公开(公告)号：JPS59180940A

公开(公告)日：1984-10-15

申请号：JP5351083

申请日：1983-03-31

Applicant: Toshiba Corp

Inventor： SUMIYOSHI SEISHIYOU ,  TOKITA KIYOSHI

IPC: H01J29/87

CPC classification number: H01J29/87

Abstract: PURPOSE:To provide an integral implosion-protected cathode ray tube excellent in the implosion-protected effect and suited for mass production, by using thinner auxiliary plate than the reinforced portion of the metal band and thereby providing 3-ply structure all over the joint portion. CONSTITUTION:The stress per unit area of the metal band made of mild steel is approximately 27kg/mm. at the elongation of 0.4%, and therefore approximately 1,015kg of fastening load is provided multiplied by its sectional area, 37.6mm. . Since the stress per unit area of the auxiliary plate 4 made of stainless steel is approximately 31kg/mm. at the elongation of 0.4%, approximately 1,085kg of fastening load is provided multiplied by its sectional area, 35mm. , and thus the load exerting thereon is substantially equal to that exerting on the metal band 1. The metal band 1 is reinforced by the folded portion 3, and at the reinforced portion, the thickness including the folded portion 3 is approximately 1.6mm., against which the auxiliary plate 4 is approximately 1mm. thick. Therefore, at the joint portion between the metal band 1 and the auxiliary plate 4, the auxiliary plate 4 is much thinner than the reinforced portion of the metal band 1, and 3-ply structure is provided all over the joint portion, so that sufficient joint strength is ensured by resistance welding.

Abstract translation: 目的：通过使用比金属带的加强部分更薄的辅助板，提供具有优异的内爆防护效果并适合批量生产的内置防爆阴极射线管，从而在整个接合部分上提供3层结构 。 构成：由软钢制成的金属带的每单位面积的应力在伸长率为0.4％时约为27kg / mm 2，因此提供约1015kg的紧固载荷乘以其截面积37.6mm。 <2>。 由于由不锈钢制成的辅助板4的单位面积的应力约为31kg / mm 2，在伸长率为0.4％的情况下，提供约1085kg的紧固载荷乘以其截面积35mm。<2> ，因此施加在其上的载荷基本上等于在金属带1上施加的载荷。金属带1被折叠部分3加强，并且在加强部分处，包括折叠部分3的厚度大约为1.6mm， 辅助板4大约为1mm。 厚。 因此，在金属带1和辅助板4之间的接合部分，辅助板4比金属带1的加强部分薄得多，并且在整个接合部分上设置有3层结构，使得足够的 通过电阻焊接确保接头强度。

公开(公告)号：JPS59165338A

公开(公告)日：1984-09-18

申请号：JP3821883

申请日：1983-03-10

Applicant: Toshiba Corp

Inventor： TOKITA KIYOSHI ,  NAKAMURA MICHIO

IPC: H01J29/07

CPC classification number: H01J29/076

Abstract: PURPOSE: To suppress occurrence of the doming of a shadow mask at the early stage of its operation, by adapting the slit holes in the shadow mask to be distributed with specific pitches in the horizontal direction.
CONSTITUTION: If the pitches of the slit holes in the shadow mask in the horizontal direction are represented by PO at the center, PH at the end of the horizontal axis, PV at the end of the vertical axis, and PD at the end of the diagonal line, they were adapted to suffice PO

Abstract translation: 目的：通过使荫罩中的狭缝孔在水平方向上以特定的间距进行调整，来抑制荫罩在其操作的早期阶段的拱起发生。 构成：如果水平方向的荫罩中的狭缝孔的间距由中心处的PO表示，水平轴端的PH表示为垂直轴的末端，在末端的PD表示 对角线，它们适应于足够的PO

公开(公告)号：JPH04345735A

公开(公告)日：1992-12-01

申请号：JP11896991

申请日：1991-05-24

Applicant: TOSHIBA CORP

Inventor： TAKAHASHI TORU ,  TOKITA KIYOSHI ,  CHIMURA TADASHI ,  TONAI TAKUMI

IPC: H01J29/02

Abstract: PURPOSE:To ease attaching/detaching a mask with a locking part tilted to the mask side by providing a protruded part, projected to a panel skirt part side, on at least one holder locking part of plural frame holders detachably supporting the shadow mask, and adding mask direction force to the protruded part. CONSTITUTION:A protruded part 31, located closer to a phosphor screen 9 side than an engaging hole 30, is formed on the locking part 27 of a frame holder 25. When a shadow mask 14, mounted on a panel 3 with four holders 25, is removed, an unshown attaching/detaching jig is inserted, between the locking part 27 on which the protruded part 31 is formed and the skirt part 4 of the panel 3, from the opening side of the panel 3, the protruded part 31 is pushed, and a screen 9 side end part is tilted to the mask 14 side, releasing the locking between the locking part 27 and a stud pin 5. Then when the mask 14 is mounted on the panel 3, reversely the attaching/detaching jig is pressed to the protruded part 31, the screen side end part is tilted to the mask 14 side, and then the pressing of the protruded part 31 is released, locking the locking part 27 to the pin 5.

公开(公告)号：JPH04160739A

公开(公告)日：1992-06-04

申请号：JP28548590

申请日：1990-10-23

Applicant: TOSHIBA CORP

Inventor： FUJIWARA TAKESHI ,  TOKITA KIYOSHI ,  KOSHIGOE SHINPEI

IPC: H01J29/48 ,  H01J29/50

Abstract: PURPOSE:To decrease a beam spot so that the resolution of the central portion of a screen can be improved by forming a long hole in the intermediate electrode at the side of a focusing electrode and one open hole or a plurality of open holes in a portion of at least one electrode of a focusing electrode and a final accelerating electrode opposed to an intermediate electrode. CONSTITUTION:A long hole with a long axis or horizontal direction is formed in the intermediate electrode Gm1 at the side of a focusing electrode G5 of a plurality of intermediate electrodes Gm1, Gm2, and one open hole or a plurality of open holes corresponding to a single electron beam or a plurality of electron beams are formed in a portion opposed to the intermediate electrodes Gm1, Gm2 of at least one of the focusing electrode 5 and a final accelerating electrode G6. Even if a focusing electric field is made to change by changing a focusing voltage applied to the focusing electrode G5, therefore, almost no effect is produced on a divergence electric field, so that it is possible to make an electron beam into a condition of under-forcus in a vertical direction and cancel a deflecting distortion generated due to a strong deflecting aberration in a vertical direction. It is thereby possible to improve the resolution in the whole area of a screen.

公开(公告)号：JPH0378939A

公开(公告)日：1991-04-04

申请号：JP21484689

申请日：1989-08-23

Applicant: TOSHIBA CORP

Inventor： FUJIWARA TAKESHI ,  TOKITA KIYOSHI ,  INOUE MASAOI

IPC: H01J29/07

Abstract: PURPOSE:To allow electron beam to reach the whole fluorescent surface by setting the vertical dia. of a vertically outermost slit of a shadow mask below 1/2 of the vertical dia. of slit in the central part over the whole circumference in the vertical direction. CONSTITUTION:In a shadow mask 30 the vertical direction dia. Dv of the outermost slit 31 in vertical direction is smaller than the vertical direction dia. Dc of a slit 32 in the central part of the shadow mask, i.e., set below 1/2. Accordingly at the time of exposure as the process to form fluorescent surface stripes, the intensity of the light passing through this outermost slit is decreased, and only the vertical direction dia. of the fluorescent surface is shrunk to provide practicability of being identical to the raster dia. formed by the electron beam in deflective scanning. Thereby non light emission region to be otherwise generated at the vertical ends of the fluorescent surface is eliminated to allow electron beam reach the whole fluorescent surface.

公开(公告)号：JPH0355741A

公开(公告)日：1991-03-11

申请号：JP19052189

申请日：1989-07-25

Applicant: TOSHIBA CORP

Inventor： FUJIWARA TAKESHI ,  TOKITA KIYOSHI ,  INOUE MASACHIKA

IPC: H01J9/227

Abstract: PURPOSE:To remove a nonluminous area formed on a fluorescent screen by moving a panel synchronously with the movement of a douser and in the opposite direction to the moving direction of the douser, and fixing the panel to move a linear light source synchronously with the movement of the douser and in the same direction. CONSTITUTION:When a panel 18 is exposed, the angle theta1 formed by a light 36 landed on a panel 18 inner surface through the vertically most outside slit hole 35 of a shadow mask for determining the vertical size of a fluorescent screen with a light source position P is smaller than the angle theta2 formed by a light 38 landed on the panel inner surface through the most outside slit hole 37 when the panel is not moved with the light source position P. Thus, the dislocation between a deflection center position formed when electron beams are vertically deflected by a deflecting device having a frame aberration correcting device and the light source position at the time of exposure can be corrected. Thus, the error between the landing point of the electron beams reached to the panel inner surface through the slit hole 35 of the mask 19 by deflection and the landing point of the light reached to the panel inner surface through the same slit hole 37 at the time of exposure can be eliminated.

公开(公告)号：JPH02201848A

公开(公告)日：1990-08-10

申请号：JP2056089

申请日：1989-01-30

Applicant: TOSHIBA CORP

Inventor： TAKAHASHI TORU ,  TOKITA KIYOSHI ,  KOBAYASHI KAZUFUMI ,  SONE TOSHIHISA

IPC: H01J29/50 ,  H01J29/51

Abstract: PURPOSE:To improve the focus characteristic by forming a second magnetic field controlling element in such a manner that it surrounds the passing region of the center beam and the side surface thereof facing each side beam in a concave shape. CONSTITUTION:A second magnetic field controlling element 21 is mounted surrounding each center beam passing hole 24 in three adjacent cup-shaped electrodes of cylindrical electrodes 22a, 22b consisting a fifth grid G5. This second magnetic field controlling element 21b is formed generally in a rectangular annular shape whose side surfaces facing side beam passing holes 24B, 24R are concave. Thus, the raster of the side beams 5B, 5R and the raster of the center beam 5G can be brought in good alignment all over the picture plane. Further, the spot-shape distortion of a pair of side beams 5B, 5R at the ends of vertical axis of the picture plane can be corrected, and the focus characteristic at the peripheral part of the picture plane can be improved.

公开(公告)号：JPH02142034A

公开(公告)日：1990-05-31

申请号：JP29567788

申请日：1988-11-22

Applicant: TOSHIBA CORP ,  TOSHIBA DEVICE ENG KK

Inventor： INOUE MASACHIKA ,  TOKITA KIYOSHI ,  HIROTA KOJI ,  UCHIYAMA MAMORU

IPC: H01J29/76

Abstract: PURPOSE:To obtain a good raster by providing a permanent magnet on a vertical axis of a deflecting yoke so as to form a magnetic field by which an electron beam is deflected vertically, and by providing a piece of a magnetic substance with which a magnetic pole of the permanent magnet is magnetically linked. CONSTITUTION:A pair of permanent magnets 23 are formed on a vertical axis Y of a deflecting yoke 19 in symmetry upward and downward to a horizontal axis X, so as to form a magnetic field by which an electron beam is deflected vertically. This is horizontally extended so that a magnetic pole of the permanent magnet 23 and one end are linked together magnetically, and the other end is receded from the vertical axis Y, while a piece of magnetic substance 24 is provided so that the other end is situated closer to the horizontal axis X than the magnetic pole of the permanent magnet 23. Pin cushion type distortion of the upper and lower parts of the display can be adjusted by a pin cushion type magnetic field that is generated by the magnetic pole of the permanent magnet 23, as well as the drop of the end of the distortion of high degree can be adjusted by the magnetic field generated by the end of the piece of the magnetic substance 24. A good raster can thus be obtained.

公开(公告)号：JPH0254835A

公开(公告)日：1990-02-23

申请号：JP20531388

申请日：1988-08-18

Applicant: TOSHIBA CORP

Inventor： TOKITA KIYOSHI ,  SONE TOSHIHISA ,  NAKAMURA MICHIO

IPC: H01J29/02

Abstract: PURPOSE:To improve the lightweight feature and shock resistance of a mask frame, increase the thickness of a shield body, and improve the magnetic shield effect by supporting a shadow mask and the inner magnetic shield body with separate means. CONSTITUTION:Elastic supporters 24 are fixed at four corners of the frame 23 of a shadow mask 20, stud pins 25 are fixed at corner sections of the skirt 1 of a panel in response to them, and the mask 20 is supported on the panel 2. On the other hand, a magnetic shield body 21 is cone-shaped and has notches to evade the supporters 24, elastic supporters 32 are fixed at the center of each side of a large-diameter section 32, pins 33 are provided for the supporters 32 on each side of the skirt 1 of the panel 2, and the large-diameter side is supported to cover the outside face of the frame 23. The supporter 32 is bent and formed with a stationary section 27, an elastic deformation section 29 and a coupling section 28, and a coupling hole for the pin 33 is provided on the coupling section 28. The mask frame 23 is made of a thin plate and the shadow mask 20 can be made lightweight according to this constitution, and the shield body 21 is made thick and the magnetic shield effect can be improved.

公开(公告)号：JPH01245689A

公开(公告)日：1989-09-29

申请号：JP7184188

申请日：1988-03-28

Applicant: TOSHIBA CORP

Inventor： TOKITA KIYOSHI ,  HASEGAWA TETSUO ,  INOUE MASAOI ,  NAKANE KAZUNORI

IPC: H01J29/00 ,  H04N9/29

Abstract: PURPOSE:To effectively and surely execute the demagnetization of a magnetic substance by impressing a commercial power source to a demagnetization coil and demagnetization after interrupting at least one of a vertical direction scanning circuit and a horizontal direction scanning circuit and making it off. CONSTITUTION:The demagnetization coil 34 is wound around the outside of a cone part 31 of a color picture tube, after interrupting either a vertical direction scanning circuit or a horizontal direction scanning circuit and making it off, a commercial power source is impressed to the demagnetization coil 34 and metallic parts in tube 26, 27 and 33 are demagnetized. Thus, since a deflecting circuit is made to be acted after completing the demagnetization, the effective and sure demagnetization in which the effect of the magnetic field of the deflecting circuit is given, can be executed extremely easily and picture quality in a practical condition can be evaluated qualifiedly.