TW392192B - CRT display device - Google Patents

Abstract

The present invention relates to a CRT display device with an objective of reducing undesirable irradiation through a simple and low cost product process. To achieve the above objective, the CRT1 is equipped with a conductive rubber adhered to the surface of an explosion-proofing belt 13 to form a rod-shape conductive piece 41. When a screw fastening lug 14 and a lug mounting part 24 are used to fasten the CRT1 and the enclosure shield 2, the conductive piece 41 is clamped between the surface of the explosion-proofing belt 13 and the surface on the inside of the enclosure shield 2 and under compression. As a result, the device is grounded not only through the lug 14 and the lug mounting part 24, but also through the conductive piece 41 to the explosion-proofing belt 13 and the enclosure shield 2.

Description

FIELD OF THE INVENTION The present invention relates to a CRT display device. The manufacturing process of a single manufacturing process is inexpensive, and it is particularly important to improve the inadvertent use of the conventional technology. As shown in FIG. 20, the main part of the CRT display device shields the screen 72 and the case 73. CRT71 is a signed skirt such as two = &… ^ 1 You scan the electronic line to display the device part by mistake. The external shielding screen 72 is a frame-shaped device part that covers the electromagnetic wave noise of unwanted radiation emitted from the CRni to cover the back surface of the CRni, and is made of a metal plate. The housing 73 is a part of a device that houses circuit parts constituting various electronic circuits including a power source. In order to suppress the radiation of the electromagnetic wave noise generated from the CRT 71 to the outside, the CRT 71 and the external shielding screen 72 are electrically connected via a connecting member 74, and the external shielding screen 72 and the casing 73 are electrically connected via a connecting member 75. The casing 73 is connected to the ground via a power cord 76, for example. The CRT71 is grounded via this path and earth. FIG. 21 is a partial cross-sectional view of a conventional CRT display device. The CRT 71 has a front panel 80 for displaying an image, and a back part 81 sealed inside the front panel 80 and sealed in the vacuum. Both the front panel 80 and the back portion 81 are made of glass. The CRT1 also has a glass tube that surrounds the front panel 80 and the back section 81 < a continuous upper surface, side and bottom sections, and an explosion-proof tape 82 made of a strip of metal, on the back to prevent the back section 81 from being charged The surface of the portion 81 is coated with carbon to form an exterior tube 83 and a coil 84 for deflecting an electron beam. In addition, the four corners of the periphery seen from the front of the glass tube formed by the front panel 80 and the back portion 81 are used to fix the CRT71 and the external shield to each other.

C: \ Program Files \ Patent \ 2108-2138-P.ptd page 4 5. Description of the invention (2) The ear 97 of the protruding part of the screen. These ears 97 are connected to the explosion-proof band 82. The four corners around the front face of the shielding screen 72 will be provided with the outward protrusions 98 facing the ears 97. Install by locking ear 97 and ear. P and screws 99 fix G71 and external shielding screen 72 to each other. 2 Tight ear 97 and ear mounting part 98 'at the same time to achieve the unintended light emission of the explosion-proof zone 82 and external wave radiation: high-frequency electromagnetic ΜΓΡΤ71 ^, 钿 耵 上 /, is not enough, you need to use the The grounding of multiple parts of CRT7 1 makes the potentials of the parts of CRn close to zero potential. Therefore, the explosion-proof zone 82 and the external shielding screen 72 are also electrically connected through multiple locations, electrical and Γ7. In addition, the pH of the exterior tube 83 and the external shielding screen 72 are electrically connected to the conductive members 89 provided at a plurality of locations. Therefore, by the parts being grounded through the conductive members 87, 89, and the external shielding screen 72, the radiation of electromagnetic wave noise generated in the CRT 71 to the outside is effectively suppressed. The conductive members 87, 89 are made of scale bronze plates with excellent elasticity, and are locked to the external shielding screen 72 by screws 90. The shape of the conductive member 8? Before installation is as shown in Fig. 22, and has a flat portion which is in surface contact with the external shielding screen 72 and an arc portion which is bent and raised from one end and bent into a curved surface with a small slope. A hole for penetrating the screw 90 is provided in the flat portion. The conductive member 87 is fixed to the external shielding screen 72, and then the CRT 71 is locked to the external shielding screen 72. As shown in FIG. 23, the conductive member 87 is pressed upward by the surface of the explosion-proof belt 82, and its curved portion is bent close to the external shielding screen 72. . Using the elastic restoring force accompanying the deformation, the conductive member 87 is pressed against the surface of the explosion-proof belt 82. Therefore, the electrical contact of the conductive member 87 to the surface of the explosion-proof tape 82 is achieved. As shown in FIG. 24, the conductive member 89 has a surface contact with the external shielding screen 72.

C: \ PrograinFiles \ patent \ 2i〇8-2138-P.ptd page 5

4 V. Description of the invention (3) _ Flat part and Ziqi-Chengrui ^ Branches. Shape again. The front end branching member 89 of the shaped part is shielded from the outside to provide a hole for penetrating the screw 90. When conductively locked, as shown in Figure 21-, in addition, the CRT71 and the external shielding screen 72 are pressed, and the pot-shaped electrical part 89 is elastically shielded by the external shielding screen 72 which occurs upward from the surface of the exterior tube 83. The conductive member 89 is pressed against the surface of the exterior tube 83 by using the deformation mi! Junction 9 is in electrical contact with the surface of the exterior tube 83.古 # 古 ί, CRT71 is a glass product, because of its shape, it will not be lost due to aging by using its elasticity. Ϊ́Electricity needs: to be flexible, and to grow in cities In terms of the materials, it can be said that phosphor green steel is very suitable. Η is:-copper bronze, which has a problem of high manufacturing costs. In addition, the guide 7 and 89 are installed on the external shielding screen 72 because of the need to use the assembly process. In addition, the CRT display device generally also has a coil, such as a shadow mask or a tension grid, which is not shown in the figure. When magnetic parts are magnetized, they are demagnetized coils. In the conventional CRT display device, various parts and conductive parts for mounting degaussing coils 8 and 8 are prepared separately. Figure 25 is a perspective view of a part of the conventional CRT display device equipped with degaussing wires. The screen is shielded along the outside. C: \ Program Files \ Patent \ 2108-2138-P.ptd on the upper part of the upper part of the 72. Page 6 V. Description of the invention (4) " The degaussing coil 91 is mounted on the side part to form a ring shape. The degaussing coil 91 is mounted on a plurality of portions of the plate portion above the external shielding screen 72. The support supports the degaussing coil 91. In addition, a part of the tie 91 is secured with a band 92 outside, and a cross-sectional view is shown in FIG. 26. The tape 96 is eliminated. However, the beam portion shields the screen 72 from damage and is fixed. The bottom part of the shielding screen 72 in the middle of the vibrating part is constructed with a felt 72 for external shielding. In FIG. 25, a bundle coil 91 is provided with a band 92, and the surrounding front part is tied to the external shielding to generate abnormal noise. The deflector part also has 9 2 binding wires 95 degaussing wires together. The front face of the back of the screen 72, the degaussing coil 9 1 is also in contact with the degaussing wire punch 9 3 at the band 9 2. In addition, the same installation is omitted in the figure Degaussing coil 9 1. The enlarged beam of part A and the ring buffer 9 3 of the insulating rubber ring 9 1 and its surroundings are enlarged. Therefore, the degaussing coil 91 will not be affected by the degaussing coil 9 1 A front view of the 27-series support member 94. The support member 94 has a head which is snap-fitted and can be fixed to a hole provided on the plate portion of the external shielding screen 7 2 and sandwiches the buffer member 9 surrounding the degaussing coil 9 1 with elastic restoring force. 3 feet and the crotch connecting the above parts, as shown in Figure 2 The head is fixed to the external shielding screen 72 and the foot is sandwiched with the degaussing coil 91 to support the degaussing coil 91 on the external shading screen 72. As shown above, the conventional CRT display device is used to fix the degaussing coil. The strap 92 of the 91 and the support member 94 are separately prepared with the parts for grounding the CRT 71. Therefore, in this sense, the assembly process of the CRT display device becomes complicated, and the manufacturing cost becomes expensive. SUMMARY OF THE INVENTION

c: \ ProgramFiles \ Patent \ 2108-2138-P.ptd Page 7 V. Description of the invention (5) The invention of the invention is to solve the above problems and it is a solution that can be cheaply realized through a simple manufacturing process. CRT display device. -The knowledge of the agency includes the first form of the CRT display device of the present invention to achieve the purpose of Λ, a conductive part on the ground and the surname surface; an external shielding screen, which is fixedly connected to the CRT, and surrounds the The conductive part of the conductive part of the CRT; and the conductive part 'connects the conductive part with the external inverse age \ ν shielding screen electric lice; the conductive part T is composed of an organic trowel knife material, which is less The surface has a conductive part knife, and the elastic part is used to press the conductive part. ::: The second form of the CRT display device is in the crt of the 扪 form. The conductive part should not be sandwiched between the conductive part and the external shielding screen, and the conductive part and the guided red screen t shield screen. The surface contact members face each other. The third form of the CRT display device invented by the conductive member and the outer cat- is in the CRT device of the first form. The conductive member forms a gap, and the external shielding screen The edge of 2 is sandwiched by the notch, and the conductive part is pressed by the conductive part and the external shielding screen. The material and electrical part are in surface contact with each other, and the material and electrical part and the external shielding screen are in surface contact with each other. The fourth form of the CRT display device of the present invention is a WRT form of the CRT device. It also has a front shading screen, a gap is formed in the conductive member, an edge portion of the evening screen is inserted into the gap, and the conductive member Pressed down by the conductive portion and the other shielding screen, the conductive portion and the conductive member are in surface contact with each other, and the conductive member and the external shielding screen are in surface contact with each other. The fifth form of the CRT display device of the present invention is rai C: \ ProgramFiles \ Patent \ 2108-2138 ~ P.ptd on page 2 to 4. Page 5 of the invention (6) CRT display device of various forms The conductive member is adhered to the conductive portion. A sixth aspect of the CRT display device of the present invention is a CRT display device of one of the second to fourth aspects, and further includes a degaussing coil 55, and a groove is formed in the conductive member, and the degaussing coil is supported by the groove. The seventh aspect of the CRT display device of the present invention is the CRT display device of one of the second to fourth aspects, and the conductive member has a bent portion 'in its shape to reduce rigidity. An eighth aspect of the CRT display device of the present invention is the crt display device of the first aspect. The conductive member 51 is connected at one end and branched into multiple branched plates at the other end, and the one end is fixed to the For the external shielding screen, the branches are elastically bent and press the conductive part. A ninth aspect of the CRT display device of the present invention is the CRT display device of the first aspect. The organic polymer material is a conductive rubber. The tenth aspect of the CRT display device of the present invention is the CRT display device of the first aspect, and the organic polymer material is a conductive resin. The eleventh aspect of the CRT display device of the present invention is the iRTth CRT display device, the organic polymer material is a resin, and the resin conductor is surface-treated. The twelfth aspect of the CRT display device of the present invention is the CRT display device of the first aspect. The organic polymer material is conductive and has a sponge-like porous structure. The 13th aspect of the CRT display device of the present invention is the CRT display device of the first aspect. The organic polymer material includes a core portion 61 having a sponge-like porous structure, and a conductive rubber and surrounding the core portion. Surrounded

C: \ PrOgram Files \ Patent \ 2108-2I38-P.ptd Page 9 V. Description of Invention (7) Section 62. If the first form of the CRT display device according to the present invention is used, 'a conductive member made of an organic polymer material that has conductivity at least on the surface is used to achieve the suppression of unwanted radiation. Electrical connection between the screens. In other words, the use of inexpensive organic polymer materials that are easy to form without using materials such as phosphor bronze for electrical connection can save energy and reduce manufacturing costs. In addition, the conductive portion is pressed by the elastic restoring force, and is connected. There is a size error between T and the external shielding screen, so it will not hinder the electrical connection. Using the second form of the CRT display device of the present invention, the conductive shielding is sandwiched and pressed by the conductive shielding screen. Therefore, the space between the conductive members can be simplified. Junction 2 and: The conductive member is simply installed on the conductive member and the external shielding screen, and the manufacturing cost of the snow resistance device is low. In addition, because the face contact is used, the effect of suppressing unwanted radiation is further enhanced. The third form of the display clamped second display device ’becomes larger due to external shielding: the contact area between the conductive part and the external shielding screen. The movement of the circle ::::; == demagnetizing line of the CRT display device. The vibration of the shielding screen can be suppressed by vibration. The conductive part is shielded between the conductive part and the external shielding screen, and the conductive part and the conductive surface are electrically connected. s τ Shou Dian also has a snow guide 铕 L. Therefore, the shape of the conductive parts can be simplified, and the conductive parts can be installed in the conductive U shape early, and the manufacturing cost of the device can be saved. As a result, low-resistance electricity is achieved through surface contact.

Ptd page ι〇 C: \ Program Fi1es \ Patent \ 2108-2138-P. V. Description of the Invention (8) Qi Lian Li Li suppresses the unwanted radiation. The screen is clamped into the gap of the conductive part, and then the shape is t. Due to the external shielding dagger: the two conductive parts are pressed by the conductive part and the front shading screen, and the contact resistance between the shielding screens is reduced to achieve better 'suppression. Generally accompanied by the degaussing line of the CRT display device = the external shielding screen where the action occurs, which can suppress the line caused by vibration

, 迸: Plexus can simplify the shape of the conductive part, and it can simply install the conductive part: between the conductive part and the external shielding screen. As a result, ... the device; because the low-resistance electrical connection is also achieved between the conductive part and the conductive member through surface contact, and the suppression effect of unwanted radiation is further improved. If the fifth form of the CRT display device of the present invention is used because the conductive member is adhered to the conductive body, the assembly process of locking the CRT and the external shielding screen like sandwiching the conductive member is improved to improve the assembly workability. As a result, manufacturing costs are saved even more. If the sixth form of the CRT display device of the present invention is used, it is not necessary to separately prepare parts for supporting the degaussing coil because the conductive member supports the degaussing coil. Moreover, since the degaussing coil is supported by the groove provided in the conductive member, the assembling process for fixing the degaussing wire coil becomes simple. Therefore, the manufacturing cost of a CRT display device having a degaussing coil is saved. If the seventh aspect of the CRT display device of the present invention is used, since the conductive member has a bent portion in order to reduce rigidity, a rubber or resin having high rigidity can be used as a material suitable for the conductive member. If the eighth form of the CRT display device of the present invention is used,

C: \ ProgramFiles \ Patent \ 2108-2138-P.ptd page 11

& In the external shielding session _, χ * 〇 * X V. The other branches of the twilight plexiform screen are elastically bent and pressed against the conductive '' to form an electrical connection between the conductive portion and the external shielding screen. Ueda Masaru realizes electrical connection with a single structure. In addition, because the guide system is more practical, it is cheap and easy to form because it is composed of molecular materials. Therefore, it is the manufacturing cost of 4 devices. It is practically suitable for use. Right, the ninth form of the CRT display device of the present invention is used. The organic polymer material, which is the ^ constituent element of the conductive member, is a conductive rubber. It is easy to form, and has high elasticity, which effectively saves the device manufacturing. At the same time get a good electrical connection. The right uses the tenth form of the CRT display device of the present invention. The organic polymer material, which is a component of the conductive member- $, is a conductive resin, which is easy to form because of its convenience, which effectively saves the manufacturing cost of the device. In addition, although the general rigidity is high, the rigidity can be reduced and the elasticity can be improved by adopting a shape having a bent portion or a plate-like shape that reduces rigidity, so that a good gas connection can be achieved. If the eleventh form of the CRT display device according to the present invention is used, the organic polymer material that is the essential constituent element of the conductive member is a resin that has been surface-treated with a conductor. Save device manufacturing costs. In addition, although the rigidity is generally high, by adopting a shape having a bent portion or a plate-like shape that weakens the rigidity, the rigidity can be reduced and the elasticity can be raised, so that a good electrical connection can be achieved. If the 12th form of the CRT display arrangement of the present invention is used, the essential constituent elements of the conductive member are conductive organic polymer materials having a porous structure with a sponge-like shape, which are cheap, easy to form, and flexible, and effectively C : \ ProgramFiles \ Patent \ 2108-2138-P.ptd page 12 'Instructions of the invention (10) Save the manufacturing cost of the device and get good results at the same time * Electric intercept 4 J & k η Because the conductive member has a porous structure' Only on the surface of the object; and the high-sleeve current flowing on the garment surface has low resistance, which is especially effective for the suppression of unwanted radiation. frequency

According to the thirteenth aspect of the CRT display device of the present invention, the conductive member includes a core portion made of an organic polymer material having a sponge-like porous structure, and a surrounding portion made of conductive rubber surrounding the core portion. Because = the rear conductive part, because it is easy to form, and it is cheaper than when using conductive pads as a whole, it is also flexible, which effectively saves the manufacturing cost of the device ′ P to a good electrical connection. Invention The purpose, features, situation and advantages will become clearer through the following detailed description and attached drawings'. Figures 1 and 2 are exploded perspective views of the device of Example 1 ° Figure 3 is a cross-sectional view of the device of Example 1 Figure 4 is an enlarged perspective view of a part of the device of Example 1 Figure 5 is an embodiment Partial view of the device of Figure 1 Figure 6 is a partially enlarged perspective view of another example of the device of Embodiment 1 Figure 7 is a standing view of the conductive member of Example 2. Fig. 8 is a partial plan view of the device of the second embodiment ° Fig. 9 is a partial view of the device of the third embodiment ® ° Fig. 10 is a perspective view of the conductive member of the third embodiment. FIG. 11 is a perspective view of another conductive member of Embodiment 3. FIG. FIG. 12 is a partial brake surface view of the device of Embodiment 4. FIG. FIG. 13 is a perspective view of a conductive member of Embodiment 4. FIG.

C: \ Program FiIes \ Patent \ 2108-2138-P.ptd

FIG. 14 is a partial perspective view of the device of Embodiment 5. FIG. Fig. 15 is a partial cross-sectional view of the device of the fifth embodiment. Fig. 16 is a partial cross-sectional view of the device of the sixth embodiment. FIG. 17 is an exploded perspective view of a conductive member of Embodiment 6. FIG. FIG. 18 is an exploded perspective view of a conductive member of Embodiment 6. FIG. FIG. 19 is a front view of the conductive member of Embodiment 6. FIG. FIG. 20 is an explanatory diagram showing a ground path of a conventional device. Fig. 21 is a partial sectional view of a conventional device. Fig. 22 is a perspective view of a conventional conductive member. Fig. 23 is a sectional view showing a state of use of a conventional conductive member. FIG. 24 is a perspective view of another conventional conductive member. Fig. 25 is a partial perspective view of a conventional device. Fig. 26 is a cross-sectional view showing the mounting state of a conventional degaussing coil. Fig. 27 is a front view of a supporting member of a conventional degaussing coil. BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 FIG. 1 and FIG. 2 are perspective views showing a main part of the CRT display device of Embodiment 1 in an exploded state. Fig. 1 is a view of the device from an oblique front, and Fig. 2 is a view of the device from an oblique rear. The main part of the CRT display device includes a CRT 1 and an external shielding screen 2. The CRT1 and the CRT71 of the conventional device-like 'are part of the device by scanning the telegraph image. External shielding screen 2 and a deep 4 screen 72 other than the conventional device. Also, it is a frame-shaped device that covers the back of CRT1 in order to shield the non-secured radiation emitted from CRT1. It covers the back of CRT1. Guided by

V. Description of the invention (12) --- Board structure of electric body. For this conductor, iron such as steel is preferably selected as the parent metal. The external shielding screen 2 also has the function of preventing the influence of the geomagnetism on the CRT1i. Although omitted from the figure, like the case 73 of the conventional device, it also has a case, and the CRT1 and the ground are grounded through the same path as in FIG. 20. The basic structure of CRT1 and the CRT7i of the conventional device are the same. That is, the CRT 1 has a front panel n for displaying an image, and a back portion 12 in which the interior and the front panel are sealed in a vacuum together. Both the front panel Η and the back portion 12 are made of glass. The CRT 1 also has an explosion-proof tape (conducting section) composed of a strip-shaped metal that continuously surrounds the upper, side, and lower sections of a glass tube composed of a front panel and a back section 12 and is formed to prevent the back section. 12 is charged and a tube (conductive part) and a coil 16 for biasing the electron wire are mounted on the surface of the back part 12 coated with carbon. In addition, ears (iUg) 14 of plate-like protrusions for fixing CRn and the external shielding screen 2 to each other are provided at four corners of the periphery as seen from the front surface of the glass tube formed by the front panel 11 and the back surface 2. These ears 14 and explosion-proof bands. link. On the other hand, the four corners around the front face of the external shielding screen 2 will be provided with ear mounting portions 24 protruding outward so as to face the ears 14. As shown above, the external shielding screen 2 is formed into a frame shape as a whole, and has a rectangular portion 21 composed of an approximately rectangular frame opened at the same width in front and rear, and connected to the rear of the rectangular portion 21 and narrowed toward the rear.之 斜 部 22。 The inclined portion 22. With this structure, the outer shield screen 2 can cover the back surface portion 12 of the Crti with a smaller diameter toward the rear under the surface close to the back surface portion 12. A plate portion is formed on the rectangular portion 21, and the plate portion is cut into a strip shape from the front edge to the rear.

C: \ Program Files \ Patent \ 2108-2138-P.ptd page 15 、 Inventory description (13) Cut the lower part 25. These cut portions 25 are used to fix the degaussing wires as shown in the back circle. Fig. 3 is a cross-sectional view showing the state in which the CRT1 is fixed to the outside ^, as shown in Fig. 3, the ears are locked by screws 35. It is fixed to the external shielding screen 2. This eye ^ and ear mounting portion 24, CRT1 CRT1 Λν; " By locking ear 14 and ear mounting 4 ^ both sides of the exterior. The electrical two between the two shielding screens "may" also simultaneously realize the explosion-proof belt 13 and externally ground a plurality of parts of the gallium so that ==; the connection 2 is to be installed by M Ming ^ The CRT display device of the embodiment is as follows Say no, the features used to distinguish CRn from the conventional device are different. Special features on k ... Go back to Figure 1! The CM display device of this embodiment preferably has a front shading screen 3. Just The light-shielding screen 3 has a frame body portion 31 formed of a substantially rectangular frame that is opened at the same width in front and rear, and a bottom portion 32 connected to the front of the frame-body portion 31 and having an opening portion 33 in the center. With such a structure, the upper surface, side surface, and lower surface of the glass tube composed of the front panel 11 and the back surface 12 of the CRT 1 and the peripheral portion of the front surface of the front panel 11 can be covered by the user of the CRT display device. The opening 33 appreciates or observes the image displayed on the front panel 11. Next, the characteristic structure for grounding a plurality of parts of the CRT1 will be described. Fig. 4 is an enlarged perspective view of a part of the CRT display device of this embodiment. This device is explosion-proof The surface of the belt 13 is fixed by a rod-shaped guide Rubber (conductive rubber

C: \ Program Files \ patent \ 21〇8-2138-P.ptd page 16 V. Description of the invention (14) --- conductive member 41. Fig. 4 shows an example in which the conductive member 41 is mounted on the upper surface of the CRT 1. However, the conductive member 41 may be the same on the lower surface or a pair of side surfaces. The shape of the clothing conductive member 41 is shown in Fig. 4, and is preferably a corner post, and is formed in an elongated shape, covering from one end to the other end along the extension direction of the explosion-proof belt 13. The conductive member 41 is preferably adhered to the surface of the explosion-proof tape 13 by using a conductive adhesive material such as an adhesive. More preferably, a double-sided adhesive-type conductive tape is inserted between the conductive member 41 and the explosion-proof tape 13 to be adhered. In addition, the conductive member 41 can also be fixed by sticking a double-sided adhesive tape only to a portion below the conductive member 41, and the conductive member 41 can directly contact the surface of the explosion-proof tape 13 through the lower portion not covered by the tape. In this case, a non-conductive tape may be used as the adhesive tape. As shown in the cross-sectional view of FIG. 5, when the CRT 1 and the external shielding screen 2 are fixed to each other, the conductive member 41 is inflamed by the rectangular portion 21 and the explosion-proof belt 3 of the external shielding screen 2 and is compressed by a certain degree of compression . In addition, the conductive member 41 is different from the conductive member 87 of Xiyou, and the explosion-proof tape 13 and the external shielding screen 2 are in surface contact with each other. Therefore, the electrical connection of the explosion-proof tape 13, the conductive member 41, and the external shielding screen 2 is good. That is, the potential of the explosion-proof band 13 can be made close to zero potential in a wide range, and a good electrical grounding of the explosion-proof band 13 can be achieved. In addition, there is a dimensional error in the CRT1 or the external shielding screen 2. This dimensional error is also absorbed by the elasticity of the conductive member 41 ', and does not prevent the electrical connection between the CRT1 and the external shielding screen 2 through the conductive member 41i. In addition, unlike the conventional device, the screw 90 'is not required, and the rod-shaped conductive member 41 is adhered to the explosion-proof tape 13 with an adhesive, and the conductive member 41 is installed. Therefore, it is in phase with the conventional conductive member 87.

Compared, the assembly process is simplified, and the workability of assembly is improved. That is, they can be assembled efficiently. Further, since the conductive member 41 is made of conductive rubber, it is cheaper than the conventional conductive member 87 made of phosphor bronze or the like. In addition, the operation of molding the conductive rubber into a rod-shaped conductive member can be performed extremely simply. Therefore, in addition to the fact that the conductive member 41 can be manufactured inexpensively, it is also combined with the simplification of the assembly process of the device, which saves the manufacturing cost of the device. Instead of the conductive member 41, as shown in FIG. 6, a block-shaped conductive member 42 may be arranged on the surface of the explosion-proof zone 13 in part. The conductive member 42 is made of conductive rubber like the conductive member 41, but is not as long as one end to the other end of the explosion-proof tape 13, and is configured to cover the surface of the explosion-proof tape 13 in sections along its extension direction. FIG. 6 shows an example in which the two ends of the face and the central part of the upper part of the CRT 1 are arranged at three places. The cross-sectional shape of the conductive member 42 is the same as that of the conductive member 41, and is preferably rectangular. Also, the conductive member 42 and the conductive member 41 are preferably fixed to the surface of the explosion-proof tape 13 with a conductive adhesive. By using the conductive member 42 constructed and installed as described above, the borrower can also achieve good grounding of the explosion-proof tape 13 and save manufacturing costs, as well as the CRT display device using the conductive member 41. However, in terms of the effect of grounding, the conductive member 41 that can widely cover the surface of the explosion-proof tape 13 is more excellent. Therefore, it can be said that the conductive member 41 is preferably used in the case where the intensity of the unwanted radiation emitted from the CRT1 is strong. In addition, the conductive members 41 and 42 may also be fixed as follows, instead of being fixed to the surface of the explosion-proof belt 13 by adhesion. That is, a matching hole may be provided in the rectangular portion 21 of the external shielding screen 2 and may be provided in the head of the conductive member 41.

C: \ ProgramFiles \ Patent \ 2108-2138-P_ptd page 18

V. Description of the invention (16) " A protrusion for compliance, by engaging the protrusion with the hole, the conductive member 41 is fixed to the 21 side. In this case, unlike the conventional device, in the assembly process of the device, it is not necessary to fix the complicated shoes of the conductive member 87 with the screw 90, and the manufacturing cost is saved. On the material of the conductive parts 4 1 and 4 2, you can also use conductive brocade (conductive organic polymer material with a sponge-like porous structure) instead of conductive rubber (conductive rubber ). The phenomenon that the current induced by the high-frequency electromagnetic waves emitted by unwanted radiation flows only on the surface of the conductor is widely known as the "skin effect". Conductive sponges have a large surface area because of their sponge-like structure. The grounding conductor that suppresses unwanted radiation has the same effect as metal. In addition, the same reduction effect can be obtained in the manufacturing cost of the device as in the case of using conductive rubber. Example 2 Conductive rubber generally has a higher rigidity and conductivity. Therefore, since the conductive member 4 ^ or the conductive member 42 uses a conductive rubber with high conductivity, the rigidity may be too high. As shown in FIG. 7, a section shape that moderates rigidity may be used instead of a rod or block. The cross-sectional shape of the conductive member 43 shown in FIG. 7 with an “S” shape is shown in the sectional view of FIG. 8. When the CRT 1 and the external shielding screen 2 are fixed to each other, the conductive member 43 is explosion-proofed. 13 and the external shielding screen 2 sandwich and press the 'S' shaped cross-section shape if it is completely crushed into a rod or block shape. Even if it is crushed into this shape, the original shape is as shown in Figure 7. The "S" shape relaxes the elastic restoring force of the conductive member 43. Therefore, although the conductive member 43 uses a highly rigid conductive rubber, it can be clamped in

C: \ ProgramFiles \ Patent \ 2108-2138-P.ptd page 19 5. Description of the invention (17) The conductive member 43 smoothly and smoothly locks the CRT1 and the external shielding screen 2 without difficulty. That is, by using the conductive member 43, the electrical grounding of the explosion-proof zone 13 and the workability in the assembly process can be improved and improved. Furthermore, by adopting the shape of the conductive member 43, a conductive resin (conductive resin: conductive plastic) which is less expensive than a conductive rubber can also be used. The conductive resin has higher rigidity than the conductive rubber, but by using the shape of the conductive member 43, it achieves a good electrical ground without impairing the workability of the assembly process. In addition, as the material of the conductive member 43, a resin that has been surface-treated (conductive) with a conductor may be used, for example, a non-conductive resin (plastic) is vapor-deposited on the surface. This can further suppress manufacturing costs. Other examples of the conductor-treated resin are, for example, a resin plated with gold on the surface or a resin with a conductive tape adhered on the surface. In addition, the cross-sectional shape of the conductive member 43 does not need to be limited to an “S” shape, as long as it is a shape having a curved portion, such as an “U” shape, an “M” shape, and the like. Embodiment 3 FIG. 9 is a cross-sectional view of a CRT display device according to Embodiment 3. FIG. In this device, there is a loss between the explosion-proof zone 13 and the external shielding screen 2. The conductive member 44 is made of the same material as the conductive member 41 or 42. In addition, any shape such as a rod shape like the conductive member 4 or a block shape like the conductive member 42 may be formed. FIG. 10 is a salute diagram showing an example in which a block-shaped conductive member 44 is formed. As shown in FIG. 10, the conductive member 44 is formed with a notch having a "V" shape in a cross section, for example, horizontally. Returning to Fig. 9, the front edge of the rectangular portion 21 of the external shielding screen 2 is inserted into the notch of the conductive member 44. And ’outer screen 2 and

C: \ ProgramFiles \ Patent \ 2108-2138-P.ptd page 20 V. Description of the invention (18) Examples 1 and 2—The sample is fixed to CRT1 in the rectangular part 2 in the same way. With this, " ::: if the conductive member 44 is pressed downward and moved. (The result of reducing the restriction of the rectangular portion 21 to the lower and upper sides is more effective in suppressing the vibrations associated with magnetic cleaning, and the external shielding screen 2 which can suppress the vibration of the external shielding screen 2 1 w Ai Li touches the conductive 侔 44, f The electrical ground of CRT1 with low contact between the external shielding screen 2 and the conductive member 44 is good. As shown in the second figure, the front shading screen 3 can also be installed on its frame body 31 ::: Push Press the head of the conductive member 44. By using &, the vibration of the external shielding screen 2 can be more effectively suppressed. Moreover, since the upper and lower surfaces of the external shielding screen 2 are in contact with the conductive member 44 under pressure, the external shielding screen 2 and the conductivity are further reduced. The contact resistance between the pieces 44. As a result, the electrical connection between the CRT1, the conductive tilt and the external shielding screen 2 can be made better. In addition, when the front shielding screen 3 pushes the conductive member 44, the external shielding screen 2 may not be rectangular. The lower surface of the portion 21 may be fixed to CRn as if the conductive member 44 is pressed downward. As shown in FIG. 9, in the device of this embodiment, another is also sandwiched between the exterior tube 15 and the inclined portion 22. The conductive member 4 5. The conductive member 4 5 is preferably provided at a plurality of locations. ′ FIG. 11 shows the conductive member 45 The conductive member μ shown in FIG. 11 has a cross-sectional shape bent into an “M” shape. The conductive member 45 is the same as the conductive member 43 and is made of a resin that has been surface-treated with a conductive rubber, a conductive resin, or a conductor. Moreover, the conductive member 45 has a curved carrier surface shape,

V. Description of the invention (19) The rigidity is low, and the elastic restoring force is appropriately sized, so that the outer tube 15 and the inclined portion 22 can be used for pressing. Then, by inserting the conductive conductive member 45, not only the explosion-proof tape 13 but also the exterior tube 15 is grounded. Also, "the conductive member 45 is different from the conventional conductive member 89", and the exterior tube 15 and the external shielding screen 2 are in surface contact with each other. Therefore, the electrical connection between the exterior tube 15, the conductive member 45, and the external shielding screen 2 is good. Thereby, a good electrical grounding of the exterior pipe 15 is achieved. In addition, since the conductive member 45 is cheaper than the conductive member 89 and the assembly workability is good, the manufacturing cost is also the same as that of the conductive members 41 to 44. Embodiment 4 FIG. 12 is a sectional view of a CRT display device according to Embodiment 4. FIG. In this device, instead of the conductive member 45 of FIG. 9, a conductive member 51 is used to electrically connect the exterior tube 15 and the external shielding screen 2. The conductive member 51 is preferably a plate member 'made of a conductive resin, and the inclined portion 22 of the screen 2 is locked with the screw 52 to the outside. The conductive member 51 is preferably provided at a plurality of locations.立体 13 is a perspective view of the conductive member 51. As shown in FIG. 13, the conductive member 51 has a shape similar to that of the conventional conductive member 89. That is, the conductive member 51 has a flat portion which is in surface contact with the inclined portion 22 of the outer shielding screen 2 and a fork-shaped portion which is curved and extended from one end thereof. The front end of the forked portion branches into multiple branches. A hole for penetrating the screw 52 is provided in the flat portion. ° The conductive member 51 is fixed to the external shielding screen 2. In addition, when the CRT1 and the external shielding screen 2 are locked, as shown in FIG. 12, the conductive member 51 is pressed upward by the surface of the exterior tube 15 and is bent branch by branch. . The conductive member 51 presses the surface of the exterior tube 15 by the elastic restoring force accompanying the bending. As a result, each

C: \ ProgramFiles \ Patent \ 2108-2138-P.ptd page 22 5. Description of the invention (20) The branch realizes the electrical grounding of the exterior pipe 15. The conductive member 89 used is different because it can be cheaper than the conventional device. In addition, the thickness of the conductive member 51 is set to the size of the surface of the exterior tube 15. A conductive resin may be used as a material of the conductive member 51 instead of the conductive resin. Embodiment 5 Fig. 14 shows a degaussing coil 55 as shown in the apparatus of Embodiment 5 in which a degaussing coil is mounted. In Fig. 14, a degaussing coil 55 is installed in the same manner even though the face is saved. That is, magnetic zeros such as a shadow mask inside the CRT 1 In this embodiment, the degaussing coil 55 is cut by a pair of lower portions 25, and a part of the decoil coils 5 is located below the rectangular portion 21. Further, the portions located above the rectangular portion 21 and the potential pieces 56, 57 are supported. Furthermore, the structure of the conductive member 51 and the conventionally-formed conductive resin can save manufacturing costs. It is thicker than phosphor bronze with appropriate strength by elastic deformation. Alternatively, conductive rubber may be used for the non-conductive surface-treated body. A perspective view of the external shielding screen 2. In general, a CRT display device has a bit of "under the external shielding screen 2" and a pair of degaussing coils 55, which are demagnetized. It is provided above the rectangular portion 21 of the external shielding screen 2 and the remaining "degaussing coil 55" shown in FIG. 15 lies in the lower part. The electrical connection part has the same shape as that of the conductive member 44 shown in FIG. 9 except that a structure for sandwiching the degaussing coil 55 is added. That is, a horizontal cutout for sandwiching the rectangular portion 21 is arranged on one wall surface of the conductive member 56, and a horizontal level for holding and supporting the degaussing coil 55 is formed horizontally above the same.

C: \ Program Files \ Patent \ 2108-2138-P.ptd page 23

The conductive part is connected to the demagnetizing line 45 and the magnetic coil 55 connected to it is conductive, and the manufacturing process is the same as that of the coil 55. The coil 55 is self-assembled. That is, the protrusion is formed flat. The conductive piece 44 can be used to make parts such as full-time and conventional devices. The supporting member 9 4 is a mixed process, and is made lower than the member 57. The outer tube 15 and the members 56 and 57 having a groove having a horizontal portion of water in the form of a structure in the shape and the ring 55 can be used. Conductive parts 44, 45-the work required for parts 56, 57. In addition, it is not necessary to eliminate the manufacturing cost of the complex device required for the manufacture of the reinstallation device in the manufacturing process of the strap 92 and the support member 94. The electrical connection between the screen 2 and the conductive member 57 is additionally added to conduct electricity. It is used to connect and support the same material structure of 5 and 5 as a whole. Therefore, the conductive members 44, 45 need to support the demagnetization and then suspend it with the belt 92 to improve the workability of assembly. Knowing the device. FIG. 16 is a sectional view of a CRT display device of Embodiment 6. FIG. The device inserts a conductive member 60 between the explosion-proof belt 13 and the external shielding screen 2. The conductive member 60 may also be formed in any shape of a rod shape shown in the conductive member 41 in FIG. 4 or a block shape shown in the conductive member 42 in FIG. 6. FIG. 17 to FIG. 19 are perspective views of an example in which a block-shaped conductive member 60 is formed. As shown in these figures, the conductive member 60 has a cylindrical core portion 61 made of a sponge (organic polymer material having a sponge-like porous structure), and a surrounding portion 62 made of a plate-shaped conductive rubber around its side. . The surrounding portion 62 is preferably adhered to the core portion 61 with an adhesive. In addition, the conductive member 60 is preferably adhered to the surface of the explosion-proof zone 13 in the same manner as the conductive member 41 and the like.

C: \ ProgramFiles \ Patent \ 2108-2138-P.ptd page 24 5 'Description of the invention (22) Returning to FIG. 16, when the CRT1 and the external shielding screen 2 are fixed to each other, the conductive member 60 is externally shielded by the screen 2 The rectangular portion 21 and the explosion-proof band 13 are sandwiched, and are compressed by a certain degree of compressive force. As a result, although the conductive member 60 is cylindrical in shape, it contacts the explosion-proof tape 3 and the external shielding screen 2 in the same manner as the conductive member 4 and the like. Thus, a good electrical grounding of the explosion-proof zone 13 is achieved. Also, although conductive rubber is cheaper than phosphor bronze, it is more expensive than ordinary rubber. In the conductive member 60, only the surrounding portion 62 uses a relatively expensive conductive rubber ' to reduce its use amount, and the remaining core portion 61 uses a cheap sponge to save costs. That is, the 'conductive member 60 maintains its elasticity by using an inexpensive sponge, and maintains its electrical conductivity by winding it around the side surface = surrounding portion 62, and saves its manufacturing cost while maintaining good electrical and mechanical properties. In addition, by using the conductive member 60, the simplification of the assembly process and the improvement of the assembly workability are the same as in the case of using the conductive member 4 丨. The conductive member 60 can be manufactured cheaply with the conductive member 60 itself, saving the manufacturing cost of the device as described above As shown, the conductive part of the present invention is a part that electrically connects the external shielding screen and the crt 2 electrical part, which is essentially composed of an organic polymer material, and presses the conductive part of the CRT with its elastic restoring force. The conductive part (that is, the overall system conductivity) has at least ί :: 分之 零 # on its surface. The rubbers, resins (plastics), and the sponges shown above are contained in organic polymer materials. It is said that: 1. The present invention, but the above description is in all situations: the present invention is not limited to this. 4 Without exceeding the scope of the present invention, countless variations can be thought of.

Claims (1)

Six's please special ® — — 1 · A CRT display device, including: CRT (l) 'has a conductive part (13, 15) on the surface; an external shielding screen (2), fixedly connected to the CRT, and surrounded A conductive body that holds the conductive part of the CR; and a conductive part (41 ~ 45'51, 56, 57, 60) that electrically connects the conductive part and the external shielding screen to each other; the conductive part is substantially made of organic high It is made of molecular material, and at least its surface is “conductive.” P points, and the conductive part is pressed by its elastic restoring force. Μ 2. #CRT display device with the scope of patent application No. 1, which is conductive 4 and 5 (5, 51, 6 snow, i7, 60) are in surface contact with each other by the conductive portion and the external shielding screen and the shielding conductive member, and the edge portion of the "piece" is cut into 57 by the gap and the shielding screen is reversed. The conductive part is pressed by the conductive part and the outer part, and the conductive part and the conductive part and the external shielding screen are in surface contact with each other. _If the conductive display 4 is an m display device in the scope of the patent application, the light-shielding screen (3) In the conductive member (4bu 45, 51, 56, 57; Lei ::: bu! The edge part is inserted into the gap, and the conductive part: ΠΐΓϊίΐ The central part of the screen is pressed down, and the conductive part and the conductive part and the external shielding screen are in surface contact with each other. 5. If the CRT of the patent application is No. 2, 3 or 4 It is dry mounted fφ The conductive part is adhered to the conductive part. The display device, among which C: \ Prograia Files \ Patent \ 2108-2l38-P. Ptd ^ 2〇Τ 6. Application for patent i —------ ] 6_ If the CRT display device with the scope of patent application No. 2, 3 or 4, the basin also has a degaussing coil (55), a groove is formed in the conductive member, and the degaussing coil is supported by the groove. The crt display device of item 2, 3 or 4 wherein the V electric component (43, 45, 56, 57) has a bent portion in its shape to reduce the rigidity. 8. If the CRT display device of item 1 of the patent application scope, The conductive member (51) is a plate connected at one end and branched into multiple branches at the other end. The one end is fixed to the external shielding screen, and the multiple branches are elastically bent and press the conductive portion. ^ 9. For example, the CRT display device of the first patent application range, wherein the organic polymer material is a conductive rubber 10. The CRT display device according to item 1 of the patent application, wherein the organic polymer material is a conductive resin. 11. The CRT display device according to item 1 of the patent application, wherein the organic polymer material is a resin, The resin conductor is surface-treated. 12. For example, the CRT display device of the first patent application range, wherein the organic polymer material is conductive and has a sponge-like porous structure. 13. For example, the CRT display device of the scope of patent application, wherein the organic polymer material includes a core portion (61) having a sponge-like porous structure and a surrounding portion made of conductive rubber and surrounding the core portion ( 62). C: \ ProgramFUes \ Patent \ 2108-2138-P.ptd page 27