JPS5535454A - Projecting cathode ray tube - Google Patents
Projecting cathode ray tubeInfo
- Publication number
- JPS5535454A JPS5535454A JP10879678A JP10879678A JPS5535454A JP S5535454 A JPS5535454 A JP S5535454A JP 10879678 A JP10879678 A JP 10879678A JP 10879678 A JP10879678 A JP 10879678A JP S5535454 A JPS5535454 A JP S5535454A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- screen
- heat
- fluorescent
- fluorescent substance
- 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
Links
Abstract
PURPOSE: To prevent the temperature rise on a fluorescent scteen during operation and to avoid reduction in luminance due to damage on the fluorescent substance by jointly providing a heat-radiating tube on the substrate for the fluorescent substance.
CONSTITUTION: A high energy electron beam 9 emitted by an electron gun 10 scans over the fluorescent screen 7 to reproduce an image on the screen under the electromagnetic effect of a deflecting coil 11. The image light 12 is reflected on a concave mirror 8 consisting of a Schmidt mirror, penetrates a front glass 2 in the form of an enlarged projecting light 13 and focused on a screen. A heat radiating pipe system 11 consisting of a pipe, a wick and an operating liquid is connected to a substrate 5 for the fluorescent substance. If one end of the pipe is heated, the operating liquid sealed in the pipe evaporates absorbing the heat of vaporization and the vapour moves through the center of the pipe to the other end of the pipe where the vapour is liquefied radiating heat, thus preventing the temperature of the screen from rising.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10879678A JPS5535454A (en) | 1978-09-04 | 1978-09-04 | Projecting cathode ray tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10879678A JPS5535454A (en) | 1978-09-04 | 1978-09-04 | Projecting cathode ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5535454A true JPS5535454A (en) | 1980-03-12 |
Family
ID=14493695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10879678A Pending JPS5535454A (en) | 1978-09-04 | 1978-09-04 | Projecting cathode ray tube |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5535454A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5638961U (en) * | 1979-09-01 | 1981-04-11 | ||
JPS57118849A (en) * | 1981-01-14 | 1982-07-23 | Kubota Ltd | Abrasion resistant centrifugally cast casting of cast iron and its production |
JPS5946742A (en) * | 1982-09-08 | 1984-03-16 | Ricoh Co Ltd | Optical writing device |
US5159230A (en) * | 1991-03-07 | 1992-10-27 | Hughes Display Products Corp. Of Ky. | Projection cathode ray tube with fluid heat exchanger |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52147964A (en) * | 1976-06-02 | 1977-12-08 | Mitsubishi Electric Corp | Cathode-ray tube |
-
1978
- 1978-09-04 JP JP10879678A patent/JPS5535454A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52147964A (en) * | 1976-06-02 | 1977-12-08 | Mitsubishi Electric Corp | Cathode-ray tube |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5638961U (en) * | 1979-09-01 | 1981-04-11 | ||
JPS57118849A (en) * | 1981-01-14 | 1982-07-23 | Kubota Ltd | Abrasion resistant centrifugally cast casting of cast iron and its production |
JPS5946742A (en) * | 1982-09-08 | 1984-03-16 | Ricoh Co Ltd | Optical writing device |
US5159230A (en) * | 1991-03-07 | 1992-10-27 | Hughes Display Products Corp. Of Ky. | Projection cathode ray tube with fluid heat exchanger |
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