WO2006025372A1 - X線源 - Google Patents
X線源 Download PDFInfo
- Publication number
- WO2006025372A1 WO2006025372A1 PCT/JP2005/015746 JP2005015746W WO2006025372A1 WO 2006025372 A1 WO2006025372 A1 WO 2006025372A1 JP 2005015746 W JP2005015746 W JP 2005015746W WO 2006025372 A1 WO2006025372 A1 WO 2006025372A1
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- WO
- WIPO (PCT)
- Prior art keywords
- circuit board
- ray
- plate portion
- flat plate
- ray source
- Prior art date
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/02—Constructional details
Definitions
- the present invention particularly relates to an X-ray source used as a microfocus X-ray source.
- a microfocus X-ray source described in Patent Document 1 is known as a technique in such a field.
- This microfocus X-ray source is a type of X-ray source equipped with an X-ray tube that collides electrons from an electron gun with a target and irradiates the generated X-rays to the outside through an irradiation window.
- Patent Document 1 Japanese Patent No. 2634369
- This type of microfocus X-ray source is also used in CT scanners that obtain non-destructive cross-sectional images of an object by transmitting X-rays through the object.
- X-ray irradiation is applied to the object from various directions while moving the X-ray source in a circle around the object.
- the circuit board of the X-ray source is subject to vibration, so that the circuit board may be broken due to vibration, and the life of the circuit board may be reduced. Has been pointed out to be shorter. Therefore, in such an X-ray source, in order to minimize the vibration of the circuit board as much as possible, it is an issue to stably fix the circuit board.
- an object of the present invention is to provide an X-ray source that can stably fix a circuit board.
- an X-ray source includes an X-ray generation unit that has an X-ray tube and irradiates a subject with X-rays emitted from the X-ray tube, and a control component.
- a circuit board holder supported in the casing, and a cooling fan for flowing cooling air around the circuit board holder inside the casing are provided.
- the circuit board is fixed to the flat part of the circuit board holder (at least one of the first flat part and the second flat part) in the housing.
- the first flat plate portion and the second flat plate portion facing each other are connected to ensure mechanical strength. That is, the circuit board is fixed to the circuit board holder having mechanical strength.
- the end portion of the first flat plate portion and the end portion of the second flat plate portion are connected.
- the circuit board holder By connecting the first and second flat plate portions at the end portions, the circuit board holder itself can have high mechanical strength.
- an inner angle of an angle formed by intersecting the extended surfaces of the surfaces of the first flat plate portion and the second flat plate portion is an acute angle. Due to such positional relationship of the flat plate portions, the first flat plate portion and the second flat plate portion form a chevron-shaped circuit board holder.
- the housing extends in a direction substantially orthogonal to the first wall having an irradiation window through which X-rays emitted from the X-ray tube are emitted, and a cooling fan is disposed. It is preferable to have a second wall that is formed, and an inclined wall that connects the first wall and the second wall and extends substantially parallel to the first flat plate portion.
- a gap having a substantially constant width is formed between the first flat plate portion and the inclined wall, and cooling air that also generates cooling fan force flows through this gap.
- the width of the gap is substantially constant, the cooling air can flow in the gap without stagnation, and the cooling air smoothly flows in the housing.
- the X-ray source of the present invention includes a drive power supply unit that supplies drive power to the X-ray generation unit, and the drive power supply unit is fixed to the circuit board holder and in the vicinity of an exhaust port provided in the housing. It may be placed in In this case, the cooling air flowing around the drive power supply unit is quickly exhausted to the outside after the heat from the high-temperature drive power supply unit is removed, and then the exhaust outlet force in the vicinity of the drive power supply unit.
- the circuit board is securely fixed in the housing by fixing the circuit board to the circuit board holder having ensured mechanical strength, so that the circuit board is prevented from being disconnected or shortened. be able to.
- circuit board holder having a mountain structure
- the mechanical strength of the circuit board holder can be further increased.
- the circuit board can be tilted and stored in the housing, the housing itself can be downsized.
- the circuit board fixed to the circuit board holder can be efficiently cooled, and the operation characteristics of the circuit board can be stabilized.
- the drive power supply unit By disposing the drive power supply unit in the vicinity of the exhaust port, the drive power supply unit can be efficiently cooled, and the cooling air after cooling the drive power supply unit circulates in the housing, thereby Can be prevented from rising.
- FIG. 1 is an exploded perspective view showing a first embodiment of an X-ray source according to the present invention.
- FIG. 2 is a front view of the X-ray source shown in FIG.
- FIG. 3 is a cross-sectional view of the X-ray generation part of the X-ray source shown in FIG.
- FIG. 4 is a cross-sectional view of the control unit of the X-ray source shown in FIG.
- FIG. 5 is a cross-sectional view showing a second embodiment of the X-ray source according to the present invention.
- FIG. 1 is an exploded perspective view of an X-ray source according to the present invention
- FIG. 2 is a front view thereof.
- X-ray source 1 is a type equipped with an X-ray tube that causes electrons from an electron gun to collide with a target and irradiate the generated X-rays to the outside through an irradiation window.
- X-ray source for example, used as an X-ray source in CT scanners.
- An X-ray generation unit 5 that generates and emits X-rays and a control unit 7 that controls the X-ray generation unit 5 are stored inside the housing 3 of the X-ray source 1.
- the internal space of the housing 3 is composed of an X-ray generator housing space R1 for housing the X-ray generator 5 and a control housing space R2 for housing the controller 7.
- the X-ray generator housing space A partition wall 15 extending downward from the upper inner wall of the housing 3 is provided between R1 and the control unit accommodating space R2, and separates both spaces Rl and R2.
- the X-ray generation unit 5 receives a high-voltage power source unit 17 fixed to the bottom plate 3a of the housing 3 and power supplied from the high-voltage power source unit X.
- An X-ray tube 27 for irradiating a line and a metal tube (X-ray tube surrounding portion) 29 surrounding a part of the X-ray tube 27 are provided.
- the high voltage power supply unit 17 includes a high voltage transformer 19 that can generate a high voltage, a high voltage supply circuit 23 that multiplies the high voltage generated by the high voltage transformer 19 and supplies the high voltage to the X-ray tube 27, and a high voltage transformer 19 and a high voltage supply.
- the high-voltage supply circuit 23 and the conductive wires 25a and 25b are molded in an insulating block 21 made of an electrically insulating material (for example, epoxy resin), and the high-voltage transformer 19 is a side surface of the insulating block 21. It protrudes toward the control unit 7 side.
- Such a structure of the high-voltage power supply unit 17 prevents discharge from the high-voltage supply circuit 23 and the conductive wires 25a and 25b to which a high voltage is applied to the outside.
- the X-ray tube 27 located above the high-voltage power supply unit 17 is a reflective target type X-ray tube, and includes a valve unit 27a that holds and stores the rod-shaped anode 27b in an insulated state, and a rod-shaped tube A target accommodating portion 27d that accommodates a target 27c provided at an end of the anode 27b and an electron gun portion 27e that accommodates an electron gun 27k that emits an electron beam toward the reflecting surface of the target 27c are provided.
- valve portion 27a and the target accommodating portion 27d are arranged coaxially, and the axis of the electron gun portion 27e is substantially orthogonal to the axis.
- the base end portion of the rod-shaped anode 27b protrudes downward from the lower portion of the valve portion 27a as the high voltage application portion 27g.
- a socket 33 is electrically connected to the lower portion of the high-voltage applying unit 27g, and the socket 33 is electrically connected to the high-voltage supply circuit 23 via a conductor 25b of the high-voltage power supply unit 17. !
- a high voltage is supplied to the X-ray tube 27 from the high voltage supply circuit 23 via the conductor 25b.
- the electron gun 27k in the electron gun unit 27e emits electrons toward the target 27c, X-rays are generated from the target 27c.
- the X-ray irradiation window 27h provided in the opening of the force target accommodating portion 27d is irradiated with force.
- the X-ray tube 27 is a sealed type, and the inside thereof is sealed in a vacuum.
- the X-ray tube 27 is provided with an exhaust pipe (not shown), and after the inside of the valve portion 27a, the target accommodating portion 27d, and the electron gun portion 27e is evacuated, the exhaust pipe It is sealed by sealing.
- the metal tube 29 is provided so as to protrude upward from the upper surface of the high-voltage power supply unit 17 and is formed in a cylindrical shape surrounding the X-ray tube 27.
- the metal tube 29 is formed of a metal with excellent heat dissipation (for example, aluminum) in order to efficiently dissipate heat generated from the X-ray tube 27, and a plurality of cooling fins extending in the horizontal direction are disposed around the metal tube 29. 29a is provided. Cooling fins 29a is provided as a protrusion extending in the circumferential direction on the circumferential surface of the metal tube 29, and expands the surface area of the metal tube 29, and can efficiently dissipate heat generated from the X-ray tube 27. .
- An opening 29j is formed at the distal end surface of the metal tube 29, and the valve 27a of the X-ray tube 27 is inserted into the force of the opening 29j.
- Insulating oil 31 which is a liquid electrical insulating material, is injected into the internal space of the metal tube 29.
- a mounting flange 27f is formed between the valve portion 27a and the target accommodating portion 27d of the X-ray tube 27, and the X-ray tube 27 is attached to the tip surface of the metal tube 29 by the mounting flange 27f.
- the valve portion 27a is immersed in the insulating oil 31.
- FIG. 4 is a cross-sectional view of the control unit 7.
- the control unit 7 is disposed in the control unit accommodating space R2, and includes a first circuit board 35, a second circuit board 37, and a drive power supply unit 39.
- the first circuit board 35 controls the voltage that can be generated by the high-voltage power supply unit 17 from a high voltage (for example, 160 kV) to a low voltage (for example, OV). Further, the first circuit board 35 controls the timing of electron emission, tube voltage, tube current, and the like in the electron gun unit 27e.
- the second circuit board 37 controls the operation of the first circuit board 35 based on a control signal of an external force.
- the drive power supply unit 39 is a converter that performs ACZDC conversion (or DCZDC conversion) on power supplied also from an external force.
- the drive power supply unit 39 supplies drive power to the first circuit board 35 and the second circuit board 37, and also generates an X-ray generation unit. Supply power for generating high voltage to the five high-voltage transformers 19. Note that the first circuit board 35, the second circuit board 37, the drive power supply unit 39, and the X-ray generation unit 5 are appropriately electrically connected to each other by a conductive wire (not shown).
- the control unit 7 is provided with a circuit board holder 49 made of a heat conductive metal (for example, aluminum) in the control unit accommodating space R2, and the first circuit board 35, The second circuit board 37 and the drive power supply unit 39 are held.
- the circuit board holder 49 is a member formed by bending a single plate-like member made of a heat conductive metal, and is a first flat plate inclined to the bottom plate 3a. 46, a second flat plate portion 48 erected substantially perpendicular to the bottom plate 3a, a third flat plate portion 50 provided substantially parallel to the bottom plate 3a, and a substantially vertical plate to the bottom plate 3a. And a fourth flat plate portion 52 provided.
- the first flat plate portion 46 and the second flat plate portion 48 each extend along a plane intersecting with an acute angle ⁇ , and the first flat plate portion 46 is an inclined wall 3d of the casing 3 described later. It extends almost in parallel.
- the circuit board holder 49 has a plurality of (for example, three) screws 49a in a state where the lower foot portion 43 ⁇ 4 of the first flat plate portion 46 and the lower foot portion 47j of the fourth flat plate portion 52 are in contact with the bottom plate 3a. It is fixed by.
- the first flat plate portion 46 has a first mounting surface 45a for mounting the first circuit board 35
- the second flat plate portion 48 is a second mounting surface for mounting the second circuit board 37
- the third flat plate part 50 has a third attachment surface 47c for attaching the drive power supply part 39.
- the circuit board holder 49 has a chevron structure to maintain the mechanical strength of the circuit board holder 49 itself, and a plurality of locations at the foot portions 43 ⁇ 4 and 47j are screwed to the bottom plate 3a.
- the base plate 3a is stably fixed. Therefore, the circuit boards 35 and 37 and the drive power supply unit 39 attached to the circuit board holder 49 can be stably and reliably fixed to the bottom plate 3a.
- the first flat plate portion 46 of the circuit board holder 49 is inclined with respect to the bottom plate 3a, the first circuit board 35 can be accommodated in the control unit accommodating space R2 while being inclined. The height dimension of the X-ray source 1 can be reduced.
- the high-voltage transformer 19 of the high-voltage power supply unit 17 is accommodated.
- the first circuit board 35 extends along the first mounting surface 45a of the first plate 45 via the spacer 51. Attached. Similarly, the second circuit board 37 is mounted along the second mounting surface 47b of the second plate 47 via the spacer 51, and the drive power supply unit 39 is mounted on the third mounting surface 47c of the second plate 47. And is attached via a spacer 51.
- the X-ray generation unit 5 including the metal tube 29 is stored inside the housing 3 and is orthogonal to the bottom plate 3 a of the housing 3.
- the cooling fan unit 55 is disposed on the side wall (second wall) 3b that rises in the direction, and the cooling air is allowed to flow into the housing 3, whereby the metal tube 29 is air-cooled.
- the housing 3 extends in parallel with the bottom plate 3a and has an opening (irradiation unit) for emitting X-rays from the X-ray tube 27 to the outside for irradiation. It has an upper wall (first wall) 3c provided with 3 ⁇ 4. The opening is provided at a position corresponding to the irradiation window 27h of the X-ray tube 27, and exposes the irradiation window 27h to the outside.
- a wall connecting the upper wall 3c and the side wall 3b is formed as an inclined wall 3d.
- the wall that connects the side wall 3f facing the side wall 3b and the upper wall 3c is also an inclined wall 3e. The inclination angles of the inclined wall 3d and the inclined wall 3e with respect to the upper wall 3c may be different or the same.
- the cooling fan unit 55 is disposed on the side wall 3b of the housing 3 as described above, and includes the cooling fan 55a that rotates about an axis perpendicular to the side wall 3b.
- the cooling fan 55a rotates to cause air to flow from the outside to the inside of the housing 3.
- the cooling fan 55a is arranged in the vicinity of the X-ray generation unit 5 so that the cooling air directly hits the X-ray generation unit 5.
- the air taken into the housing 3 by the cooling fan 55a flows in the X-ray generation unit accommodating space R1 as cooling air, and hits the metal cylinder 29 without unevenness. Flowing in the direction of the side wall 3f while passing.
- the cooling air passing around the metal tube 29 is guided by the cooling fins 29a and smoothly flows in the horizontal direction, hits the metal tube 29 with a sufficient heat transfer area, and efficiently transfers heat from the metal tube 29. Take away heat .
- the metal tube 29 can be efficiently cooled.
- heat conduction from the X-ray tube 27 surrounded by the metal tube 29 to the metal tube 29 is also promoted, whereby the X-ray tube 27 can be efficiently cooled.
- the metal tube 29 contacts the cooling air without any unevenness and is cooled, output fluctuation and output decrease due to temperature unevenness of the X-ray tube 27 can be suppressed. Thereafter, the cooling air whose temperature has been increased by removing heat from the metal tube 29 is discharged to the outside through the exhaust port 3k provided in the inclined wall 3e.
- the wall connecting the upper wall 3c and the side wall 3b is the inclined wall 3d, the stagnation of the cooling air is suppressed, and a smooth flow of the cooling air in the housing 3 can be realized. it can. As a result, the cooling air smoothly flows around the metal tube 29, and the metal tube 29 can be efficiently cooled.
- the wall connecting the upper wall 3c and the side wall 3f of the housing 3 is also the inclined wall 3e, which contributes to a smooth flow of the cooling air.
- the metal tube 29 can be efficiently cooled to efficiently cool the X-ray tube 27, so that the output of the X-ray source can be increased.
- the X-ray source 1 has a connector portion (not shown) connected to a personal computer or the like in a part of the side wall 3b on the control unit accommodating space R2 side. Input / output of signals related to control information of the PC iso-force, etc. is performed through this connector section.
- the cooling fan unit 55 and the connector section are electrically connected to the control section 7 and the like, so they are separate from other parts of the casing 3. If it is, it is preferable in terms of maintenance of the X-ray source 1 or the like.
- the cooling fan unit 55 and the connector part (not shown) are fixed to the bottom plate 3a and electrically connected to the control part 7.
- the inclined wall 3d and the inclined wall 3e are formed in the casing 3 of the X-ray source 1, the following effects can also be obtained.
- the inclined walls 3d and 3e are not provided, corners are formed between the upper wall 3c and the side walls 3b and 3f.
- the tilted inspection object hits the corner, and therefore the irradiation window 27h and the inspection object are sufficiently close to each other. I can't let you.
- the inspection object can be brought closer to the irradiation window 27h.
- the partition wall 15 in the housing 3 partitions between the metal tube 29 and the control unit 7 that completely separates the X-ray generation unit accommodation space R1 and the control unit accommodation space R2.
- a ventilation port 59 that communicates the X-ray generation unit accommodation space R 1 and the control unit accommodation space R 2.
- the temperature rise of the control unit 7 can be suppressed, and the operation of the circuit boards 35 and 37 of the control unit 7 can be stabilized.
- the X-ray generation unit accommodating space R1 and the control unit accommodating space R2 are communicated with each other by the vent 59, a part of the cooling air generated by the cooling fan 55a is accommodated through the vent 59. Since it flows into the space R2, the control unit 7 can be cooled by this cooling air.
- the ventilation space R2b is formed as a gap between the first flat plate portion 46, the side wall 3b, and the inclined wall 3d, and the cooling air flowing into the ventilation space R2b flows around the first circuit board 35. As a result, the first circuit board 35 is cooled.
- the ventilation space R2b since the first flat plate portion 46 extends substantially parallel to the inclined wall 3d, the ventilation space R2b has a substantially constant width. Therefore, in this ventilation space R2b, the cooling air flows smoothly without stagnation, and the first circuit board 35 can be efficiently cooled. After that, a part of the cooling air is discharged outside through the exhaust port 3q provided in the inclined wall 3d, and the other part flows into the ventilation space R2c through the space between the upper wall 3c and the circuit board holder 49. To do.
- the cooling air flowing into the ventilation space R2c from the ventilation opening 59 passes through the ventilation opening 59 from the side wall 3g. Flows in the direction of the force toward the exhaust port 3h (see Fig. 1 and Fig. 2).
- the cooling air efficiently cools the drive power supply unit 39 while contacting the drive power supply unit 39 with a sufficient area, and is discharged to the outside through the exhaust port 3h provided in the side wall 3g.
- the drive power supply 39 that generates high heat can be efficiently cooled, and the operation of the drive power supply 39 can be stabilized.
- the cooling air flowing into the ventilation space R2c from the ventilation space R2b flows around the second circuit board 37 to cool the second circuit board 37 and further flows around the drive power supply 39. After driving and cooling the drive power supply 39, it is discharged to the outside through the exhaust port 3r provided in the inclined wall 3e and the side wall 3f. At this time, since the upper wall 3c and the side wall 3f of the casing 3 are connected by the inclined wall 3e, the cooling air flowing in the ventilation space R2c stagnates along the walls 3c, 3e, 3f. It flows smoothly and smooth cooling air flow occurs. A part of the cooling air flowing in the ventilation space R2c is discharged to the outside through the exhaust port 3s provided in the upper part of the inclined wall 3e.
- the first circuit board 35, the second circuit board 37, and the drive power supply unit 39 are mounted in a state of floating from the mounting surfaces 45a, 47b, 47c via the spacer 51. Therefore, the cooling air passes on both the front and back surfaces of the first circuit board 35, the second circuit board 37, and the drive power supply unit 39. Therefore, such a mounting method also contributes to efficient cooling of the first circuit board 35, the second circuit board 37, and the drive power supply unit 39.
- a tunnel portion R2a surrounded by the circuit board holder 49 and the bottom plate 3a is formed in the control portion accommodating space R2, and the tunnel portion R2a is also cooled from the ventilation port 59. Wind flows in.
- This tunnel section R2a extends in the direction in which cooling air flows in through the ventilation openings 59 (perpendicular to the paper surface of FIG. 4), so that a smooth cooling air flow that concentrates on the tunnel section R2a Will occur.
- this tunnel portion R2a there is a high-voltage transformer 19 provided so as to protrude from the insulation block 21, so that the high heat generated in the high-voltage transformer 19 is efficiently removed by the cooling air, and the high-voltage transformer 19 Can be cooled intensively and efficiently. Thereafter, the cooling air that has taken heat from the high-voltage transformer 19 and has reached a high temperature is discharged to the outside through the exhaust port 3h (see FIGS. 1 and 2) provided in the side wall 3g of the casing 3.
- the smooth cooling air flow is generated in the tunnel portion R2a as described above, for example, another circuit board is provided on the surface opposite to the first mounting surface 45a and the second mounting surface 47b. Once installed, the circuit board can be placed in the tunnel R2a and cooled.
- the power transistor 61 (see FIG. 2) generates a relatively large amount of heat, so that it is separated from the first circuit board 35, and the high-voltage power supply unit 17 and the cooling fan are separated. It is installed in close contact with a metal heat sink 63 provided between the knit 55. At this time, the power transistor 61 functions as a component of the first circuit board 35 by being electrically connected to the first circuit board 35 by a conducting wire (not shown). With such an arrangement, the heat sink 63 is cooled by receiving the cooling air from the cooling fan 55a, and the power transistor 61 tightly attached to the heat sink 63 is indirectly cooled. In this way, the temperature rise of the control unit 7 can be effectively suppressed by separately cooling components that generate particularly large heat away from the circuit board body force.
- FIG. 5 is a sectional view showing a second embodiment of the X-ray source according to the present invention.
- the circuit board holder 49 of the X-ray source 71 includes a first plate 45 and a second plate 47 that also have a heat conductive metal force.
- the first plate 45 has a first flat plate portion 46 that is inclined and set up with respect to the bottom plate 3a
- the second plate 47 is a second flat plate that is set up substantially perpendicular to the bottom plate 3a.
- the first plate 45 includes a plurality of (for example, three) pieces with the foot 43 ⁇ 4 in contact with the bottom plate 3a.
- the second plate 47 is fixed by a plurality of (for example, three) screws 49a in a state where the foot 47j is in contact with the bottom plate 3a. Further, the upper ends of the plates 45 and 47 are connected to each other by screws 49b in an overlapped state. Also with such a circuit board holder 49, the circuit boards 35 and 37 and the drive power supply unit 39 attached to the circuit board holder 49 can be stably and securely fixed to the bottom plate 3a.
- the X-ray source 71 includes a cooling fan unit 77 that is different from the cooling fan unit 55 on the control unit accommodation space R 2 side of the housing 73.
- the cooling fan unit 77 is provided in an exhaust port 73r formed in the side wall 3f in the vicinity of the drive power supply unit 39, and is an exhaust type unit for sending air inside the housing 73 to the outside.
- the cooling fan unit 77 includes a cooling fan 77a and a motor 77b that rotates the cooling fan 77a. When the cooling fan 77a rotates, air inside the housing 73 is sent out to the outside.
- the drive power supply 39 can be cooled more efficiently, and the cooling air that has cooled the drive power supply 39 flows back to the ventilation spaces R2c and R2b and the first circuit board 35
- the temperature of the second circuit board 37 can be prevented from rising on the contrary.
- the operation characteristics of the first circuit board 35, the second circuit board 37, and the drive power supply unit 39 can be stabilized.
- the cooling fan 77a sends out the air in the housing 3 to the outside, so that the cooling air flow in the entire housing 3 becomes faster. Part 7 can be cooled more efficiently.
- the X-ray generation unit accommodation space R1 and the control unit accommodation space R2 may be partitioned.
- a cooling fan is provided in each of the X-ray generation unit accommodating space R1 and the control unit accommodating space R2, cooling can be performed intensively by flowing cooling air intensively in each space. I'll do it.
- the circuit board holder 49 is not limited to being screwed, but may be fixed to the bottom plate 3a by welding or bonding.
- Circuit board The rudder 49 may be fixed to a member fixed to the casing 3, which may be fixed to a portion other than the bottom plate 3a of the casing 3.
- the first plate 45 and the second plate 47 are not limited to screwing, and may be connected by welding or adhesion.
- the circuit board holder 49 is not limited to one member as in the first embodiment or two members as a combination of the first plate 45 and the second plate 47 as in the second embodiment, and is formed by combining a larger number of members. May be done. In this case, the bending process can be omitted by forming a circuit board holder by combining a number of members having flat plate force.
- the circuit board holder 49 is not limited to a heat conductive metal, and may be made of resin.
- the arrangement of the cooling fan 55a is not limited to the side wall 3b, and may be provided in other parts as long as the cooling air flows around the circuit board holder 49.
- the cooling air can flow between the first flat plate portion 45 and the second flat plate portion 47. May be.
- the X-ray source 1 may include a plurality of cooling fans. In this case, multiple cooling fans of the same type may be arranged. However, it is preferable to combine an intake-type cooling fan and an exhaust-type cooling fan to stably form an internal air flow.
- an intake-type cooling fan is provided on the X-ray generation unit accommodation space side R1, and the control unit It is possible to provide an exhaust type cooling fan on the housing space R2 side.
- the X-ray tube 27 may be a sealed X-ray tube or an open X-ray tube. Further, the X-ray tube 27 may be a transmissive target type that is different from a reflective target type. In this case, the X-ray tube 27 may be accommodated entirely in the metal tube 29. In this case, the X-ray tube 27 irradiates the X-ray from the X-ray tube 27 to the outside. Can be provided. Further, a part of the X-ray tube 27 may protrude from the metal tube 29 and further protrude from the housing 3. The metal tube 29 surrounding the X-ray tube 27 may not be provided with the cooling fin 29a. Further, the X-ray generation unit 5 may be separate from the housing 3.
- the X-ray source according to the present invention is suitable as a microfocus X-ray source used for a CT scanner or the like.
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CN2005800260192A CN1994029B (zh) | 2004-09-02 | 2005-08-30 | X射线源 |
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JP2004256230A JP4541075B2 (ja) | 2004-09-02 | 2004-09-02 | X線源 |
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WO2006025372A1 true WO2006025372A1 (ja) | 2006-03-09 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2784490B1 (en) * | 2013-03-27 | 2020-07-15 | Hitachi High-Tech Science Corporation | X-ray Fluorescence Spectrometer |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP5451265B2 (ja) | 2009-08-31 | 2014-03-26 | キヤノン株式会社 | 放射線撮影装置 |
JP5899006B2 (ja) * | 2012-03-02 | 2016-04-06 | 浜松ホトニクス株式会社 | X線照射源 |
JP7270817B2 (ja) * | 2018-04-12 | 2023-05-10 | 浜松ホトニクス株式会社 | X線発生装置 |
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JP2003149397A (ja) * | 2001-10-31 | 2003-05-21 | Ge Medical Systems Global Technology Co Llc | X線発生装置 |
JP2004022459A (ja) * | 2002-06-19 | 2004-01-22 | Anritsu Sanki System Co Ltd | X線発生装置 |
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US3906363A (en) * | 1974-09-09 | 1975-09-16 | Richard O Fowler | Circuit board continuity testing device |
US4277120A (en) * | 1979-05-29 | 1981-07-07 | Drake Leo O | Printed circuit board storage cabinet |
US4748540A (en) * | 1987-04-24 | 1988-05-31 | Honeywell Bull Inc. | Compact packaging of electronic equipment within a small profile enclosure |
JP2634369B2 (ja) * | 1993-07-15 | 1997-07-23 | 浜松ホトニクス株式会社 | X線装置 |
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---|---|---|---|---|
JP2003149397A (ja) * | 2001-10-31 | 2003-05-21 | Ge Medical Systems Global Technology Co Llc | X線発生装置 |
JP2004022459A (ja) * | 2002-06-19 | 2004-01-22 | Anritsu Sanki System Co Ltd | X線発生装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2784490B1 (en) * | 2013-03-27 | 2020-07-15 | Hitachi High-Tech Science Corporation | X-ray Fluorescence Spectrometer |
Also Published As
Publication number | Publication date |
---|---|
CN1994029A (zh) | 2007-07-04 |
CN1994029B (zh) | 2010-12-15 |
JP4541075B2 (ja) | 2010-09-08 |
JP2006073380A (ja) | 2006-03-16 |
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