JPS54144820A - Color receiving tube unit - Google Patents

Color receiving tube unit

Info

Publication number
JPS54144820A
JPS54144820A JP5315578A JP5315578A JPS54144820A JP S54144820 A JPS54144820 A JP S54144820A JP 5315578 A JP5315578 A JP 5315578A JP 5315578 A JP5315578 A JP 5315578A JP S54144820 A JPS54144820 A JP S54144820A
Authority
JP
Japan
Prior art keywords
magnetic shield
along
opening
circumference
demagnetizing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5315578A
Other languages
Japanese (ja)
Inventor
Yoshifumi Oshima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Priority to JP5315578A priority Critical patent/JPS54144820A/en
Publication of JPS54144820A publication Critical patent/JPS54144820A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/003—Arrangements for eliminating unwanted electromagnetic effects, e.g. demagnetisation arrangements, shielding coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/0007—Elimination of unwanted or stray electromagnetic effects
    • H01J2229/0046—Preventing or cancelling fields within the enclosure
    • H01J2229/0053—Demagnetisation

Abstract

PURPOSE:To enable to obtain the demagnetizing effect with good efficiency, by forming the demagnetizing coil with the short side part and long side part of the magnetic shield and with the circumference part of the opening for neck inside the magnetic shield. CONSTITUTION:The magnetic shield 3 of funnel shape which is magnetically coupled with the shadow mask 9 is coaxially placed with the glass package, and the demagnetizing coil 4 is wound at the external surface of the magnetic shield 3. The coil 4 consists of the short side part a along partially the short side of the external surface of the magnetic shield 3, long side part b along the entire long side, and circumference part c along the circumference of the neck opening 5 of the magnetic shield 3. Further, the parts a and b are connected with each other as they were, the parts a and c are connected via the link parts d and d', and the part c is along only the lower part of the opening 5, avoiding the button opening 8 of the magnetic shield 3. Further, the part d' is arranged with crossing to change the direction of the current at the part a. Thus, the demagnetizing effect with good efficiency can be obtained.
JP5315578A 1978-05-02 1978-05-02 Color receiving tube unit Pending JPS54144820A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5315578A JPS54144820A (en) 1978-05-02 1978-05-02 Color receiving tube unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5315578A JPS54144820A (en) 1978-05-02 1978-05-02 Color receiving tube unit

Publications (1)

Publication Number Publication Date
JPS54144820A true JPS54144820A (en) 1979-11-12

Family

ID=12934945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5315578A Pending JPS54144820A (en) 1978-05-02 1978-05-02 Color receiving tube unit

Country Status (1)

Country Link
JP (1) JPS54144820A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100786836B1 (en) * 2002-01-07 2007-12-20 삼성에스디아이 주식회사 Cathode ray tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100786836B1 (en) * 2002-01-07 2007-12-20 삼성에스디아이 주식회사 Cathode ray tube

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