JP2006320892A - Oscillation apparatus, jet stream generator and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oscillation apparatus capable of generating efficient oscillation to an oscillator and effectively giving oscillation to a gas, a jet stream generator mounted with the oscillation apparatus and an electronic equipment mounted with the jet stream generator. <P>SOLUTION: The jet stream generator 10 is provided with the oscillation apparatus 15 having a frame 4, an actuator 5 attached to the frame 4, and an oscillator 3 supported to the frame 4 by an elastic support member 6. The oscillator 3 is constituted such that a side plate 3b is formed, for example, on a circular peripheral edge of a diaphragm 3a. Oscillation is given to air in chambers 11a and 11b by oscillating the oscillator 3 and the gas can be alternately delivered through nozzles 2a and 2b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vibration device for applying vibration to a gas in order to generate a jet of gas, a jet generation device equipped with the vibration device, and an electronic device equipped with the jet generation device.

  Conventionally, an increase in the amount of heat generated from a heating element such as an IC (Integrated Circuit) associated with high performance of a PC (Personal Computer) has been a problem, and various heat radiation technologies have been proposed or commercialized. Yes. As a heat dissipation method, for example, there is a method in which a heat dissipation fin made of a metal such as aluminum is brought into contact with the IC, and heat from the IC is conducted to the fin to dissipate heat. Also, there is a method of dissipating heat by forcibly removing, for example, warm air in a PC housing by using a fan and introducing ambient low-temperature air around the heating element. Alternatively, there is a method of forcibly removing the warm air around the radiating fin by the fan while using the radiating fin and the fan together to increase the contact area between the heating element and the air with the radiating fin.

  However, in such forced convection of air by the fan, there is a problem that a temperature boundary layer on the surface of the fin occurs on the downstream side of the radiating fin, and heat from the radiating fin cannot be efficiently taken. In order to solve such a problem, for example, the temperature of the temperature boundary layer can be reduced by increasing the wind speed of the fan. However, increasing the number of rotations of the fan in order to increase the wind speed has a problem in that noise from the bearing portion of the fan or noise due to wind noise caused by the wind from the fan occurs.

On the other hand, as a method of destroying the temperature boundary layer without efficiently using a fan as a blowing means and efficiently releasing the heat from the radiating fins to the outside air, there is a method of using a diaphragm that reciprocates periodically (for example, Patent Documents). 1, 2, 3, 4). Among these devices, in particular, the devices of Patent Documents 3 and 4 are a diaphragm that spatially bisects the interior of the chamber, an elastic body that supports the diaphragm and is provided in the chamber, and a means that vibrates the diaphragm. It has. In these apparatuses, for example, when the diaphragm is displaced upward, the volume of the upper space of the chamber decreases, so that the pressure of the upper space increases. Since the upper space communicates with the outside air through the intake / exhaust port, a part of the air inside the upper space is released into the outside air due to the pressure increase in the upper space. On the other hand, at this time, since the volume of the lower space on the opposite side of the upper space across the diaphragm increases, the pressure in the lower space decreases. Since the lower space communicates with the outside air through the intake / exhaust port, a part of the outside air in the vicinity of the intake / exhaust port is drawn into the lower space due to the pressure decrease in the lower space. On the contrary, when the diaphragm is displaced downward, the volume of the upper space of the chamber increases, so that the pressure of the upper space decreases. Since the upper space communicates with the outside air through the intake / exhaust port, a part of the outside air near the intake / exhaust port is drawn into the upper space due to the pressure drop in the upper space. On the other hand, at this time, the volume of the lower space on the opposite side of the upper space across the diaphragm is conversely decreased, so that the pressure in the lower space increases. Due to the pressure increase in the lower space, part of the air inside is released into the outside air. For example, an electromagnetic drive system is used to drive the diaphragm. As described above, by reciprocating the diaphragm, the operation of discharging the air in the chamber to the outside air and the operation of sucking the outside air into the chamber are periodically repeated. The air pulsation induced by the periodic reciprocating motion of the diaphragm is blown to a heating element such as a heat radiating fin (heat sink), so that the temperature boundary layer on the surface of the radiating fin is efficiently destroyed. As a result, the radiating fin is efficiently cooled.
Japanese Unexamined Patent Publication No. 2000-223871 (FIG. 2) JP 2000-114760 A (FIG. 1) JP-A-2-213200 (FIGS. 1 and 3) Japanese Patent Laid-Open No. 3-116961 (FIGS. 3 and 8)

  However, when the heat generation amount of the heating element is large, a device having a higher cooling capacity, that is, a gas ejection amount is required. In particular, since the amount of heat generated by a CPU (Central Processing Unit) continues to increase year by year, it is necessary to cool it efficiently. On the other hand, in order to increase the gas ejection amount, the amplitude of the diaphragm may be increased. However, when the amplitude is increased, the vibration plate is bent, and the gas cannot be effectively vibrated, and excessive noise may be generated to cause noise.

  In view of the circumstances as described above, an object of the present invention is to generate an effective vibration in a vibrating body and effectively give a vibration to a gas, a jet generating device equipped with the vibrating device, and An object of the present invention is to provide an electronic device equipped with this jet flow generator.

  In order to achieve the above object, a vibration device according to the present invention is a vibration device that vibrates the gas so that the gas contained in the housing is discharged as a pulsating flow through the opening of the housing. And a frame, a vibration plate having a surface substantially perpendicular to the vibration direction, and supported by the frame so as to be capable of vibration, and a drive unit that drives the vibration member.

  As a drive system of the drive unit, for example, an electromagnetic action, a piezoelectric action, or an electrostatic action can be used.

  Examples of the gas include air, but are not limited thereto, and may be nitrogen, helium gas, argon gas, or other gases.

  In the present invention, the vibrator has a side plate provided on the diaphragm. Thereby, the rigidity of the vibrating body is increased, and the vibration can be effectively applied to the gas while suppressing the bending of the diaphragm. In addition, rather than making the diaphragm itself highly rigid, high rigidity is achieved in the entire vibrator by forming the side plates, and the weight of the vibrator does not increase.

  As will be described later, the side plate may be provided substantially perpendicular to the surface of the diaphragm, or may not be perpendicular. For example, the side plate may be provided so as to be connected to the diaphragm continuously or intermittently. That is, in the case of intermittent, a plurality of side plates are provided. The side plate can be provided around or inside the diaphragm.

  In the present invention, the vibrating body has a hole in the side plate. Thereby, the weight of the vibrating body can be reduced while maintaining the rigidity of the vibrating body. Thereby, low power consumption can be achieved.

  In the present invention, the vibrating body includes a rib member connected between the vibrating plate and the side plate. Thereby, the rigidity of the vibrating body can be further increased.

  In the present invention, the vibrating body has a hole in the rib member. Thereby, the weight of the vibrating body can be reduced while maintaining the rigidity of the vibrating body.

  In the present invention, the vibrating body is made of resin, paper, or metal. In particular, since the vibrating body is made of paper, the weight is very reduced. Even if the weight is reduced, there is no problem because the vibrator has a side plate and is highly rigid.

  In the present invention, for example, the surface is circular, elliptical, polygonal, or square. A square circle is a shape of a region surrounded by straight lines and curves, and examples thereof include a polygon having a circular corner.

  In the present invention, the side plate is erected on one side of the vibration direction of the diaphragm, and the drive unit has an actuator disposed on the one side for vibrating the vibrating body. Thereby, since the actuator is disposed so as to be surrounded by the side plate, the vibration device can be thinned.

  In the present invention, the diaphragm has a cone shape in which the diameter gradually increases toward one side of the vibration direction of the diaphragm, and the driving unit is disposed on the one side for vibrating the vibrating body. Having an actuated actuator. Thereby, since an actuator is arrange | positioned inside cone shape, a vibration apparatus can be reduced in thickness. In this case, if the vibrating body has a side plate erected toward the side opposite to the one side, it contributes to a reduction in the thickness of the vibration device as compared with the case where the oscillating body is erected on the one side. .

  In the present invention, the frame supports the side plate so as to be slidable. Thus, by having the side plate, it can be configured as if the frame is a cylinder and the vibrating body is a piston. Further, when the side plate slides on the frame and comes into contact with the frame, it is possible to suppress the lateral vibration or the like of the vibrating body and stably vibrate. For example, a surface treatment can be applied to the contact portion between the frame and the side plate so as to be slidable.

  In the present invention, the frame slidably supports the side plate by a gap or a lubricant provided between the frame and the side plate. Thereby, a vibrating body can vibrate smoothly.

  In the present invention, the vibrating body includes a peripheral portion of the diaphragm that is slidably supported by the frame, and a protrusion that is slidably supported by the frame and protrudes from the side plate. Thereby, compared with the case where the whole side plate contacts a flame | frame, frictional resistance can be made small, power consumption can be reduced, and noise can also be suppressed.

  In the present invention, the vibration device is disposed between the frame and the side plate so as to prevent the gas from flowing from one side of the vibration direction to the opposite side of the vibration plate, and supports the vibration body. And a second elastic support member disposed between the frame and the side plate so as to be aligned with the first elastic support member in the vibration direction and supporting the vibrating body. It has. Thus, by supporting the side plate by the first and second elastic support members arranged in the vibration direction, it is possible to prevent lateral vibration of the vibrating body and obtain stable vibration. The second elastic support member may or may not have a function of preventing gas from flowing from one side of the vibration plate to the opposite side.

  In particular, the side plate is provided on a side opposite to the first end to which the first elastic support member is connected, and the first end in the vibration direction, and the second elastic support member is connected to the side plate. It is sufficient that the second end portion is provided. That is, more stable vibration can be obtained by increasing the distance between the first and second elastic support members as much as possible.

  In the present invention, the second elastic support member is a plurality of leaf springs. Or a plurality of wires. By configuring the second elastic support member with such a relatively thin member, it is possible to reduce the original vibration resistance in the vibration direction while preventing the vibration body from sideways.

  In the present invention, the first and second elastic support members are made of the same material. The first and second elastic support members may have substantially the same shape as well as the material.

  In this invention, the said vibration apparatus is arrange | positioned between the said flame | frame and the said vibration body so that the said gas may not distribute | circulate from the one side of the said vibration direction of the said diaphragm to the other side, and supports the said vibration body. It further comprises a bellows-like first elastic support member. A plurality of peaks and valleys of the bellows-like elastic support member may be provided.

  In the present invention, the vibrating body includes a side plate that is provided on the diaphragm and to which the first elastic support member is connected, and the vibration device is aligned with the first elastic support member in the vibration direction. In addition, the first elastic support member is disposed between the frame and the side plate so as to be substantially symmetrical with respect to the vibration direction of the vibrating body, and has a bellows-like first shape that supports the vibrating body. 2 elastic support members are further provided. In particular, when the elastic support member has a bellows shape, when the ridges and ridges of each elastic support member face each other and the valleys and the valleys face each other, that is, when they are not symmetrical, from the neutral point of the vibrator There is a possibility that the vibrations on the both sides are different and efficient vibration cannot be obtained. That is, by arranging the elastic support members symmetrically, the amplitudes on both sides from the neutral point of the vibrating body when the vibrating body is not oscillating are the same, and efficient vibration is obtained.

  In the present invention, the first elastic support member includes one valley portion disposed on the vibrating body side and one mountain portion disposed on the frame side, and the driving unit includes the vibrating body. And a power supply line connected to the actuator so as to pass through the air in the vicinity of the first elastic support member. The first elastic support member has a smaller amplitude on the outer frame side and a larger amplitude on the inner vibrating body side. Therefore, by arranging the trough on the side of the vibrating body having a large amplitude, the space in which the power supply line moves with vibration is widened, that is, the degree of freedom of movement of the power supply line is increased and disconnection can be prevented.

  In the present invention, the area of the surface of the diaphragm is an area of a portion in a plane substantially parallel to the surface of the diaphragm and surrounded by a portion where the first elastic support member is in contact with the frame. 70% or less. If it exceeds 70 percent, the vibration resistance of the vibrating body increases, and noise may increase. Preferably, it is 60 percent or less.

  In the present invention, the vibrating body is made of the same material as the vibrating plate, and has an elastic support portion that supports the vibrating plate by being attached to the frame around the vibrating plate. By forming the elastic support portion integrally with the vibrating body, the vibrating body can be easily manufactured.

  In the present invention, the drive unit has a magnet and a circulation port for circulating the gas, is mounted on the vibrating body and is provided so as to surround the magnet, and wound around the bobbin Coil. That is, the drive unit has a voice coil. In the present invention, the volume of the space between the bobbin and the magnet changes as the bobbin moves. When the bobbin does not have a circulation port, a change in atmospheric pressure in the bobbin internal space becomes a vibration resistance of the vibrating body. However, according to the present invention, since the gas in the internal space can escape to the outside of the bobbin through the flow port, it can be vibrated efficiently.

  In the present invention, the diaphragm has a hole portion penetrating in the vibration direction at substantially the center thereof, and the driving portion includes a coil mounted in the hole portion and the hole portion surrounded by the coil. A flat yoke disposed in the vicinity; and at least two magnets provided so as to sandwich the yoke. According to such a configuration, a relatively large magnet can be used. Therefore, the magnetic force can be increased and the vibration can be increased. In view of such effects, the diaphragm has a hole that penetrates in the vibration direction at substantially the center thereof, and the driving unit is surrounded by a coil mounted in the hole and the coil. As described above, a flat yoke disposed near the hole and at least two magnets provided so as to sandwich the yoke may be included.

  In this invention, the said drive part has an actuator which has a magnet with a residual magnetic flux density of 0.3-3.0T. The reason for setting it to 0.3 T or more is to obtain a desired magnetic flux density even when the vibration device is downsized and the magnet is downsized. Moreover, it is because it will become expensive when it becomes 3.0T or more. For example, the magnet is a neodymium magnet.

  In the present invention, the drive unit includes a terminal block mounted on the frame, an actuator having a magnet and a coil, and a power supply line connected between the terminal block and the coil. The presence of the terminal block on the frame prevents disconnection and facilitates wiring during manufacture of the jet flow generating device on which the vibration device is mounted.

  In the present invention, the minimum bending radius of the feeder line is approximately five times the thickness of the feeder line. Thereby, disconnection of the feeder line due to vibration of the vibrating body can be prevented. This is because if it is less than 5 times, stress concentrates on the bent portion and breaks easily. The “minimum bend radius” is the bend radius of the portion of the feeder line where the bend radius is minimum.

  In the present invention, the feed line is twisted. Thereby, disconnection can be prevented. As such a feeder line, for example, a robot cable or the like is used.

  In this invention, the said actuator is arrange | positioned at the one side of the said vibration direction of the said diaphragm, and the said feeder is extended in the other side of the said one side of the said diaphragm. As described above, in the case of a feeder line having a bending radius, if the wiring is performed as in the present invention, it can be wired with a gentle curve. Further, since there is only a chamber space on the opposite side of the actuator, there is an advantage that wiring is easy.

  In the present invention, the vibration body includes a side plate having a through hole, and the vibration device includes the frame and the side plate so that the gas does not flow from one side of the vibration direction to the opposite side of the vibration plate. Between the frame and the side plate so as to be aligned with the first elastic support member substantially in the vibration direction, and disposed between the frame and the side plate, A second elastic support member that supports the vibrating body, and the power supply line is inserted into the through hole and disposed between the first and second elastic support members. Yes. Thereby, thickness reduction is realizable.

  In the present invention, the thickness of the feeder line is 0.4 mm or more. Thereby, disconnection can be prevented. From the viewpoint of preventing disconnection, there is no upper limit to the thickness of the power supply line, but it is within a common sense range corresponding to the size of the vibration device. For example, the upper limit is 3 mm or less, or 5 mm or less.

  In the present invention, the cross section perpendicular to the longitudinal direction of the feeder line is flat. If appropriate wiring is performed in consideration of the airflow generated in the chamber by the vibrating body, turbulent airflow due to the presence of the power supply line can be prevented, and noise caused by wind noise can be suppressed.

  In the present invention, the drive unit includes a terminal block mounted on the frame, and an actuator including a magnet and a coil, and the vibrating body includes a side plate provided on the diaphragm, and the vibration device Is made of a conductive material capable of supplying power to the actuator, and further includes an elastic support member that is disposed between the frame and the side plate and supports the vibrating body. Thereby, it can manufacture without using a feeder as much as possible, and there is no fear of a disconnection.

  In the present invention, the frame has a circulation port for circulating the gas. Thereby, it is possible to generate an appropriate air flow due to the vibration of the vibrating body from the inside to the outside of the frame.

  In the present invention, the vibrating body has a cylindrical shape having first and second vibrating plates connected to both ends of the vibration direction of the side plate, and the driving unit is an actuator for vibrating the vibrating body. In the cylindrical vibrating body. For example, if an actuator is attached to a portion fixed to the casing of the jet flow generating device on which the vibration device is mounted, the outside of the vibration member has only a chamber space. Thereby, the gas in the housing | casing outside a vibrating body can be ejected out of a housing | casing smoothly and efficiently. Along with this, noise can be reduced. Alternatively, the drive unit includes an actuator for vibrating the vibrating body, and the vibrating body includes a first diaphragm connected to the actuator and the first diaphragm substantially in the vibration direction. And a second diaphragm that vibrates in synchronization with the first diaphragm due to a change in pressure of the gas that is generated when the first diaphragm vibrates by driving of the actuator.

  In the present invention, the drive unit includes an actuator having a magnet and a coil, and a part of the frame is made of a magnetic material for constituting a magnetic circuit of the actuator. Thereby, since at least a part of the frame also functions as a magnetic circuit, the magnetic flux density can be increased.

  A jet flow generating apparatus according to the present invention includes a frame, a diaphragm having a surface substantially perpendicular to a vibration direction, a vibrating body supported by the frame so as to be vibrated, an opening, and supports the frame. In addition, a housing including a gas inside and a drive unit for driving the vibrating body to vibrate the gas to discharge the gas as a pulsating flow through the opening. For example, if the vibrating body has a side plate, the rigidity of the vibrating body is increased, and the vibration can be effectively applied to the gas by suppressing the bending of the vibrating plate.

  In the present invention, the casing has at least two openings, and at least two chambers provided so as to communicate with the openings on one side and the opposite side of the vibration plate, respectively. Have inside. Thereby, since gas is alternately discharged from each opening, each sound when discharged from each opening becomes an opposite phase and weakens, so that noise can be suppressed. If at least two chambers have the same volume, the apparatus is more symmetrical in the direction of vibration, so that the quietness can be further improved. However, the two chambers do not necessarily have to be the same.

  In this jet flow generation device, when there is no frame, the jet flow generation device has a vibration body having a vibration plate having a surface substantially perpendicular to the vibration direction, an opening, supports the vibration body in a vibrating manner, and has an internal structure. And a drive unit for driving the vibrating body and applying vibration to the gas to discharge the gas as a pulsating flow through the opening. That is, according to the present invention, the frame itself is constituted by a housing.

  In this invention, the said drive part has an actuator which has a magnet and a coil, and at least one part of the said housing | casing consists of a magnetic body for comprising the magnetic circuit of the said actuator. Thereby, since at least one part of a housing | casing serves as the function of a magnetic circuit, magnetic flux density can be raised.

  In the present invention, the housing has a first inner surface, a second inner surface, and a curved surface connecting the first inner surface and the second inner surface. For example, when there are corners or steps in the housing, vortices are likely to be generated at the corners or steps due to the generation of a gas flow due to the vibration of the vibrating body, which is one of the causes of noise. Since the curved surface is provided inside the housing in this way, the gas flow generated by the vibration of the vibrating body flows smoothly and noise can be reduced. The “first inner surface” and the “second inner surface” may be any inner surface of the entire inner surface of the housing as long as they are not parallel.

  In the present invention, the first inner surface is a surface parallel to the surface of the vibrator, and the second inner surface is a surface having the opening. In particular, since the curved surface is provided near the opening, that is, in the vicinity of the opening, the gas smoothly flows from the inside of the housing to the outside of the housing through the opening, and noise is reduced.

  In this invention, the said drive part has an actuator for vibrating the said vibrating body, The said housing | casing has the boss | hub part by which the said actuator is mounted | worn, and the curved surface provided in the surface of the said boss | hub part . Also by this, the gas flow generated by the vibration of the vibrating body flows smoothly and noise is reduced.

  In this invention, the said drive part has an actuator for vibrating the said vibrating body, and the said housing | casing has a boss | hub part by which the said actuator is mounted | worn. Providing the boss portion in this way facilitates positioning of the actuator during manufacture of the jet flow generating device.

  In the present invention, there is further provided an elastic support member that is partially different in elastic force and is attached to the housing to support the vibrating body. Specifically, the elastic support member only needs to have a first portion having a first thickness and a second portion having a thickness different from the first thickness. By providing the elastic support members having partially different thicknesses as described above, it is possible to absorb the flutter of the vibrating body and move the vibrating body straight in a desired direction when the vibrating body vibrates.

  An electronic apparatus according to the present invention includes a heating element, a frame, a diaphragm having a surface substantially perpendicular to a vibration direction, a vibrating body supported by the frame so as to be capable of vibrating, an opening, and the frame. And a pulsating flow of the gas toward the heating element through the opening by driving the vibrating body and applying vibration to the gas. And a second casing capable of holding the heat generating body and the jet generating device.

  The second housing means that the heating element and the jet generating device can be “held”. The heating element and the jet generating device do not necessarily need to be “accommodated”. This means that it may be exposed to the outside of the housing.

  Examples of the heating element include an electronic component such as an IC and a resistor, a heat radiating fin (heat sink), and the like.

  In this electronic apparatus, when there is no frame, the electronic apparatus has a heating element, a vibration body having a vibration plate having a surface substantially perpendicular to the vibration direction, and an opening, and supports the vibration body so as to vibrate. And a housing for containing gas inside, and driving for ejecting the gas as a pulsating flow toward the heating element through the opening by driving the vibrating body and applying vibration to the gas. Part.

  As an electronic device, as an electronic device, in the case of a personal computer, it may be a laptop type or a desktop type, a PDA (Personal Digital Assistance), an electronic dictionary, a camera, a display device, Examples include audio / visual devices, projectors, mobile phones, game devices, car navigation devices, robot devices, and other electrical appliances.

  In the present invention, the electronic device further includes a second casing that houses the heating element, and a part of the second casing is configured by a part of the first casing. Thereby, size reduction or thickness reduction of an electronic device is realizable.

  As described above, according to the present invention, efficient vibration can be generated in the vibrating body, and vibration can be effectively applied to the gas.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a jet flow generating apparatus according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the jet flow generating device shown in FIG.

  The jet generating device 10 includes a casing 1 having a cylindrical rear portion and a vibration device 15 disposed in the casing 1. A plurality of nozzles 2 a and 2 b are arranged on the front surface 1 a of the housing 1. As shown in FIG. 2, the inside of the housing 1 is separated into an upper chamber 11a and a lower chamber 11b by a vibration device 15 and a mounting portion 7 to which the vibration device 15 is attached. Openings 12a and 12b are formed on the front surface 1a of the housing 1 to which the nozzles 2a and 2b are attached at positions corresponding to the nozzles 2a and 2b. Thereby, the upper chamber 11a and the lower chamber 11b communicate with the atmosphere outside the housing 1, respectively. The chambers 11a and 11b have substantially the same volume. That is, the upper chamber 11a is thicker in the vertical direction (thickness direction) in FIG. 2 than the lower chamber 11b because the vibration device 15 is disposed in the upper chamber 11a. Thereby, as will be described later, the amount of gas discharged alternately from the nozzles 2a and 2b can be made the same, and the quietness is improved.

  The vibration device 15 has a configuration similar to, for example, a speaker. The vibration device 15 includes a frame 4, an actuator 5 attached to the frame 4, and a vibrating body 3 supported on the frame 4 by an elastic support member 6. FIG. 3 is a perspective view showing the vibrating body 3. The vibrating body 3 is configured by forming a side plate 3b on the periphery of a circular diaphragm 3a. The side plate 3b is erected, for example, on the back surface 3a-2 side of the front surface 3a-1 and the back surface 3a-2 of the diaphragm 3a. The frame 4 is formed with a circulation port 4 a for circulating the air contained in the housing 1 inside and outside the frame 4.

  The vibrating body 3 is made of, for example, resin, paper, or metal. In particular, when the vibrating body 3 is made of paper, the weight is extremely reduced. Paper is not as easy to make in an arbitrary shape as resin, but it is advantageous in reducing the weight. Even if the weight is reduced, there is no problem because the vibrating body 3 has the side plate 3b and is highly rigid. When the vibrating body 3 is a resin, it can be easily formed into an arbitrary shape by molding. On the other hand, when the vibrating body 3 is a metal, there is a material that is lightweight and can be injection-molded, such as magnesium.

  FIG. 4 is an enlarged cross-sectional view showing the actuator 5. A magnet 14 magnetized in the vibration direction R of the diaphragm 3a is built inside the cylindrical yoke 8, and a disk-shaped yoke 18 is attached to the magnet 14, for example. The magnet 14 and the yokes 8 and 18 generate a magnetic field as shown in FIG. A coil bobbin 9 around which a coil 17 is wound enters and leaves the space between the magnet 14 and the yoke 8. That is, the actuator 5 is a voice coil motor. For example, an electric signal is supplied to the actuator 5 from a driving IC (not shown) through the feeder line 16. The yoke 8 is fixed to the inner center of the frame 4, and the coil bobbin 9 is fixed to the surface 3a-1 of the diaphragm 3a. The flat yoke 18 has, for example, a disk shape as described above. However, an ellipse or a rectangle may be used instead of a circle. A shape similar to the surface 3a-1 (or 3a-2) of the diaphragm 3a is considered reasonable. Such an actuator 5 can vibrate the vibrating body 3 in the direction of the arrow R.

  The housing 1 is made of, for example, resin, rubber, or metal. Resin and rubber are easy to produce by molding and are suitable for mass production. Further, when the housing 1 is made of resin or rubber, it is possible to suppress sound generated by driving the actuator 5, or airflow sound generated by vibration of the diaphragm 3a. That is, when the housing 1 is made of resin or rubber, the attenuation rate of those sounds also increases, and noise can be suppressed. Furthermore, it can respond to weight reduction and becomes low-cost. When the housing 1 is manufactured by injection molding of resin or the like, it can be molded integrally with the nozzles 2a and 2b. When the housing 1 is made of a material having high thermal conductivity, for example, metal, the heat generated from the actuator 5 can be released to the housing 1 and radiated to the outside of the housing 1. Examples of the metal include aluminum and copper. When considering thermal conductivity, carbon is not limited to metal. As the metal, magnesium that can be injection-molded can be used. When the leakage magnetic field from the magnetic circuit of the actuator 5 affects other devices of the device, it is necessary to devise to eliminate the leakage magnetic field. One of them is to make the housing 1 from a magnetic material such as iron. Thereby, the leakage magnetic field is reduced to a considerable level. Further, it may be a ceramic case for use at high temperatures or for special applications.

  As described above, when a highly heat conductive material is used for the housing 1 for heat dissipation, it is preferable that the frame 4 is also made of a material having high heat conductivity. In this case, the frame 4 is also made of metal or carbon. However, if the heat conduction is not considered much, the frame 4 is made of resin, for example. If it is resin, an inexpensive and lightweight frame can be produced by injection molding. A part of the frame 4 may be a magnetic material. Thereby, the yoke of the actuator 5 can be comprised with the magnetic body, and it is also possible to raise a magnetic flux density.

  The elastic support member 6 is made of, for example, rubber or resin. The elastic support member 6 has a bellows shape, and has an annular shape when viewed from above. The vibrating body 3 is mainly supported by the actuator 5, but the elastic support member 6 has a function of supporting the vibrating body 3 in order to prevent a lateral shake that is a shake in a direction perpendicular to the vibration direction R of the vibrating body 3. have. Further, as described above, the elastic support member 6 separates the chambers 11a and 11b, and prevents the gas from flowing between the chambers 11a and 11b when the vibrating body 3 vibrates. The elastic support member 6 has a bellows shape, and the number of peaks and valleys is preferably one each as shown in FIG. Hereinafter, this is called 2 rolls. In the case of only one valley or only one peak, the height in the vertical direction in FIG. 2 is increased, and contrary to thinning, when there are a plurality of peaks and valleys, the vibrating body 3 vibrates. This is because complicated movements other than the vibration direction R may occur and the efficiency may decrease.

  In addition, although it was set as the structure in which the nozzles 2a and 2b were provided in the housing | casing 1, you may be the structure in which the opening was provided in the housing | casing 1 instead of a nozzle.

  The operation of the jet flow generating device 10 configured as described above will be described.

  For example, when a sinusoidal AC voltage is applied to the actuator 5, the vibrating body 3 performs sinusoidal vibration. Thereby, the volume in chamber 11a and 11b increases / decreases. As the volumes of the chambers 11a and 11b change, the pressures in the chambers 11a and 11b change, and accordingly, an air flow is generated as a pulsating flow through the nozzles 12a and 12b, respectively. For example, when the vibrating body 3 is displaced in a direction that increases the volume of the chamber 11a, the pressure in the chamber 11a decreases and the pressure in the chamber 11b increases. Thereby, the air outside the housing 1 flows into the chamber 11a through the nozzle 12a, and the air in the chamber 11b is jetted out through the nozzle 12b. On the contrary, when the vibrating body 3 is displaced in the direction of decreasing the volume of the chamber 11a, the pressure of the chamber 11a increases and the pressure of the chamber 11b decreases. Thereby, the air in the chamber 11a is ejected to the outside through the nozzle 12a, and the outside air flows into the chamber 11b through the nozzle 12b. When air is ejected from the nozzles 12a and 12b, the atmospheric pressure around the nozzles 12a and 12b decreases, so that the ambient air is caught in the air ejected from each nozzle. That is, this is a synthetic jet. Such a synthetic jet is blown to the heating element and the high temperature part, whereby the heating element and the high temperature part can be cooled.

  On the other hand, when air is ejected from the nozzles 12a and 12b, noise is generated independently from the nozzles 12a and 12b. However, since each sound wave generated by each nozzle 12a and nozzle 12b is a sound wave having an opposite phase, it is weakened. As a result, noise is suppressed, and noise reduction can be achieved.

  According to the present embodiment, since the vibrating body 3 includes the side plate 3b, the rigidity of the entire vibrating body 3 is increased, and the vibration of the vibrating plate 3a can be suppressed and vibration can be effectively applied to the gas. Also, the diaphragm 3a itself is not thickened to make it highly rigid, but the side plate 3b is formed, so that the diaphragm 3 as a whole achieves high rigidity, and the weight of the vibrator 3 does not increase.

  FIG. 6 is a perspective view showing another embodiment of the vibrating body. In the embodiments described below, the same members, functions, and the like according to the embodiments shown in FIGS. 1 to 4 will be described briefly or omitted, and different points will be mainly described. In addition, the material of each member can be basically made of the above-described materials. The vibrating body 13 is incorporated in the vibrating device 15 in the same manner as in the state shown in FIG. The vibrating body 13 is provided with a plurality of holes 13d in the side plate 13b. The number of holes 13d is not necessarily plural, and may be one. Thereby, it is possible to reduce the weight of the vibrating body while maintaining the rigidity of the vibrating body 13 and to reduce power consumption.

  FIG. 7 is a perspective view showing still another form of the vibrating body. In the vibrating body 23, a plurality of holes 23d are provided in the side plate 23b in the same manner as the vibrating body 13 shown in FIG. Furthermore, a rib 23e is provided so as to connect the diaphragm 23a and the side plate 23d. Thereby, the rigidity of the vibrating body 23 is further increased.

  As in the vibration body 33 of still another form shown in FIG. 8, even if the hole 33e-1 is provided in the rib 33e, the weight can be reduced. When the vibrating bodies 13, 23 and 33 as shown in FIGS. 6 to 8 are made of, for example, a resin, even the shapes such as these vibrating bodies 13, 23 and 33 can be manufactured by injection molding the resin.

  FIG. 9 is a plan view showing another embodiment of the shapes of the vibrating bodies 3 and 13 and the vibrating plate 3a of other vibrating bodies. An ellipse may be used as shown in FIG. 9A, or an ellipse may be used as shown in FIG. The shapes shown in FIGS. 9C to 9E are a square, a rectangle, and a rectangle with curved corners, respectively. As described above, the planar shape of the diaphragm 3a and the like may be an arbitrary shape. However, in the case of a circle, it is easy to manufacture including a mold. When the vibration device having the diaphragm shown in FIGS. 9C to 9E is mounted on the casing 1, it is desirable that the planar shape of the casing 1 is also rectangular according to the shape of the diaphragm. . For example, since an axial fan or the like rotates and blows air, the planar shape is circular. On the other hand, the diaphragm of the jet generator 10 does not necessarily have to be a circle, and a flexible shape can be realized as shown in FIGS. Since the shape can be flexibly supported in this way, for example, when the jet flow generating device 10 is mounted on an electronic device such as a PC, the degree of freedom of the arrangement and shape is increased.

  Further, the upper surface and the lower surface of the casing 1 of the jet flow generating device 10 can be similar to the surface of the diaphragm having any shape as shown in FIG. As a result, an efficient air flow that is optimal for the shape of the diaphragm can be generated inside the housing 1.

  FIG. 10 is a cross-sectional view showing another embodiment of the vibration device. FIG. 11 is a perspective view thereof. In the vibrating device 25, the vibrating body 3 is attached to a cylindrical frame 24 via an elastic support member 6. The frame 24 is provided with two long air circulation ports 24a close to 180 °, for example, on the side surfaces thereof. In the vibrating body 3, the actuator 5 is disposed on the surface 3a-2 on the side where the side plate 3b is erected. That is, the direction of the vibrating body 3 is opposite to the state shown in FIG. Thereby, the whole vibration apparatus 25 can be reduced in thickness.

  FIG. 12 is a cross-sectional view showing a vibration device according to still another embodiment. The elastic support member 36 of the vibration device 45 is not bellows but has a straight section. The elastic support member 46 of the vibration device 55 shown in FIG. 13 is composed of only one trough. Even with such elastic support members, it is possible to prevent the air from flowing on the front surface and the back surface side of the diaphragm 3.

  FIG. 14 is a cross-sectional view showing a vibration device according to still another embodiment. The elastic support member 76 of the vibration device 95 has one peak and two valleys. Thus, it is good also as a bellows of two or more rolls.

  FIG. 15 is a cross-sectional view showing a vibration device according to still another embodiment. In addition to the first elastic support member 6 (hereinafter referred to as an edge member), a second elastic support member 26 (hereinafter referred to as a damper) is provided between the side plate 3b of the vibrating body 3 and the frame 4 of the vibration device 35. Is attached). The damper 26 has an annular shape, for example. The edge member 6 and the damper 26 are connected to both ends of the side plate 3b in the vibration direction. In this way, by supporting the side plate 3b at two positions in the vibration direction R, it is possible to prevent the vibration of the vibrating body 3 and obtain stable vibration.

  FIG. 16 is a cross-sectional view showing a vibration device according to still another embodiment. 17 is a cross-sectional view taken along line AA in FIG. The damper 56 of the vibration device 65 has, for example, a leaf spring shape. Further, as shown in FIG. 18, the damper 66 may be formed in a wire shape. By configuring the dampers 56 and 66 with such relatively thin members, it is possible to reduce the original vibration resistance in the vibration direction while preventing the vibration of the vibrating body 3.

  The edge member 6a and the damper 6b of the vibration device 105 shown in FIG. 19 have the same shape and are made of the same material. Even with such a configuration, the vibration of the vibrating body 3 can be stabilized. Further, since the edge member 6a and the damper 6b are the same, they are suitable for mass production and inexpensive.

  Although the edge member 6a and the damper 6b of the vibration device 115 shown in FIG. 20 are the same, they are symmetrical in the vibration direction of the vibrating body 3. With such a configuration, the amplitudes on both sides from the neutral point of the vibrating body 3 when the vibrating body 3 is not vibrating become the same, and efficient vibration can be obtained. When the feeder line 16 is wired as shown in FIG. 20, the damper 6b, which is an elastic support member on the side close to the feeder line 16, has a mountain portion on the frame 4 side (outside) and a vibrating body 3 side (inside ) Is arranged to be a valley. Usually, the amplitude of the edge member 6a and the damper 6b is larger on the inner vibrating body 3 than on the outer frame 4 side. Therefore, by arranging the trough on the vibrating body 3 side having a large amplitude, the space in which the power supply line 16 moves with vibration is widened, that is, the degree of freedom of movement of the power supply line 16 is increased and disconnection can be prevented.

  FIG. 21 is a cross-sectional view showing a vibration device according to still another embodiment. This vibration device 85 has a cylindrical frame 34 as in FIG. The diaphragm 33a of the vibrating body 33 has a cone shape, and the actuator 5 is disposed on the inner surface 33a-2 of the cone-shaped diaphragm 33a. The side plate 33b of the vibrating body 33 is erected on the surface 33a-1 side opposite to the surface 33a-2. Between the side plate 33b and the frame 34, the edge member 6a and the damper 6b are disposed so as to be symmetrical. With such a configuration, the vibration device 85 can be made very thin.

  FIG. 22 is a cross-sectional view showing a vibration device according to still another embodiment. The vibrating device 125 includes a vibrating body 43 that slides inside the cylindrical frame 44. The vibrating body 43 is configured by providing side plates 43b erected on both sides in the vibration direction R at the periphery of the vibrating plate 43a. The side plate 43b and the inside of the frame 44 are in a relationship like a piston and a cylinder. Also with such a configuration, it is possible to stably vibrate by suppressing the lateral vibration or the like of the vibrating body 43. In this case, in order to reduce the frictional resistance of the side plate 43b to the frame 44, it is preferable that a fluid 47 such as a lubricating oil is applied. Alternatively, surface treatment for reducing frictional resistance may be performed on at least one of the inner surface of the frame 44 and the contact surface of the side plate 43b. Examples of this surface treatment include Teflon (registered trademark) processing.

  A vibration device 135 illustrated in FIG. 23 is a modification of the vibration device 125 illustrated in FIG. 22. The peripheral edge of the diaphragm 53a and the peripheral edge of a protrusion 53c such as a flange protruding radially from the side plate 53b are in contact with the inside of the frame 44. Thereby, the contact area between the vibrating body 53 and the frame 44 can be reduced as much as possible, and the frictional resistance can be reduced.

  In the vibration device 125 shown in FIG. 22, the side plate 43b and the frame 44 do not necessarily have to be in contact with each other, and only a gap may be provided between them. The gap may be a sufficiently narrow interval that substantially eliminates air flow between the front surface 43a-1 side and the back surface 43a-2 side of the vibrating body 43. The same applies to the vibration device 135 shown in FIG.

  FIG. 24 is a cross-sectional view showing a vibration device according to still another embodiment. In the vibrating body 63 of the vibrating device 145, an edge portion 63b is integrally provided at a peripheral portion of a cone-shaped diaphragm 63a. For example, when the vibrating body 63 is made of, for example, resin, it can be manufactured by injection molding, and the number of parts is reduced, which is advantageous in terms of cost. For example, even if the vibrating body 63 is a metal, it can be integrally formed with a mold.

  FIG. 25 is a cross-sectional view showing a vibration device according to still another embodiment. The vibrating body 73 of the vibrating device 155 is a cone-shaped diaphragm. A gap 52 is provided between the peripheral edge of the vibrating body 73 and the frame 54. The gap 52 may be an interval that substantially eliminates air flow between the front surface 73a-1 side and the back surface 73a-2 side of the vibrating body 73.

  FIG. 26 is a modification of the vibration device 155 shown in FIG. The vibration device 165 includes the vibrating body 3 having the side plate 3b as shown in FIG. 2 and the like, and a sufficiently narrow gap 52 is provided between the side plate 3b and the frame 54.

  FIG. 27 is a plan view of the vibration devices 15, 25, 35 and the like described so far when viewed from the opening end side (lower side) of the frame 4. For example, the area A of the surface 3a-1 or 3a-2 perpendicular to the vibration direction of the vibration plate 3a of the vibrating body 3 and the area B that is a portion in a plane substantially parallel to the surface and surrounded by the edge member 6 are used. Then, it is preferable that the area B is 70% or less of the area A. If it exceeds 70 percent, the vibration resistance of the vibrating body increases, and noise may increase. According to our experiments, above 70 percent, humans began to become so loud that their noise was worrisome. Preferably, it is 60 percent or less.

  FIG. 28 is a cross-sectional view showing a vibration device according to still another embodiment. A hole 83 c is formed in the center of the vibrating body 83 of the vibration device 195. The actuator 191 includes two magnets 14, a flat yoke 18 sandwiched between them, and a coil 39 wound around a cylindrical coil bobbin 32 attached to the hole 83c. FIG. 29 shows the lines of magnetic force generated by the magnet 14 and the yoke 18 of the actuator 191. By using such a release magnetic field, the efficiency is lowered as compared with the closed magnetic circuit as described above, but the actuator 191 can be made symmetrical in the vibration direction R with respect to the diaphragm 83a. . In the symmetric structure, the sound levels before and after the diaphragm 83a can be made the same as much as possible, so that sound cancellation is efficiently performed in the opposite phase. Moreover, it is advantageous also for thickness reduction. Whether the magnetic circuit is closed or released may be selected according to the application.

  For example, in the actuator 191 as shown in FIG. 28, the magnet 14 is arranged inside the voice coil (the coil 39 and the coil bobbin 32), which is advantageous in that the arrangement space of the actuator 5 is reduced. The same can be said for the actuator 5 shown in FIG. However, in such actuators 5 and 191, the magnet 14 is generally designed to be small. If the magnet 14 is small, the magnetic flux density across the voice coil is small. Therefore, in order to increase the magnetic flux density in the voice coil even if the magnet diameter is small, it is necessary to use a magnet having a high residual magnetic flux density. A magnet having a residual magnetic flux density of 0.3 T (Tesla) or higher is preferable. Furthermore, if it is desired to increase the magnetic flux density in the gap, a magnet having a residual magnetic flux density of 1T to 3T or higher is recommended. If it is a magnet of 1T or more, it is possible to realize a jet flow generating device that has a cooling ability comparable to that of a rotary axial flow fan and can be compared in size. For example, neodymium iron has a residual magnetic flux density of 1.1 T, and can be said to be a magnet that satisfies the above requirements.

  FIG. 30 is a cross-sectional view showing a vibration device according to still another embodiment. The actuator 301 of the vibration device 205 is configured such that a flat yoke 28 having a hole 28a is sandwiched between two magnets 114 having a frame 44 fitted in a central hole 114a. . The diameter of the hole 28 a of the yoke 28 is smaller than the diameter of the magnet 114. In the vicinity of the hole 28 a of the yoke 28, a vibrating body 43 is disposed, and a coil 39 is wound around the outer peripheral surface of the side plate 43 b of the vibrating body 43. According to such a configuration, a relatively large magnet 114 is used. Therefore, the magnetic force can be increased and the vibration can be increased. Moreover, it can be set as a symmetrical structure with respect to the diaphragm 43a. In addition, it contributes to thinning.

  FIG. 31 is a cross-sectional view showing a modification of the vibration device 205 shown in FIG. The vibrating body 143 of the vibrating device 215 has a flange-like protrusion 143c similar to the vibrating body 53 shown in FIG. The peripheral edge portion of the protruding portion 143 c is in sliding contact with the inside of the frame 44. Alternatively, the lubricant is applied in the gap 52 or in the gap 52. Even with such a configuration, the same effect as that of the vibration device shown in FIGS. 23 and 31 can be obtained.

  FIG. 32 is a cross-sectional view showing a jet flow generating device including a vibration device 225 according to still another embodiment. In this vibration device 225, a cylindrical coil bobbin 37 around which the coil 17 is wound is provided with a plurality of flow ports 37 a for allowing air to flow between the inside and the outside of the coil bobbin 37. As the coil bobbin 37 moves, the volume of the space between the coil bobbin 37 and the magnet 14 (the space inside the coil bobbin 37) changes. When the coil bobbin 37 does not have the flow port 37a, the change in atmospheric pressure in the internal space of the coil bobbin 37 becomes the vibration resistance of the vibrating body 93. Further, when there is no circulation port 37a, air escapes through a narrow gap between the magnet 14 and the coil bobbin 38, and there is a possibility that sound may be generated at that time. However, with the configuration as shown in FIG. 32, the air in the internal space of the coil bobbin 37 can escape to the outside of the coil bobbin 37 through the flow port 37a, so that it can be vibrated efficiently. Moreover, noise can also be reduced. The number of the circulation ports 37a may be one. The shape of the circulation port 37a may be circular as shown in FIG. 33, or may be a long hole.

  In FIGS. 32 and 33, the vibrating body 93 is formed of a flat plate-like diaphragm. However, it is needless to say that the side plate may be provided as in each of the above embodiments.

  FIG. 34 is a cross-sectional view showing a vibration device according to still another embodiment. 35 is a cross-sectional view taken along line BB in FIG. The actuator of the vibration device 175 is composed of a magnet 14 attached almost at the center inside the cylindrical frame 44 and a planar coil 19 disposed on the vibration plate 3 a of the vibrating body 3 so as to face the magnet 14. Is done. A power supply line 16 is connected to the coil 19. The vibrating body 3 is preferably an insulating material such as resin, rubber, or paper. Alternatively, even if the vibrating body 3 is a conductive material, for example, an insulating sheet (not shown) may be attached between the diaphragm 3 a and the coil 19. For example, when an alternating voltage is applied to the coil 19, the vibrating body 3 vibrates in the vibration direction R by the release magnetic field generated by the magnet 14. In this embodiment, since the magnetic field is a release magnetic field, the magnetic flux density is lowered, but it is advantageous for thinning and symmetric shape.

  FIG. 36 is a cross-sectional view showing a vibration device according to still another embodiment. FIG. 37 is a plan view showing the vibrating body. The actuator of the vibration device 185 includes a plurality of magnets 14 arranged in the frame 64 and a plurality of planar coils 29 respectively disposed on a flat plate-like vibrating body 83 so as to face each magnet 14. In this example, six coils 29 and six magnets 14 are provided. Such an actuator can also vibrate the vibrating body 83 in the vibration direction R by the release magnetic field as described above. According to such a configuration, the size of the vibrating body 83 can be set to a desired size in a plane substantially perpendicular to the vibration direction R by appropriately selecting the number of the coils 29 and the magnets 14. .

  FIG. 38 is a cross-sectional view showing a vibration device according to still another embodiment. The power supply line 16 connected to the actuator 5 of the vibration device 245 is gently bent, for example, in a portion surrounded by a broken line in the drawing. By gently bending the power supply line in this way, the possibility of disconnection can be reduced as compared with, for example, a sudden bending of the power supply line indicated by a broken line in FIG. For example, as shown in FIG. 41A, when the minimum bending radius of the power supply line 16 is about three times the thickness d, stress concentrates on the bent portion and disconnection is likely to occur. However, the disconnection is reduced by setting it to 5 times or more as shown in FIG.

  Since the power supply line 16 vibrates, it must withstand the disconnection until the lifetime of the vibration device 245 or the like. A jet generator requires a life of several tens of thousands of hours and has a total frequency of several billion times. Therefore, it is desirable that the feeder line 16 is fixed at a location where it is attached to the coil bobbin 9 side and a location where it is attached to the frame 44 side. Therefore, in the vibration device 245, the terminal block 21 in which the terminal 22 is provided on the frame 44 is fixed, and the power supply line 16 is connected and fixed to the terminal block 21. Thereby, while preventing disconnection, wiring at the time of manufacture of the jet flow generator which mounts the vibration apparatus 245 becomes easy.

  Further, in order to prevent the power supply line 16 from being disconnected, for example, as shown in FIG. In addition, a robot cable or the like in which a thin conductive wire is covered with an insulating film and bundled is also resistant to bending, and is suitable as a power supply line.

  When a feed line as shown in FIG. 40 is used, the thickness d is preferably 0.4 mm or more. In general speakers, those with an amplitude of about 5 mm are so-called woofers. Even in the trial production of the present inventors, when a 0.3 mm tweeter wire was used, its life was extremely short. When the thickness was changed to 0.4 mm, the life was significantly increased. Although 14000 hours passed in the continuous test, it has not been disconnected yet.

  The feed line 16 has a special configuration as described above. Therefore, it is reasonable to use a normal conducting wire different from the feeder line 16 having the above-described configuration for the wiring from the power transmission portion to the vibration device or the wiring from the power transmission portion to the jet flow generating device. For this reason, it is very advantageous if the terminal block 21 is provided. The terminal block 21 may be attached to the frame 44 of the vibration device 245 as shown in FIG. Or you may attach to the housing | casing 131 of the jet flow generator 130 like FIG. 42 etc. which are demonstrated later.

  FIG. 42 is a cross-sectional view showing a jet flow generating device according to still another embodiment. A part of the frame 144 of the vibration device 255 mounted on the jet flow generating device 130 also functions as the casing 131 of the jet flow generating device 130. That is, a part of the housing 131 is notched, and the vibration device 255 is attached to the notch. An air circulation port 144 a is formed on the side surface of the frame 144 near the front surface 131 a of the housing 131. As described above, a part of the housing 131 is configured by the frame 144, whereby the jet flow generating device 130 can be reduced in thickness and size.

  In this case, if the casing 131 and the frame 144 are made of a material having good thermal conductivity, it is effective for heat dissipation of the actuator 5 and the like. Examples of the high thermal conductivity material include metals such as copper and aluminum, or carbon resins.

  Further, the power supply line 16 of the jet flow generating device 130 extends to the side opposite to the side where the actuator 5 is located with respect to the diaphragm 3a. Further, the space on the opposite side of the actuator 5 has a space by the chamber 111b formed by the housing 131, so that wiring is facilitated and the bending radius of the feeder line 16 can be increased as described above. .

  Note that the function of the casing 131 of the jet generating device is also shown in FIG. 42 for the vibration device 25 and the like having the cylindrical frame shown in FIGS. 10, 21, 22, and 23 described above. It can be mounted on a jet flow generator so as to serve as both.

  In the jet flow generator 130, the terminal block 21 is preferably attached to the side surface of the housing 131. If the jet flow generating device 130 is mounted on an electronic device (not shown) if it is not the side surface but the upper surface or the lower surface, there is a space near the upper surface or the lower surface for the convenience of wiring of the lead wire from the power supply portion to the terminal block 21. It must be provided, and there are restrictions on mounting. Moreover, it is contrary to thickness reduction. Therefore, the side surface is better than the upper and lower surfaces. However, of course, depending on the design of the electronic device, there may be no problem even if such a space is provided.

  In the jet flow generating device 130 shown in FIG. 42, the actuator 5 side is not so complicated. However, when it is desired to reduce the thickness of the jet flow generating device, the actuator 5 may be disposed on the side where the side plate 3b of the vibrating body 3 is erected as in the vibration device 265 as shown in FIG. In this case, the structure on the side where the actuator 5 is arranged is complicated, and the feeder 16 is wired to the terminal block 21 avoiding the yoke 8 and the side plate 3b, and the bending radius thereof becomes small. In particular, when the efficiency of the magnetic circuit of the actuator 5 is to be increased with a configuration such as the jet generating device 140 shown in FIG. 43, the magnetic flux density of the voice coil section should be increased. For this purpose, the magnet 14 may be enlarged, but in that case, the space between the yoke 8 and the side plate 3b becomes close, and the space through which the feeder line 16 passes becomes narrow. That is, if the power supply line 16 is on the actuator 5 side, it is disadvantageous for improving the efficiency of the actuator 5.

  Therefore, as shown in FIG. 44, if the feeder line 16 is extended and wired on the side opposite to the side on which the actuator 5 of the diaphragm 3a of the vibrating body 3 is disposed, there is no problem as described above. In this case, the terminal block 21 is also arranged below the diaphragm 3a.

  FIG. 45 is a cross-sectional view showing a jet flow generating device according to still another embodiment. In this jet flow generating device 160, a hole 3 b-1 through which the feeder line 16 passes is provided in the side plate 3 b of the vibrating body 3. The power supply line 16 passes between the two elastic support members 6 and is connected to the terminal block 21. With such a configuration, wiring of the feeder line 16 in the complicated structure as described above can be avoided, and manufacturing is facilitated. A plurality of holes 3b-1 may be provided, or a long hole shape may be used. By doing so, at the time of manufacturing the vibration device 285, can the restriction on the mounting angle direction of the vibrating body 3 (the rotational angle direction of the vibrating body 3 itself in a plane substantially perpendicular to the vibration direction R of the vibrating body 3) be relaxed? Or it can be eliminated. That is, when there is one hole 3 b-1, the vibrating body 3 must be arranged so that the hole 3 b-1 faces the terminal block 21.

  FIG. 46 is a modification of the jet flow generating device 160 shown in FIG. A flow port 44 a different from the flow port 44 a is opened in the frame 44 of the vibration device 295 of the jet flow generating device 170. Due to the circulation port 44b, the air inside the frame 44 escapes through the circulation ports 44a and 44b when the vibrating body 3 vibrates, so that the air flow becomes smoother. This also reduces noise. That is, in order to minimize the air resistance when the airflow is generated inside the frame 44, the larger the opening area of the circulation port formed in the frame 44 is, the better. In the experiments by the present inventors, it has been confirmed that the noise level is reduced by about 3 dB when the distribution port 44b is present compared to the case where the distribution port 44b is not present.

  FIG. 47 is a cross-sectional view showing a jet flow generating device according to still another embodiment. This jet flow generator 180 is characterized in that it does not have the frame of the vibration device as described above. That is, the frame is integrated with the casing 181 of the jet flow generating device 180. With such a configuration, the jet flow generator 180 can be further reduced in thickness and the number of parts can be reduced, and the housing can be easily formed by one-piece molding, which is advantageous for mass production.

  The cross-sectional shape of the feed line 16 as described above can be circular as shown in FIG. 48, but when the vibrating body 3 vibrates, turbulence is generated behind the feed line 16 as shown. There is a risk. However, if it is flat as shown in FIG. 49, the airflow can be controlled smoothly. In the case of FIG. 49, it is necessary to consider the direction of the cross-sectional shape of the feeder line 16 at the time of wiring so that the airflow is generated in the direction as shown in FIG.

  In addition, it is also possible to feed the vibrating body 3 and the elastic support member 6 as a conductive member without using the above-described feeding line.

  FIG. 50 is a cross-sectional view showing a jet flow generating device according to still another embodiment. In this jet flow generating device 190, a transparent viewing window 27 is provided on the lower surface of the casing 181 of the jet flow generating device 180 shown in FIG. The observation window 27 is made of resin or glass. According to such a configuration, a person who manufactures the jet flow generating device 190 can visually check the inside of the housing 231 and can easily determine when it is defective.

  In addition, as shown in FIG. 51, the amplitude, frequency, vibration waveform and the like of the vibrating body 3 can be observed using a laser displacement meter 48 or the like, which is very convenient particularly during debugging. Further, when an antireflection film (not shown) is provided on both sides of the viewing window 27, unnecessary reflection such as an arrow shown by a broken line is reduced, and a measurement error in the laser displacement meter 48 is reduced. For such measurement, it is convenient to attach a member 49 that promotes reflection of light to the vibrator 3. Note that the viewing window 27 may not be provided, and a configuration in which a viewing hole is simply formed in the housing 231 may be employed.

  FIG. 52 is a cross-sectional view showing a jet flow generating device according to still another embodiment. The vibrating body 103 of the jet flow generating device 200 has a cylindrical shape, and the actuator 5 is disposed therein. The upper plate 103a and the lower plate 103b of the vibrating body 103 each have a function of a diaphragm, and a side plate 103c is provided. The actuator 5 is attached to a partition plate 204 that is disposed inside the housing 201 and is fixed to the 201. Specifically, the yokes 8 and 18 incorporating the magnet 14 are fixed to the partition plate 204, and the coil bobbin 9 is fixed to the inner surface of the vibrating body 103. The partition plate 204 is provided with an annular opening 204a through which the side plate 103c of the vibrating body 103 is passed. There is only the space of the chambers 101a and 101b outside the vibrating body 103. The space 101c inside the vibrating body 103 is isolated from the chamber 101a and the chamber 101b. Therefore, the gas in the casing 201 outside the vibrating body 103 can be ejected smoothly and efficiently outside the casing 201 via the nozzles 102a and 102b.

  Moreover, noise can be reduced as a result of smooth airflow. Actually, in the structure shown in FIG. 47, for example, there is a difference between the noise level emitted from the nozzle on the side where the actuator 5 is present and the noise level emitted from the side where the actuator 5 is not present. In the trial production by the present inventors, the peak of the noise spectrum is about 10 dB smaller than the noise side on the side without the actuator. In the jet flow generating device 200 shown in FIG. 52, since the actuators 5 are not provided in the chambers 101a and 101b communicating with the nozzles 102a and 102b, noise is suppressed.

  FIG. 53 is a cross-sectional view showing a jet flow generating device according to still another embodiment. This jet flow generator 210 includes a vibrating body 3 having a side plate 3 b and a vibrating plate 113. The partition plate 214 fixed to the casing 211 is provided with an annular opening 214a. The opening 214a does not necessarily have to be annular, and may be divided into a plurality of openings. The partition plate 214 is provided with the actuator 5 as in the apparatus shown in FIG. The chambers 121a, 121b, 121c are isolated from each other. In the jet flow generator 210, the vibrating plate 3 vibrates in synchronization with the vibrating member 3 due to a change in the pressure of the air in the chamber 121c due to the vibrating member 3 vibrating. As a result, the pressure in the chambers 121a and 121b alternately increases and decreases, and air is alternately ejected through the nozzles 122a and 122b. Also in the present embodiment, the same effect as the jet flow generating apparatus 200 shown in FIG. 52 can be obtained.

  FIG. 54 is a cross-sectional view showing a part of an electronic apparatus according to one embodiment. The electronic device 250 is a PC, for example. In this example, a part of the casing of the jet flow generating device 220 is integrated with the casing 251 of the electronic device 250. Specifically, the casing constituting the lower chamber 221 b of the jet flow generator 220 is integrated with the casing 251. According to such a configuration, the electronic device 250 is made thinner by the thickness of the casing 181 of the jet flow generating device 180 than when the jet flow generating device 180 shown in FIG. 47 is mounted on a similar electronic device. be able to. The jet generating device 220 ejects air toward the heat sink 84 and is exhausted from the vent 251 a opened in the housing 251.

  When the jet flow generating device and the vibration device described above are mounted on an electronic device, the case of the electronic device and the case of the jet flow generation device do not necessarily have to be integrated as shown in FIG. .

  FIG. 55 is a perspective view in which, for example, the jet flow generating device 10 shown in FIG. 1 is partially broken when it is mounted on a laptop PC. Thus, the PC 300 is equipped with the heat sink 84 and the jet flow generator 230 that ejects air toward the heat sink 84.

  FIG. 56 is a perspective view showing a heat sink to which air discharged from each of the jet flow generating devices 10 and the like is applied. The heat sink 97 has a plurality of air circulation holes 96 formed therein. Air from a jet generator (not shown) passes through the circulation hole 96, whereby the heat sink 97 is cooled. FIG. 57 shows a combination of the jet flow generating device 10 and the heat sink 97, for example.

  FIG. 58 is a perspective view showing another embodiment of a combination of a jet flow generating device and a heat sink. In this example, two jet generating apparatuses 10 shown in FIG. 57 are combined, and these send air toward the heat sink 97. The size and the like of the heat sink 97 are determined according to the amount of heat to be radiated, but the size of the jet generating device can also be arbitrarily determined according to the size. Although it is possible to enlarge the jet flow generating device itself, as shown in FIG. 58, it is possible to cope with heat sinks 97 having different sizes (widths) with the same jet flow generating device by arranging two in parallel. . From the state shown in FIG. 58, mechanical vibrations can be attenuated by adding a jet generating device and making the movements of the two diaphragms in opposite phases.

  FIG. 59 is a perspective view showing another embodiment of the heat sink and the jet flow generating device. The casing of the jet flow generating device 320 is rectangular. Thus, unlike the axial flow fan, the jet flow generating device 320 does not have to be confined to a round shape and can be arbitrarily shaped to some extent. This contributes to the effective use of equipment space.

  FIG. 60 is a diagram showing an air flow when the jet flow generating device 180 is mounted on the housing 351 of the electronic device. The casing 351 is provided with an inlet 351a at the top 351c and the bottom 351d. A plurality of exhaust ports 351 b are provided on the back side of the heat sink 97. The introduction port 351a is disposed in the vicinity of the nozzle opening 182 of the jet flow generating device 180. This makes it easy to create a synthetic jet when the jet generator 180 operates, and the amount of air blown to the heat sink 97 can be increased. The bottom portion 351d is provided with a spacer 354 for making it easy to introduce external air from the introduction port 351a with a gap between the bottom portion 351d and the ground surface 233. The spacer 354 may be integrally formed with the same material as the housing 351.

  When the electronic device is a laptop PC, the operator is often located near the front of the PC. Therefore, in that case, it is not desirable for hot air to come forward. Therefore, the exhaust port 351b is preferably provided on the back surface or the side surface. When the jet generating device 180 is operated, air flows in from the inlet 351a to create the above-described synthetic jet, and the synthetic jet formed by the jet generating device 180 passes through the heat sink 97 and is exhausted from the exhaust port 351b. The As shown in FIG. 61, the introduction port 351a of the housing 351 of the electronic device may be provided only on the bottom 351d side.

  FIG. 62 shows a form in which the two jet generators and the heat sink 97 shown in FIG. 58 are mounted on the PC 400. FIG. 63 shows a mode in which the jet flow generating device 320 is mounted on the display device 450 as an electronic device. In this case, the exhaust port is arranged upward. When mounted on a display, exhaust to the rear, upper, or side is desirable. FIG. 64 shows a mode in which the jet flow generating device 330 is mounted on the projector 500 as an electronic device.

  The present invention is not limited to the embodiment described above, and various modifications are possible.

  For example, the jet generating device shown in each of the above drawings or the jet generating device equipped with the vibration device shown in each of the above can also be used as means for supplying fuel in the fuel cell. Specifically, the oxygen (air) intake port of the fuel cell main body and the nozzle of the jet flow generating device may be arranged to face each other. If it does in this way, the air of the jet discharged from the jet generating device will be drawn in as oxygen fuel from the inlet.

  Moreover, it is also possible to combine suitably the characteristic part of at least 2 vibration apparatus among the vibration apparatuses shown by said each embodiment. The same applies to the jet generator.

  FIG. 65 is a cross-sectional view showing a jet flow generating device according to still another embodiment. In addition, in FIG. 65, although the direction of the jet flow generator 350 is shown upside down, there is no element which changes functionally in particular. However, when the jet flow generating device 350 is incorporated in an electronic device, when considering the ease of arrangement of the jet flow generating device 350, the magnetic influence by the actuator 5, and the like, for example, the vertical direction thereof is considered.

  An opening 341b is provided on the front surface 341a of the jet flow generating apparatus 350 according to the present embodiment, and a nozzle body 342 is mounted so as to close the opening 341b. The nozzle body has four stages of flow paths 342a, 342b, 342c, and 342d in the vertical direction (vibration direction of the diaphragm 303), and of course has a plurality of flow paths in the horizontal direction as shown in FIG. Between the flow paths 342b and 342c, as many partition plates 342e as the number of the flow paths 342a arranged in the horizontal direction are provided. When the jet flow generator 350 operates, the wind direction is always reversed in the upper flow paths 342a and 342b and the lower flow paths 342c and 342d. By providing the partition plate 342e, for example, air discharged from the upper flow paths 342a and 342b is less likely to be sucked from the lower flow paths 342c and 342d, and air is efficiently discharged. Although a plurality of partition plates 342e are provided, the present invention is not limited to such a configuration, and the partition plates 342e may be configured by a single plate extending in the horizontal direction. However, since the partition plate 342e is divided into a plurality of parts as shown in FIG. 66, the partition plates 342e can be fitted between the heat radiation fins constituting the heat sink as shown in FIG. Thereby, the jet flow generator 350 and the heat sink can be positioned easily and accurately.

  In addition, since the housing 342 and the nozzle body 342 are configured separately, manufacturing is facilitated and productivity is improved. Of course, each of the jet flow generating devices described in the above embodiments may also include such a separate nozzle body. In addition, the nozzle body 342 has a structure in which the two stages of flow paths 342a and 342b are provided in the upper stage and the two stages of flow paths 342c and 342d are provided in the lower stage. Good.

  The jet flow generator 350 is provided with curved surfaces a, b, and c at various locations on the inner surface of the housing 341. For example, in the case where there are corners or steps in the housing, vortices are likely to be generated at the corners or steps due to the generation of an air flow caused by vibration of the diaphragm 303, which is one of the causes of noise. However, since the curved surfaces a, b, and c are provided on the inner surface of the housing 341 as in the present embodiment, the air flow generated by the vibration of the diaphragm flows smoothly and noise can be reduced. it can.

  In the present embodiment, it is preferable that a curved surface a is provided between the front surface 341a (surface on which the nozzle body 342 is mounted) having at least the opening 341b and the bottom surface 341c of the housing 341. That is, since the curved surface a is provided in the vicinity of the nozzle body 342, air smoothly flows from the inside of the housing 341 to the outside of the housing 341 through each flow path 342 a of the nozzle body 342.

  In this example, the actuator 5 is mounted on the bottom surface 341c, but a curved surface b is also provided so as to connect from the bottom surface 341c to the side peripheral surface of the yoke 8 of the actuator 5. By providing the curved surface b as described above, the air flow becomes smooth, and the curved surface b functions as a boss portion for mounting the yoke 8. That is, the boss part has a curved surface b on the surface thereof. By providing the boss portion in this manner, the positioning of the actuator 5 is facilitated when the jet flow generating device 350 is manufactured.

  In addition, it is preferable that these curved surfaces a, b, and c are continuously provided in a circumferential shape when viewed in a plane parallel to the surface of the diaphragm 303. However, this is not necessarily the case, and the curved surface may be provided discontinuously when viewed in the plane.

  FIG. 66 is a cross-sectional view showing a jet flow generating device according to still another embodiment.

  An annular boss portion 361 d for mounting the yoke 8 of the actuator 5 is provided on the housing 361 of the jet flow generating device 360. As described with reference to FIG. 65, the provision of the boss portion 361d as described above facilitates the positioning of the actuator 5 when the jet flow generating device 360 is manufactured.

In the present embodiment, in particular, in order to make the length (height) h of the casing 361 in the vibration direction of the diaphragm 303 as small as possible, an actuator mounting hole 361e is formed in the casing 361e. It is effective for. That is, in the hole 361e

For example, as shown in FIG. 68, when the thickness g of the housing 461 is thin, it is difficult to position the actuator 5 even if the actuator 5 is mounted at the position of the hole 461e. That is, when the thickness g of the housing 461 is thin (for example, 1 mm), even if the operator attempts to fix the actuator 5 in the hole 461e, the actuator 5 is displaced in the lateral direction and can be fixed. Disappear. When the lower surface 8a of the yoke 8 protrudes below the lower surface 461a of the housing 461 and the actuator 5 is positioned, the positioning is not difficult, but the lower surface 8a of the yoke 8 and the lower surface 461a of the housing 461 are matched. Thus, it is difficult to perform positioning. As shown in FIG. 67, the presence of the boss portion 361d increases the thickness of the portion to which the actuator 5 is attached due to the boss portion 361d. 5 can be suppressed.

  The shape of the boss portion 361d is not limited to an annular shape, and the shape of the boss portion 361d can be appropriately designed in accordance with the shape of the yoke 8. Moreover, the boss | hub part 361d may be provided continuously cyclically | annularly, and may be provided discontinuously.

  FIG. 69 is a cross-sectional view showing a jet flow generating device according to still another embodiment. The elastic support member 376 included in the jet flow generating device 370 is designed so that the thickness is partially different.

  For example, as shown in FIG. 70, when the diaphragm 303 is vibrated, the amplitude on the rear side opposite to the amplitude on the front side where the nozzle body 342 is provided is larger, and the diaphragm 303 is desired. In some cases, the vibration does not vibrate in a straight line, and vibration flickering occurs. In such a state, the diaphragm 303 is in contact with the inner surface of the housing 461 on the larger amplitude side, and a desired amplitude cannot be obtained. Further, this fluttering may occur only in a certain portion without randomly appearing in all directions, although it depends on the method and structure of the jet flow generating device 470. For example, as shown in FIG. 70, the amplitude only at the rear is large.

  In order to solve such a problem, in FIG. 69, the elastic support member 376 is designed so that the elastic force is partially different. For example, when a flutter as shown in FIG. 70 occurs, the thickness e of the rear portion 376b of the elastic support member 376 is designed to be thicker than the thickness f of the front portion 376a so that the flutter is absorbed. Good.

  FIG. 70 shows an example in which the amplitude of the diaphragm 303 increases in the rear, but the flapping method varies depending on the individual difference of the jet flow generating device 470. Therefore, the present embodiment is not limited to the form in which the rear wall thickness is increased as shown in FIG. 69, but “the thickness is appropriately designed so as to absorb the flutter”. In addition, although one elastic support member 376 has two values of thickness (e and f), there may be three or more.

It is a perspective view which shows the jet flow generator which concerns on one embodiment of this invention. It is sectional drawing of the jet flow generator shown in FIG. It is a perspective view which shows the vibrating body which concerns on one embodiment of this invention. It is an expanded sectional view showing actuator 5 concerning one embodiment of the present invention. It is a figure which shows the mode of the magnetic field generate | occur | produced by the actuator shown in FIG. It is a perspective view which shows the vibrating body which concerns on other embodiment. It is a perspective view which shows the vibrating body which concerns on another embodiment. It is a perspective view which shows the vibrating body which concerns on another embodiment. It is a top view which shows the diaphragm which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on other embodiment. It is a perspective view of the vibration apparatus shown in FIG. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is the sectional view on the AA line in FIG. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is the top view which looked at the vibration apparatus etc. shown in FIG. 2 from the opening end side (lower part side) of the flame | frame. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. The state of the magnetic force lines generated by the magnet and yoke of the actuator shown in FIG. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the jet flow generator provided with the vibration apparatus which concerns on another embodiment. It is sectional drawing which shows the modification of the jet flow generator shown in FIG. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. FIG. 35 is a sectional view taken along line BB in FIG. 34. It is sectional drawing which shows the vibration apparatus which concerns on another embodiment. It is a top view of the vibrating body shown in FIG. It is sectional drawing which shows the vibration apparatus (vibration apparatus by which the bent electric power feeding line was wired) which concerns on another embodiment. It is sectional drawing which shows the vibration apparatus by which the feeder wire with a small bending radius was wired. It is an enlarged view which shows the feed line in which the twist was applied. It is an enlarged view which shows the bending part of a feeder. It is sectional drawing which shows the jet flow generator which concerns on other embodiment. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is a figure which shows the airflow in case the cross section of a feeder is circular. It is a figure which shows the airflow in case the cross section of a feeder line is flat shape. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is sectional drawing which shows a part of electronic device which concerns on one embodiment of this invention. It is the perspective view which fractured | ruptured a part when the jet flow generator shown in FIG. 1 was mounted in laptop type | mold PC. It is a perspective view which shows the heat sink to which the air from a jet flow generator is applied. It is a perspective view which shows the combination of a jet flow generator and a heat sink. It is a perspective view which shows the other form of the combination of a jet flow generator and a heat sink. It is a perspective view which shows another form of a heat sink and a jet flow generator. It is a figure which shows an airflow when the jet flow generator is mounted in the housing | casing of an electronic device. It is a figure which shows the other form of an airflow. FIG. 59 is a partially broken perspective view of the PC showing a form in which the double jet generating device and the heat sink shown in FIG. 58 are mounted on the PC. It is a partially broken perspective view of the said display apparatus which shows the form with which the jet flow generator was mounted in the display apparatus. It is a partially broken perspective view of the projector showing a form in which the jet flow generating device is mounted on the projector. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is a perspective view which shows a nozzle body. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is a figure which shows the example where positioning of an actuator becomes difficult when the thickness of a housing | casing is thin. It is sectional drawing which shows the jet flow generator which concerns on another embodiment. It is a figure which shows the example which flutters in the vibration of a diaphragm.

Explanation of symbols

R ... Vibration direction 1, 131 ... Housing 3, 13 ... Vibrating body 3a ... Vibration plate 3b, 13b ... Side plate 3a-1 ... Front surface 3a-2 ... Back surface 3b-1 ... Hole 4, 44 ... Frame 4a ... Distribution port 5 191: Actuator 6, 56 ... Elastic support member 8, 18 ... Yoke 9, 37 ... Coil bobbin 10, 130 ... Jet generator 12a, 12b ... Opening 12a, 12b ... Nozzle 12b ... Nozzle 13 ... Vibrating body 14 ... Magnet 15, DESCRIPTION OF SYMBOLS 25 ... Vibrating device 16 ... Feed line 17 ... Coil 17 ... Coil bobbin 21 ... Terminal block 23e ... Rib 24 ... Frame 24a ... Distribution port 52 ... Gap 53c, 143c ... Projection part 84, 97 ... Heat sink 250, 300 ... Electronic device

Claims (71)

A vibration device that vibrates the gas to discharge the gas contained in the housing as a pulsating flow through the opening of the housing,
Frame,
A vibrating body having a diaphragm having a surface substantially perpendicular to the vibration direction, and supported by the frame so as to vibrate;
And a driving unit that drives the vibrating body. The vibration device according to claim 1,
The vibrator includes a side plate provided on the diaphragm. The vibration device according to claim 1,
The vibration device has a hole in the side plate. The vibration device according to claim 1,
The vibration device includes a rib member connected between the vibration plate and the side plate. The vibration device according to claim 4,
The vibrator has a hole in the rib member. The vibration device according to claim 1,
The vibrator is made of resin, paper, or metal. The vibration device according to claim 1,
The vibration device according to claim 1, wherein the surface is circular, elliptical, polygonal, or square. The vibration device according to claim 2,
The side plate is erected on one side of the vibration direction of the diaphragm,
The drive unit includes an actuator arranged on the one side for vibrating the vibrating body. The vibration device according to claim 1,
The diaphragm has a cone shape in which the diameter gradually increases toward one side of the vibration direction of the diaphragm,
The drive unit includes an actuator arranged on the one side for vibrating the vibrating body. The vibration device according to claim 9,
The vibration device includes a side plate that is erected toward a side opposite to the one side. The vibration device according to claim 2,
The said frame supports the said side plate so that sliding is possible, The vibration apparatus characterized by the above-mentioned. The vibration device according to claim 11,
The said frame supports the said side plate so that sliding is possible by the clearance gap provided between the said frame and the side plate, or the lubrication agent. The vibration device according to claim 2,
The vibrator is
A peripheral portion of the diaphragm supported slidably by the frame;
And a projecting portion that is slidably supported by the frame and projects from the side plate. The vibration device according to claim 2,
A first elastic support member that is disposed between the frame and the side plate so as not to flow the gas from one side of the vibration direction to the opposite side of the vibration plate, and supports the vibration body;
A second elastic support member disposed between the frame and the side plate so as to be substantially aligned with the first elastic support member in the vibration direction, and further supporting the vibrating body. Vibration device. The vibration device according to claim 14,
The side plate is
A first end to which the first elastic support member is connected;
A vibration device comprising: the first end portion and the second end portion provided on the opposite side in the vibration direction and connected to the second elastic support member. The vibration device according to claim 14,
The second elastic support member is a plurality of leaf springs or a plurality of wires. The vibration device according to claim 14,
The vibration device characterized in that the first and second elastic support members are made of the same material. The vibration device according to claim 1,
A first bellows-like elastic support member disposed between the frame and the vibrating body so as to prevent the gas from flowing from one side of the vibrating plate to the opposite side of the vibrating plate and supporting the vibrating body. The vibration device further comprising: The vibration device according to claim 18,
The vibrator is
A side plate provided on the diaphragm and connected to the first elastic support member;
The vibration device is
Between the frame and the side plate so as to be aligned with the first elastic support member in the vibration direction and to be substantially symmetrical with the first elastic support member in the vibration direction of the vibrating body. A vibration device further comprising a bellows-like second elastic support member disposed and supporting the vibrating body. The vibration device according to claim 19,
The diaphragm has a cone shape with a diameter increasing toward one side of the vibration direction of the diaphragm,
The drive unit includes an actuator arranged on the one side for vibrating the vibrating body. The vibration device according to claim 18,
The first elastic support member is
One trough disposed on the vibrating body side;
It is composed of one mountain portion arranged on the frame side,
The drive unit is
An actuator for vibrating the vibrating body;
And a power supply line connected to the actuator so as to pass through the air in the vicinity of the first elastic support member. The vibration device according to claim 18,
The area of the surface of the diaphragm is 70 percent or less of the area of a portion in a plane substantially parallel to the surface of the diaphragm and surrounded by the portion where the first elastic support member is in contact with the frame. The vibration device characterized by being. The vibration device according to claim 1,
The vibrator is
A vibration device comprising an elastic support portion that is made of the same material as the vibration plate and supports the vibration plate by being attached to the frame around the vibration plate. The vibration device according to claim 1,
The drive unit is
Magnets,
A bobbin that has a flow port for circulating the gas, is attached to the vibrating body, and is provided so as to surround the magnet;
And a coil wound around the bobbin. The vibration device according to claim 1,
The diaphragm has a hole penetrating in the vibration direction at substantially the center thereof,
The drive unit is
A coil mounted in the hole;
A flat yoke disposed in the vicinity of the hole so as to be surrounded by the coil;
And at least two magnets provided so as to sandwich the yoke. The vibration device according to claim 1,
The drive unit is
A coil wound around the periphery of the vibrating body;
A flat yoke having a hole provided so as to penetrate in the vibration direction and surround the coil;
A vibration device, comprising: at least two magnets provided outside the frame and sandwiching the yoke. The vibration device according to claim 26, wherein
The vibrator has a side plate provided on the diaphragm,
The vibration device is
A first elastic support member that is disposed between the frame and the side plate so as not to flow the gas from one side of the vibration direction to the opposite side of the vibration plate, and supports the vibration body;
A second elastic support member that is symmetrical to the first elastic support member in the vibration direction of the diaphragm, wherein the yoke is disposed between the first and second elastic support members. A vibration device, further comprising: a second elastic support member disposed between the frame and the side plate and supporting the vibrating body. The vibration device according to claim 1,
The drive unit is
A plurality of planar coils mounted on the diaphragm;
A vibration device comprising: a plurality of magnets mounted on the frame so as to face each planar coil. The vibration device according to claim 1,
The drive unit includes an actuator having a magnet having a residual magnetic flux density of 0.3 to 3.0 T. The vibration device according to claim 28, wherein
The vibrator is a neodymium magnet. The vibration device according to claim 1,
The drive unit is
A terminal block mounted on the frame;
An actuator having a magnet and a coil;
A vibration device comprising: a power supply line connected between the terminal block and the coil. The vibration device according to claim 31, wherein
The vibration device according to claim 1, wherein a minimum bending radius of the power supply line is approximately five times a thickness of the power supply line. The vibration device according to claim 31, wherein
The vibrating device according to claim 1, wherein the power supply line is twisted. The vibration device according to claim 31, wherein
The actuator is disposed on one side of the vibration direction of the diaphragm,
The vibration device characterized in that the power supply line extends to the opposite side of the one side of the diaphragm. A vibration device according to claim 34, wherein
The vibrating device includes a side plate erected on the one side. The vibration device according to claim 31, wherein
The vibrator has a side plate having a through hole,
The vibration device is
A first elastic support member that is disposed between the frame and the side plate so as not to flow the gas from one side of the vibration direction to the opposite side of the vibration plate, and supports the vibration body;
A second elastic support member disposed between the frame and the side plate so as to be substantially aligned with the first elastic support member in the vibration direction and further supporting the vibrating body;
The power feeding line is arranged to be inserted through the through hole and to pass between the first and second elastic support members. The vibration device according to claim 31, wherein
The thickness of the said feeder is 0.4 mm or more, The vibration apparatus characterized by the above-mentioned. The vibration device according to claim 31, wherein
A vibration device characterized in that a cross section perpendicular to the longitudinal direction of the feeder line is flat. The vibration device according to claim 1,
The drive unit is
A terminal block mounted on the frame;
An actuator having a magnet and a coil,
The vibrator has a side plate provided on the diaphragm,
The vibration device is
The vibration device further comprising an elastic support member made of a conductive material capable of supplying power to the actuator, disposed between the frame and the side plate, and supporting the vibrating body. The vibration device according to claim 1,
The drive unit is
An actuator having a magnet and a coil;
And a power supply line connected to the coil and having a minimum bending radius that is approximately five times the thickness of the power supply line. The vibration device according to claim 1,
The frame has a circulation port for circulating the gas. The vibration device according to claim 2,
The vibrating body has a cylindrical shape having first and second vibrating plates connected to both ends of the vibration direction of the side plate,
The drive unit includes an actuator for vibrating the vibrating body in the cylindrical vibrating body. The vibration device according to claim 1,
The drive unit has an actuator for vibrating the vibrating body,
The vibrator is
A first diaphragm connected to the actuator;
The first diaphragm is arranged substantially in the vibration direction and is synchronized with the first diaphragm by a change in pressure of the gas generated when the first diaphragm is vibrated by driving the actuator. And a second diaphragm that vibrates. The vibration device according to claim 1,
The drive unit includes an actuator having a magnet and a coil,
At least a part of the frame is made of a magnetic material for constituting a magnetic circuit of the actuator. Frame,
A vibrating body having a diaphragm having a surface substantially perpendicular to the vibration direction, and supported by the frame so as to vibrate;
A housing having an opening, supporting the frame and containing gas therein;
A jet flow generating device comprising: a drive unit configured to drive the vibrating body and apply vibration to the gas to discharge the gas as a pulsating flow through the opening. A jet generator according to claim 45,
The jet generator according to claim 1, wherein the vibrating body includes a side plate provided on the vibrating plate. A jet generator according to claim 45,
A part of said housing | casing is comprised with the said flame | frame, The jet flow generator characterized by the above-mentioned. The jet generator according to claim 47,
The jet generator according to claim 1, wherein the frame is made of metal. A jet generator according to claim 45,
The casing is made of resin, rubber, metal, magnetic material or ceramics. The vibration device according to claim 45, wherein
The jet generator according to claim 1, wherein the casing has a surface substantially parallel to the surface of the diaphragm and similar to the surface. A jet generator according to claim 45,
The drive unit is
A terminal block mounted on the housing;
An actuator having a magnet and a coil;
A jet flow generating device comprising: a power supply line connected between the terminal block and the coil. A jet generator according to claim 45,
The jet generator according to claim 1, wherein the frame has a flow port for flowing the gas facing the opening. A jet generator according to claim 45,
The casing has at least two openings, and has at least two chambers provided therein so as to communicate with the openings on one side and the opposite side of the vibration direction of the diaphragm. A jet generator characterized by the above. A vibrator having a diaphragm having a surface substantially perpendicular to the vibration direction;
A housing having an opening, supporting the vibrating body so as to vibrate and containing gas inside;
A jet flow generating device comprising: a drive unit configured to drive the vibrating body and apply vibration to the gas to discharge the gas as a pulsating flow through the opening. A jet generator according to claim 54,
The jet generator according to claim 1, wherein the vibrating body includes a side plate provided on the vibrating plate. A jet generator according to claim 54,
The drive unit includes an actuator having a magnet and a coil,
At least a part of the casing is made of a magnetic material for constituting a magnetic circuit of the actuator. A jet generator according to claim 54,
The housing is
A first inner surface;
A second inner surface;
A jet flow generating device comprising: a curved surface connecting the first inner surface and the second inner surface. The jet generating device according to claim 57, wherein
The first inner surface is a surface parallel to the surface of the vibrating body;
The jet flow generating device, wherein the second inner surface is a surface having the opening. The jet generating device according to claim 57, wherein
The drive unit has an actuator for vibrating the vibrating body,
The housing is
A boss portion to which the actuator is mounted;
And a curved surface provided on a surface of the boss portion. A jet generator according to claim 54,
The drive unit has an actuator for vibrating the vibrating body,
The jet generator according to claim 1, wherein the casing has a boss portion to which the actuator is mounted. A jet generator according to claim 54,
A jet flow generating apparatus, further comprising an elastic support member that is partially different in elastic force and is attached to the housing and supports the vibrating body. A heating element;
A frame, a diaphragm having a surface substantially perpendicular to a vibration direction, a vibration body supported by the frame so as to be vibrated; an opening; and a gas that is contained inside and supports the frame. A jet generation having a housing of 1 and a drive unit for driving the vibrating body and applying vibration to the gas to discharge the gas as a pulsating flow toward the heating element through the opening Equipment,
An electronic apparatus comprising: the heating element and a second housing capable of holding the jet flow generating device. An electronic device according to claim 62, wherein
The electronic device according to claim 1, wherein the vibrating body includes a side plate provided on the vibrating plate. 59. The electronic device according to claim 58, wherein
A part of said 2nd housing | casing is comprised by a part of said 1st housing | casing, The electronic device characterized by the above-mentioned. An electronic device according to claim 62, wherein
The second housing has an introduction port for introducing an external gas when the gas is discharged through the opening. An electronic device according to claim 65,
The second housing is
An electronic apparatus comprising: a bottom portion on which the first housing is placed and the introduction port is disposed in the vicinity of the opening. An electronic device according to claim 66,
An electronic device further comprising a spacer provided outside the second housing and on the bottom. An electronic device according to claim 65,
The second housing is
The heat generating body is disposed on the opposite side of the first casing where the opening is disposed, and the gas synthesized from the gas introduced from the introduction port and discharged through the opening is converted into the heat generation element. An electronic device having a discharge port for discharging through a body. An electronic device according to claim 62, wherein
An electronic apparatus comprising a plurality of the jet generating devices. 70. The electronic device according to claim 69, wherein
2. The electronic apparatus according to claim 1, wherein the jet flow generating devices are arranged in parallel in a plane substantially perpendicular to the vibration direction so that the vibration directions of the vibration plates are substantially aligned. A heating element;
A vibrating body having a diaphragm having a surface substantially perpendicular to a vibration direction, a first housing having an opening, supporting the vibrating body so as to be able to vibrate, and containing gas therein; and A jet generating device having a drive unit for driving and applying vibration to the gas to discharge the gas as a pulsating flow toward the heating element through the opening;
An electronic apparatus comprising: a second housing capable of holding the heating element and the jet flow generating device.

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