JP2015050580A - Wireless communication device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wireless communication device which has a simple structure, is inexpensive, and has excellent transmission/reception performance.SOLUTION: A wireless communication device comprises: a frame 1000; a heat sink 10 which is provided on the side nearer to a surface of the frame 1000 than the center of the frame 1000 inside the frame 1000 for predetermined use, and is notched so that part of the heat sink 10 forms inverted F antennas 20A, 20B for transmitting or receiving a wireless signal; and a wireless signal transmission/reception unit 201 for transmitting or receiving the wireless signal by using the inverted F antennas 20A, 20B formed at the heat sink 10.

Description

  The present invention relates to a wireless communication apparatus.

  Wireless communication devices that comply with the Wi-Fi (Wireless Fidelity) standard and the Bluetooth (Bluetooth (registered trademark)) standard are required to be thin and have good design. In response to this type of request, a wireless communication device has been developed in which an antenna is provided inside a housing without being provided outside the housing.

  As an example of the antenna provided inside the housing, there is an antenna integrated module described in Patent Document 1. In this antenna-integrated module, a sheet metal cover that functions as an antenna is attached to the circuit board so as to cover almost the front surface of the circuit board.

Japanese Patent Laid-Open No. 2005-5866

  In general, an antenna closer to the surface of the housing than the center inside the housing is less susceptible to noise and the like generated from electronic components inside the housing, and thus has excellent radio signal transmission / reception characteristics.

  According to Patent Document 1 described above, a cover made of a sheet metal functioning as an antenna is attached to the circuit board. However, as described above, since the wireless communication device is required to be thin, the position close to the surface of the housing. In addition, there is a case where a space for attaching the cover cannot be secured.

  In addition, a shield plate for noise suppression and a heat sink for heat radiation may be attached at a position close to the surface of the housing. In this case, it is difficult to secure a space for attaching the cover. In addition, it is expensive to manufacture the sheet metal cover separately from the electronic components of the wireless communication device.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a wireless communication apparatus that has a simple structure, is inexpensive, and has excellent transmission / reception performance.

  In order to achieve the above object, a wireless communication device according to one embodiment of the present invention is provided on a side closer to a surface of a casing than the center of the casing. A conductive member provided for a specified use, wherein the conductive member is cut away so that an antenna for transmitting or receiving a radio signal is formed by a part of the conductive member. And a wireless communication unit that transmits or receives the wireless signal using the antenna formed on the conductive member.

  According to this configuration, the conductive member is formed so that the antenna is formed by a part of the conductive member already provided on the surface side of the housing from the central portion inside the housing for a predetermined use. There is a notch.

  Therefore, it is not necessary to secure a new member for forming the antenna and a space for arranging the antenna, and the antenna can be formed at a position close to the housing surface. Further, since the antenna is formed only by providing a cutout so that the antenna is formed by a part of the conductive member, the structure of the antenna becomes a simple structure.

  As a result, it is possible to provide a wireless communication device that has a simple structure and is inexpensive and excellent in transmission and reception performance.

  Further, the conductive member has a parallel plane parallel to the ground, and the parallel plane antenna formed by a part of the parallel plane is cut out as the antenna. Have.

  According to this configuration, an antenna is formed by a part of the parallel surface by cutting out a parallel surface of the conductive member that is parallel to the ground.

  Therefore, since the antenna is formed horizontally with respect to the ground, a vertically polarized signal can be transmitted and received through the antenna.

  The parallel plane antenna is cut and raised from the parallel plane.

  According to this configuration, the parallel plane antenna is cut and raised from the parallel plane.

  Therefore, when the parallel surface faces the parallel surface of the housing (that is, one or both of the upper surface and the lower surface of the housing), the parallel surface antenna is directed toward the parallel surface of the housing. Thus, wireless signals can be transmitted and received at a position closer to the parallel surface of the housing. As a result, better transmission / reception performance can be ensured.

  The conductive member has a vertical plane perpendicular to the ground, and the vertical plane antenna formed by a part of the vertical plane is cut out as the antenna. Have.

  According to this configuration, the antenna is formed by a part of the vertical surface by cutting out the vertical surface of the conductive member that is perpendicular to the ground.

  Therefore, since the antenna is formed perpendicular to the ground, a horizontally polarized signal can be transmitted and received through the antenna.

  The vertical plane antenna is cut and raised from the vertical plane.

  According to this configuration, the vertical plane antenna is cut and raised from the vertical plane.

  Therefore, when the vertical plane faces the vertical plane of the casing (that is, the side face of the casing), the vertical plane antenna is directed toward the vertical plane of the casing. Wireless signals can be transmitted and received at a position close to. As a result, better transmission / reception performance can be ensured.

  The conductive member has a parallel surface parallel to the ground and an inclined surface extending obliquely downward from the end of the parallel surface toward the housing. The inclined surface is cut away so that an antenna is formed.

  According to this configuration, since the antenna is formed on the inclined surface extending from the end of the parallel surface toward the housing surface, it is possible to transmit and receive the vertical polarization signal and the horizontal polarization signal with one antenna. it can. Thereby, the cost of forming the antenna can be further reduced.

  Further, the conductive member has a parallel surface parallel to the ground and a vertical surface perpendicular to the ground, and the antenna is formed by cutting the parallel surface as the antenna. It has both an antenna and a vertical plane antenna formed by cutting out the vertical plane.

  According to this configuration, since both the horizontal plane antenna and the vertical plane antenna are provided, the vertical polarization signal and the horizontal polarization signal can be transmitted or received simultaneously.

  The parallel plane antenna and the vertical plane antenna constitute a polarization diversity antenna.

  According to this configuration, since the polarization diversity antenna is configured by the parallel plane antenna and the vertical plane antenna, the radio wave condition of the radio signal captured by the parallel plane antenna and the radio signal captured by the vertical plane antenna It is possible to preferentially use an excellent radio signal or to remove noise by synthesizing both received signals. As a result, the quality of wireless communication can be improved.

  The antenna is an inverted F antenna.

  In general, an antenna needs to be approximately half the wavelength in order to perform communication conforming to a wireless LAN (Local Area Network) standard or communication conforming to a Bluetooth standard. For example, if the wavelength is 12.5 cm, the antenna requires half that length, approximately 6 cm.

  However, in order to provide such a long antenna inside the housing, there is a space limitation. It is also expensive.

  According to this configuration, since the antenna is an inverted-F antenna, the length of the antenna can be ¼ or ８ of the wavelength, so that the antenna installation space is not easily restricted. Also, extra costs can be suppressed.

  Further, the conductive member has a parallel surface parallel to the ground and two vertical surfaces provided perpendicular to the ground and facing each other so as to cover the electronic component mounted on the circuit board, and The heat sink is attached to the circuit board so that the parallel surface is in contact with the electronic component.

  According to this configuration, the conductive member is a heat sink attached to the circuit board so as to cover the electronic component mounted on the circuit board and so that the parallel surface is in contact with the electronic component.

  This type of heat sink is often provided at a position close to the surface of the casing in order to release heat generated in the electronic component to the outside of the casing. For this reason, since the antenna can be provided in the housing close to the surface of the housing, the radio signal transmission / reception performance is improved.

  The conductive member has a parallel plane parallel to the ground and two vertical planes provided perpendicular to the ground and facing each other, and covers the electronic component mounted on the circuit board. This is an electromagnetic shielding case attached to the substrate.

  According to this configuration, the conductive member is an electromagnetic shielding case attached to the circuit board so as to cover the electronic component mounted on the circuit board.

  Generally, when an electronic component is mounted on a circuit board located close to the housing surface, the electromagnetic shielding case is provided close to the housing surface in order to electromagnetically isolate the electronic component from the outside of the housing. It is done. For this reason, since the antenna can be provided in the housing close to the surface of the housing, the radio signal transmission / reception performance is improved.

  Further, the liquid crystal module has a substantially rectangular parallelepiped shape and has an upper surface, a lower surface, and two side surfaces, and the conductive member covers an upper surface of the liquid crystal module and has a parallel surface parallel to the ground. An outer frame, a lower outer frame that covers the lower surface of the liquid crystal module and has the parallel surface, and two side outer frames that cover the side surfaces of the liquid crystal module and have a vertical surface perpendicular to the ground. is there.

  In general, the liquid crystal module is provided at a position close to the surface of the casing because the liquid crystal cell included in the liquid crystal module needs to be exposed to the outside of the casing.

  According to this configuration, the conductive member is the four outer frames of the substantially rectangular parallelepiped liquid crystal module, and the antenna can be formed on each outer frame. Therefore, the antenna can be provided at a position close to the housing surface. it can. As a result, the radio signal transmission / reception performance is improved.

  According to the present invention, it is possible to provide a wireless communication device that is simple in structure and inexpensive and excellent in transmission and reception performance.

1 is a system configuration diagram showing an example of a system configuration of a video on demand system using a television receiver according to Embodiment 1 of the present invention. It is the perspective view which showed typically the structure of the principal part of the television receiver which concerns on Embodiment 1 of this invention. It is the elements on larger scale which showed the state which expanded the part in which the inverted F antenna was formed among heat sinks. It is the elements on larger scale which showed the state which expanded the part in which the inverted F antenna was formed among heat sinks. It is the figure which represented typically the directivity of the orthogonal | vertical direction of the inverted F antenna formed in the parallel surface and the vertical surface. It is the figure which represented typically the directivity of the horizontal direction of the inverted F antenna formed in the vertical surface. It is the perspective view which showed typically the structure of the principal part of the television receiver in the modification of this invention. It is the elements on larger scale which showed the state which expanded the part in which the inverted F antenna was formed among the upper outer frames of a liquid crystal module. It is the elements on larger scale which showed the state which expanded the part in which the inverted F antenna was formed among the right part outer frames of a liquid crystal module. It is the perspective view which showed typically the structure of the principal part of the television receiver which concerns on Embodiment 2 of this invention. It is the perspective view which showed typically the structure of the principal part of the television receiver which concerns on Embodiment 3 of this invention. It is the elements on larger scale which showed the state which expanded the part in which the inverted F antenna was formed among heat sinks.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that each of the embodiments described below shows a comprehensive or specific example. The constituent elements, the arrangement positions of the constituent elements, and the connection forms shown in the following embodiments are merely examples, and are not intended to limit the present invention. In addition, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept are described as optional constituent elements.

  Furthermore, in the following description, a television receiver having a wireless communication function is illustrated as a wireless communication apparatus according to an embodiment of the present invention. However, the present invention is not limited to this example, and the wireless communication function is provided. The present invention can be applied to all devices provided.

(Embodiment 1)
<Configuration of wireless communication device>
FIG. 1 is a system configuration diagram showing an example of a system configuration of a video-on-demand system using the television receiver 1 according to Embodiment 1 of the present invention. FIG. 2 is a perspective view schematically showing the configuration of the main part of the television receiver 1 according to Embodiment 1 of the present invention.

  In FIG. 1, a television receiver 1 has a built-in wireless LAN slave unit (not shown) and conforms to a predetermined communication protocol (for example, Ethernet (registered trademark) standard) with the wireless LAN master unit 2. Protocol). The wireless LAN base unit 2 is connected to the router 3.

  The router 3 transmits information received through a communication network (for example, the Internet) N to the wireless LAN base unit 2. In response to this, the wireless LAN base unit 2 transmits the information transmitted from the router 3 to the television receiver 1 in the form of a wireless signal.

  An on-demand content server 4 is connected to the communication network N. The on-demand content server 4 is operated by a video on-demand service provider, and information representing program content such as movies is stored in advance by genre. Examples of the video-on-demand service include ActVila (registered trademark) provided by Actvila Co., Ltd.

  In response to a request from a device connected to the communication network N (the device of the on-demand service contractor), the on-demand content server 4 distributes information representing program content designated by the device.

  In the video on-demand system having such a configuration, the television receiver 1 accesses the on-demand content server 4 by an operation on the television receiver 1 side (for example, an operation of a remote controller). Then, when the television receiver 1 side requests distribution of program content that the user wants to watch, information for requesting distribution of the program content is transmitted to the wireless LAN base unit 2 in the form of a wireless signal.

  In response to this, the wireless LAN base unit 2 transmits the information transmitted from the television receiver 1 to the on-demand content server 4 through the router 3 and the communication network N.

  Then, the on-demand content server 4 transmits the program content requested by the user to the wireless LAN base unit 2 via the communication network N and the router 3. The wireless LAN base unit 2 transmits information representing the transmitted program content to the television receiver 1 in the form of a wireless signal. As a result, the television receiver 1 can watch the program content that the user wants to watch.

  The television receiver 1 includes a circuit board 300 on which an electronic component (not shown) is mounted inside a housing 1000 and a heat sink 10 (on the circuit board 300 so as to cover the electronic component) ( A conductive member), a wireless signal transmission / reception unit (wireless communication unit) 201, and a control unit 200. In FIG. 2, the surface of the housing 1000 is located above the parallel surface 100 of the heat sink 10.

  The circuit board 300 is provided closer to the surface of the casing 1000 than the center of the casing 1000 (not shown).

  The heat sink 10 is configured to have a hollow inside, is in contact with the electronic component, and is provided so as to connect the parallel surface 100 parallel to the ground, and the parallel surface 100 and the circuit board 300. And two vertical surfaces 101 that are perpendicular to each other and that face each other. The heat sink 10 releases heat generated from the electronic component to the outside of the heat sink 10 by the parallel surface 100 coming into contact with the electronic component.

  The wireless signal transmission / reception unit 201 transmits / receives a wireless signal to / from another wireless communication device through the inverted F antenna formed on the heat sink 10.

  The control unit 200 comprehensively controls the components of the television receiver 1 such as the wireless signal transmission / reception unit 201. The control unit 200 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like, and is realized by the CPU executing a predetermined control program.

  As shown in FIG. 2, in the heat sink 10, an inverted F antenna 20 </ b> A (parallel plane antenna) is formed by forming a notch 12 in the parallel plane 100 and one vertical plane 101. Further, by forming the notch 12 in one vertical plane 101, an inverted F antenna 20B (vertical plane antenna) is formed.

  In FIG. 2, the inverted F antenna 20 </ b> B is formed on only one vertical plane 101, but the present invention is not limited to this example, and the inverted F antenna may be formed on the two vertical planes 101. .

  FIG. 3A is a partial enlarged view showing a state in which the portion of the heat sink 10 where the inverted F antenna 20A is formed is enlarged. The inverted F antenna 20A has a notch 12 formed in the parallel surface 100 so that a T-shaped portion 101D parallel to the ground remains, and a feed portion 101C perpendicular to the ground remains on the vertical surface 101. It is formed by forming the notch 12.

  FIG. 3B is a partial enlarged view showing a state in which the portion of the heat sink 10 where the inverted F antenna 20B is formed is enlarged. The inverted F antenna 20B is formed by forming a notch 12 in the vertical surface 101 so that an inverted F-shaped portion perpendicular to the ground remains. At this time, the notch 12 is formed so that the connecting portion 101 </ b> F that connects the inverted F-shaped portion and the vertical surface 101 remains so that the inverted F-shaped portion does not fall off the heat sink 1. It should be noted that the substantially rectangular parallelepiped portion 101E falls off the vertical surface 101 by forming the notch 12.

  FIG. 4A is a diagram schematically showing the directivity in the vertical direction of the inverted F antenna 20 </ b> A formed on the parallel surface 100 and the vertical surface 101. FIG. 4B is a diagram schematically showing the directivity in the horizontal direction of the inverted F antenna 20 </ b> B formed on the vertical surface 101. 4A and 4B, the X axis represents the vertical direction, the Y axis represents the horizontal direction, and the Z axis represents the front side of the heat sink 10.

  These inverted F antennas 20A and 20B include a main body portion 101A, a short-circuit portion 101B, and a power feeding portion 101C. The short-circuit portion 101B is grounded, and high-frequency power is supplied to the power feeding portion 101C so that these inverted F antennas 20A and 20B can transmit and receive wireless signals. Thereby, the inverted F antennas 20A and 20B can transmit and receive a radio signal through the main body 101A.

  In the inverted F antenna 20A, the main body 101A is formed on a parallel surface 100 parallel to the ground. Therefore, the directivity of the inverted F antenna 20A is perpendicular to the ground. Illustrating such vertical directivity is the radiation R1 in FIG. 4A.

  In one inverted F antenna 20B, the main body 101A is formed on a vertical surface 101 perpendicular to the ground. Therefore, the directivity of the inverted F antenna 20B is horizontal with respect to the ground. Illustrating such horizontal directivity is the radiation R2 in FIG. 4B.

  In the television receiver 1, as shown in FIG. 2, a radio signal transmitting / receiving unit (wireless communication unit) 201 is connected to each of the power feeding units 101 </ b> C of the inverted F antennas 20 </ b> A and 20 </ b> B. In this example, the inverted F antenna 20A and the inverted F antenna 20B constitute a so-called polarization diversity antenna.

  The wireless signal transmission / reception unit 201 preferentially uses a wireless signal received by the inverted-F antenna 20A and a wireless signal received by the antenna 20B with superior radio wave conditions, or combines both received signals. And remove the noise.

<Action>
The directivity of the inverted F antenna 20A is the X-axis direction (vertical direction) as shown in FIG. 4A. Therefore, the inverted F antenna 20A transmits and receives a vertically polarized signal. On the other hand, the directivity of the inverted F antenna 20B is the Y-axis direction (horizontal direction) as shown in FIG. 4B. Therefore, the inverted F antenna 20B receives the horizontally polarized signal.

  As described above, since the polarization diversity antenna is configured by the inverted F antenna 20A and the inverted F antenna 20B, the radio signal transmission / reception unit 201 receives the received vertical polarization signal and the received horizontal polarization signal. Use to improve the quality of the radio signal transmitted to the television receiver 1.

  The control unit 200 controls transmission and reception of radio signals in the radio signal transmission / reception unit 201. For example, the control unit 200 receives a signal representing program content through the wireless LAN base unit 2 in the form of a wireless signal. Alternatively, the control unit 200 transmits a signal for requesting distribution of the program content desired by the user to the wireless LAN base unit 2 in the form of a wireless signal.

<Effect>
According to this configuration, as described above, the notch 12 is formed in the heat sink 10 provided in the vicinity of the surface of the casing 1000 of the television receiver 1 in advance for heat dissipation, thereby forming the inverted F antennas 20A and 20B. To do. Therefore, since the inverted F antennas 20A and 20B having a simple structure can be provided near the surface of the casing 1000 of the television receiver 1, the inverted F antennas 20A and 20B can have a simple structure and wireless. Signal transmission / reception performance can be improved.

  Further, since the notch 12 is formed in the heat sink 10 provided in advance for heat dissipation to form the inverted F antennas 20A and 20B, it is not necessary to newly provide a member functioning as an antenna, so that no cost is required.

  As a result, it is possible to provide a wireless communication device that has a simple structure and is inexpensive and excellent in transmission and reception performance.

  According to the first embodiment, the inverted F antennas 20A and 20B are formed on the heat sink 10, but the present invention is not limited to this example.

  For example, the reverse F antennas 20A and 20B may be formed on an electromagnetic shield case (conductive member) provided on a circuit board so as to cover the electronic component in order to electromagnetically shield the electronic component from the outside. Good. Even if the inverted F antennas 20A and 20B are formed in the electromagnetic shield case, the same effects as described above can be obtained.

(Modification)
FIG. 5 is a perspective view schematically showing a configuration of a main part of the television receiver 1A according to a modification of the present invention. FIG. 6A is a partial enlarged view showing a state in which a portion where the inverted F antenna 20C is formed in the upper outer frame 401A of the liquid crystal module 400 is enlarged. FIG. 6B is a partial enlarged view showing a state in which a portion where the inverted F antenna 20D is formed in the right outer frame 401D of the liquid crystal module 400 is enlarged.

  As shown in FIG. 5, the television receiver 1 </ b> A includes a control unit 200, a wireless signal transmission / reception unit 201, and a liquid crystal module 400. In the second embodiment, the liquid crystal module 400 is configured such that the four outer frames 401A to 401D of the liquid crystal module 400 are located in the housing 1000 and the liquid crystal cell 403 is exposed to the outside of the housing 1000. And attached to the television receiver 1A.

  The liquid crystal module 400 includes a liquid crystal cell 403, an upper outer frame 401A that covers the upper surface of the liquid crystal cell 403, a lower outer frame 401B that covers the lower surface of the liquid crystal cell 403, and a left (side) outer portion that covers the left surface of the liquid crystal cell 403. A frame 401C and a right (side) outer frame 401D that covers the right surface of the liquid crystal cell 403 are provided.

  The upper outer frame 401A is an outer frame parallel to the ground. Accordingly, the upper outer frame 401A has a parallel surface 401AS parallel to the ground. The right outer frame 401D is an outer frame perpendicular to the ground. Therefore, the right outer frame 401D has a vertical surface 401DS perpendicular to the ground.

  As shown in FIG. 6A, the notch 12 is formed on the parallel surface 401AS of the upper outer frame 401A so that the inverted F-shaped portion remains, thereby forming the inverted F antenna 20C (parallel surface antenna). Yes. Further, as shown in FIG. 6B, a notch 12 is formed on the vertical surface 401DS of the right outer frame 401D so that an inverted F-shaped portion remains, whereby an inverted F antenna 20D (vertical surface antenna) is formed. Is formed.

  The inverted F antennas 20C and 20D include a main body portion 402A, a short-circuit portion 402B, and a power feeding portion 402C. And the short circuit part 402B is earth | grounded, and high frequency electric power is supplied to the electric power feeding part 402C so that these reverse F antennas 20C and 20D can transmit / receive a radio signal. Accordingly, the inverted F antennas 20C and 20D can transmit and receive a radio signal through the main body portion 402A.

  In the inverted F antenna 20C, the main body portion 402A is formed on a parallel surface 401AS parallel to the ground. Therefore, the directivity of the inverted F antenna 20C is perpendicular to the ground. In one inverted F antenna 20D, the main body portion 402A is formed on a vertical surface 401DS perpendicular to the ground. Therefore, the directivity of the inverted F antenna 20D is horizontal with respect to the ground.

  The inverted F antenna 20C and the inverted F antenna 20D constitute a so-called polarization diversity antenna.

<Effect>
Since the directivity of the inverted F antenna 20C is in the vertical direction, the inverted F antenna transmits and receives a vertically polarized signal. On the other hand, since the directivity of the inverted F antenna 20D is in the horizontal direction, the inverted F antenna 20D receives a horizontally polarized signal.

  As described above, since the polarization diversity antenna is configured by the inverted F antenna 20C and the inverted F antenna 20D, the radio signal transmission / reception unit 201 receives the received vertical polarization signal and the received horizontal polarization signal. Use to improve the quality of the radio signal transmitted to the television receiver 1A. Thereby, the same effect as described above can be obtained.

(Embodiment 2)
<Configuration of wireless communication device>
FIG. 7 is a perspective view schematically showing the configuration of the main part of the television receiver 1B according to Embodiment 2 of the present invention. In the second embodiment, a predetermined range (a range indicated by black solid coating in the parallel surface 100) of the parallel surface 100 of the heat sink 10 is a portion other than the range (in the parallel surface 100, The inverted F antenna 20E is formed by being cut and raised vertically with respect to (a non-solid black area). In the second embodiment, the same components as those shown in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The inverted F antenna 20E is formed by forming a notch 12 in an inverted F shape on the parallel surface 100 of the heat sink 10 and bending the remaining inverted F-shaped portion by 90 degrees with respect to the parallel surface 100. .

  Similarly to the inverted F antennas 20A to 20D, the inverted F antenna 20E is connected to the radio signal transmitting / receiving unit 201 and supplied with high frequency power, a power feeding unit 101C, a grounded short circuit unit 101B, and a main body unit 101A. With.

<Effect>
Since the inverted F antenna 20E is formed on the parallel surface 100 of the heat sink 10 perpendicularly to the parallel surface 100 as in this configuration, the inverted F antenna 20E is more closely connected to the surface of the housing 1000 (see FIG. 1). Therefore, better transmission / reception performance can be ensured.

  In the second embodiment, a predetermined range of the parallel surface 100 of the heat sink 10 is cut vertically with respect to a portion other than the range, thereby forming the inverted F antenna 20E. . However, the present invention is not limited to this example, and an inverted F antenna is formed by vertically raising a predetermined range of the vertical surface 101 of the heat sink 10 with respect to a portion other than the range. It may be.

  Also in this manner, the inverted F antenna formed so as to be vertically raised from the vertical surface 101 is provided at a position where the vertical surface 101 of the heat sink 10 is close to the surface of the housing 1000 (for example, the side surface of the housing 1000). In some cases, since it is close to the surface of the housing 1000, better transmission / reception performance can be ensured.

(Embodiment 3)
<Configuration of wireless communication device>
FIG. 8 is a perspective view schematically showing the configuration of the main part of the television receiver 1C according to Embodiment 3 of the present invention. FIG. 9 is a partial enlarged view showing a state in which a portion of the heat sink 10A where the inverted F antenna 20F is formed is enlarged. Note that in the third embodiment, the same components as those shown in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  According to the third embodiment, the heat sink 10A (conductive member) has the inclined surface 1010 and the right side surface 1011. As shown in FIG. 9, the inverted F antenna 20 </ b> F is formed by forming the notch 12 in the inclined surface 1010 so that an inverted F-shaped portion remains on the inclined surface 1010.

  In the first embodiment, the substantially rectangular parallelepiped portion 101E is dropped from the heat sink 10 due to the formation of the notch 12. However, in the third embodiment, the substantially rectangular parallelepiped portion 101E is formed on the right side surface. Since it is connected to 1011, it does not fall off from the heat sink 10 </ b> A.

<Effect>
According to this configuration, since the inverted F antenna 20F is formed on the inclined surface 1010, the directivity of the inverted F antenna 20F is the horizontal direction and the vertical direction. Therefore, the vertical polarization signal and the horizontal polarization signal can be transmitted / received by one inverted-F antenna 20F, so that the cost of forming the antenna can be further reduced.

  In the above description, the inverted F antenna is exemplified as the shape of the antenna, but is not limited to this example, and may be an L shape, a U shape, or a meander line shape.

  As described above, the wireless communication apparatus of the present invention has been described based on the embodiment, but the present invention is not limited to this embodiment. Unless it deviates from the meaning of this invention, the form which carried out the various deformation | transformation which those skilled in the art can think to this embodiment, and the structure constructed | assembled combining the component in different embodiment is also contained in the scope of the present invention. .

  The present invention can be applied to all wireless communication apparatuses in which a reduction in thickness and an improvement in transmission / reception performance are desired.

1, 1A, 1B, 1C Television receiver 2 Wireless LAN master unit 3 Router 4 On-demand content server 10, 10A Heat sink 12 Notch 20A, 20B, 20C, 20D, 20E, 20F Reverse F antenna 100, 401AS Parallel plane 101 , 401DS Vertical surface 101A, 402A Main body part 101B, 402B Short-circuit part 101C, 402C Power supply part 200 Control part 201 Radio signal transmission / reception part 300 Circuit board 400 Liquid crystal module 401A Upper outer frame 401B Lower outer frame 401C Left outer frame 401D Outside right part Frame 403 Liquid crystal cell 1000 Case 1010 Inclined surface N Communication network

Claims (12)

A housing,
A conductive member provided for a predetermined application on the side closer to the surface of the casing than the center of the casing, and a part of the conductive member. The conductive member in which the conductive member is cut out so that an antenna for transmitting or receiving a radio signal is formed,
A wireless communication device comprising: a wireless communication unit that transmits or receives the wireless signal using the antenna formed on the conductive member. The conductive member has a parallel plane parallel to the ground, and the antenna has a parallel plane antenna formed by a part of the parallel plane by cutting the parallel plane. The wireless communication apparatus according to claim 1. The radio communication apparatus according to claim 2, wherein the parallel plane antenna is cut and raised from the parallel plane. The conductive member has a vertical plane perpendicular to the ground, and the antenna has a vertical plane antenna formed by part of the vertical plane by cutting the vertical plane. The wireless communication apparatus according to claim 1. The wireless communication apparatus according to claim 4, wherein the vertical plane antenna is cut and raised from the vertical plane. The conductive member has a parallel surface parallel to the ground and an inclined surface extending obliquely downward from the end of the parallel surface toward the housing, and the antenna is formed by a part of the inclined surface. The wireless communication apparatus according to claim 1, wherein the inclined surface is cut out so as to be formed. The conductive member has a parallel plane parallel to the ground and a vertical plane perpendicular to the ground, and the parallel plane antenna formed by cutting the parallel plane as the antenna, The wireless communication device according to claim 1, further comprising: a vertical plane antenna formed by cutting out the vertical plane. The radio communication apparatus according to claim 7, wherein the parallel plane antenna and the vertical plane antenna constitute a polarization diversity antenna. The wireless communication apparatus according to claim 1, wherein the antenna is an inverted F antenna. The conductive member has a parallel plane parallel to the ground, and two vertical planes provided perpendicular to the ground and facing each other, so as to cover an electronic component mounted on a circuit board, and The wireless communication device according to claim 1, wherein the wireless communication device is a heat sink attached to the circuit board such that a parallel surface is in contact with the electronic component. The conductive member has a parallel plane parallel to the ground and two vertical planes provided perpendicular to the ground and facing each other, and covers the electronic component mounted on the circuit board. It is an electromagnetic shielding case attached. The radio | wireless communication apparatus of any one of Claims 1-9. Furthermore, the liquid crystal module having a substantially rectangular parallelepiped shape and having an upper surface, a lower surface, and two side surfaces,
The conductive member covers an upper surface of the liquid crystal module and has an upper outer frame having a parallel surface parallel to the ground, a lower outer frame covering the lower surface of the liquid crystal module and having the parallel surface, and the liquid crystal module The wireless communication device according to any one of claims 1 to 9, wherein the two side outer frames cover the side surfaces of each other and have a vertical surface perpendicular to the ground.

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