment except that the heat conductive portion 203e is provided instead of the heat conductive portion 203d.

As shown in FIG. 9, the heat conductive portion 203e includes a heat radiating pipe 2031b and grease 2032. The grease 2032 is applied between the substrate 30 and the heat radiating pipe 2031b. The heat radiating pipe 2031b is embedded in the root portion 2022d of the heat radiating fin 202d, and conducts the heat generated by the radiating element 40a conducted through the grease 2032 to the heat radiating fin 202d. By providing the heat radiating pipe 2031b, heat can be easily transferred as compared with the gel-like heat conductive portion, so that heat can be radiated more efficiently, especially when the heat radiating fin 202d and the radiating element 40a are separated from each other. it can.

[Modification 2 of Embodiment 2]
The configuration of the biological detection device 10f according to the second modification of the second embodiment will be described with reference to FIG.

FIG. 10 is a cross-sectional view of the biological detection device 10f. As shown in FIG. 10, the biological detection device 10f includes a housing 20e and a substrate 30. The housing 20e includes a heat insulating plate 201, heat radiating fins 202d, a heat conductive portion 203f, and a radome portion 204e. The radome portion 204e includes a through hole 2041d, and the heat conductive portion 203f penetrates the through hole 2041d. A radiating element 40a is arranged on the substrate 30. As shown in FIG. 10, the substrate 30 and the radiating element 40a are arranged so that the radiating central axis F of the radiating element 40a is not parallel to the normal line of the heat insulating plate 201. The radiation element 40a may be arranged, for example, so that the radiation center axis F is in the direction in which the living body is desired to be detected. For example, when the biological detection device 10f is a biological detection device for a vehicle and the seat on which the living body is desired to be detected is the rear seat, the biological detection device 10f is installed so that the radiation center axis F faces the rear seat. As a result, the biological detection device 10f can more reliably detect the living body in the rear seat.

As shown in FIG. 10, the radiating fin 202d is the radiation central axis F of the radiating element 40a when viewed from the normal of the heat insulating plate 201 on the surface E of the radome portion 204a on the side opposite to the surface D on the substrate 30 side. Extends to the opposite region. Specifically, the root portion 2022d is located in a region of the radome portion 204a on the surface E opposite to the surface D on the substrate 30 side, which is opposite to the radiation center axis F when viewed from the normal of the substrate 30. It is stretched.

Since the heat radiating fin 202d extends not only to the side surface side of the heat conductive portion 203f but also to the region opposite to the radiation center axis F of the radiation element 40a when viewed from the normal line of the substrate 30, the radiation element 40a The heat dissipation efficiency can be improved without interfering with radiation.

[Modification 3 of Embodiment 2]
The configuration of the biological detection device 10j according to the third modification of the second embodiment will be described with reference to FIG.

FIG. 11 is a cross-sectional view of the biological detection device 10j. As shown in FIG. 11, the biological detection device 10j includes a housing 20i and a substrate 30. The housing 20i includes a heat insulating plate 201, heat radiating fins 202d, a heat conductive portion 203 g, and a radome portion 204d. The housing 20i is the same as the housing 20e of the second modification of the second embodiment except that the heat conductive portion 203g is provided instead of the heat conductive portion 203f and the radome portion 204d is provided instead of the radome portion 204e.

As shown in FIG. 11, the heat conductive portion 203 g includes a heat radiating pipe 2031c and grease 2032. The grease 2032 is applied between the substrate 30 and the heat radiating pipe 2031c. The heat radiating pipe 2031c is embedded in the root portion 2022d of the heat radiating fin 202d, and conducts the heat generated by the radiating element 40a conducted through the grease 2032 to the heat radiating fin 202d. By providing the heat radiating pipe 2031c, heat can be easily transferred as compared with the gel-like heat conductive portion, so that heat can be radiated more efficiently, especially when the heat radiating fin 202d and the radiating element 40a are separated from each other. it can.

[Embodiment 3]
Other embodiments of the present invention will be described below. For convenience of explanation, the same reference numerals will be added to the members having the same functions as the members described in the above embodiment, and the description will not be repeated.

The configuration of the biological detection device 10g according to the present embodiment will be described with reference to FIG.

FIG. 12 is a cross-sectional view of the biological detection device 10 g. As shown in FIG. 12, the biological detection device 10g includes a housing 20f and a substrate 30. A radiating element 40b is arranged on the substrate 30. In the radiating element 40b, the semiconductor element 41 and the antenna element 42 are separately arranged on the substrate 30. The semiconductor element 41 is a heat generating member. As shown in FIG. 12, the semiconductor element 41 is arranged on the surface A on which the radiating element 40b is arranged on the substrate 30. The housing 20f includes a heat insulating plate 201, a first fin 202e, a second fin 202f, a heat conductive portion 203a, and a radome portion 204c.

As shown in FIG. 12, the heat conductive portion 203a is arranged on the surface H side of the semiconductor element 41 opposite to the surface G on the substrate 30 side. Specifically, the heat conductive portion 203a is in direct contact with the surface H of the semiconductor element 41 on the surface I of the heat conductive portion 203a on the substrate 30 side.

The first fin 202e includes a plurality of fin portions 2021 and a root portion 2022e. The second fin 202f includes a plurality of fin portions 2021 and a root portion 2022f. As shown in FIG. 12, the first fin 202e is arranged on the side surface J side of the heat conductive portion 203a. Specifically, the first fin 202e is in direct contact with the side surface J of the heat conductive portion 203a at the root portion 2022e. As shown in FIG. 12, the second fin 202f is arranged on the surface K side of the heat conductive portion 203a on the side opposite to the surface I on the semiconductor element 41 side. Specifically, the second fin 202f is in direct contact with the surface K of the heat conductive portion 203a at the root portion 2022f.

As described above, the housing 20f includes not only the first fin 202e arranged on the side surface C side of the substrate 30, but also the second fin 202f arranged on the surface K side of the heat conductive portion 203a. There is. As a result, the surface area of the second fin 202f can be secured in addition to the surface area of the first fin 202e, so that the heat dissipation efficiency can be improved. As described above, the housing 20f may be provided with a plurality of heat radiating fins, and the heat radiating fins 202e and 202f are preferably in direct contact with the semiconductor element 41 from the viewpoint of efficient heat dissipation.

[Modified Example of Embodiment 3]
Other embodiments of the present invention will be described below. For convenience of explanation, the same reference numerals will be added to the members having the same functions as the members described in the above embodiment, and the description will not be repeated.

The configuration of the biological detection device 10h according to the present embodiment will be described with reference to FIG.

FIG. 13 is a cross-sectional view of the biological detection device 10h. As shown in FIG. 13, the biological detection device 10h includes a housing 20 g and a substrate 30. The housing 20 g includes a heat insulating plate 201, heat radiation fins 202 g, a heat conductive portion 203a, and a radome portion 204c.

The heat radiation fin 202g includes a plurality of fin portions 2021 and a root portion 2022g. As shown in FIG. 13, the heat radiating fin 202g is arranged on the side surface J side of the heat conductive portion 203a and extends to the surface K of the heat conductive portion 203a on the side opposite to the surface I on the semiconductor element 41 side. ing. Specifically, the heat radiating fin 202g is in direct contact with the side surface J of the heat conductive portion 203a and in direct contact with the surface K of the heat conductive portion 203a at the root portion 2022g.

Since the heat radiating fin 202g extends not only to the side surface J side of the heat conductive portion 203a but also to the surface K on the side opposite to the surface I on the semiconductor element 41 side of the heat conductive portion 203a, the surface area of the heat radiating fin 202g is large. Therefore, the heat dissipation efficiency can be improved.

[Summary]
The housing (20a) according to the first aspect of the present invention is a housing (20a) for the substrate (30) on which the radiation element (40a) of the biological detection radar is arranged, and the substrate (30) has the said. A heat insulating plate (201) arranged on the surface (B) side opposite to the surface (A) on which the radiating element (40a) is arranged, and at least the side surface (C) side of the substrate (30). The heat radiating fin (202a), the heat conductive portion (203a) for conducting the heat generated by the heat generating member (40a) arranged on the substrate (30) to the radiating fin (202a), and at least the substrate (30). It is configured to include a radome portion (204a) arranged so as to cover the surface on the radiation element (40a) side.

According to the above configuration, even when the thickness is thin and the environment on the bottom surface side is not suitable for heat dissipation, heat can be efficiently dissipated.

In the housing (20a, 20b, 20c, 20d) according to the second aspect of the present invention, in the above aspect 1, the radome portions (204a, 204b) are formed with through holes (2041a, 2041b). The heat radiating fins (202a, 202b, 202c) include a plurality of fin portions (2021) and root portions (2022a, 2022b, 2022c) connecting the plurality of fin portions (2021) to each other. The heat conductive portion (203a, 203b, 203c) may penetrate the through hole (2041a), or the root portion (2022b, 2022c) may penetrate the through hole (2041a, 2041b). Good.

According to the above configuration, since the heat conductive portion can be in direct contact with the heat radiating fins, the heat generated by the heat generating member can be efficiently conducted to the heat radiating fins.

In the housing (20f) according to the third aspect of the present invention, in the above aspect 1 or 2, the heat conductive portion (203a) is different from the surface (G) of the heat generating member (41) on the substrate (30) side. The heat radiating fins (202e, 202f) arranged on the opposite surface (H) side are the first fins (202e) arranged on the side surface (J) side of the heat conductive portion (203a), and the heat. The conductive portion (203a) may be configured to include a second fin (202f) arranged on the surface (K) side opposite to the surface (I) on the heat generating member (41) side.

According to the above configuration, since the housing includes not only the first fin but also the second fin, the surface area of the second fin can be secured in addition to the surface area of the first fin. , The heat dissipation efficiency can be improved.

In the housing (20 g) according to the fourth aspect of the present invention, in the above aspect 1 or 2, the heat conductive portion (203a) is different from the surface (G) of the heat generating member (41) on the substrate (30) side. Arranged on the opposite surface (H) side, the heat radiating fin (202 g) is placed on the surface (K) of the heat conductive portion (203a) opposite to the surface (I) on the heat generating member (41) side. It may be a stretched structure.

According to the above configuration, the surface area of the heat radiating fin is increased because the heat radiating fin extends not only to the side surface side of the heat conductive portion but also to the surface of the heat conductive portion opposite to the surface on the heat generating member side. , The heat dissipation efficiency can be improved.

In the housing (20e) according to the fifth aspect of the present invention, in the above aspect 1 or 2, the heat conductive portion (203a) is arranged between the substrate (30) and the heat insulating plate (201). The heat radiation fin (202d) is a region (E) of the radome portion (204a) opposite to the surface (D) on the substrate (30) side that does not interfere with the radiation range of the radiation element (40a). It may be configured to be stretched to.

According to the above configuration, since the heat radiating fin extends not only to the side surface side of the substrate but also to the surface of the radome portion opposite to the surface surface of the substrate side, the surface area of the heat radiating fin is increased, so that the heat radiation efficiency is improved. Can be enhanced. Further, since the heat radiation fins are extended to a region that does not interfere with the radiation range of the radiation element, heat can be dissipated without interfering with the radiation of the radiation element.

In the housing (20e) according to the sixth aspect of the present invention, in any one of the above aspects 1 to 5, the radiation element (40a) has the radiation central axis (F) of the radiation element (40a) as the heat insulating element. Arranged so as to be non-parallel to the normal of the plate (201), the radiating fin (202d) is a surface (D) of the radome portion (204a) opposite to the surface (D) on the substrate (30) side. In E), the structure may extend to a region opposite to the radiation center axis (F) when viewed from the normal line of the heat insulating plate (201).

According to the above configuration, the surface area of the radiating fins is increased because the radiating fins extend not only to the side surface side of the substrate but also to the region opposite to the radiation center axis of the radiating element when viewed from the normal line of the substrate. Since it becomes large, the heat dissipation efficiency can be improved. Further, since the heat radiation fins are extended to a region that does not interfere with the radiation range of the radiation element, heat can be dissipated without interfering with the radiation of the radiation element.

The housing (20a to 20g) according to the seventh aspect of the present invention may have a configuration in which the heat insulating plate (201) is arranged on the ceiling in the vehicle (1) in any one of the above aspects 1 to 6. Good.

According to the above configuration, it is possible to prevent heat from the ceiling of the vehicle from being conducted to each member in the housing.

In any of the above aspects 1 to 7, the housing (20f, 20g) according to the eighth aspect of the present invention has the heat generating member (41) on the surface (A) on which the radiating element (40b) is arranged. It may be arranged.

The biological detection device (10a to 10h) according to the ninth aspect of the present invention is housed in the housing (20a to 20g) according to any one of the above aspects 1 to 8 and the housing (20a to 20g). Alternatively, the configuration may include a substrate (30) on which the radiation elements (40a, 40b) of the biological detection radar are arranged.

[Additional notes]
The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.

1 Vehicle 10a, 10b, 10d, 10e, 10f, 10g, 10h, 10i, 10j Biometric detection device 11 Front seat 12 Rear seat 13,14 Biological 20a, 20b, 20c, 20d, 20e, 20f, 20g, 20h, 20i housing Body 30 Substrate 40a, 40b Radiant element 41 Semiconductor element 42 Antenna element 50 Screw 201 Insulation plate 202a, 202b, 202c, 202d, 202g Heat dissipation fin 202e First fin 202f Second fin 203a, 203b, 203c, 203d, 203e, 204f, 204g Heat conduction part 204a, 204b, 204c, 204d Radome part 2021 Fin part 2022a, 2022b, 2022c, 2022d, 2022e, 2022f, 2022g, 2022h Root part 2023 Rod body 2031a, 2031b, 2031c Radiation pipe 2032 Grease 2041a Through hole

Claims (9)

It is a housing for the substrate on which the radiation element of the biological detection radar is arranged.
In the substrate, a heat insulating plate arranged on the surface side opposite to the surface on which the radiating element is arranged, and
With the heat radiation fins arranged at least on the side surface side of the substrate,
A heat conductive portion that conducts heat generated by a heat generating member arranged on the substrate to the heat radiating fins.
A housing characterized by including at least a radome portion arranged so as to cover a surface of the substrate on the radiation element side. A through hole is formed in the radome portion.
The heat radiating fin includes a plurality of fin portions and a root portion connecting the plurality of fin portions to each other.
The housing according to claim 1, wherein the heat conductive portion penetrates the through hole, or the root portion penetrates the through hole. The heat conductive portion is arranged on the surface side of the heat generating member opposite to the surface of the heat generating member on the substrate side.
The heat radiating fin includes a first fin arranged on the side surface side of the heat conductive portion and a second fin arranged on the surface side of the heat conductive portion opposite to the surface on the heat generating member side. The housing according to claim 1 or 2, wherein the housing is provided. The heat conductive portion is arranged on the surface side of the heat generating member opposite to the surface of the heat generating member on the substrate side.
The housing according to claim 1 or 2, wherein the heat radiating fin extends to a surface of the heat conductive portion opposite to the surface of the heat generating member. The heat conductive portion is arranged between the substrate and the heat insulating plate.
The first or second aspect of the present invention, wherein the heat radiation fin extends to a region of the radome portion on a surface opposite to the surface of the radome portion on the substrate side, which does not interfere with the radiation range of the radiation element. Housing. The radiating element is arranged so that the radiating central axis of the radiating element is non-parallel to the normal of the heat insulating plate.
The heat radiating fin is characterized in that it extends to a region of the radome portion on a surface opposite to the surface on the substrate side, which is opposite to the radiation center axis when viewed from the normal line of the heat insulating plate. The housing according to any one of claims 1 to 5. The housing according to any one of claims 1 to 6, wherein the heat insulating plate is arranged on a ceiling in a vehicle. The housing according to any one of claims 1 to 7, wherein the heat generating member is arranged on a surface on which the radiating element is arranged. The housing according to any one of claims 1 to 8.
A biological detection device including a substrate on which a radiation element of a biological detection radar is arranged, which is housed in the housing.

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