JPS54154998A - Illumination device for traffic signal - Google Patents
Illumination device for traffic signalInfo
- Publication number
- JPS54154998A JPS54154998A JP6399378A JP6399378A JPS54154998A JP S54154998 A JPS54154998 A JP S54154998A JP 6399378 A JP6399378 A JP 6399378A JP 6399378 A JP6399378 A JP 6399378A JP S54154998 A JPS54154998 A JP S54154998A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- colored
- beams
- glowing time
- colored beams
- 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
Landscapes
- Traffic Control Systems (AREA)
Abstract
PURPOSE: To prevent the colorless and transparent lens from shining as if it irradiated the colored beams via the sunlight and the like at the non-glowing time by distributing the color light source to radiate the colored beams at the back of the lens body.
CONSTITUTION: Lens substance 3 attached in front of device main body 1 is colorless and transparent. And color light source 4 distributed at the back body 3 is formed by coating phosphor 9 which emits the colored beams at the glowing time via exciatation of the ultraviolet rays and turns opque at the non-glowing time respectively. Thus, even if the external beams such as the sunlight ot the like enters main body 1 through lens 3, it is reflected by reflector 14 and thus not colored. Furthermore, the greater part of the sumlight coming in through phosphor 9 is cut off, and thus the reflected light is weak. Accordingly, the fact that the colored beams are radiated by the external light at the non-glowing time or lens 3 shines bright can be prevented.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6399378A JPS54154998A (en) | 1978-05-29 | 1978-05-29 | Illumination device for traffic signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6399378A JPS54154998A (en) | 1978-05-29 | 1978-05-29 | Illumination device for traffic signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54154998A true JPS54154998A (en) | 1979-12-06 |
Family
ID=13245301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6399378A Pending JPS54154998A (en) | 1978-05-29 | 1978-05-29 | Illumination device for traffic signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54154998A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6124679A (en) * | 1992-05-20 | 2000-09-26 | Cadence Design Systems, Inc. | Discharge lamps and methods for making discharge lamps |
-
1978
- 1978-05-29 JP JP6399378A patent/JPS54154998A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6124679A (en) * | 1992-05-20 | 2000-09-26 | Cadence Design Systems, Inc. | Discharge lamps and methods for making discharge lamps |
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