JP2008307086A - Ultrasonic diagnostic system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic diagnostic system capable of downsizing a board housing part to which a board mounting heat generating elements that need to be cooled down are attached. <P>SOLUTION: The ultrasonic diagnostic system is provided with: an ultrasonic probe 1 for sending and receiving ultrasonic waves to and from an object P; an image pickup part 2 having a board 27 for incorporating an electronic element which generates a signal for driving the ultrasonic probe 1, performs processing of a received signal from the ultrasonic probe 1, and generates image data; a display part 7 for displaying image data generated by the image pickup part 2; heat absorption plates 4a, 4b, 4c, and 4d which are placed near the board 27 and absorb heat from the electronic element; and a reciprocal flow generation plate 51 having one ends of the respective heat absorption plates fixed to one surfaces. A heat transmission flow body 42 is stored in first and second flow paths linked to each other which are formed in the heat absorption plates and the reciprocal flow generation plate, a vibration body 52 placed in the second flow path and a vibration mechanism 53 for operating a magnetic field to the vibration body 52 and has it reciprocal vibration by prescribed frequencies are provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an ultrasonic diagnostic apparatus, and more particularly to an ultrasonic diagnostic apparatus having a mechanism for cooling a substrate incorporated in the apparatus.

  An ultrasonic diagnostic apparatus emits ultrasonic waves to a subject, generates image data of the subject tissue from a reception signal of a reflected wave caused by a difference in acoustic impedance of the subject tissue, and displays the image data on a monitor. is there. Compared to devices such as an X-ray diagnostic device and an X-ray CT device, this diagnostic method using an ultrasonic diagnostic device can obtain real-time image data with a simple operation by simply bringing an ultrasonic probe into contact with the body surface and is safe. Therefore, it is widely used for diagnosis of the heart, blood vessels, abdomen, urinary organs, etc. In addition, it is smaller and easier to carry than devices such as an X-ray diagnostic device and an X-ray CT device, so it is used for diagnosis at the bedside and in many laboratories.

  By the way, in the ultrasonic diagnostic apparatus, a large number of substrates for transmitting / receiving signals to / from the ultrasonic probe and generating image data based on signals received from the ultrasonic probe are centrally stored in the substrate storage unit. Occupies many parts inside the device. Recently, an ultrasonic probe compatible with three-dimensional scanning capable of three-dimensionally scanning ultrasonic waves has been developed, and electronic elements are mounted at a higher density on such a transmission / reception substrate compatible with three-dimensional scanning.

And in order to prevent the deterioration of the function of the electronic element itself that is easily affected by temperature due to the heat generated by the electronic element incorporated in the substrate, a method of providing a heat radiating fan in the substrate housing part to release the heat from the substrate to cool outside There is. In addition, in an electronic element such as a CPU that generates a large amount of heat, there is a method of cooling the electronic element by attaching a heat sink or a small radiating fan. Furthermore, an electronic element having a large calorific value is provided with an endothermic part having a flow path for the coolant, and the coolant is circulated through a flexible tube connecting the endothermic part and the heat dissipating part having the flow path for the coolant. A method for cooling the element is known (for example, see Reference 1).
JP 2003-60372 A

  However, there is a problem in that the internal heat cannot be sufficiently released only by providing a heat radiating fan in a substrate storage portion in which a substrate on which a large number of electronic elements are mounted is stored. In addition, if there are a plurality of heat generating elements on a substrate on which electronic elements are mounted at high density, it is difficult to provide a space for attaching a heat sink or a heat radiating fan to each heat generating element.

  Furthermore, if a heat sink or a heat radiating fan is attached to each heat generating element of many substrates, each substrate requires a thickness of several tens of millimeters, so that the substrate storage portion becomes larger. There is a problem that handling of the apparatus becomes inconvenient.

  Furthermore, if it is going to provide a heat absorption part in each heat generating element of many board | substrates, the flexible tube connected to each heat absorption part becomes obstructive, and it becomes difficult to attach or detach each board | substrate to a board | substrate storage part. If each substrate is easily attached and detached, there is a problem that a space for accommodating the flexible tube is required and the substrate accommodating portion becomes large.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide an ultrasonic diagnostic apparatus capable of downsizing a substrate housing portion to which a substrate mounted with a heating element that needs to be cooled is attached. And

  In order to solve the above problems, an ultrasonic diagnostic apparatus of the present invention includes an ultrasonic probe that transmits and receives ultrasonic waves to and from a subject, generation of an ultrasonic drive signal to the ultrasonic probe, and the ultrasonic wave An imaging unit having a substrate in which an electronic element for generating image data by performing processing of an ultrasonic reception signal from the probe, a display unit for displaying image data generated by the imaging unit, and A heat absorption plate that is disposed in the vicinity of the substrate and absorbs heat from the electronic element, and a reciprocating flow generating portion that includes a reciprocating flow generating plate in which one end of the heat absorbing plate is fixed to one surface. A heat transfer fluid is accommodated in the first and second flow paths formed in the plate and in the reciprocating flow generating plate, and a magnetic body disposed in the second flow path and the magnetic body Apply a magnetic field to the Characterized in that a flow generating means comprising vibrating mechanism for reciprocal vibration wavenumber.

  According to the present invention, by cooling a substrate that generates a large amount of heat using a cooling mechanism that can be set to a high effective thermal conductivity, the heat absorption part that absorbs the heat of the substrate can be made thin, and the substrate can be stored. The part can be reduced in size.

  Examples of the present invention will be described below.

  An embodiment of an ultrasonic diagnostic apparatus according to the present invention will be described with reference to FIGS. FIG. 1 is a block diagram illustrating a configuration of an ultrasonic diagnostic apparatus according to an embodiment. This ultrasonic diagnostic apparatus 10 includes an ultrasonic probe 1 that transmits / receives ultrasonic waves to / from a subject P, and a reception obtained by transmitting an ultrasonic drive signal and receiving a reflected signal to the ultrasonic probe 1. And an imaging unit 2 having a substrate that processes signals and generates image data.

  The ultrasonic diagnostic apparatus 10 includes a cooling unit 3 that cools a substrate such as the imaging unit 2, a display unit 7 that displays image data generated in the imaging unit 2, and an operation unit that inputs various command signals and the like. 8 and a system control unit 9 having a CPU, a storage circuit, and the like for controlling the units such as the imaging unit 2, the cooling unit 3, and the display unit 7 in an integrated manner.

  The ultrasonic probe 1 performs ultrasonic wave transmission / reception by bringing its tip surface into contact with the body surface of the subject P, and has, for example, a plurality of (N) piezoelectric vibrators arranged one-dimensionally. ing. This piezoelectric vibrator is an electroacoustic transducer, which converts an electric pulse (ultrasonic drive signal) into an ultrasonic pulse (transmitted ultrasonic wave) at the time of transmission, and an ultrasonic reflected wave (from the subject P at reception) ( It has a function of converting received ultrasonic waves into electrical signals (ultrasound received signals).

  The imaging unit 2 transmits / receives an ultrasonic drive signal and a reflected signal to / from the ultrasonic probe 1 and image data that generates image data by processing the reception signal obtained by the transmitter / receiver 21. And a generation unit 24.

  The transmission / reception unit 21 generates ultrasonic drive signals for generating transmission ultrasonic waves from the ultrasonic probe 1, and multi-channel (N-channel) ultrasonic waves obtained from the piezoelectric vibrator of the ultrasonic probe 1. And a receiving unit 23 that performs phasing addition on the received signal.

  The transmission unit 22 includes a rate pulse generator, a transmission delay circuit, a pulser, and the like (not shown). Then, a rate pulse that determines the repetition period (Tr) of the ultrasonic pulse radiated to the subject P is generated, and in the transmission, a delay time for focusing and a predetermined scanning direction for focusing the ultrasonic wave to a predetermined depth. After applying the deflection delay time for transmitting the ultrasonic wave to the rate pulse, N piezoelectric vibrators built in the ultrasonic probe 1 are driven to transmit the transmission ultrasonic wave to the subject P. An ultrasonic drive pulse for radiating is generated and output to the ultrasonic probe 1.

  The receiving unit 23 includes an N-channel preamplifier, a reception delay circuit, an adder, and the like (not shown). Then, a minute ultrasonic reception signal output from the ultrasonic probe 1 is amplified to secure a sufficient S / N, and the reception ultrasonic wave from a predetermined depth is focused on the ultrasonic reception signal. After giving a focusing delay time for obtaining a narrow reception beam width and a deflection delay time for setting the reception directivity of ultrasonic waves on a two-dimensional scanning plane, N-channel ultrasonic waves from the piezoelectric vibrator The received signals are phased and added together and output to the image data generation unit 24 as one.

  The image data generation unit 24 performs a signal processing for generating B-mode image data on the phase-added signal output from the reception unit 23, and the above-described signals. And a Doppler image data generation unit 26 that performs signal processing for generating Doppler image data, and outputs the generated image data such as B-mode image data and Doppler image data to the display unit 7.

  The B-mode image data generation unit 25 includes a detector, a logarithmic converter, an A / D converter, etc. (not shown). Then, after envelope detection is performed on the phase-added signal output from the receiving unit 23, logarithmic conversion is performed. Then, the logarithmically converted signal is converted into a digital signal to generate B-mode image data and output to the display unit 7.

  The Doppler image data generation unit 26 includes a Doppler shift detector that detects a Doppler shift frequency (not shown), a calculation unit that processes a signal from the Doppler shift detection unit, and generates Doppler image data. The Doppler shift detection unit includes an oscillator, a phase shifter, a mixer, a low-pass filter, an A / D converter, and the like (not shown). The arithmetic unit includes an MTI filter, an autocorrelator, an arithmetic circuit, and the like (not shown).

  And after detecting the Doppler shift frequency with respect to the signal by which the phasing addition was output from the receiving part 23 and converting into a digital signal, only blood-flow information is extracted and self-extraction with respect to the extracted Doppler signal. Perform correlation processing. Then, based on the autocorrelation processing result, an average blood flow velocity value, a variance value, and the like are calculated, color Doppler image data is generated, and output to the display unit 7.

  The cooling unit 3 is disposed in a substrate storage unit to be described later, and absorbs heat from a substrate in which various circuits of the imaging unit 2 and CPUs and storage circuits of the system control unit 9 are incorporated at high density. A heat transfer fluid 42 for transferring heat from the heat absorbing portion 4, a reciprocating flow generating portion 5 for setting the apparent heat conductivity (effective heat conductivity) of the heat transfer fluid 42, and heat transfer And a heat dissipating part 6 for releasing the heat from the heat absorbing part 4 transmitted through the fluid 42 into the atmosphere. Then, the cooling operation is performed according to an instruction from the system control unit 9 based on the power supply operation of the operation unit 8 for supplying power to the ultrasonic diagnostic apparatus 10.

  Although details will be described later with reference to FIGS. 3 to 6, the heat absorption unit 4 includes heat absorption plates 4 a, 4 b, 4 c, and 4 d that absorb heat from the imaging unit 2 and the system control unit 9, and each heat absorption plate 4 a. , 4b, 4c, and 4d are formed hollow and the heat transfer fluid 42 is accommodated in the hollow portion, and is made of a metal material such as aluminum or copper having high thermal conductivity.

  In each of the heat absorbing plates 4a, 4b, 4c, 4d, first flow paths are formed so that the heat transfer fluid 42 can flow. The heat from the substrate of the imaging unit 2 and the system control unit 9 is absorbed from the outer wall (heat absorption surface) of each of the heat absorbing plates 4a, 4b, 4c, and 4d, transmitted to the heat transfer fluid 42, and each of the heat absorbing plates 4a. , 4b, 4c, and 4d are transmitted to the heat radiating section 6 including the heat radiating fan of the reciprocating flow generating section 5 and the like. The number of heat absorbing plates is not limited to the heat absorbing plates 4a, 4b, 4c, and 4d, and is provided according to the number of substrates that generate a large amount of heat.

  The above-described heat transfer fluid 42 is sealed so as to communicate with the first flow path in each of the heat absorbing plates 4a, 4b, 4c, 4d and the reciprocating flow generating unit 5, and each of the heat absorbing plates 4a, 4b, 4c, The heat transferred from the heat absorbing surface 4d is transferred to the heat radiating portion 6.

  The reciprocating flow generating unit 5 includes a reciprocating flow generating plate having a second flow path therein so that the heat transfer fluid 42 can flow through the first flow paths in the heat absorbing plates 4a, 4b, 4c, 4d. 51, a vibrating body 52 disposed in the second flow path, a vibrating mechanism 53 that reciprocally vibrates the vibrating body 52 in the flow direction of the second flow path, and a vibrating body 52 controlled by the vibrating mechanism 53. And a control unit 54 that sets the effective heat conductivity by reciprocating the heat transfer fluid 42 at a predetermined frequency by reciprocating vibration.

  The second flow path in the reciprocating flow generating plate 51 is connected to the first flow paths in the heat absorbing plates 4 a, 4 b, 4 c, 4 d through a plurality of entrances 41 provided in the reciprocating flow generating plate 51. ing.

  The display unit 7 includes a conversion circuit, a monitor, and the like. The B-mode image data and the Doppler image data output from the B-mode image data generation unit 25 and the Doppler image data generation unit 26 of the imaging unit 2 are stored in an internal conversion circuit. It is converted into a video signal by D / A conversion and TV format conversion and displayed.

  The operation unit 8 includes an input device such as various switches, a keyboard, a trackball, and a mouse and a touch command screen on the operation panel. The operation unit 8 inputs subject information such as an ID and name of the subject P, and an image data generation mode (B Operation inputs such as an operation for setting imaging conditions such as mode image data and color Doppler image data, and an inspection start and inspection end operation are performed using the input device and the touch command screen.

  The system control unit 9 includes a CPU and a storage circuit (not shown), and various input information supplied from the operation unit 8 is stored in the storage circuit. The CPU controls each unit such as the imaging unit 2, the cooling unit 3, and the display unit 7 and controls the entire system based on these pieces of information.

Next, details of the configuration of the cooling unit 3 will be described with reference to FIGS. 2 to 6.
FIG. 2 is a diagram for explaining a place where the substrate storage unit is arranged. The substrate storage unit 31 is disposed in the ultrasonic diagnostic apparatus 10 and occupies many parts inside the apparatus. The substrate 27 accommodated in the substrate accommodating portion 31 can be detached from the substrate accommodating portion 31 by removing the rear cover 10a on the rear side of the ultrasonic diagnostic apparatus 10.

  FIG. 3A is a diagram of the substrate storage unit 31 as viewed from above. FIG. 3B is a view of the reciprocating flow generating plate 51 and the heat absorbing unit 4 of the reciprocating flow generating unit 5 in the cooling unit 3 and the substrate 27 stored in the substrate storing unit 31 as viewed obliquely from above. .

  The board storage unit 31 shown in FIG. 3A includes a connector 32 that electrically connects the boards 27 (27a, 27b, 27c, 27d, and 27e) of the imaging unit 2 and the system control unit 9, and the connector 32. , Each substrate 27, and a frame 33 that holds the reciprocating flow generating plate 51. The cooling unit 3 is disposed in the substrate storage unit 31.

  The reciprocating flow generating plate 51 shown in FIG. 3B is formed in a flat plate shape containing a heat transfer fluid in a hollow formed inside, and both surfaces of the flat plate constitute a heat absorbing surface that absorbs heat. . And it arrange | positions at the bottom part of the board | substrate storage part 31. FIG. In addition, you may make it arrange | position to the upper part of the board | substrate storage part 31. FIG.

  Each of the heat absorbing plates 4a, 4b, 4c, 4d of the heat absorbing unit 4 is a flat plate having a shape similar to, for example, each of the substrates 27 of the imaging unit 2, and absorbs heat from the substrate 27 on both surfaces (right side and left side) of the flat plate. Has an endothermic surface. The endothermic plates 4a, 4b, 4c, and 4d are disposed in parallel to the reciprocating flow generating plate 51 of the reciprocating flow generating unit 5 so as to be spaced apart from each other and the end surfaces of the endothermic plates 4a, 4b, 4c, and 4d are reciprocatingly flowed. The heat generating surface of the generating plate 51 is joined.

  Then, by moving each board 27 in the same arrow L1 direction as shown in FIG. 2 shown in FIG. 3B and inserting the board 27 into the connector 32 of the board housing part 31, each of the heat absorbing plates 4a, 4b, 4c, 4d, for example, In the vicinity of the right heat-absorbing surface, for example, the substrates 27a, 27b, 27c, and 27d having electronic elements with a large amount of heat generation are arranged on the left surface, respectively.

  FIG. 4A is a view showing a cross section of the endothermic surface of the reciprocating flow generating plate 51, and FIG. 4B is attached on the AA line of the reciprocating flow generating plate 51 of FIG. 4A. It is arrow sectional drawing which showed the attachment state of the heat sink plate 4a.

  In the hollow portion of the reciprocating flow generating plate 51 in FIG. 4 (a), heat transfer meandering at each end portion by alternately cutting out the right end portion and the left end portion of a plurality of partition plates partitioned in parallel at equal intervals. A second flow path for the fluid 42 is formed. A vibrating body 52 described in detail in FIG. 5 is arranged in the flow direction of the second flow path, that is, in the directions of the arrows L2 and L3 shown in FIG. Has been.

  In order to communicate with the second flow path in the reciprocating flow generation plate 51 and the first flow paths in the heat absorption plates 4a, 4b, 4c, and 4d on one surface of the heat absorption surface of the reciprocating flow generation plate 51, respectively. An entrance 41 (41ba, 41ca, 41da, 41ea) cut out at the lower end and an entrance 41 (41bb, 41cb, 41db, 41eb) cut out at the upper end are provided. And the thermal radiation part 6 is installed in the other surface where the reciprocating flow generation | occurrence | production plate 51 heat sink 4 is not attached (refer FIG. 6).

  Since the reciprocating flow generating plate 51 has a simple structure including only two endothermic surfaces and a second flow path formed therein as described above, the reciprocating flow generating plate 51 can be manufactured with a thickness of, for example, several millimeters.

  On the other hand, as is apparent from FIG. 4B, a first flow path that meanders in the same manner as in the reciprocating flow generating plate 51 is formed in the heat absorbing plate 4. The second flow path of the reciprocating flow generating plate 51 and the first flow path of the heat absorbing plate 4 are in contact with the heat transfer fluid 42 and the reciprocating flow generating plate 51 and the heat absorbing plates 4a, 4b, 4c and 4d. It is provided to earn an area.

  The endothermic plates 4 a, 4 b, 4 c, 4 d are connected to the corresponding positions of the respective inlets 41 ba, 41 ca, 41 da, 41 ea and 41 bb, 41 cb, 41 db, 41 eb of the reciprocating flow generating plate 51 at the end face where the endothermic plates 4 a, 4 b, 4 c, 4 d are joined. Each has an entrance.

  Thus, the reciprocating flow generating plate 51 and the heat absorbing plates 4 a, 4 b, 4 c, 4 d are joined to each other through the reciprocating flow generating plate 51 through the inlets 41 and the heat absorbing plates 4. The heat transfer fluid 42 in the generation plate 51 and the heat absorption plate 4 can flow.

  Each endothermic plate 4a, 4b, 4c, 4d has a simple structure consisting of only two endothermic surfaces and a first flow path formed therein, as described above. For example, it can be manufactured with a thickness of about several millimeters. It is.

  FIG. 5 shows the details of the configuration of the flow generating means 50 including the vibrating body 52 and the vibrating mechanism 53 arranged in the second flow path in the reciprocating flow generating plate 51 of the reciprocating flow generating section 5. It is BB sectional drawing of a). The vibrating body 52 is composed of a U-shaped ferromagnetic body, and a first vibrating terminal 52a having one end of the U-shaped magnetized to the N pole, and a second vibrating terminal 52c having the other end magnetized to the S pole. The vibrating body main body 52b that connects the first vibration terminal 52a and the second vibration terminal 52c.

  The surfaces of the first vibration terminal 52a, the second vibration terminal 52c, and the vibration body main body 52b are covered with a coating material having excellent heat resistance, electrical insulation resistance, impact resistance, and the like such as polytetrafluoroethylene. ing.

  The vibration mechanism 53 generates an E-shaped magnetic field, and includes first and third terminals 53a and 53c at both ends, a second terminal 53b at the center of the E-shape, and a first terminal 53a. The second terminal 53b and the third terminal 53c are connected by a vibration mechanism body 53d. A coil 53e is wound around the second terminal 53b. The end surfaces of the first terminal 53a, the second terminal 53b, and the third terminal 53c are in the same direction as the second channel surface in the flow direction of the second channel in the reciprocating flow generating plate 51. It is arranged to become. Further, the relationship between the vibrating body 52 and the vibration mechanism 53 is such that the first concave portion formed between the first terminal 53a and the second terminal 53b of the vibration mechanism 53 and the second terminal 53b and the third terminal 53c. The first and second vibration terminals 52a and 52c of the vibrating body 52 are engaged with the second recess formed between them so as to be movable in the directions of arrows L2 and L3 shown in FIGS. 5 (a) and 5 (b). ing.

  The end surface of the first terminal 53a, the first recess, the end surface of the second terminal 53b, the second recess, and the end surface of the third terminal 53c of the vibration mechanism 53 in contact with the heat transfer fluid 42 are made of polytetrafluoroethylene. It is coated with a coating material with excellent heat resistance, electrical insulation resistance, impact resistance, etc.

  The control unit 54 controls the operation of the vibrating body 52 by supplying an alternating current having a predetermined frequency to the coil 53 e of the vibration mechanism 53.

  In this way, the vibrating body 52 and the vibrating mechanism 53 of the flow generating means 50 can be reduced in size because they have a simple structure. The vibrating body 52 is disposed in the second flow path of the reciprocating flow generating plate 51, and the vibrating mechanism 53 Is sealed and fixed to the reciprocating flow generating plate 51 so that the internal heat transfer fluid 42 does not flow out.

  Next, with reference to FIG.4 and FIG.5, the operation | movement in the reciprocating flow generation | occurrence | production part 5 is demonstrated. A half wave when the control unit 54 energizes the coil 53e with a predetermined alternating current to flow current, and a magnetic field is generated between the first and third terminals 53a and 53c and the second terminal 53b of the vibration mechanism 53. As a result, the first and third terminals 53a and 53c are magnetized to the S pole shown in FIG. 5A, for example, and the second terminal 53b is magnetized to the N pole.

  A force attracting the first terminal 53a acts on the first vibration terminal 52a magnetized on the N pole of the vibration body 52, and also on the second vibration terminal 52c magnetized on the S pole of the vibration body 52. A force attracting the second terminal 53b works. The vibrating body 52 moves in the L2 direction by these simultaneously acting magnetic forces, and the first and second vibrating terminals 52a and 52c come into contact with the first and second terminals 52a and 52b, respectively, and stop.

  Due to the movement of the vibrating body 52 in the L2 direction, the heat transfer fluid 42 passes through the second flow path in the reciprocating flow generation plate 51 and the respective heat absorption plates 4a, 4b, 4c, 4d, and 4e. 1 flows in the direction of the solid arrow shown in FIG.

  Further, in the next half wave due to energization of the coil 53e from the control unit 54, a magnetic field is generated between the first and third terminals 53a, 53c and the second terminal 53b, and the first and third terminals 53a. 53c are magnetized to the N pole shown in FIG. 5B, and the second terminal 53b is magnetized to the S pole.

  A force attracting the second terminal 53b acts on the first vibration terminal 52a of the vibrating body 52, and a force attracting the third terminal 53c also acts on the second vibration terminal 52c of the vibrating body 52. Due to these simultaneously acting magnetic forces, the vibrating body 52 moves in the L3 direction, and the first and second vibrating terminals 52a and 52c come into contact with and stop at the second and third terminals 52b and 52c, respectively.

  Due to the movement of the vibrating body 42 in the L3 direction, the heat transfer fluid 42 flows through the second flow path in the reciprocating flow generation plate 51 through the flow paths in the heat absorbing plates 4a, 4b, 4c, 4d, 4e. Flows in the direction of the broken arrow shown in FIG. 4B opposite to the direction of the solid arrow.

  Thus, since the vibrating body 52 is reciprocally oscillated by two magnetic forces acting on the vibrating body 52 and moved in the L2 and L3 directions, the heat transfer fluid 42 in the second flow path in the reciprocating flow generation plate 51 is The heat transfer fluid 42 in the first flow path in each of the heat absorbing plates 4a, 4b, 4c, 4d, and 4e communicating with the second flow path via the inlet / outlet ports 44ba and 41bb by this movement also reciprocally flows. Can be made.

  When an alternating current is passed through the coil 53e at a frequency of several hertz, the vibrating body 52 repeats reciprocating vibration with an amplitude of, for example, several tens of mm in the L2 and L3 directions at that frequency. Due to the reciprocating vibration of the vibrating body 52, the heat transfer fluid 42 reciprocates at the above-mentioned frequency in the second flow path in the reciprocating flow generating plate 51 and the first flow paths in the heat absorbing plates 4a, 4b, 4c, 4d. To do. For this reason, by giving the heat transfer fluid 42 a reciprocating flow having an amplitude of several tens of millimeters at a frequency of several hertz, a heat transfer phenomenon occurs due to the flow of the heat transfer fluid 42, and heat transport control can be performed.

  As described above, the heat transfer fluid 42 is reciprocally flown in the second flow path in the reciprocating flow generating plate 51 and the first flow paths in the heat absorbing plates 4a, 4b, 4c, and 4d. It is possible to set the effective heat conductivity higher than the heat conductivity of the heat absorbing plates 4a, 4b, 4c, 4d and the heat transfer fluid 42 made of a metal material having high heat conductivity, and the imaging unit 2, the system control unit 9, etc. The heat from the substrate 27 can be efficiently transmitted to the heat radiating portion 6 through the heat absorbing plate heats 4a, 4b, 4c, and 4d.

  FIG. 6 is a view showing the mounting position of the heat radiating portion 6. The heat dissipating part 6 uses a heat dissipating fan, and is joined to the heat dissipating part installation surface on the opposite side of the heat absorbing plates 4a, 4b, 4c, 4d mounting surface of the reciprocating flow generating plate 51. The heat dissipating part installation surface of the reciprocating flow generating plate 51 is formed by a concave portion formed around the center of the heat absorbing surface of the reciprocating flow generating plate 51, and is formed thinner than other portions of the heat absorbing surface.

  The heat radiating unit 6 is disposed near the side surface or the back cover of the ultrasonic diagnostic apparatus 10 and releases heat from the imaging unit 2 and the substrate 27 of the system control unit 9 transmitted through the heat transfer fluid 42 to the outside. To do.

  According to the embodiment of the present invention described above, the reciprocating flow generating plate 51 and the heat absorbing plates 4a, 4b, 4c, 4d are simple in that the heat absorbing surfaces on both sides and the second and first flow paths are formed inside. Because of the structure, it can be made thinner. Further, the flow generating means 50 including the vibrating body 52 and the vibrating mechanism 53 can be reduced in size because of its simple structure, and the vibrating body 52 is disposed in the second flow path in the reciprocating flow generating plate 51 to generate the reciprocating flow. The vibration mechanism 53 can be fixed to the plate 51.

  The vibration body 52 is reciprocally oscillated by the magnetic force acting on the vibration body 52 to reciprocate the heat transfer fluid 42 in the heat absorbing plates 4a, 4b, 4c, 4d, thereby making the heat transfer fluid 42 have a high effective thermal conductivity. Therefore, the heat from the substrates 27a, 27b, 27c, and 27d can be efficiently transmitted to the heat radiating unit 6 by the heat absorbing plate heats 4a, 4b, 4c, and 4d.

  From the above, the heat sink plates 4a, 4b, 4c, and 4d having a reduced thickness are arranged in the vicinity of the substrate 27 to cool the electronic elements that are susceptible to temperature due to the heat generated by the electronic elements incorporated in the substrate 27. As a result, the interval between the substrates 27 can be reduced, and as a result of the size reduction of the substrate storage unit 31, the ultrasonic diagnostic apparatus 10 can be reduced in size.

  In addition, this invention is not limited to the said Example, A temperature sensor is provided in the heat absorption part 4, and the frequency of the electric current supplied to the coil 53e of the vibration mechanism 53 is controlled based on the signal from a temperature sensor. Thus, the flow generating means 50 including the vibrating body 52 and the vibration mechanism 53 can be efficiently operated.

  Moreover, a temperature sensor may be provided in the heat absorption part 4, and it may implement so that it may cool forcibly using a Peltier device etc. based on the signal from a temperature sensor. Thereby, it can cool more powerfully than a heat radiating fan.

1 is a block diagram showing a configuration of an ultrasonic diagnostic apparatus according to an embodiment of the present invention. 1 is a perspective view of an ultrasonic diagnostic apparatus that stores a substrate storage unit according to an embodiment of the present invention. 1 is a schematic view of a substrate storage unit and a cooling unit according to an embodiment of the present invention. Sectional drawing of the heat sink which concerns on the Example of this invention. The figure which shows the structure of the vibrating body and vibration mechanism which concern on the Example of this invention. The perspective view for demonstrating the installation place of the thermal radiation part which concerns on the Example of this invention.

Explanation of symbols

P Subject 1 Ultrasonic probe 2 Imaging unit 3 Cooling unit 4 Endothermic unit 4a, 4b, 4c, 4d, 4e Endothermic plate 5 Reciprocating flow generating unit 6 Radiating unit 7 Display unit 8 Operating unit 9 System control unit 10 Ultrasonic diagnostic apparatus 21 Transmission / reception unit 24 Image data generation unit 27 Substrate 31 Substrate storage unit 42 Heat transfer fluid 50 Flow generation means 51 Reciprocating flow generation plate 52 Vibrating body 53 Vibration mechanism 54 Control unit

Claims (3)

An ultrasonic probe for transmitting and receiving ultrasonic waves to and from a subject;
An imaging means having a substrate in which an electronic element for generating image data by performing generation of an ultrasonic drive signal to the ultrasonic probe and processing of an ultrasonic reception signal from the ultrasonic probe is incorporated;
Display means for displaying image data generated by the imaging means;
A heat-absorbing plate disposed in the vicinity of the substrate and absorbing heat from the electronic element, and a reciprocating flow generating portion composed of a reciprocating flow generating plate in which one end of the heat-absorbing plate is fixed to one surface;
A heat transfer fluid is accommodated in the first and second flow paths formed in the heat absorption plate and in the reciprocating flow generation plate and communicating with each other.
An ultrasonic diagnostic apparatus, comprising: a magnetic body disposed in the second flow path; and a flow generation means including a vibration mechanism that causes a magnetic field to act on the magnetic body to reciprocally vibrate at a predetermined frequency. The magnetic body forming the flow generating means is disposed with a first vibration terminal magnetized on one pole of the magnetic pole and spaced apart from the first vibration terminal in the flow direction of the second flow path. A second vibration terminal that is magnetized to the other pole of the magnetic pole, and a vibration body that connects the first vibration terminal and the second vibration terminal and engages the second flow path. And
The vibration mechanism includes first and third terminals that are spaced apart in the flow direction in the second flow path, and a second that is spaced apart between the first and third terminals. A first recess is formed between the terminal and the first and second terminals in the second flow path, and the first vibration terminal engages movably in the flow direction of the second flow path. And a second recess formed between the second and third terminals, the second vibration terminal being movably engaged in the flow direction of the second flow path, and wound around the second terminal. A coil that is rotated,
The ultrasonic diagnostic apparatus according to claim 1, wherein:   The ultrasonic diagnostic apparatus according to claim 1, wherein the first and second flow paths meander.

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