US6583550B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorescent tube with light emitting diodes
Assignee: Toyoda Gosei Co Ltd
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Filing: 2001-10-23
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Granted: 2003-06-24
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Expires: 2021-10-23
Abstract
Abstract A fluorescent tube is constituted by a fluorescent tubular body having a transparent glass tube coated with a fluorescent layer containing a fluorescent material on its inner surface, and an ultraviolet LED substrate inserted in the fluorescent tubular body and having an equal length to the fluorescent tubular body. The ultraviolet LED substrate has twenty-four ultraviolet light emitting devices each having a long life, and the left end of the ultraviolet LED substrate is connected with lead wires through which electric power is supplied. Accordingly, when ultraviolet rays are emitted from the twenty-four ultraviolet light emitting devices, the fluorescent layer emits light in its own fluorescent color, the fluorescent tubular body as a whole emits light and the surroundings are illuminated with the light. Hence, the fluorescent tube can be used for illumination. Alternatively, the fluorescent tubular body may be formed by a transparent silicone rubber which can be bent into any desired shape.
Inventors
- 👤 Tadanobu Iwasa
- 👤 Shinji Takano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:25
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/20; F; F21; F21K; F21K9/00; F21K9/60; F21K9/64; F21S; F21S4/00; F21S4/20; F21V; F21V9/00; F21V9/02; F21V9/30; F21V9/32; F21V9/38; H; H01; H01J; H01J61/00; H01J61/02; H01J61/30; H01J61/32; H01J61/56; H01J61/70; H01J61/72; B; B29; B29C; B29C35/00; B29C35/02; B29C35/08; B29C35/0805; B29C2035/0827; F21Y; F21Y2103/00; F21Y2103/10; F21Y2115/00; F21Y2115/10
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
53 words
A fluorescent tube comprising: a fluorescent tubular body containing a fluorescent material emitting light in response to irradiation with ultraviolet rays; and a light emitting diode substrate inserted in said fluorescent tubular body, said light emitting diode substrate including a substrate and one or more ultraviolet light emitting devices disposed on said substrate.
Claim 2
Dependent Claim
53 words
A fluorescent tube comprising: a fluorescent tubular body containing a fluorescent material emitting light in response to irradiation with ultraviolet rays; and a light emitting diode substrate inserted in said fluorescent tubular body, said light emitting diode substrate including a substrate and one or more ultraviolet light emitting devices disposed on said substrate.
Claim 3
Dependent Claim
42 words
A fluorescent tube according to claim 1 , wherein said fluorescent tubular body comprises: a glass tube; and a fluorescent layer being applied on one of an inner surface and an outer surface of said glass tube, and containing said fluorescent material.
Claim 4
Dependent Claim
44 words
A fluorescent tube according to claim 1 , wherein said fluorescent tubular body comprises: a transparent resin tube; and a fluorescent layer being applied on one of an inner surface and an outer surface of said transparent resin tube, and containing said fluorescent material.
Claim 5
Dependent Claim
30 words
A fluorescent tube according to claim 1 , wherein said fluorescent tubular body comprises a transparent resin containing said fluorescent material, said transparent resin is extrusion-molded into a pipe shape.
Claim 6
Dependent Claim
64 words
A fluorescent tube according to claim 1 , wherein said fluorescent tubular body comprises: a first resin tube comprising a transparent or semi-transparent deformable synthetic resin; and a second resin tube comprising a transparent or semi-transparent deformable synthetic resin containing said fluorescent material, said second resin tube being disposed on one of an inner surface and an outer surface of said first resin tube.
Claim 7
Dependent Claim
34 words
A fluorescent tube according to claim 1 , wherein said fluorescent tubular body comprises a transparent or semi-transparent deformable synthetic resin containing said fluorescent material dispersed in a whole of said deformable synthetic resin.
Claim 8
Dependent Claim
50 words
A fluorescent tube according to claim 1 , wherein said fluorescent tubular body comprises: a resin tube comprising a transparent or semi-transparent deformable synthetic resin; and a fluorescent layer being applied on one of an inner surface and an outer surface of said resin tube, and containing said fluorescent material.
Claim 9
Dependent Claim
19 words
A fluorescent tube according to claim 5 , wherein said transparent or semi-transparent deformable synthetic resin is silicone rubber.
Claim 10
Dependent Claim
19 words
A fluorescent tube according to claim 6 , wherein said transparent or semi-transparent deformable synthetic resin is silicone rubber.
Claim 11
Dependent Claim
19 words
A fluorescent tube according to claim 7 , wherein said transparent or semi-transparent deformable synthetic resin is silicone rubber.
Claim 12
Dependent Claim
60 words
An fluorescent tube according to claim 1 , wherein said fluorescent material comprises a red fluorescent material emitting light in red in response to irradiation with ultraviolet rays, a green fluorescent material emitting light in green in response to irradiation with ultraviolet rays, an d a blue fluorescent material emitting light in blue in response to irradiation with ultraviolet rays.
Claim 13
Dependent Claim
53 words
A fluorescent tube according to claim 1 , wherein said fluorescent material comprises lanthanum sulfide activated with trivalent europium and trivalent samarium, which is substantially expressed by a general formula (La 1-x-y Eu x Sm y ) 2 O 2 S , wherein x and y designate numbers, respectively, satisfying 0.01≦x≦0.15 and 0.0001>y>0.03.
Claim 14
Dependent Claim
68 words
A fluorescent tube according to claim 1 , wherein said fluorescent material comprises aluminate activated with bivalent europium and bivalent manganese, which is substantially expressed by a general formula a (M1,Eu,Mn)O·bAl 2 O 3 , wherein M1 designates at least one element selected from the group of Mg, Ca, Sr, Ba, Zn, Li, Rb, and Cs, and a and b designate numbers, respectively, satisfying a>0, b>0, and 0.2≦a/b≦1.5.
Claim 15
Dependent Claim
53 words
A fluorescent tube according to claim 1 , wherein said fluorescent material comprises holophosphate activated with bivalent europium, which is substantially expressed by a general formula (M2,Eu) 10 (PO 4 ) 6 ·Cl 2 (in the formula, M2 designates at least one element selected from the group of Mg, Ca, Sr, and Ba).
Claim 16
Dependent Claim
65 words
A fluorescent tube according to claim 1 , wherein said fluorescent material comprises aluminate activated with bivalent europium, which is substantially expressed by a general formula a (M1,Eu)O·bAl 2 O 3 , wherein M1 designates at least one element selected from the group of Mg, Ca, Sr, Ba, Zn, Li, Rb, and Cs, and a and b designate numbers, respectively, satisfying a>0, b>0, and 0.2≦a/b≦1.5.
Claim 17
Dependent Claim
30 words
A fluorescent tube according to claim 1 , wherein each of said ultraviolet light emitting devices has an emission wavelength in a range of from 360 nm to 400 nm.
Claim 18
Dependent Claim
37 words
A fluorescent tube according to claim 1 , wherein each of said ultraviolet light emitting devices is formed a nitride semiconductor formed of at least one of selected from the group of AlGaInN, AlGaN, GaN, and InGaN.
Claim 19
Dependent Claim
28 words
A fluorescent tube according to claim 1 , wherein in said light emitting diode substrate, said plurality of ultraviolet light emitting devices are arranged linearly on said substrate.
Claim 20
Dependent Claim
48 words
A fluorescent tube according to claim 1 , wherein said light emitting diode substrate comprises a plurality of light emitting diode unit substrates which are connected to each other, each of said ultraviolet light emitting diode unit substrates having one or more ultraviolet light emitting devices disposed linearly.
Claim 21
Dependent Claim
28 words
A fluorescent tube according to claim 1 , wherein said ultraviolet light emitting device is disposed on said light emitting diode substrate while being sealed by transparent resin.
Claim 22
Dependent Claim
53 words
A fluorescent tube according to claim 5 , wherein said light emitting diode substrate comprises a plurality of light emitting diode unit substrates which are connected to each other through a lead wire flexibly, each of said ultraviolet light emitting diode unit substrates having one or more ultraviolet light emitting devices disposed linearly.
Claim 23
Dependent Claim
53 words
A fluorescent tube according to claim 6 , wherein said light emitting diode substrate comprises a plurality of light emitting diode unit substrates which are connected to each other through a lead wire flexibly, each of said ultraviolet light emitting diode unit substrates having one or more ultraviolet light emitting devices disposed linearly.
Claim 24
Dependent Claim
53 words
A fluorescent tube according to claim 7 , wherein said light emitting diode substrate comprises a plurality of light emitting diode unit substrates which are connected to each other through a lead wire flexibly, each of said ultraviolet light emitting diode unit substrates having one or more ultraviolet light emitting devices disposed linearly.
Claim 25
Dependent Claim
68 words
A fluorescent tube according to claim 1 , further comprising a cover fitted in an end of said fluorescent tubular body, said cover having support means protruding from said cover toward into an inside of said fluorescent tubular body and being coupled with said light emitting diode substrate to thereby support said light emitting diode substrate in a vicinity of an inside center of said fluorescent tubular body.
References Cited (Backward Citations)
US6283612B1
Cited
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