US4767193A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display unit with bent fluorescent lamp
Assignee: Mitsubishi Electric Corp
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Filing: 1985-12-24
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Granted: 1988-08-30
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Expires: 2005-12-24
Abstract
Abstract A new type of display unit is provided. A light emitting body such as a fluorescent lamp is disposed behind an elongated display panel. The middle section of the fluorescent lamp extends parallel to the elongated display panel to face it from end to end. The opposite ends of the lamp are bent if necessary.
Inventors
- 👤 Makoto Ota
- 👤 Hiroshi Sawamura
- 👤 Masao Karino
- 👤 Osamu Myodo
- 👤 Makoto Yamanoshita
- 👤 Toyohiro Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:27
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1335; G02F1/1336; G02F1/133602; G02F1/133604; G02F1/133611; G09; G09F; G09F9/00; G09F9/30; G09F9/35; H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/32
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
120 words
A display unit, comprising: an elongated display panel; a fluorescent lamp disposed behind said elongated display panel, said fluorescent lamp including a middle section extending substantially parallel to said elongated display panel to face said elongated display panel from end to end, and end sections on both sides of said middle section, each end section having a base attached thereto; and a case housing said elongated display panel and said fluorescent lamp therewithin, wherein each end section of said fluorescent lamp is bent at a right angle with respect to said elongated display panel and extends away from said panel to form a pair of inner corners on a far side of the fluorescent lamp from the elongated display panel.
Claim 2
Dependent Claim
120 words
A display unit, comprising: an elongated display panel; a fluorescent lamp disposed behind said elongated display panel, said fluorescent lamp including a middle section extending substantially parallel to said elongated display panel to face said elongated display panel from end to end, and end sections on both sides of said middle section, each end section having a base attached thereto; and a case housing said elongated display panel and said fluorescent lamp therewithin, wherein each end section of said fluorescent lamp is bent at a right angle with respect to said elongated display panel and extends away from said panel to form a pair of inner corners on a far side of the fluorescent lamp from the elongated display panel.
Claim 3
Dependent Claim
30 words
A display unit according to claim 1, wherein each inner corner of said bent portions of said fluorescent lamp has a reflective metal film disposed on an outer surface thereof.
Claim 4
Dependent Claim
30 words
A display unit according to claim 1, wherein said middle section has a reflective metal film disposed on an outer surface intermediate said ends and facing said elongated display panel.
Claim 5
Dependent Claim
28 words
A display unit according to any one of claims 2 and 3, wherein said reflective metal film includes a transparent synthetic resin tape vapor-deposited with a reflective metal.
Claim 6
Dependent Claim
25 words
A display unit according to any one of claims 2 and 3, wherein said reflective metal film includes a reflective layer formed through vapor depositing.
References Cited (Backward Citations)
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US4578672A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |