US4366416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent lamp device
Assignee: Toshiba Corp
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Filing: 1981-03-20
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Granted: 1982-12-28
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Expires: 2001-03-20
Abstract
Abstract A fluorescent lamp device formed of an outer tube containing a fluorescent lamp therein, a connection tube connected to one end of the outer tube, a cap containing a glow starter and a condenser therein connected to the other end of the outer tube, and a base member connected to the connection tube. The base member contains a ballast member mainly formed of a thermistor and a thermal adjustment member having an integrally formed contacting member for making electrical connection with a base pin of the fluorescent lamp. The thermal adjustment member and the thermistor are in direct electrical and mechanical engagement such that the thermal adjustment member conducts heat from the thermistor to the thermal adjustment member.
Inventors
- 👤 Nobuo Yokoyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:37
CPC Classifications
H; H01; H01J; H01J61/00; H01J61/02; H01J61/56; Y; Y10; Y10S; Y10S315/00; Y10S315/05
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
100 words
A fluorescent lamp device comprising: a cylindrical outer tube; a fluorescent lamp having a base at each end thereof disposed in said outer tube, each base having a pair of pins protruding therefrom for making connection thereto; a cylindrical connection tube connected to one end of said outer tube; a cap containing a glow starter and a condenser, said cap fixed to the other end of said outer tube; a base member fixed to said connection tube; and a ballast member comprising a thermistor, a conductive plate, a thermal adjustment member and a coil spring disposed in said base member.
Claim 2
Dependent Claim
100 words
A fluorescent lamp device comprising: a cylindrical outer tube; a fluorescent lamp having a base at each end thereof disposed in said outer tube, each base having a pair of pins protruding therefrom for making connection thereto; a cylindrical connection tube connected to one end of said outer tube; a cap containing a glow starter and a condenser, said cap fixed to the other end of said outer tube; a base member fixed to said connection tube; and a ballast member comprising a thermistor, a conductive plate, a thermal adjustment member and a coil spring disposed in said base member.
Claim 3
Dependent Claim
23 words
A fluorescent lamp device as in claim 1, wherein said thermistor and said thermal adjustment member are in contacting electrical and mechanical engagement.
Claim 4
Dependent Claim
19 words
A fluorescent lamp device as in claims 1 or 2, wherein said thermistor comprises: a positive temperature characteristic thermistor.
Claim 5
Dependent Claim
34 words
A fluorescent lamp device as in claims 1 or 2, wherein said thermal adjustment member comprises: an integrally formed contacting member for making electrical connection with a selected base pin of the fluorescent lamp.
Claim 6
Dependent Claim
23 words
A fluorescent lamp device as in claim 4, wherein said contacting member is formed on a standing side of the thermal adjustment member.
Claim 7
Dependent Claim
31 words
A fluorescent lamp device as in claim 4 further comprising: a supporting bar penetrating said thermal adjustment member, said connection tube, and said base member for making a mechanical connection therebetween.
Claim 8
Dependent Claim
31 words
A fluorescent lamp device as in claim 5, further comprising: a supporting bar penetrating said thermal adjustment member, said connection tube, and said base member for making a mechanical connection therebetween.
Claim 9
Dependent Claim
29 words
A fluorescent lamp device as in claim 4, wherein said contacting member comprises: a socket mounted on a bent portion of a standing side of the thermal adjustment member.
Claim 10
Dependent Claim
28 words
A fluorescent lamp device as in claim 8 wherein said contacting member of said thermal adjustment member comprises: a projection for making an electrical connection with the socket.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |